Blackboxes data decoded PROVED Boeing 737MAX ALL IDENTICALLY FUCKED UP! Poor helpless pilots and Pax! Boeing's flying COFFIN! CB!

[Ang4MohTrump]

https://www.abc.net.au/news/2019-03...max-8-similarities-to-lion-air-crash/10910460



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Ethiopia's Boeing 737 MAX 8 black box data 'shows clear similarities' with Lion Air crash

Updated about an hour ago

Photo: One of the black box flight recorders from the crashed Ethiopian Airlines jet. (AP: BEA)
Related Story: Before the Boeing 737 MAX 8, another airline grounded its 'exciting' new fleet
Related Story: Boeing's pausing deliveries of the 737 MAX, and it's going to cost billions
Related Story: Lion Air pilots fought against automated nose dive on doomed flight: report

Analysis of the data from the black boxes of an Ethiopian Airlines plane that crashed, killing all 157 people on board, showed "clear similarities" with an earlier crash of the same jet model, a spokesperson for the Ethiopian Transport Ministry has confirmed.
Key points:

• French air authorities have been analysing data from the Ethiopian black box
• Crashes of the Boeing 737 MAX 8 have killed 346 people in less than six months
• Friends and family of the Ethiopian crash victims have begun funeral services

However, US officials have told Reuters they had not yet validated the data, emphasising "the investigation remains in the very early stages".
In October, a Lion Air crash killed all 189 people onboard, after pilots fought against the jet's automated nose dive.
Both planes were Boeing's top-selling jet model, the 737 MAX 8, and pilots in both crashes reported flight control problems during take-off.
In 2018, US pilots had also reported seperate issues anonymously to NASA regarding automated flight control problems, but no direct action was taken in response.
Photo: Ethiopian air crash authorities have been leading the crash investigation with assistance from France's authority, the BEA. (Flickr: Alan Wilson)



Concern over the plane's safety caused aviation authorities worldwide to ground the model, wiping billions of dollars off Boeing's market value.
At present, Boeing is continuing to make 737 MAX models, despite it placing a global ban on all flights of the aircraft.
About 5,000 737 MAX aircraft are on orders from carriers around the world, although some carriers such as Lion Air have suspended their orders until the model's safety can be guaranteed.

"It was the same case with the Indonesian [Lion Air] one. There were clear similarities between the two crashes so far," spokesperson Muse Yiheyis said.​

"The data was successfully recovered. Both the American team and our [Ethiopian] team validated it. The Minister thanked the French Government.
"We will let you know more after three or four days."
Boeing and American authorities now investigating
Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume.
Video: The acting US Federal Aviation Administration director explains 'new data' that led to the MAX series' suspension. (ABC News)

Under international rules, a preliminary report on the crash must be released within 30 days.
The Seattle Times reported that the US Federal Aviation Administration (FAA) "pushed the agency's safety engineers to delegate safety assessments to Boeing itself".
The report said this decision led engineers to "understate" the power of the 737 MAX 8's automated anti-stall system, known as MCAS (Manoeuvring Characteristics Augmentation System), which pushes the plane down if it detects a sharp vertical climb that could risk stalling the plane.
After the Ethiopian Airlines crash, aviation experts and pilots pointed to the MAX 8's MCAS as one potential reason for the accidents.
The US Federal Aviation Administration (FAA) has said satellite-based tracking data shows that the movements of the Ethiopian Airlines flight were similar to those of October's Lion Air crash.
The planes in both crashes flew with erratic altitude changes that indicated the pilots struggled to override fatal nose dives triggered by automated controls.
After the Ethiopian Airlines crash, aviation experts and pilots have pointed to the MAX 8's low-altitude warning system — where the plane automatically tips the plane down to prevent it from stalling — as one potential reason for the accidents.
What we know about the 737 MAX

Boeing's newest version of its most popular plane, the 737 MAX, is again in the spotlight after another deadly crash minutes after take-off.

A FAA spokesperson did not respond to the newspaper's queries 11 days before the fatal Ethiopian Airlines accident, who cited a "busy week".
The FAA declined to comment on the report but referred to previous statements about the certification process.
It has said the 737 MAX certification process followed the FAA's standard certification process.
While Boeing has repeatedly expressed confidence in the aircraft's safety, it is now working on a software update with the FAA amid suspicions that faulty sensors and software contributed to the two crashes that killed 346 people in less than six months.
Thousands mourn dead in Addis Ababa
Photo: Christian funeral services have commenced for the Ethiopian Airlines crash victims. (AP: Mulugeta Ayene)

Meanwhile, thousands mourned the Ethiopian plane crash victims on Sunday (local time), accompanying 17 empty caskets draped in the national flag through the streets of the capital as some victims' relatives fainted and fell to the ground.
The service came one day after officials began delivering bags of earth to family members of the 157 victims of the crash instead of the remains of their loved ones, because the identification process is expected to take such a long time.
Family members confirmed they were given a 1 kilogram sack of scorched earth taken from the crash site.
Many relatives already have gathered at the rural, dusty crash site outside Ethiopia's capital, Addis Ababa.
Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume.
Video: Families offered charred earth from crash for burials (Photo: AP) (ABC News)

The victims of Ethiopian Airlines Flight 302 came from 35 countries and included luminaries in literature, botany and numerous humanitarian workers.
Elias Bilew said he had worked with one of the victims, Sintayehu Shafi, for the past eight years.

"He was such a good person; he doesn't deserve this. He was the pillar for his whole family," Mr Bilew said.​

ABC/wires

Topics: air-transport, disasters-and-accidents, software, engineering, defence-and-aerospace-industries, air-and-space, ethiopia

First posted about 3 hours ago
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https://www.straitstimes.com/world/...at-is-the-mcas-system-on-the-boeing-737-max-8

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Ethiopian Airlines crash: What is the MCAS system on the Boeing 737 Max 8?

A new, unpainted 737 MAX 9 at Boeing's plant in Renton, Washington, on March 17, 2019.PHOTO: NYTIMES
Published
4 hours ago
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WASHINGTON (AFP) - Similarities between the Lion Air and Ethiopian Airlines crashes, confirmed by black box data, have focused attention on an anti-stalling system used in the new Boeing 737 Max 8 aircraft.
The Maneuvering Characteristics Augmentation System (MCAS) is an automated safety feature on the 737 Max 8 designed to prevent the plane from entering into a stall, or losing lift.
Both the Lion Air jet, which crashed in October, killing 189 people, and the Ethiopian Airlines aircraft, which went down a week ago Sunday, leaving 157 people dead, were fitted with the system.
Both planes experienced similarly erratic steep climbs and descents and fluctuating airspeeds before crashing shortly after takeoff.
A malfunction of the system was implicated in the Lion Air accident in Indonesia.
The US Federal Aviation Administration (FAA) said findings from the crash site and "newly refined satellite data" warranted "further investigation of the possibility of a shared cause for the two incidents."


The 737 Max 8 and 9 have been grounded worldwide since the Ethiopia crash, and on Friday industry sources said Boeing plans to upgrade the MCAS system in the "coming weeks."

Related Story
Black box shows similarities between Lion Air, Ethiopian Airlines crashes: Ethiopian transport minister
Related Story
Boeing's safety analysis of 737 Max flight control had crucial flaws
MCAS was introduced by Boeing on the 737 Max 8 because its heavier, more fuel-efficient engines changed the aerodynamic qualities of the workhorse aircraft and can cause the plane's nose to pitch up in certain conditions during manual flight.
Angle of attack sensors on the aircraft tell the MCAS to automatically point the nose of the plane down if it is in danger of going into a stall.
This is done through horizontal stabilizers on the plane's tail which are activated by the aircraft's flight control computer.
According to Boeing, MCAS does not control the plane during normal flight but "improves the behavior of the airplane" during "non-normal" situations.
These could be steep turns or after takeoff when a plane is climbing with flaps up at speeds that are close to stall speed.
According to the flight data recorder, the pilots of Lion Air Flight 610 struggled to control the aircraft as the automated MCAS system repeatedly pushed the plane's nose down following takeoff.
The pilots of the Ethiopian Airlines plane reported similar difficulty before the aircraft plunged into the ground shortly after takeoff.
Boeing was criticised
A preliminary report on the Lion Air Flight 610 accident blamed it in part on a faulty angle of attack sensor that triggered the MCAS system and automatically forced the plane's nose down.
Pilots flying the same Lion Air plane the previous day had managed to override the automated flight control system.

Related Story
What we know about Boeing 737 Max crash in Ethiopia and what comes next
Related Story
Piece found in wreckage shows Ethiopian Airlines 737 Max jet was set to dive, source says
Boeing came in for some criticism after the Lion Air crash for allegedly failing to adequately inform 737 pilots about the functioning of MCAS or provide training about the system.
Following the Lion Air crash, Boeing issued a bulletin to airlines operating the 737 Max 8 advising pilots how to override the MCAS system.
The US aircraft manufacturer issued a statement on Monday saying it was too early to understand the cause of the Ethiopian Airlines accident.
Boeing also said it was working on software updates to the MCAS system which would be deployed across the 737 Max fleet.
It said procedures already exist to "safely handle the unlikely event of erroneous data coming from an angle of attack (AOA) sensor," the suspected cause of the Lion Air crash.
"The pilot will always be able to override the flight control law (MCAS) using electric trim or manual trim," the aircraft manufacturer said.
Boeing has described the Max series as its fastest-selling family of planes, with more than 5,000 orders placed to date from about 100 customers.
But not since the 1970s - when the McDonnell Douglas DC-10 suffered successive fatal incidents - has a new model been involved in two deadly accidents in such a short period.

 

[Ang4MohTrump]

https://www.dw.com/en/ethiopian-air...r-similarities-with-lion-air-crash/a-47955798



Ethiopian Airlines 737 MAX crash had 'clear similarities' with Lion Air crash

Black box data from last weekend's Ethiopian Airlines plane crash has indicated "clear similarities" with October's Lion Air jet crash. The MAX 8 crashed shortly after takeoff, killing everybody on board.







Ethiopia's transport minister said on Sunday that flight recorder data indicated "clear similarities" exist between last week's Ethiopian Airlines plane crash and the downing of a Lion Air plane in October. Dagmawit Moges told reporters the parallels will be the "subject of further study during the investigation."

Both crashes involved the same model of plane — Boeing's 737 MAX 8 — and both pilots reported flight control issues, causing aviation authorities to ground the model around the world.

France's Bureau of Enquiry and Analysis for Civil Aviation Safety (BEA) is working with US and Ethiopian investigators to determine what brought down the plane.

Thousands of Ethiopians gathered at the capital's Holy Trinity Cathedral on Sunday for a funeral mass to honor the victims.

Read more: Ethiopians hold mass funeral for plane crash victims

• 
  
  
  
  Europe's major plane crashes of the 21st century
  European aviation disasters of the 21st century: Germanwings Airbus A320
  
  A Germanwings Airbus A320 crashed into the French Alps on March 24, 2015 during a flight from Barcelona to Dusseldorf. All 144 passengers and six crew members were killed. A co-pilot with mental problems intentionally crashed the plane.

123456789

Flight ET 302 came down near the town of Bishoftu, or Debre Zeit, about 50 kilometers (31 miles) south of Addis Ababa, just minutes after taking off, killing all 157 people on board. People from 35 countries were on the flight.

The country's transport minister said detailed information based on flight data, along with a preliminary report into the crash, will be released within the month.

Read more: European agency bans Boeing 737 MAX 8 from airspace

kw/aw (AP, Reuters)

Each evening at 1830 UTC, DW's editors send out a selection of the day's hard news and quality feature journalism. You can sign up to receive it directly here.



Listen to audio 03:22

Inside Europe: The aftermath of Boeing's 737 crash



DW recommends


Ethiopians hold mass funeral for plane crash victims
A memorial service has been held in Addis Ababa for the 157 people killed in last week's Ethiopian Airlines crash. Investigators hope the plane's black box recorders will reveal what caused the disaster. (17.03.2019)
European agency bans Boeing 737 MAX 8 from airspace
The European Aviation Safety Agency has banned Boeing 737 MAX 8 flights in its airspace following last Sunday's Ethiopian Airlines tragedy. It came after Germany, France, and Britain announced national prohibitions. (12.03.2019)
Ethiopian Airlines plane crashes shortly after takeoff
An Ethiopian Airlines plane en route to Nairobi crashed shortly after takeoff, with the airline confirming that there were no survivors. The pilot had reported difficulties and asked for permission to turn back. (10.03.2019)
Ethiopian Airlines black boxes flown to Paris for investigation
The black boxes recovered from Ethiopian Airline's crashed 737 MAX have arrived in France for analysis. Meanwhile, relatives of those killed have stormed out of a meeting with the airline. (14.03.2019)
Indonesia's crashed Lion Air plane was not fit for flying
A preliminary report on the crash found that the plane should have been grounded because of recurrent technical problems. Investigators are still working to pinpoint the exact cause of the disaster. (28.11.2018)
Europe's major plane crashes of the 21st century
DW takes a look at a few of the most deadly and significant plane crashes in Europe in the 21st century. (15.10.2018)
WWW links




https://www.newshub.co.nz/home/trav...ows-clear-similarities-to-lion-air-crash.html



Authorities say Ethiopian 737 MAX 8 black box data shows 'clear similarities' to Lion Air Crash

• 1 hour ago
• 
  Dan Lake
  
  
  
  Reuters
  
• Reddit
  
  

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Both crashes involved brand new Boeing 737 MAX 8 aircraft. Credits: Video - Newshub Image - Getty

Data recovered from the blackbox of the Ethiopian Airlines Boeing 737 MAX 8 that crashed on March 10 has "clear similarities" with October's Lion Air crash, according to officials in Ethiopia.
The flight was only in the air for a few minutes before it crashed, killing all 157 people onboard.
The crash has been linked to a Lion Air crash in October that involved the same aircraft type and claimed the lives of 189 people.
"There were clear similarities between the two crashes so far," Ethiopian transport ministry spokesman Muse Yiheyis told Reuters.

• Which airlines fly the Boeing 737 MAX 8 involved in fatal Lion Air and Ethiopian crashes
• Boeing's 'arrogance' caused 737 MAX 8 crashes, claims aviation expert
• Lion Air flight 610 fell 1479m in 21 seconds

"The data was successfully recovered. Both the American team and our team validated it. The minister thanked the French government. We will let you know more after three or four days."
United States officials have told Reuters that the Federal Aviation Administration has not yet validated the data.
When investigators, after reviewing black box data, return to Addis Ababa and start conducting interpretive work, the NTSB and FAA will assist in verification and validation of the data, an official said.
In Addis Ababa, a source who has listened to the air traffic control recording of the plane's communications said flight 302 had an unusually high speed after take-off before the captain asked to return to the airport.
The Seattle Times has reported that Boeing's safety analysis of a new flight control system on 737 MAX jets had several crucial flaws.
Last week, Boeing said it would deploy a software upgrade to the 737 MAX 8, a few hours after the FAA said it would mandate "design changes" in the aircraft by April.
Under international rules, a preliminary report on the crash must be released within 30 days.



https://www.washingtonpost.com/worl...c5d0999c21e_story.html?utm_term=.40f5cf716c05


Ethiopian official: Black box data shows ‘clear similarities’ between Ethiopian Airlines, Lion Air crashes

Ethiopian Airlines cabin crew members mourn as pallbearers carry the coffin of one of colleagues, who was on the Ethiopian Airlines flight that crashed last week. (Tiksa Negeri/Reuters)

By Paul Schemm
March 17 at 1:55 PM

ADDIS ABABA, Ethiopia — Ethiopia’s transport minister said Sunday that information from the flight data recorder on the Ethiopian Airlines jet that crashed last week shows “clear similarities” to the crash of the same type of plane in Indonesia in October.

Dagmawit Moges told journalists that the condition of the “black boxes” — the data and voice record — was good and that enough data had been recovered that her ministry’s Accident Investigation Bureau would release a preliminary report in 30 days on what happened to Flight 302.

“During the investigation of the FDR [flight data recorder], clear similarities were noted between Ethiopian Airlines Flight 302 and Indonesian Lion Air Flight 610, which will be the subject of further investigation,” Dagmawit said.

[Boeing had a best-selling 737 and a growing global market. Now after two crashes, its reputation is at risk.]

Initial data from the ill-fated Ethiopian Airlines flight as well as subsequent satellite information recovered showed an erratic flight path during the six minutes that the plane was in the air before it crashed into a field outside the capital, Addis Ababa, on March 10, killing all 157 aboard.

The plane ascended and descended and then ascended again, all the while flying at speeds well in excess of normal takeoff procedure. The pilot, Yared Getachew, was considered very experienced, with more than 8,000 hours of flying time.

There were enough similarities to the crash of the Lion Air jet in Indonesia in October, which also involved a Boeing 737 Max 8, that authorities around the world grounded the plane.

[Boeing’s CEO took home $30 million last year. After deadly crashes, he faces his biggest test.]

The voice and data recorders were taken by Ethiopian investigators on Thursday to France, where they are being analyzed by the Bureau of Inquiry and Analysis for Civil Aviation Safety.

Dagmawit said the U.S. National Transportation Safety Board also was involved in the analysis.

A preliminary report about the causes of the Lion Air crash pointed to erroneous data from a sensor causing the aircraft’s new automated stabilizer system to push the jet’s nose down. The pilots then struggled to pull the plane up, and it crashed into the Java Sea.

The minister’s comments Sunday suggested that a similar series of events may have caused the Ethiopian Airlines crash.

In November, Boeing issued a bulletin on how to reset the stabilizer if it started to push the plane’s nose down.

Read more

Process to identify remains from Ethiopian Airlines crash underway

FAA’s emergency order grounding Boeing jets

Investigators find 2nd piece of key evidence in crash of Boeing 737 Max 8 in Ethiopia

Today’s coverage from Post correspondents around the world

Like Washington Post World on Facebook and stay updated on foreign news

https://www.dw.com/en/newsletter-registration/a-15718229

 

[Ang4MohTrump]

https://www.wired.com/story/boeing-737-max-8-ethiopia-crash-black-box-data-lion-air/

• Author: Alex DaviesAlex Davies
• transportation
• 03.15.19
• 05:15 pm

How Investigators Pull Data off a Boeing 737’s Black Boxes

To understand what happened to Ethiopian Flight 302—and stop it happening again—investigators will pore over data they recover from the Boeing 737 MAX 8 jet's black boxes.
TONY KARUMBA/Getty Images
In the five days since Ethiopian Airlines Flight 302 crashed a few minutes after taking off from Addis Ababa, killing all 157 people aboard, regulators around the world have grounded the Boeing 737 MAX 8. That’s a reaction to the fact that the circumstances of this disaster match those of Lion Air Flight 610, another 737 MAX 8, which crashed into the Java Sea in October, killing all 189 occupants. But to find out what actually brought down the Ethiopian jet, investigators must get to the vital data stored on the plane’s two black boxes.
Those boxes are the flight data recorder and the cockpit voice recorder. Both use solid state hard drives, with memory cards on a circuit board. The first logs all the details that together provide a picture of everything the plane was doing as much as 25 hours before a crash: the positions of various switches, engine settings, airspeed, altitude, and more than 1,000 other parameters. Examine that data and “you know what happened to the airplane physically,” says aviation consultant Kit Darby.
The cockpit voice recorder is what it sounds like: an audio recording of everything the pilots are saying and hearing. That can often give you the why of a crash, since it provides the pilots’ interpretation of whatever’s going on and how they’re reacting. Paired with the flight data recorder, it can give you the whole picture. “You have to combine the two,” Darby says.
Which is why they’re built to survive practically any type of crash. Honeywell, which manufacturers black boxes, says they can survive an impact of up to 3,400 Gs. (Unless you’re a trained fighter pilot, you can probably handle about 5 Gs before passing out.) They can withstand the pressure exerted by 20,000 feet of water—for two years. They do just fine in temperatures up to 1,100 degrees Fahrenheit as well as ice, so neither a regular nor a wight dragon can destroy them.

The cockpit voice recorder and flight data recorder from Ethiopian Flight 302 arrived in Paris on Thursday, where investigators will examine the data that could reveal what brought down the Boeing 737 MAX 8 jet.
Christophe Ena/AP Images
For extra security, the boxes ride in the tail of the plane, which is less likely to be damaged in a crash than the rest of the aircraft. They’re equipped with sonar pingers to make them findable if the plane goes down over water and they sink to the ocean floor. (The pingers helped search teams locate the two recorders that sank to the floor of the Java Sea when the Lion Air 737 crashed.) And they’re bright orange, to make them easier to spot.
Ethiopian Flight 302 crashed on relatively flat and open terrain, so investigators found the black boxes within a day. Because special laboratory equipment is required to access their data, the boxes were sent to Paris, where France’s civil aviation investigator, the Bureau d'Enquêtes & d'Analyses, will handle them. They arrived Thursday morning and the technical work of accessing their data began Friday. In a photo released by the French agency, the flight data recorder looks pretty mangled. That’s not surprising for something that’s been in a plane crash—they’re built to survive, not come out looking pretty. And in most cases, the crushed mess not a big problem.
The BEA lab workers start by opening up each box and removing the one-inch layer of thermal protective insulation inside. Once they’ve got the memory board out, they put it under a microscope—some of the components are just millimeters across—looking for damage. Then they put them into an x-ray machine, to inspect what they can’t see with the microscope.
That's a relatively easy recovery operation, but sometimes black boxes are hard to find and difficult to salvage. Take the case of Air France 447, the Airbus A330 that crashed in the Atlantic Ocean off the coast of Brazil in 2009 with 228 people aboard. It took investigators two years to locate the wrecked plane and its black boxes, which lay under 13,000 feet of water. The fact that an international team spent that long on the hunt tells you just how strongly the sky lords feel about figuring out what causes crashes, and how to prevent it from happening again.
And the fact that the Air France plane’s black boxes made it through their underwater burial at all tells you just how tough-as-mothers they really are. In fact, the flight data recorder came out fine. The cockpit voice recorder was in slightly worse shape. The French team reported a cracked capacitor and resistor, plus damage to two “decoder-type” components. Before doing anything else, the team put the memory cards into an oven to remove any moisture (36 hours for the flight data recorder, 42 for the cockpit voice recorder). Then they removed the damaged bits and soldered in new ones. It’s technical work, but far from impossible.
Other types of damage aren’t so easy to fix, Darby says. “If it’s crushed, you’re not going to be able to read it.” And damage to the memory cards themselves is more worrisome than whatever may happen to the other parts of the circuit board. “That may or may not be recoverable.”
In the case of Air France 447, once the memory boards were fully dried out, the lab workers hooked the cards up to their reader. (They’re one of the few places in the world to have one; the National Transportation Safety Board’s lab in Washington, DC, is another.) They downloaded and synced up the data. Then they got to work figuring out what brought down the jet. A year later, in 2012, they released their final report. The plane stalled at cruising altitude after ice clogged the speed sensors, the autopilot shut off in response, and the pilots mismanaged the situation.
Now that the black box process is starting over in Paris, the results could reveal what brought down Ethiopian Flight 302 and led to the grounding of the world’s Boeing 737 MAX jets. Nothing will happen quickly. Full investigations usually take about 18 months—but preliminary data released before then can start to shed light on what happened.

 

[red amoeba]

Send the box to Europe,home of air bus sure say both crashes similar. Send to US will say not similar. If you send to China, will say the plane is critically fucked up should buy China planes.

So at the end the victims are fucked either way.

 

[Ang4MohTrump]

https://www.thesun.co.uk/news/8657895/ethiopian-airlines-crash-families-bury-scorched-earth/



DEATH JET Ethiopian Airlines crash had ‘clear similarities’ to Lion Air Boeing 737 Max disaster, black box data shows as families bury empty coffins in place of loved ones
Relatives have been urged to supply DNA samples to help with the identification, which they have been warned could take six months
By Gerard du Cann
17th March 2019, 7:00 pm
Updated: 17th March 2019, 7:37 pm










By Gerard du Cann
Invalid Date,
THE Ethiopian Airlines crash bares "clear similarities" to the earlier Lion Air Boeing 737 Max disaster, black box data suggests, as families bury empty coffins in place of loved ones.
In heart-breaking scenes a mass funeral was conducted in the capital Addis Ababa, where 17 empty coffins were buried while thousands of mourners watched on.
AFP or licensors
8
Mourners of victims of the crashed accident of Ethiopian Airlines react beside a coffin during the mass funeral at Holy Trinity Cathedral in Addis Ababa
The Boeing 737 MAX 8 - bound for Nairobi in Kenya - crashed shortly after taking off, killing all 157 people on board on March 10.
Relatives told news wires prior to the mass funeral that they were given small sacks of scorched earth from the site of the crash in place of remains.
Flight data from the Ethiopian Airlines disaster suggests "clear similarities" with a crash off Indonesia last October, which killed all 189 people that were on board and also involving a Max 8 plane, Ethiopia's transport minister has said.
Minister Dagmawit Moges cited preliminary data retrieved from the flight data recorder, or black box.
He said his government plans to release detailed findings of the doomed Flight ET302 within a month, according to Sky News.

We will not rest until we are given the real body or body parts of our loved ones.
Crash victim relative​

Both jets flew with erratic altitude, indicating the pilots struggled to bring the aircraft under control, and in both instances problems occurred almost immediately after take-off.
Preliminary findings suggest the stabiliser of the Ethiopian plane may have been in a position to point the nose of the craft down.
None of the bodies have been identified as of yet, due largely to the force of the impact of the jet.
One family member told the Associated Press: "We will not rest until we are given the real body or body parts of our loved ones."





Relatives have been urged to supply DNA samples to help with the identification, which they have been warned could take six months.
Airlines around the world have now grounded the Max 8 following the second crash on March 10.
Boeing said in a statement that it continues to have "full confidence" in the plane's safety, but that it was recommending temporarily suspending operations of the entire global fleet of the 737 Max aircraft, totaling 371 planes.
Reports suggest that a software issue with the Max 8 may have contributed to the Lion Air crash by causing it to dive, with the aircraft manufacturer planning to release advice to airlines on how to spot incorrect readings.
AFP or licensors
8
17 empty coffins were buried in total at Holy Trinity Cathedral in Addis Ababa
Getty Images - Getty
8
Mourners and family members escort the coffins of the Ethiopian passengers and crew who perished in the Ethiopian Airways ET302
Getty Images - Getty
8
Many mourners carried images of their lost friends and family
Getty Images - Getty
8
All 157 passengers and crew perished after the Ethiopian Airlines Boeing 737 Max 8 Flight came down six minutes after taking off from Bole Airport
EPA
8
A heap of debris from the wreckage of an Ethiopia Airlines Boeing 737 Max 8 aircraft
EPA
8
Rescue workers search the site for pieces of the wreckage of an Ethiopia Airlines Boeing 737 Max 8 aircraft near Bishoftu
AP:Associated Press
8
Ethiopian relatives of crash victims mourn and grieve at the scene where the Ethiopian Airlines Boeing 737 Max 8 crashed
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https://www.bloomberg.com/news/arti...milarities-between-lion-and-ethiopian-crashes


business
Black Box Shows Similarities Between Lion Air and Ethiopian Airlines Crashes
By
Nizar Manek
and
Rita Devlin

March 18, 2019, 1:09 AM GMT+8 Updated on March 18, 2019, 6:02 AM GMT+8

• Ethiopian minister sees ‘clear similarities’ in Boeing events
• 737 Max FAA approval process had flaws, Seattle Times reports

A flower memorial bearing potraits of victims at the crash site on March 16.

Photographer: Tony Karumba/AFP via Getty Images

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The Ethiopian Air Boeing 737 Max crash had similarities to the Lion Air plane that went down off the coast of Indonesia about five months ago, the nation’s transport minister said, as scrutiny of one of the aircraft’s flight control systems continued to build.


A preliminary study of the flight data recorders show “clear similarities between Ethiopian Airlines flight 302 and Indonesian Lion Air Flight 610,” Dagmawit Moges said Sunday at a press conference in Addis Ababa. The findings will be subject to further investigation, and a preliminary report will be released within 30 days, she said.

The flight data recorder from the Ethiopia Airlines Boeing 737 Max 8 aircraft.
Source: BEA via EPA-EFE
The Ethiopian Airlines plane crashed March 10 minutes after it took off from Ethiopia’s capital, killing all 157 people on board. The accident prompted most of the world to ground Boeing Co.’s 737 Max 8 aircraft on safety concerns. Much of the attention focused on a specific flight-control system known as MCAS that may have thwarted pilots’ efforts to keep the plane from falling into a catastrophic nose dive.



In one of the most detailed descriptions yet of the relationship between Boeing and the Federal Aviation Administration during the 737 Max’s certification process, the Seattle Times reported Sunday that the U.S. regulator delegated much of the safety assessment to Boeing and that the analysis the planemaker in turn delivered to the authorities had crucial flaws.



The newspaper’s report was based on interviews with current and former engineers directly involved or familiar with the evaluations, all of whom asked not to be identified, and was under way even before the Ethiopia crash.
Boeing told the newspaper Saturday the FAA had reviewed the company’s data on the plane and “concluded that it met all certification and regulatory requirements,” and repeated that comment on Sunday in a statement to Bloomberg News. The planemaker, which is based in Chicago but designs and builds commercial jets in the Seattle area, had also told the newspaper there were “some significant mischaracterizations” in the engineers’ comments, the Seattle Times reported.

Dennis Muilenburg
Photographer: David Ryder/Bloomberg
In a separate statement Sunday, Boeing Chief Executive Officer Dennis Muilenburg made his fullest public comments to date, reiterating the company’s sympathies for the affected families and support for the investigation.

“While investigators continue to work to establish definitive conclusions, Boeing is finalizing its development of a previously announced software update and pilot training revision that will address the MCAS flight control law’s behavior in response to erroneous sensor inputs,” Muilenburg said in the statement.

The airline’s shares declined about 10 percent last week, closing at $378.99 on March 15.
Safety Analysis

Boeing’s System Safety Analysis of the flight control software -- suspected to have contributed to the Lion Air jetliner crash in October and also under the spotlight in the Ethiopia accident -- understated the power of the system, the engineers told the Seattle Times. The newspaper said the analysis also failed to account for how the system could reset itself each time a pilot responded -- in essence, gradually ratcheting the horizontal stabilizer into a dive position. FAA technical experts told the newspaper that as the agency’s certification of the 737 Max proceeded, managers prodded them to speed up the process as development of the model was nine months behind that of rival Airbus’s A320neo.

Airbus A320neo
Photographer: Balint Porneczi/Bloomberg
The Seattle Times said the safety analysis ranked a potential failure of the Maneuvering Characteristics Augmentation System, or MCAS, as “hazardous,” one step below “catastrophic.” But even that designation should have been enough to prod reliance on more than just one input sensor, the engineers told the newspaper.
“The FAA’s aircraft certification processes are well established and have consistently produced safe aircraft designs,” the agency said in a statement Sunday. “The 737 Max certification program followed the FAA’s standard certification process.”
As far as MCAS goes, the FAA said, the periodic training required of all U.S. commercial pilots includes how to handle events where there are unexpected movements of the horizontal stabilizer. “A nose-down scenario resulting from an issue with the MCAS system would have the same characteristics as a runaway stabilizer trim scenario,” the safety regulator said. “A proper response to a runaway stabilizer trim scenario would resolve a situation resulting from either a stabilizer trim issue or an MCAS issue.”
— With assistance by Alan Levin
(Updates with Boeing shares. An earlier version corrected an aircraft name to A320neo.)

 

[Ang4MohTrump]

Send the box to Europe,home of air bus sure say both crashes similar. Send to US will say not similar. If you send to China, will say the plane is critically fucked up should buy China planes.

So at the end the victims are fucked either way.

Ang Moh are no longer trusted, even Niggers smarten up today!

For these 737 Max cases, all are crashed very near to airport where they took off. So even without the black boxes, there are clear radars and control tower voice recorders, already told the basic facts, what were their speed, altitude, locations, and what were the conversation between pilots and towers.

Lion Air pilots sent MAYDAY MSGs, Niggers had no time to Kao Peh Kao Bu.

In near future the Chinese will have LIVE 5G data connections to civilian jets, so live data can be recorded without need to find black-boxes to know what happened when flights are lost. Even 4K VIDEO STEAMS can be LIVE. What we are now using are IRONICALLY OUTDATED SYSTEMS! VHF Radios of AM WW1 technologies are linking cockpit & towers, imagine that for TODAY's technologies!

Today strictly speaking, NO COMMERCIAL PILOTS ARE NECESSARY, and MUCH SAFER if AUTO-PILOTS & REMOTE PILOTS flies jets. Military are already doing that and found very reliable and can handle much more complicated missions and accomplishments. Pitot Tubes & altitude meters are less reliable than GPS & Gyro & Inertial Sensors, already many cases of ice frozen Pitot Tube fucked up badly, even when they had multiple redundancies.

BOEING & AIRBUS cannot get their software right. USELESS Chow Ang Mohs!

Chinese Sport & Toy Drones already OUT-DO Boeing & Airbus in reliability and performance. Military and War Front Militants are using Chinese Toy & Sports Drone to fight war GLOBALLY!

 

[Tony Tan]

http://www.sohu.com/a/301973124_419351?spm=smpc.home.top-news3.1.1552874804651daURYg2




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埃航坠毁客机黑匣子数据成功导出 驾驶舱录音曝光

2019-03-18 08:42 印尼 /美国 /法国

法国民航安全调查分析局16日宣布成功导出埃塞俄比亚航空公司失事客机其中一只“黑匣子”存储的数据，已经移交埃塞方面调查人员。

同一天，埃塞官员说将加快辨认遇难乘客的身份。

高速爬升

法国民航安全调查分析局声明，已经成功导出驾驶舱语音记录器内数据，17日将继续解析另一只“黑匣子”、即飞行数据记录器内数据。

这一机构在社交媒体“推特”上传图片，显示驾驶舱语音记录器外表有磕碰痕迹，但总体完好。

声明说，这一机构没有听取语音记录器的录音。

▲这是3月11日在埃塞俄比亚首都亚的斯亚贝巴附近拍摄的救援人员找到的失事飞机黑匣子。（新华社发）

一名听过录音的埃塞方面人士告诉路透社记者，失事客机飞行员起飞后不久向地面控制中心报告“控制问题”，希望获得许可、以快速爬升至海拔4200米以上、即机场上空大约2000米。　　

这名消息人士说，客机随后以“不同寻常的高速”飞行，爬升不久后飞行员紧急要求返航；客机最终从雷达屏幕中消失。

由于空难调查没有结束，这名消息人士要求不公开姓名，但说客机的控制问题是促使飞行员操纵飞机爬升的原因。　

埃塞航空一架波音737 MAX 8型客机10日原定从埃塞俄比亚首都亚的斯亚贝巴飞往肯尼亚首都内罗毕，起飞大约6分钟后失事，149名乘客和8名机组人员全部遇难。调查人员11日找到两只“黑匣子”，随后送往法国。

航空专家说，客机飞行高度低时，飞行员如果遭遇问题，通常选择爬升，以争取时间操纵客机，同时避免应对复杂地形。亚的斯亚贝巴周边环山，北面是海拔大约3200米的恩托托山。

全力善后

埃塞交通部长达格玛维特·莫格斯16日告诉媒体记者，正在等待调查结果，将“尽全力”查明客机失事原因；只是，这类调查通常需要耗费大量时间，用以作出具体结论。

她说，埃塞方面已经着手借助脱氧核糖核酸（DNA）遗传信息确认遇难者身份，预期将持续6个月，国际刑事警察组织等机构将提供帮助。

按照莫格斯的说法，埃塞方面已经发放临时死亡证明，正式死亡证明将在2周内发放给遇难者家属。

一场遇难者集体悼念活动预定17日在亚的斯亚贝巴举行。

莫格斯说，美国国家运输安全委员会派出16人协助调查，客机制造商波音公司人员同样参与。

美国联邦航空局代理局长丹尼尔·埃尔韦尔先前说，现有信息显示，埃塞失事客机与印度尼西亚狮子航空失事客机的飞行轨迹“差不多”，将依据“黑匣子”的分析结果判断两起空难是否有关联。

印尼狮子航空一架波音737 MAX 8型客机去年10月29日起飞十多分钟后坠毁，189名乘客和机组人员遇难。对比两起空难，飞行员都向控制中心报告遇到问题并试图返航。埃塞航空空难后，数十个国家和地区陆续停飞或禁飞波音MAX系列客机。

波音公司在去年狮航空难后说，将升级737 MAX系列客机的飞行控制软件；这家企业在埃塞航空空难后说，软件升级将在“今后几周”完成。

一名消息人士告诉媒体记者，波音公司打算一周至10天内发布升级后的软件。

来源 | 新华社

两岸战机对峙时同称"中国"？对岸空军果然……

成都七中实验学校事件，警方信息应是公众理性判断的落脚点

737 MAX 8坠毁，为啥民航局停飞的却是737-8？别慌，看完→返回搜狐，查看更多


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Esplanade crashed passenger aircraft black box data successfully exported Cockpit recording exposure

2019-03-18 08:42 Indonesia /United States /France


The French Civil Aviation Safety Investigation and Analysis Bureau announced on the 16th that it has successfully exported data from one of the “black box” stores of the Ethiopian Airlines crash aircraft, which has been handed over to Ethiopian investigators.


On the same day, Ethiopian officials said that they would speed up the identification of the victims.


High speed climb


The French Civil Aviation Safety Investigation and Analysis Bureau stated that it has successfully exported data from the cockpit voice recorder and will continue to analyze the data in the other "black box", the flight data recorder, on the 17th.


The agency uploaded a picture on the social media "Twitter", showing that the cockpit voice recorder has a bumpy appearance on the outside, but overall it is intact.


The statement said that the agency did not listen to the recordings of the voice recorder.




▲This is the black box of the wrecked aircraft that was rescued by rescuers near the Ethiopian capital of Addis Ababa on March 11. (Xinhua News Agency)


A person from the Ethiopian who had heard the recording told Reuters that the pilot of the crashed passenger plane reported the "control problem" to the ground control center shortly after takeoff. He hoped to obtain permission to climb to an altitude of 4,200 meters or more, or about 2000 meters above the airport. .


The source said that the passenger plane then flew at an "unusually high speed", and soon after the climb, the pilot urgently requested to return; the passenger plane eventually disappeared from the radar screen.


Since the air crash investigation did not end, the source asked not to disclose his name, but said that the control problem of the passenger plane was the reason for the pilot to control the aircraft to climb.


A Boeing 737 MAX 8 aircraft from Ethiopian Airlines was scheduled to fly from Addis Ababa, the capital of Ethiopia, to Nairobi, the capital of Kenya. It took about 6 minutes to take off after the takeoff, and 149 passengers and 8 crew members were killed. Investigators found two "black boxes" on the 11th and then sent them to France.


Aviation experts say that when the flight altitude of a passenger plane is low, if the pilot encounters a problem, he or she usually chooses to climb to gain time to operate the passenger aircraft while avoiding dealing with complex terrain. Surrounded by the mountains around Addis Ababa, the north is the Mount Etto at an altitude of about 3,200 meters.


Full of aftermath


Ethiopian Transport Minister Dagmarvit Moggs told reporters on the 16th that he is awaiting the results of the investigation and will "do his best" to find out the cause of the crash of the passenger plane; however, such investigations usually take a lot of time to make concrete conclusions. .


She said that Ethiopia has begun to use the genetic information of DNA to confirm the identity of the victims. It is expected to last for six months, and agencies such as the International Criminal Police Organization will provide assistance.


According to Moggs, Esser has issued a temporary death certificate, and the official death certificate will be issued to the families of the victims within 2 weeks.


A collective memorial service for the victims is scheduled to be held in Addis Ababa on the 17th.


Moggs said that the National Transportation Safety Board sent 16 people to assist in the investigation, and the passenger aircraft manufacturer Boeing also participated.


The FAA Acting Director Daniel Elwell previously said that the existing information shows that the flight path of the Ethiopian crash aircraft and the Indonesian Lion Air crash passenger aircraft is "similar", and will judge whether the two air crashes are based on the analysis results of the "black box". Related.




A Boeing 737 MAX 8 passenger aircraft from Indonesian Lion Air crashed more than ten minutes after taking off on October 29 last year, killing 189 passengers and crew. In contrast to the two air crashes, the pilot reported problems to the control center and tried to return. After the Ethiopian air crash, dozens of countries and regions have been grounded or banned from flying Boeing MAX series aircraft.


Boeing said after the lion aviation accident last year that it will upgrade the flight control software of the 737 MAX series aircraft; the company said after the Ethiopian air crash that the software upgrade will be completed in the next few weeks.


A source told reporters that Boeing plans to release the upgraded software within a week to 10 days.


Source | Xinhua News Agency


When the cross-strait fighters confront each other, they are called "China"? The opposite air force really...


In the event of Chengdu Qizhong Experimental School, police information should be the foothold of public rational judgment


The 737 MAX 8 crashed, but the 737-8 was grounded for the Civil Aviation Authority? Don't panic, read → return to Sohu, see more

 

[tun_dr_m]

TUA-KEE for DOTARD & BOEING, CRIMINAL LIABILITIES INVOLVING!

Boeing WITHHELD SYSTEM INFO from 737 MAX pilots and airlines! Not informing pilots and airlines about their hidden software that will affect flight safety and characteristics! Extremely WRONG! Criminal Negligence & UNSAFE UNPROFESSIONAL!

DOTARD SHUTDOWN GOVT for RECORD SETTING 35DAYS including NSTB (National Transport Safety Board) & FAA (Federal Aviation Admin) Causing LONG DELAYS TO INVESTIGATE AND ENFORCE SAFETY, it was during the Dotard Govt Shut Down Lapse the SUSPENSION of 737 MAX should had been done! Dotard has blood on his hands for these Deaths and Losses!

Lawyers will sue for sure! Dotard & Boeing!

 

[syed putra]

Send the box to Europe,home of air bus sure say both crashes similar. Send to US will say not similar. If you send to China, will say the plane is critically fucked up should buy China planes.

So at the end the victims are fucked either way.

The similarity was detected by canada using reputable satellite data and tracking

 

[syed putra]

Ang Moh are no longer trusted, even Niggers smarten up today!

For these 737 Max cases, all are crashed very near to airport where they took off. So even without the black boxes, there are clear radars and control tower voice recorders, already told the basic facts, what were their speed, altitude, locations, and what were the conversation between pilots and towers.

Lion Air pilots sent MAYDAY MSGs, Niggers had no time to Kao Peh Kao Bu.

In near future the Chinese will have LIVE 5G data connections to civilian jets, so live data can be recorded without need to find black-boxes to know what happened when flights are lost. Even 4K VIDEO STEAMS can be LIVE. What we are now using are IRONICALLY OUTDATED SYSTEMS! VHF Radios of AM WW1 technologies are linking cockpit & towers, imagine that for TODAY's technologies!

Today strictly speaking, NO COMMERCIAL PILOTS ARE NECESSARY, and MUCH SAFER if AUTO-PILOTS & REMOTE PILOTS flies jets. Military are already doing that and found very reliable and can handle much more complicated missions and accomplishments. Pitot Tubes & altitude meters are less reliable than GPS & Gyro & Inertial Sensors, already many cases of ice frozen Pitot Tube fucked up badly, even when they had multiple redundancies.

BOEING & AIRBUS cannot get their software right. USELESS Chow Ang Mohs!

Chinese Sport & Toy Drones already OUT-DO Boeing & Airbus in reliability and performance. Military and War Front Militants are using Chinese Toy & Sports Drone to fight war GLOBALLY!

They should outsource the software development to bangalore or little india.

 

[motormafia]

Many idiots in this world false-believe in Western Crooks poor technologies and moral and ethical standard.

They false-believe the myth of Western Product quality and safety and honesty and faked integrity. They will blindly say Chinese / Russian aircrafts were unsafe and Boeing Airbus were safe regardless of reality. When fooled and bluffed by Ang Moh they are happy. When reality expose the truth they will look away. And continue to blindly blame the products that are acutually better and safer and cheaper.

 

[tun_dr_m]

FAA Lapses: sure to be sued!

https://www.rt.com/news/454076-boeing-737-safety-analysis/





HomeWorld News

FAA allowed Boeing to carry out its own flawed safety analysis of the 737 MAX - report
Published time: 17 Mar, 2019 21:02
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An American Airlines Boeing 737 MAX 8 flight lands at Reagan National Airport in Washington © Reuters / Joshua Roberts

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A troublesome autopilot feature believed to be behind two crashes of Boeing’s 737 MAX 8 airplane met all FAA requirements, the manufacturer claims. However, Boeing’s own safety analysis was riddled with flaws, engineers say.
Ethiopian Airlines Flight 302 nosedived into a field shortly after takeoff last Sunday, killing all 157 people on board. Last October, a similar fate befell Indonesian Lion Air Flight 610, which plunged into the sea, killing all 189 passengers and crew. In both cases, the 737 Max 8’s MCAS monitoring system is believed to have pushed the plane’s nose down automatically, throwing the aircraft into a dive.
Read more
Profit v passenger safety: Why the US was the last to ground troubled Boeing jets
There are “clear similarities” between the two accidents, Ethiopia’s transport minister told reporters on Sunday.
With the 737 Max 8 grounded worldwide, the MCAS system is now under scrutiny. A Boeing spokesman said on Sunday that the system met all of the Federal Aviation Administration’s (FAA) certification requirements, but a group of anonymous Boeing and FAA engineers told the Seattle Times that the FAA delegated much of the safety analysis to the company itself, which cut corners to deliver the plane on time.
Due to the plane’s relatively forward engine placement, its nose was liable to drift upwards during flight, a characteristic that could lead to engine stalls. The MCAS system was designed to make micro-adjustments to the tail’s angle to push the nose back down and counteract this.
Boeing’s analysis, the engineers said, understated the power of this system. By the time the planes entered service, the MCAS system was able to move the tail more than four times further than the initial analysis stated. Furthermore, the analysis failed to account for how the system would reset itself every time a pilot responded, allowing it to repeatedly push the plane’s nose down.
The MCAS system relies on only one sensor to read the nose angle. Had Boeing accurately assessed the impact of that system’s failure, such a setup would never have been allowed, the engineers said.
Read more
Substitute for Boeing Max? Russian MC-21 passenger jet to debut at MAKS 2019 Air Show
The FAA allowed Boeing to conduct its own safety analysis, and trusted the firm’s conclusions. Other air safety regulators around the world then certified the MAX 8 based on the FAA’s thumbs up.
Boeing did not refute the engineers’ claims, but said that “there are some significant mischaracterizations” with them.
Development of the 737 MAX was rushed, the engineers said, as Boeing was competing to bring the plane to market before Airbus’ A320neo. In this environment, the company allegedly cut corners. The MCAS system was not mentioned in any training manuals, and was expected to only kick in in extreme circumstances. Boeing’s insistence on its safety allowed 737 pilots to switch to flying the MAX 8 with minimal extra training, an attractive prospect to cost-conscious airlines.
One pilot said his training involved little more than a one-hour session with an iPad, with no simulator hours.
Moving forward, Boeing has promised to update the 737 MAX’s software, limiting the strength of the MCAS system and allowing it to take readings from multiple sensors. However, the Seattle company’s troubles are far from over. As the planes stay grounded, Boeing’s stock is falling and airlines are beginning to demand compensation.
The FAA, meanwhile, has said that it may take “months” for Boeing to apply the necessary software updates.
Think your friends would be interested? Share this story!

 

[Ang4MohTrump]

Boeing Design Modification for 737 MAX has UNSTABLE CENTER OF GRAVITY, by refitting with LARGER HEAVIER ENGINE on 737 Airframe and Forcing it there by mounting towards front, with CG shifted forward from Original 737. Hence NOSE DIVE HARD TO RECOVER!

FLAWED Maneuvering Characteristics Augmentation System (MCAS) was NOT inform to Pilots & Airlines!

Boeing will be sued CRIMINALLY! Hundreds of MAN SLAUGHTER CHARGES in 2 COUNTRIES!



https://mil.news.sina.com.cn/jssd/2019-03-18/doc-ihsxncvh3375348.shtml

发动机接近机头致波音737重心不稳 C919设计更胜一筹

发动机接近机头致波音737重心不稳 C919设计更胜一筹



176

沉舟侧畔千帆过：波音737Max坠毁能否为中国C919提供新机遇1/19
查看原图图集模式
3月10日，埃塞俄比亚航空一架波音737Max8飞机在亚的斯亚贝巴起飞后6分钟坠毁，机上包括8名中国人在内的157名乘客全部丧生。而在不到5个月前的去年10月29日，印度尼西亚狮航610航班才在雅加达起飞后13分钟坠毁，机上189人也全部丧生。坠机事故发生后，全球哗然，包括中美欧在内的近50个国家和地区随即宣布全面停飞波音737Max系列飞机。目前中国正在研制波音737Max飞机的竞争机型C919，那么波音737Max的禁飞令是否会让波音一蹶不振，而中国的C919又能否借此打开新的一片天？本期《出鞘》就来谈波音737Max被禁飞。


最近，波音737MAX8客机失事的事件受到了全球关注。关于此次坠落事件，以及5个月前印度尼西亚狮航的737MAX8的坠落事件，很多推测都指向波音的MCAS系统。

波音737MAX8客机失事引发全球关注
大多数运输机和民航客机的发动机都是一个标准的圆形，因为既要符合引擎电风扇的尺寸结构，又要符合引擎进气流畅和飞机的气动布局的最佳化。但是波音737系列客机是特例。它的发动机进气口不是圆形，而是在发动机进气口接近地面的部位刻意进行了扁平设计。因为波音737原始的设计导致机翼距地面过低。为了防止发动机进气道过低吸进杂物，所以只能将发动进气道修形向上抬高。
更为严重的是，737MAX系列采用了直径更大的发动机，为防止引擎过度接近地面采用了发动机前置的方案，所以737MAX系列的发动机更接近机头。但是这样一来就有一个缺点，飞机的重心不稳定，波音737 MXA的操纵系统采用了静不安定设计，遇到气流和失速电脑会进行自动干预。这也是航空界很多人士认为印尼狮航和埃航失事的主要原因。

波音737MAX系列机翼位置过低是设计不足
737MAX最明显的标志是采用新性的鲨鱼鳍式翼梢小翼。但是新换装的LEAP-1B发动机直径大，而波音737的起落架却是个小短腿，为避免发动机距地面过近，必须将其安装位置前移并升高。但这也带来了一定的抬头力矩，让飞机在平飞过程中总是上翘。因此波音也不得不增加了MCAS操纵系统。去年狮航出事很可能久是因为这个系统，此次这次坠机也有可能与此有关。
MCAS可能敏感度过高，在感知认定迎角过高时，它有可能越过飞行员的控制强行操纵升降舵！据相关人士称，很有可能这次事故就是超越控制后的升降舵让飞机处于俯冲状态，因此这两次事故都是飞机呈俯冲姿态冲向地面。
当然，真正的原因应该等待调查结果。如果真是这种原因，波音737MAX的设计分明存在缺陷，该机的前景将十分堪忧。但是737 MAX系列是波音现在唯一能拿得出手的单通道客机。在势头正猛的空客320NEO系列的咄咄逼人的情况下，波音除了MAX就只能耗时数年重新研制这一级别的单通道客机，这就为中国的C919带来了重大利好。

国内民航总局已经停飞国内所有737max
中国C919飞机设计是后来者居上。它充分参考了各方面的经验，特别是波音737的机翼位置太低，不能随意安装引擎。因此，对C919来说，它的起点和总体设计要比波音737更高一筹。
国内民航总局这次的反应也很快，出于旅客安全考虑已经停飞了737max。目前国内所有波音737MAX型飞机全部停飞待检，以保证飞机和乘客安全。据透露，我们目前总共有96架波音737MAX型飞机，对于这些航空公司来说，停飞可能会给日常航班带来相当大的压力。

中国C919客机可取而代之

波音737MAX8型飞机虽然有这么多的问题，但不必太担心。随着我们的工业水平和科学技术水平的进步，我国研究的C919型干线飞机即将投入，更早投入运营的ARJ-21支线客机也已服役5年。美国的飞机不安全，我们可以选择国产飞机。（作者署名：小小点兵台）



https://mil.news.sina.com.cn/china/2019-03-18/doc-ihrfqzkc4748307.shtml

波音737max首次引入电传飞控 这一漏洞或成事故元凶

波音737max首次引入电传飞控 这一漏洞或成事故元凶

埃塞俄比亚航空载157人失事客机无人生还 机上有8名中国乘客1/11
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[文/观察者网专栏作者 施洋]
本周最重大的新闻，可能就是埃航空难所引发的波音737MAX系列客机的全球停飞了。目前事故调查尚未正式出炉，但有关该机飞控系统中的机动特性增稳系统（简称MCAS）可能错误启动引发飞机坠毁的推测，却已经被各方“预定”为事故的主要原因。
虽然这只是一款民用飞机，但飞控对于现代航空业而言的重要性显然值得我们深思；与此同时，中美两国的新一轮军费预算纷纷出炉，作为“大国竞争”的重要指标，显然也值得做一番比较。
飞控的升级与保留
3月10日，埃塞俄比亚航空一架波音737MAX 8飞机发生坠机空难，这是继去年10月29日印尼狮航空难事故之后，波音737MAX 8飞机发生的第二起空难。这次空难导致机上157人全部遇难，包括8名中国公民。

连续的两起空难把波音737MAX推上了风口浪尖
由于此次事故的客机也是以俯冲的姿态坠毁，加上出事机型同为波音737MAX 8型，再加上此次埃航空难的出事高度更低，时间更短，且此前其他波音737MAX客机在起飞过程中也曾多次遇到机动特性增稳系统故障启动的情况，因此有关埃航客机与2018年印尼狮航空难原因相同的推测迅速出现。
在连续的事故和事故可能因为飞机技术缺陷导致的担忧下，以中国民航局为首，全球多国航空管制机构和航空公司相继宣布停飞波音737MAX系列客机，最终，连美国的FAA也宣布停飞波音737MAX，最终宣告了波音737MAX系列在几乎是全球范围内的停飞。

波音737MAX作为波音新一代的重要机型，其销量必然会受此打击
当然，此次事故以及国内关于波音737MAX停飞的风波，也让各大媒体和自媒体给公众科普了一波有关民航客机，尤其是波音737MAX有关的飞行控制系统以及波音此次专门增加的机动特性增稳系统的相关情况。而波音公司在机动特性增稳系统设计上的漏洞以及其所产生的“人机互搏”的情况，也毫无疑问地反映了波音737MAX设计团队本身的一些局限性。
从飞控的角度上说，波音737MAX在737系列里可算是有着巨大进步的型号——此前的三代波音737虽然在性能上有了几乎翻天覆地的变化，让一款1967年首飞的民航客机直到21世纪头15年仍然能够较好满足当代各大航空公司的运营需求，但从另一些技术指标来看，那个阶段的波音737系列反而有着不少落后的地方，其中一个相当重要的“硬伤”，就是波音737发展到737NG这一代，其飞行控制系统仍然使用的是液压助力系统。而同时代的空客A320，从一开始就使用电传飞控。

波音737作为上世纪60年代开始的机型，其飞控系统一直比较保守
从飞行控制系统的角度来说，液压助力的传统飞控与电传飞控有着本质性的区别。传统飞控里，飞行员实际是直接操控飞机的各个气动翼面控制飞机飞行，每个翼面则对飞机产生一定的影响，而如果要控制飞机完成某个特定的动作，就需要同时操控多个气动面，驱动飞机进行较为复杂的机动。而电传飞控的操纵原理更加复杂，它并不是使用电力操纵飞机气动面那么简单，而是飞行员将操纵飞机的指令输入飞控计算机，并由飞控计算机在计算后给出操纵命令，让飞机的各个操纵面综合运行之后达成飞行员的要求。

如果说传统的飞机操纵系统是令行禁止、说一不二的近代化军队的话，那么电传飞控就是委托式指挥，以任务为导向的现代军队。对于当代飞机来说，电传操纵系统能够在很多时候将传统操纵时“我要怎样操作飞机达成怎样的姿态”的双重问题简化为“我需要飞机达成怎样的姿态”，极大降低飞行员在复杂环境下操作具体某个气动面的频率，减小飞行员的操作压力，从而让飞行员能够更多进行飞行策略的决策。
对于整体操纵比较平缓，相对没那么复杂的民用客机而言，电传操纵系统一般的工作并不复杂，主要是以满足飞机日常起降为主，同时对飞机的状态进行各种限制，以防飞行员的错误操作影响飞行安全。737MAX上的机动特性增稳系统在设计时主要的目的，也是为了防止飞机因为误操作导致迎角过大引发飞机失速，尽管现在来看这套系统的经常故障反而严重影响了飞行安全，实际使用中也有不少飞行员选择关闭它，但并不说明这套设备在设计的时候就毫无必要。



Boeing Design Modification for 737 MAX has UNSTABLE CENTER OF GRAVITY, by refitting with LARGER HEAVIER ENGINE on 737 Airframe and Forcing it there by manufacturing towards front, with CG shifted forward from Original 737. Hence NOSE DIVE HARD TO RECOVER!


FLAWED Maneuvering Characteristics Augmentation System (MCAS) was NOT inform to Pilots & Airlines!


Boeing will be sued CRIMINALLY! Hundreds of MAN SLAUGHTER CHARGES in 2 COUNTRIES!




Https://mil.news.sina.com.cn/jssd/2019-03-18/doc-ihsxncvh3375348.shtml


The engine is close to the nose and the Boeing 737 is unstable. The C919 design is even better.


The engine is close to the nose and the Boeing 737 is unstable. The C919 design is even better.



176



Shenzhou side sails: Can Boeing 737Max crash provide new opportunities for China C919 1/19
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On March 10th, a Boeing 737Max8 aircraft of Ethiopian Airlines crashed 6 minutes after taking off in Addis Ababa. All 157 passengers including 8 Chinese were killed. On October 29 last year, less than five months ago, Indonesian Lions Flight 610 crashed 13 minutes after taking off in Jakarta, killing all 189 people on board. After the crash, the world was stunned, and nearly 50 countries and regions including China, the United States and Europe immediately announced the full suspension of the Boeing 737Max series. At present, China is developing the competitive model C919 of the Boeing 737Max aircraft. Then, will the Boeing 737Max's no-flying order make Boeing slump, and can China's C919 open a new day? This issue of "sheathing" came to talk about the Boeing 737Max was banned from flying.


Recently, the Boeing 737MAX8 passenger plane crash has received global attention. Regarding the fall, and the fall of the 737MAX8 of Indonesian Lion Air five months ago, many speculations point to Boeing's MCAS system.
Boeing 737MAX8 passenger plane crash caused global concern Boeing 737MAX8 passenger plane crash caused global concern

The engines of most transport aircraft and civil airliners are all of a standard round shape, because they must conform to the size structure of the engine's electric fan, as well as the smoothness of the engine's intake air and the aerodynamic layout of the aircraft. But the Boeing 737 series is a special case. Its engine intake is not circular, but a flat design on the engine's air intake close to the ground. Because the original design of the Boeing 737 caused the wing to be too low from the ground. In order to prevent the engine intake port from being too low to suck in debris, the starting port can only be lifted upwards.

To make matters worse, the 737MAX series uses a larger diameter engine. To prevent the engine from approaching the ground, the engine front is used, so the 737MAX series engine is closer to the nose. However, there is a disadvantage in that the center of gravity of the aircraft is unstable. The Boeing 737 MXA's control system adopts a static and unstable design, and the computer will automatically intervene when it encounters airflow and stall. This is also the main reason why many people in the aviation industry think that Indonesian Lion Air and Egypt Air crashed.
Boeing 737MAX series wing position is too low design is not enough Boeing 737MAX series wing position is too low is not enough design

The most obvious sign of the 737MAX is the new shark fin winglet. However, the newly-installed LEAP-1B engine has a large diameter, while the Boeing 737's landing gear is a small short leg. To avoid the engine being too close to the ground, its installation position must be moved forward and raised. But this also brings a certain head-up torque, so that the aircraft is always upturned during the leveling process. So Boeing also had to add the MCAS control system. Last year, the incident of Lion Air was likely to be due to this system. This time, the crash may also be related to this.

MCAS may be too sensitive. When it is perceived that the angle of attack is too high, it is possible to force the elevator over the pilot's control! According to relevant sources, it is very likely that the accident is that the elevator after the control has placed the aircraft in a subduction state. Therefore, the two accidents are that the aircraft is swooping toward the ground.

Of course, the real reason should be waiting for the results of the investigation. If this is the case, the design of the Boeing 737MAX is clearly flawed, and the future of the aircraft will be very worrying. But the 737 MAX series is the only single-channel airliner that Boeing can now come up with. In the aggressive situation of the aggressive Airbus 320NEO series, Boeing can only re-develop this level of single-aisle passenger aircraft in addition to MAX, which brings significant benefits to China's C919.
The Civil Aviation Administration of China has stopped all domestic 737max domestic civil aviation administrations have suspended all domestic 737max

The Chinese C919 aircraft design is the latecomer. It fully refers to the experience of all aspects, especially the Boeing 737's wing position is too low, can not install the engine at will. Therefore, for the C919, its starting point and overall design is higher than the Boeing 737.

The response of the Civil Aviation Administration of China was also very fast. The 737max has been grounded for passenger safety considerations. At present, all Boeing 737MAX aircraft in China are grounded for inspection to ensure the safety of aircraft and passengers. According to reports, we currently have a total of 96 Boeing 737MAX aircraft. For these airlines, grounding may put considerable pressure on daily flights.
China's C919 passenger aircraft can replace it with the Chinese C919 passenger aircraft.

Although there are so many problems with the Boeing 737MAX8, you don't have to worry too much. With the advancement of our industrial level and scientific and technological level, China's research on the C919 trunk aircraft is about to be put into operation, and the ARJ-21 regional airliner, which was put into operation earlier, has been in service for five years. American aircraft are not safe, we can choose domestic aircraft. (Author's signature: Little Point)




Https://mil.news.sina.com.cn/china/2019-03-18/doc-ihrfqzkc4748307.shtml


Boeing 737max first introduced the fly-by-wire flight control or the culprit


Boeing 737max first introduced the fly-by-wire flight control or the culprit







Ethiopian Airlines carrying 157 people crashed without passengers. There are 8 Chinese passengers on board.
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[Text / Observer Network columnist Shi Yang]

The most important news of the week may be the global grounding of the Boeing 737MAX series of passenger aircraft caused by the difficulty of Egypt. At present, the accident investigation has not been officially released, but the maneuvering characteristics stabilization system (MCAS) in the aircraft flight control system may be wrongly initiated to cause the crash of the aircraft, but it has been "scheduled" by the parties as the main cause of the accident.

Although this is only a civil aircraft, the importance of flight control for the modern aviation industry clearly deserves our deep thought. At the same time, the new round of military budgets of China and the United States has been released, as an important indicator of "great power competition." Obviously it is worth doing a comparison.

Flight Control Upgrade and Retention

On March 10th, a Boeing 737MAX 8 aircraft crashed in Ethiopian Airlines. This was the second air crash of the Boeing 737MAX 8 aircraft following the October 29th Indonesian Lion Air accident. The air crash caused all 157 people on board to die, including eight Chinese citizens.

Two consecutive air crashes pushed the Boeing 737MAX to the cusp

Because the passenger plane of the accident also crashed in a dive posture, and the accident model was the same as the Boeing 737MAX 8 type, coupled with the difficulty of the aircraft, the time was shorter and the time was shorter, and other Boeing 737MAX passenger planes were During the take-off process, the faulty start-up of the maneuvering characteristics stabilization system has been encountered many times. Therefore, the speculation that the E-Airliner is the same as the cause of the Indonesian Lion Air in 2018 is rapidly emerging.

Under the fear of continuous accidents and accidents due to technical defects in the aircraft, headed by the Civil Aviation Administration of China, the global multinational air traffic control agencies and airlines have announced the suspension of the Boeing 737MAX series passenger aircraft. In the end, even the FAA of the United States announced the suspension of Boeing. The 737MAX finally announced the grounding of the Boeing 737MAX series on an almost global scale.

Boeing 737MAX is an important model of Boeing's new generation, and its sales will inevitably be hit.

Of course, the accident and the domestic turmoil about the Boeing 737MAX grounding also allowed the major media and the media to give the public a wave of relevant civil aviation aircraft, especially the flight control system related to the Boeing 737MAX and the specially added maneuver of Boeing. The relevant situation of the characteristic stabilization system. Boeing's vulnerability in the design of the mobile stability system and the resulting "human-machine interaction" also undoubtedly reflect some of the limitations of the Boeing 737MAX design team itself.

From the perspective of flight control, the Boeing 737MAX can be regarded as a model with great progress in the 737 series. The previous three generations of Boeing 737 have almost changed dramatically in performance, letting a civil aircraft that first flew in 1967 until In the first 15 years of the 21st century, it still better meets the operational needs of major airlines. However, from other technical indicators, the Boeing 737 series at that stage has many backward places, one of which is quite important. "The Boeing 737 has evolved to the 737NG generation, and its flight control system still uses a hydraulic booster system. The contemporary Airbus A320 used telex flight control from the beginning.

The Boeing 737 has been a model since the 1960s, and its flight control system has been conservative.

From the perspective of the flight control system, the traditional flight control of hydraulic power is essentially different from the fly-by-wire control. In the traditional flight control, the pilot actually controls the aircraft's various aeronautical airfoil to control the aircraft flight. Each airfoil has a certain impact on the aircraft. If you want to control the aircraft to complete a specific action, you need to control multiple aircraft at the same time. The aerodynamic surface drives the aircraft for more complex maneuvers. The operating principle of the fly-by-wire flight control is more complicated. It is not as simple as using the air to operate the aerodynamic surface of the aircraft. Instead, the pilot inputs the command to operate the aircraft into the flight control computer, and the flight control computer gives the manipulation command after calculation. The pilot's requirements are met after the various control surfaces of the aircraft are integrated.

If the traditional aircraft control system is a modernized army that prohibits and speaks for a long time, then the telex flight control is a commission-oriented, task-oriented modern army. For contemporary aircraft, the fly-by-wire system can, in many cases, simplify the dual problem of “how do I operate the aircraft to achieve a posture” in the traditional maneuvering process, “I need to make a gesture for the aircraft”, which greatly reduces the pilot’s complexity. The frequency of operating a specific aerodynamic surface in the environment reduces the pilot's operating pressure, allowing the pilot to make more decisions on flight strategy.

For the civil aircraft with relatively simple overall operation and relatively complicated, the general work of the fly-by-wire control system is not complicated, mainly to meet the daily take-off and landing of the aircraft, and to impose various restrictions on the state of the aircraft. The wrong operation of the pilot affects flight safety. The main purpose of the maneuvering stability system on the 737MAX is to prevent the aircraft from stalling due to excessive angle of attack caused by misoperation. Although the current failure of this system has seriously affected flight safety, the actual use There are also many pilots who choose to turn it off, but it does not mean that the equipment is not necessary at the time of design.

 

[syed putra]

Boeing was about to replace 737 with 797 anyway.

 

[tun_dr_m]

Boeing was about to replace 737 with 797 anyway.

This bad reputation killed customer with dirty dishonesty can still sell? Only idiot from PAP suckers will buy!

 

[tun_dr_m]

Boeing was about to replace 737 with 797 anyway.

4636 pcs of 737 MAX orders to be cancelled and sued for $$$$ - overall on edge of BANKRUPTCY!

https://mil.news.sina.com.cn/jssd/2019-03-18/doc-ihsxncvh3349140.shtml

737MAX停飞波音最坏结局:4000架订单全取消损失4万亿

2019年03月18日 08:03 新浪军事



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3月10日埃塞俄比亚航空公司的波音737MAX8型客机的坠毁，几乎像一颗炸弹，一下子引爆了网络，而作为世界两大航空巨头之一的波音公司更是被推到了风口浪尖上。本次737MAX8型飞机的坠毁，让全球对于波音737MAX系列飞机的质疑全面爆发。美国总统特朗普也于13日宣布，停飞所有的波音737MAX型飞机，并且宣布其他国家的737MAX型飞机也同时禁止飞越美国领空。如今，全球停飞737MAX型飞机的国家已经增加到48个，波音面临着前所未有的严重危机。

平心而论，波音737型客机是波音公司研发的一款优秀的中短途单通道客机，该机最早于1967年首飞，至今已经发展4代，是目前美国波音公司最畅销的客机之一。能够畅销数十年，可见737型飞机本身的性能指标并不差。
客机不同于战斗机，客机一旦失事往往就会造成数十乃至上百人的伤亡，而且飞机作为一种特殊的交通工具，一旦出事，往往就说“团灭”，极少能有幸存者逃生。所以对于客机的安全性，往往是各飞机设计和制造企业优先考虑的问题。波音737系列飞机能够持续飞行数十年，可见其安全性并非浪得虚名。但是，为什么737家族最新的MAX型飞机却在不到半年的时间里连续出现两次空难事故？

要搞清楚737MAX飞机的问题，还要先补充一点航空技术知识：民航客机要追求飞机的经济性、安全性和可靠性，这几个要素缺一不可。所以民航飞机首先要进行气动外形的设计评估，以便取得最优的气动外形，进而让飞机的经济性最优，然后在这个基础上综合考虑安全性和飞机的可靠性。所以任何一款民航飞机，都是几个要素综合作用的结果。

民航飞机为了确保最优气动，普遍都采用下单翼设计，发动机则直接吊挂在机翼上，这样可以确保飞机的效率最优。但是如今航空发动机的体积尺寸越来越大，始于1967年的波音737的原始气动设计，已经无法适应今天的新式发动机尺寸。而发动机距离地面高度过低，会导致在起飞和降落中吸入杂物，进而导致飞机失事。按照常理，这种情况应该是加长起落架，重新修改飞机重心设计，保证发动机到地面的安全距离以确保飞机安全。但是波音又不想修改原始设计，毕竟如果修改气动外形，那么成本可就大了，弄不好就和全新设计一款飞机差不多。所以波音采用了偷懒的方式，只是将发动机位置略微前移，避开飞机机身上的最低位置，从而提升飞机的安全性。

但是，飞机气动是飞机性能的根本所在，说是牵一发而动全身的问题也不为过。波音这样修改了飞机气动之后，导致737MAX型飞机出现不稳定，特别是有抬头的倾向。这个问题是由于波音修改了737MAX型飞机的气动而导致的，无法用物理方式解决，所以波音选择在飞控软件上打个补丁，专门增加一个监测飞机抬头的程序，一旦发现飞机有抬头趋势，立即自动调整压低机头。但是就是这个“安全补丁”却成为了737MAX型飞机最大的缺陷。因为设计人员在编写程序代码时，将其至于飞行员权限之上，也就是说系统一旦监测到飞机抬头，就会立即自动操纵飞机俯冲，这个过程飞行员无法干预。

去年印尼狮航空和本次埃塞航空的737MAX型飞机都存在这个问题，根据后续公布的雷达监测数据显示，飞机在坠毁之前都呈现大起大落的飞行态势，由此可以判断，这完全就是飞行员在和飞控系统“搏斗”，只不过飞控系统搏赢了，飞机也就坠毁了。
波音公司作为全球两大顶级民航机制造商之一，其设计经验和市场反馈自然是不差的，但是由于737MAX型飞机的问题，显然波音已经遭受到重创：波音公司的股票价格在事发后4天内下跌了13%，而且这恐怕仅仅是噩梦的开始。

根据波音公司的财报显示，737MAX型飞机的订单总数为5012笔——这占据波音公司全部订单合同的80%！而且这些订单至今仅完成376笔，还有4636笔尚未完成，价值高达5800亿美元！目前已有印尼狮航等多家航空公司计划取消737MAX系列的订单，如果这4636笔订单被全部取消，再加上对遭停飞的航空公司的赔偿，波音公司可见的经济损失就将超过6000亿美元，约合4万亿人民币！
严格来说，波音的问题最终还是出在内部，因为对于737型飞机太过于信赖，以至于对潜在问题漠不关心，出了事故还不设法整改，甚至企图遮掩，这就犯了大忌。而事实也将证明：“出来混，迟早要还的！”波音公司最终必将为其自身的作为埋单，只不过这个单有点大，波音能否买得起，恐怕就难说了！（作者署名：利刃军事 利刃/龙猫）

The worst ending of the 737MAX flight Boeing: 4000 orders canceled the loss of 4 trillion
March 18, 2019 08:03 Sina military
403

On March 10th, the crash of the Boeing 737MAX8 passenger aircraft of Ethiopian Airlines was almost like a bomb, which suddenly detonated the network. Boeing, one of the world's two major aviation giants, was pushed to the cusp. The crash of the 737MAX8 aircraft caused a global outbreak of doubts about the Boeing 737MAX series. US President Trump also announced on the 13th that it would suspend all Boeing 737MAX aircraft and announced that other countries' 737MAX aircraft are also prohibited from flying over US airspace. Today, the number of countries that have grounded the 737MAX aircraft has increased to 48, and Boeing is facing an unprecedented serious crisis.

In all fairness, the Boeing 737 is an excellent mid- and short-haul single-passenger aircraft developed by Boeing. It first flew in 1967 and has been developed for four generations. It is one of the best-selling passenger aircraft of Boeing in the United States. Can be sold for decades, it can be seen that the performance of the 737 aircraft itself is not bad.

Passenger planes are different from fighters. Once a passenger plane crashes, it will cause dozens or even hundreds of casualties. Moreover, as a special means of transportation, the aircraft often says "group destruction" and there are very few survivors to escape. Therefore, the safety of passenger aircraft is often a priority for aircraft design and manufacturing companies. The Boeing 737 series can continue to fly for decades, showing that its safety is not a name. However, why did the 737 family's latest MAX aircraft have two consecutive air crashes in less than half a year?

To understand the problem of the 737MAX aircraft, we must first add a little knowledge of aviation technology: the passenger aircraft should pursue the economy, safety and reliability of the aircraft. These elements are indispensable. Therefore, the civil aviation aircraft must first evaluate the design of the aerodynamic shape in order to obtain the optimal aerodynamic shape, so as to optimize the economics of the aircraft, and then comprehensively consider the safety and the reliability of the aircraft. Therefore, any civil aircraft is the result of a combination of several factors.

In order to ensure optimal aerodynamics, civil aviation aircraft generally adopt a lower wing design, and the engine is directly suspended on the wing, which ensures the efficiency of the aircraft is optimal. But today's aero-engines are getting bigger and bigger, and the original aerodynamic design of the Boeing 737, which began in 1967, has been unable to adapt to today's new engine sizes. The fact that the engine is too low from the ground can cause debris to be inhaled during take-off and landing, which can cause the plane to crash. According to common sense, this situation should be to lengthen the landing gear, re-engineer the design of the center of gravity of the aircraft, and ensure the safe distance from the engine to the ground to ensure the safety of the aircraft. But Boeing doesn't want to modify the original design. After all, if you modify the aerodynamic shape, the cost can be big. If you don't get it, it will be similar to a new design. Therefore, Boeing adopted a lazy way, just moving the engine position slightly forward, avoiding the lowest position on the fuselage of the aircraft, thereby improving the safety of the aircraft.

However, aircraft aerodynamics is the fundamentals of aircraft performance, and it is not an exaggeration to say that it is a matter of pulling the whole body. After Boeing modified the aerodynamics of the aircraft, the 737MAX aircraft became unstable, especially with a tendency to look up. This problem is caused by Boeing's modification of the aerodynamics of the 737MAX aircraft, which cannot be solved physically. Therefore, Boeing chose to patch the flight control software to add a program to monitor the aircraft's head-up. Once the aircraft is found to have a head-up trend, Automatically adjust the lowering head immediately. But this "security patch" has become the biggest flaw of the 737MAX aircraft. Because the designer writes the program code, it is above the pilot's authority, which means that once the system monitors the aircraft's head, it will automatically control the aircraft's dive, which is impossible for the pilot to intervene.

Last year, Indonesian Lion Air and the 737MAX aircraft of Ethiopian Airlines all had this problem. According to the radar monitoring data released later, the aircraft showed a big ups and downs before the crash. It can be judged that this is exactly the pilot’s The flight control system "wrested", but the flight control system won, and the aircraft crashed.

As one of the world's top two manufacturers of civil aircraft, Boeing's design experience and market feedback are naturally not bad, but due to the problem of the 737MAX aircraft, it is clear that Boeing has been hit hard: Boeing's stock price after the incident It fell 13% in 4 days, and this is probably just the beginning of a nightmare.

According to Boeing’s financial report, the total number of orders for the 737MAX aircraft is 5012 – which accounts for 80% of Boeing’s entire order contract! And these orders have only completed 376 so far, and 4636 have not been completed, worth up to 580 billion US dollars! At present, many airlines such as Indonesia Lion Air have planned to cancel the 737MAX series of orders. If these 4636 orders are cancelled, plus the compensation for the airlines that have been grounded, the economic loss that Boeing can see will exceed 6000. Billion dollars, about 4 trillion yuan!

Strictly speaking, Boeing’s problem is ultimately internal, because the 737 is so trustworthy that it is indifferent to potential problems, and it’s a big taboo if it doesn’t try to rectify the accident or even attempt to cover it. And the facts will also prove: "Get out of the mix, sooner or later you have to pay back!" Boeing will eventually pay for its own, but this one is a bit big, Boeing can afford it, I am afraid it is hard to say! (Author's signature: Bladed Military Blade / Totoro)

 

[Ang4MohTrump]

https://mil.news.sina.com.cn/jssd/2019-03-18/doc-ihsxncvh3375348.shtml

发动机接近机头致波音737重心不稳 C919设计更胜一筹

发动机接近机头致波音737重心不稳 C919设计更胜一筹



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沉舟侧畔千帆过：波音737Max坠毁能否为中国C919提供新机遇1/19
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3月10日，埃塞俄比亚航空一架波音737Max8飞机在亚的斯亚贝巴起飞后6分钟坠毁，机上包括8名中国人在内的157名乘客全部丧生。而在不到5个月前的去年10月29日，印度尼西亚狮航610航班才在雅加达起飞后13分钟坠毁，机上189人也全部丧生。坠机事故发生后，全球哗然，包括中美欧在内的近50个国家和地区随即宣布全面停飞波音737Max系列飞机。目前中国正在研制波音737Max飞机的竞争机型C919，那么波音737Max的禁飞令是否会让波音一蹶不振，而中国的C919又能否借此打开新的一片天？本期《出鞘》就来谈波音737Max被禁飞。


最近，波音737MAX8客机失事的事件受到了全球关注。关于此次坠落事件，以及5个月前印度尼西亚狮航的737MAX8的坠落事件，很多推测都指向波音的MCAS系统。

波音737MAX8客机失事引发全球关注
大多数运输机和民航客机的发动机都是一个标准的圆形，因为既要符合引擎电风扇的尺寸结构，又要符合引擎进气流畅和飞机的气动布局的最佳化。但是波音737系列客机是特例。它的发动机进气口不是圆形，而是在发动机进气口接近地面的部位刻意进行了扁平设计。因为波音737原始的设计导致机翼距地面过低。为了防止发动机进气道过低吸进杂物，所以只能将发动进气道修形向上抬高。
更为严重的是，737MAX系列采用了直径更大的发动机，为防止引擎过度接近地面采用了发动机前置的方案，所以737MAX系列的发动机更接近机头。但是这样一来就有一个缺点，飞机的重心不稳定，波音737 MXA的操纵系统采用了静不安定设计，遇到气流和失速电脑会进行自动干预。这也是航空界很多人士认为印尼狮航和埃航失事的主要原因。

波音737MAX系列机翼位置过低是设计不足
737MAX最明显的标志是采用新性的鲨鱼鳍式翼梢小翼。但是新换装的LEAP-1B发动机直径大，而波音737的起落架却是个小短腿，为避免发动机距地面过近，必须将其安装位置前移并升高。但这也带来了一定的抬头力矩，让飞机在平飞过程中总是上翘。因此波音也不得不增加了MCAS操纵系统。去年狮航出事很可能久是因为这个系统，此次这次坠机也有可能与此有关。
MCAS可能敏感度过高，在感知认定迎角过高时，它有可能越过飞行员的控制强行操纵升降舵！据相关人士称，很有可能这次事故就是超越控制后的升降舵让飞机处于俯冲状态，因此这两次事故都是飞机呈俯冲姿态冲向地面。
当然，真正的原因应该等待调查结果。如果真是这种原因，波音737MAX的设计分明存在缺陷，该机的前景将十分堪忧。但是737 MAX系列是波音现在唯一能拿得出手的单通道客机。在势头正猛的空客320NEO系列的咄咄逼人的情况下，波音除了MAX就只能耗时数年重新研制这一级别的单通道客机，这就为中国的C919带来了重大利好。

国内民航总局已经停飞国内所有737max
中国C919飞机设计是后来者居上。它充分参考了各方面的经验，特别是波音737的机翼位置太低，不能随意安装引擎。因此，对C919来说，它的起点和总体设计要比波音737更高一筹。
国内民航总局这次的反应也很快，出于旅客安全考虑已经停飞了737max。目前国内所有波音737MAX型飞机全部停飞待检，以保证飞机和乘客安全。据透露，我们目前总共有96架波音737MAX型飞机，对于这些航空公司来说，停飞可能会给日常航班带来相当大的压力。

中国C919客机可取而代之

波音737MAX8型飞机虽然有这么多的问题，但不必太担心。随着我们的工业水平和科学技术水平的进步，我国研究的C919型干线飞机即将投入，更早投入运营的ARJ-21支线客机也已服役5年。美国的飞机不安全，我们可以选择国产飞机。（作者署名：小小点兵台）


Https://mil.news.sina.com.cn/jssd/2019-03-18/doc-ihsxncvh3375348.shtml


The engine is close to the nose and the Boeing 737 is unstable. The C919 design is even better.


The engine is close to the nose and the Boeing 737 is unstable. The C919 design is even better.



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Shenzhou side sails: Can Boeing 737Max crash provide new opportunities for China C919 1/19
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On March 10th, a Boeing 737Max8 aircraft of Ethiopian Airlines crashed 6 minutes after taking off in Addis Ababa. All 157 passengers including 8 Chinese were killed. On October 29 last year, less than five months ago, Indonesian Lions Flight 610 crashed 13 minutes after taking off in Jakarta, killing all 189 people on board. After the crash, the world was stunned, and nearly 50 countries and regions including China, the United States and Europe immediately announced the full suspension of the Boeing 737Max series. At present, China is developing the competitive model C919 of the Boeing 737Max aircraft. Then, will the Boeing 737Max's no-flying order make Boeing slump, and can China's C919 open a new day? This issue of "sheathing" came to talk about the Boeing 737Max was banned from flying.


Recently, the Boeing 737MAX8 passenger plane crash has received global attention. Regarding the fall, and the fall of the 737MAX8 of Indonesian Lion Air five months ago, many speculations point to Boeing's MCAS system.
Boeing 737MAX8 passenger plane crash caused global concern Boeing 737MAX8 passenger plane crash caused global concern

The engines of most transport aircraft and civil airliners are all of a standard round shape, because they must conform to the size structure of the engine's electric fan, as well as the smoothness of the engine's intake air and the aerodynamic layout of the aircraft. But the Boeing 737 series is a special case. Its engine intake is not circular, but a flat design on the engine's air intake close to the ground. Because the original design of the Boeing 737 caused the wing to be too low from the ground. In order to prevent the engine intake port from being too low to suck in debris, the starting port can only be lifted upwards.

To make matters worse, the 737MAX series uses a larger diameter engine. To prevent the engine from approaching the ground, the engine front is used, so the 737MAX series engine is closer to the nose. However, there is a disadvantage in that the center of gravity of the aircraft is unstable. The Boeing 737 MXA's control system adopts a static and unstable design, and the computer will automatically intervene when it encounters airflow and stall. This is also the main reason why many people in the aviation industry think that Indonesian Lion Air and Egypt Air crashed.
Boeing 737MAX series wing position is too low design is not enough Boeing 737MAX series wing position is too low is not enough design

The most obvious sign of the 737MAX is the new shark fin winglet. However, the newly-installed LEAP-1B engine has a large diameter, while the Boeing 737's landing gear is a small short leg. To avoid the engine being too close to the ground, its installation position must be moved forward and raised. But this also brings a certain head-up torque, so that the aircraft is always upturned during the leveling process. So Boeing also had to add the MCAS control system. Last year, the incident of Lion Air was likely to be due to this system. This time, the crash may also be related to this.

MCAS may be too sensitive. When it is perceived that the angle of attack is too high, it is possible to force the elevator over the pilot's control! According to relevant sources, it is very likely that the accident is that the elevator after the control has placed the aircraft in a subduction state. Therefore, the two accidents are that the aircraft is swooping toward the ground.

Of course, the real reason should be waiting for the results of the investigation. If this is the case, the design of the Boeing 737MAX is clearly flawed, and the future of the aircraft will be very worrying. But the 737 MAX series is the only single-channel airliner that Boeing can now come up with. In the aggressive situation of the aggressive Airbus 320NEO series, Boeing can only re-develop this level of single-aisle passenger aircraft in addition to MAX, which brings significant benefits to China's C919.
The Civil Aviation Administration of China has stopped all domestic 737max domestic civil aviation administrations have suspended all domestic 737max

The Chinese C919 aircraft design is the latecomer. It fully refers to the experience of all aspects, especially the Boeing 737's wing position is too low, can not install the engine at will. Therefore, for the C919, its starting point and overall design is higher than the Boeing 737.

The response of the Civil Aviation Administration of China was also very fast. The 737max has been grounded for passenger safety considerations. At present, all Boeing 737MAX aircraft in China are grounded for inspection to ensure the safety of aircraft and passengers. According to reports, we currently have a total of 96 Boeing 737MAX aircraft. For these airlines, grounding may put considerable pressure on daily flights.
China's C919 passenger aircraft can replace it with the Chinese C919 passenger aircraft.

Although there are so many problems with the Boeing 737MAX8, you don't have to worry too much. With the advancement of our industrial level and scientific and technological level, China's research on the C919 trunk aircraft is about to be put into operation, and the ARJ-21 regional airliner, which was put into operation earlier, has been in service for five years. American aircraft are not safe, we can choose domestic aircraft. (Author's signature: Little Point)