Re: KING BLASTER CLASS TANK ready to export roll all others into used sanitary napkin
I read something about this new 125mm gun barrel is a multifunction development by North University of China, that works for both flat & curved trajectory upto 40km range. It is capable to fire missile. I believe that is the same gun now used on this tank.
http://military.dwnews.com/news/2015-06-12/59660248.html
解放军测试全球威力最大火炮
大中小 2015-06-12 18:49:16
多维军事
近日，在以培养地面兵器科研人才闻名的中北大学，一门外形雄伟的长身管大口径火炮亮相，在网上引起军迷热议。根据公开报道，这门被明确称为“125mm多功能火炮”的大炮，正是由中北大学研制，并由北方机器有限责任公司生产，于6月10日正式移交校方。
坦克炮？榴弹炮？
“125mm多功能火炮”的照片一经曝光，很快在诸多军事网站上被冠以种种神奇的名目，“可平射可曲射可高射”、“反直升机反巡航导弹反火箭弹”；而诸如“射程40公里”“射高10,000米”等种种关于其指标的说法更是充斥网络。
但在中北大学官方网站10日的新闻稿中，提到其性能指标的只有这样一句，“实弹射击试验证明，该门火炮是目前世界上初速和威力最大的火炮，体现了我国火炮研究的重要技术成果，为我国武器装备体系注入新生力量。”
125mm是解放军96和99系列主战坦克主炮的口径，125mm坦克炮的身管长度是口径的48倍左右（48倍径），是解放军现役初速和威力最大的坦克炮。
解放军火炮现身中缅边境
而从外观上估算，“125mm多功能火炮”的身管长度至少在60倍径。更长的身管和更大的药室容积，确实会赋予其远胜于解放军现役坦克炮的初速和威力。
但仔细观察这门大炮的细节就能发现，它和坦克炮有着很多明显的区别，反而在诸如大型多室炮口制退器、极大的仰角范围、后部液压平衡机等等方面能看到典型榴弹炮的影子。特别是炮口制退器以及炮身抽烟装置的形制和位置，和解放军现役的05式155mm自行榴弹炮都有着相似之处。但其液压平衡机的位置又和05式不同，在身管的下方而不是上方。
更为奇特的是，虽然这是一门牵引火炮（使用的炮架和解放军59-1式130mm加农炮很相似），但从炮身和炮架的结构来看，却与一般的牵引火炮明显不同——不仅在炮身中部有着一般自行火炮才会有的抽烟装置，炮尾部还有着明显的内炮盾结构，炮架部位的延伸外形也非常独特，似乎是在模拟自行火炮炮塔部分的结构。
新概念火炮的科研探索
再看“125mm多功能火炮”展示的弹药：两种长度不同的药筒均是带有金属底的半可燃式，虽然和弹头分开展示但仍然能看出是定装弹的设计；两种弹头分别是带有尾翼的125mm榴弹和125mm稳定尾翼脱壳穿甲弹。
然而，之前对这门火炮本身细节的分析，却指向这是一门线膛炮。考虑到炮口制退器对脱壳穿甲弹的精度不利，因此，这几枚炮弹和这门炮的关系值得怀疑。
虽然传说中的“坦克炮+加农榴弹炮合一”的设定让人眼前一亮（这也是很多爱好者心目中未来大口径火炮发展的一个方向），但从装备技术角度上讲，强调发射药完全燃烧，降低初速波动以确保多发弹着点一致性的榴弹炮，和强调炮管减重，对初速波动不敏感的坦克炮是难以做到统一的。
由此推断，“125mm多功能火炮”目前可能更多是一种对新概念火炮进行科研探索的产物，而要发展成实用装备，其可能性不大。
有装备分析人士告诉记者，这门125mm炮可能一开始是作为05式155mm自行榴弹炮的测试工作而制造的试验炮。类似的缩小口径的测试炮在历史上也有例子，前苏联曾建造过的“斯大林格勒”级战列巡洋舰的62倍径305mm长身管主炮，在研制中就曾使用过超长身管的76mm测试炮。这类测试炮不仅可以用于模拟试验火炮的弹道效能，同时也能用于火炮的诸多重要部件，例如液压平衡机和高低机等的先期测试。
https://read01.com/2zGzJQ.html
美媒:中國研製世界最強射速最高坦克炮
2016-05-16 07:46:49
美國《大眾科學》月刊網站6月20日發表了傑弗里·林和P·W·辛格的題為《中國建造世界上射速最高的坦克炮，然後又試圖掩蓋它》的報導，編譯如下：
正在研製中國99式坦克炮照片
雖然諸如俄羅斯的「阿瑪塔」主戰坦克和土耳其的「阿爾泰」主戰坦克等新型坦克正在世界裝甲車舞台上大顯身手，但是中國擁有的一款新型坦克炮或許可以擊敗它們。今年6月10日，中北大學的兵器127廠在一個儀式上向解放軍軍官移交了一種新型125毫米火炮。兵器127廠稱，這款新型多功能火炮擁有世界上所有120毫米/125毫米級別火炮中最遠的射程、最高的射速以及最強的穿透力。富有戲劇性的是，6月14日，所有涉及這款新型125毫米火炮的內容都被從中北大學的網站上移除，這說明官方希望在試射期間保密。
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報導說，這款多功能火炮通過很高的身管長度與口徑比(至少60比1)以及更大的彈藥筒(可以裝填更多發射藥)實現了高性能。而現役身管最長的坦克炮是德國的120毫米火炮，其身管長徑比為55比1。儘管這款多功能火炮目前裝載在拖曳炮架上，但是若干特點說明它旨在用於密閉空間(即坦克炮塔)。
炮管中央有一個抽氣裝置，用於協助排放殘留在炮膛內的殘留火藥氣體，以防這些有毒氣體在密閉空間內積聚，使坦克乘員中毒。這款多功能火炮的駐退機裝在拖曳炮架框架的上方和火炮炮閂的上方，這種設計是為了儘可能增強水平射擊(即反坦克直接瞄準射擊)能力，而不是高射界炮擊能力。
據報導，這款多功能火炮射出的尾翼穩定脫殼穿甲彈(APFSDS)的初速可達每秒2000米，這些炮彈能把動能從推進部集中到穿甲彈彈芯的正面，其面積相當於一枚50美分硬幣大小。相比之下，中國目前使用的125毫米尾翼穩定脫殼穿甲彈的初速為每秒1700米，德國L55坦克炮射出的穿甲彈初速為每秒1750米，美國的M829A3穿甲彈的初速僅為每秒1555米(但是它的體積和質量更大，被賦予的動能也越高)。
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同樣重要的是，新型坦克炮使用的是整裝式炮彈，而不是諸如99式和96式主戰坦克等中國現役坦克所使用的125毫米分裝式炮彈。那些坦克上面的自動裝彈機由於尺寸限制，僅能使用125毫米分裝式炮彈，由此也就導致尾翼穩定脫殼穿甲彈的彈芯體積較小、動能較少。新型的125毫米整裝式炮彈允許尾翼穩定脫殼穿甲彈的彈芯做得更大，同時使口徑繼續保持在125毫米以減輕重量，而不是讓口徑增加到140毫米。
報導稱，125毫米多功能火炮很可能會裝配在中國未來的一種新式坦克上，該坦克將必須把自動裝彈機安置在後部炮塔內，而不是像99式坦克那樣把自動裝彈機架設在車身上。多功能火炮的身管長這一點或許還意味著，這種未來的中國坦克在侷促的城市空間中的迴旋餘地將十分有限。
從理論上講，這種多功能火炮的高射速使它的動能與射程足以勝任防空角色(類似於軍艦所使用的127毫米和130毫米高平兩用艦炮)，儘管當火炮瞄準高空的飛機時，坦克炮塔的尺寸限制很可能限制它的射速和射高。看上去可能性更大的是，這款多功能火炮也許會利用炮射飛彈和炮彈為中國部隊(比如距離遙遠的、呼叫對敵方陣地實施打擊的聯網步兵部隊)提供間接火力支援，儘管炮塔尺寸和駐退機再次意味著號稱的最遠40公里射程很可能只是理論上的。
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報導說，雖然中國正在對戰場機器人、無人機、步兵「外骨骼」和靈巧飛彈等新一代技術進行高調投資，但該國同樣在對坦克等傳統軍事技術進行重大改進。新型坦克炮是又一個例子，證明中國部隊(以及任何外國客戶)在未來的任何戰場上都將比現在的裝備先進得多。(編譯/馮雪)(來源：中國新聞網)
http://www.popsci.com/china-builds-worlds-fastest-tank-gun-then-tries-hide-it
[several photos]
China Builds the World's Fastest Tank Gun, Then Tries to Hide It
125mm Shells Go at Mach 6
By Jeffrey Lin and P.W. Singer posted Jun 19th, 2015 at 4:23pm
China 127th Institute Central North University 125mm tank cannon
125mm Handover Ceremony
The new 125mm cannon tech demonstrator received a public and high profile send off, complete with a large complement of PLA personnel, speeches from top CNU officials and interested onlookers. The shell cartridge on the left side of the table is over 1 meter in length.
migaoyang32 at lt.cjdby.net
While new tanks like the Russian Armata and Turkish Altay are taking the spotlight in the world of armored vehicles, China has a new tank gun that might just beat them all. The 127th Ordinance Institute, of the Central Northern University, handed over a new 125mm cannon to PLA officers at a June 10, 2015 ceremony. The Institute claims that the new multipurpose cannon will have the highest range, velocity and penetration power of any 120mm/125mm cannon in the world. Where the story gets more interesting is that by June 14, all references to the new 125mm cannon had been scrubbed from the University's website, which suggests an official desire for secrecy during tests.
China 127th Institute Central North University 125mm tank cannon
A New Multipurpose Cannon
The 127th Ordinance Research Institute's news 125mm tank cannon is the world' largest, with a barrel length over 7.5 meters and highly powerful shells.
sy_wsh at lt.cjdby.net
The multipurpose cannon achieves its high performance through a high length to caliber ratio of at least 60:1 (the longest tank gun in service is the German 120mm cannon, which has a ratio of 55:1), and a larger cartridge, that stores more propellant explosives. While the multipurpose cannon is currently mounted on a towed carriage, several characteristics suggest that it is intended in use for enclosed spaces (IE tank turrets).
China 127th Institute Central North University 125mm tank cannon
One Big Gun
Looking at the staff preparing the gun (just for the handover ceremony), it's going to require a very big and tall turret to take advantage of the gun's full elevation capabilities (though the production model may have a lower maximum angle of fire), larger than those found on current Chinese tanks. Also note the fume extractor (the smooth bulge on the midsection of the barrel) that siphons off poisonous fumes and other propellant byproducts to avoid poisoning any turret crew.
sy_wsh at lt.cjdby.net
Located on the middle of the barrel is a bore evacuator that aids in the release of combusted explosive fumes, to prevent those toxic gases from accumulating inside an enclosed space, which would otherwise poison crew members and foul the gun. The multipurpose cannon's recoil system is installed onto the top of the towed carriage frame and top of the cannon breech block, which is optimized for horizontal firing (anti-tank and direct fire) as opposed to high angle artillery fire.
China 127th Institute Central North University 125mm tank cannon
Big Hopes
The text on the red banner held up by PLA soldiers reads ""Central North University, 127th Ordnance Institute's Research Result (125mm multi-purpose gun) Handover Ceremony". If the multipurpose cannon is a success, then it will be an example of the Chinese defense industry moving into partnership with academic and academically based partners.
Hongjian via China Defense Forum
This multipurpose cannon reportedly has a muzzle velocity of 2,000m per second for armored piercing fin stabilized discarding sabot (APFSDS) rounds, whose discarding sabot concentrates the kinetic energy from propellant into frontal area of the penetrator rod, which is the size of a half dollar coin. For comparison, current Chinese 125mm APFSDS have a 1700m/s muzzle velocity, the German L55 has a muzzle velocity of 1,750m/s, and the US's M829A3 APFSDS round has a muzzle velocity of only 1,555m (but uses a larger penetrator with increased mass to increase imparted kinetic energy).
China 127th Institute Central North University 125mm tank cannon
Cannon on the Move
The 125mm multipurpose cannon tech demonstrator will be delivered to a PLA testing and proving ground. If successful, it will likely arm the next generation of Chinese main battle tanks, possibly just in time for the 70th anniversary of the People's Republic.
Weibo
Just as importantly, the new tank cannon uses one piece ammunition, in contrast to the 125mm two piece ammunition used by current Chinese tanks such as the ZTZ-99 and ZTZ-96. The autoloader on those tanks are limited to two piece 125mm ammunition due to size restrictions, which in turn results in a smaller APFSDS rod with less kinetic energy. The new one piece 125mm ammunition will allow for larger APFSDS rods, while keeping the caliber to 125mm to save weight, as opposed to scaling up to a larger caliber, such as 140mm.
China 125mm Ammunition Tank
The Old Stuff
This older two piece APFSDS 125mm ammunition's rod has a length of about 650mm, which makes it much smaller than the maximum 1200mm length for the new 125mm, one piece APFSDS shell. Its smaller rod has less mass (thus impacting enemy armor with less kinetic energy) because the hull mounted autoloaders of the ZTZ-99 and ZTZ-96 tanks are only large enough to handle smaller pieces of ammunition.
Hongjian via China Defense Forum
The 125mm multipurpose cannon is likely to be mounted on a new future Chinese tank, which will have to move its autoloader into the rear turret bustle, compared to the hull mounted ZTZ-99 autoloader. The long length of the multipurpose cannon may also mean that such future Chinese tanks would have limited maneuver room in tight urban spaces.
China 127th Institute Central North University 125mm tank cannon
Recoil Hydraulics
The recoil hydraulic tubes are positioned to so that they're attached to the top of the breech block (where the shell is loaded) and the top of the towed carriage mount. The optimizes reduction of recoil on the horizontal plane when conducting direct fire at enemy tanks, but raising the cannon to a higher elevation to fire at aircraft could damage the recoil system.
sy_wsh at lt.cjdby.net
The multipurpose cannon's high velocity gives it enough energy and range to theoretically take on anti-aircraft roles (similar to 127mm and 130mm dual purpose naval cannons), though size constraints in a tank turret would likely limit its firing rate and elevation when targeting high flying aircraft. More plausibly, the multipurpose cannon could provide indirect fire support with cannon launched missiles and shells for Chinese forces, such as distant, networked infantry units calling in strikes on enemy positions (though again turret size and recoil mechanisms means that the claimed maximum 40km range is likely theoretical).
Much as China is making high profile investments into new generation technologies battlefield robots, drones, infantry exoskeletons and smart missiles, its also making great improvements to current military technology like tanks. The new tank cannon is yet another example of how Chinese forces (and any foreign sales clients) will be far better equipped on any the battlefield of the future.
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https://www.nextbigfuture.com/2015/06/china-has-tank-gun-with-mach-6-muzzle.html
China has a tank gun with mach 6 muzzle velocity vs mach 4.6 for the US Abrams
brian wang | June 20, 2015 |
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China has a new multipurpose cannon (sy_wsh at lt.cjdby.net via Popular Science). The 127th Ordinance Research Institute’s news 125mm tank cannon is the world’ largest, with a barrel length over 7.5 meters and highly powerful shells.
The multipurpose cannon achieves its high performance through a high length to caliber ratio of at least 60:1 (the longest tank gun in service is the German 120mm cannon, which has a ratio of 55:1), and a larger cartridge, that stores more propellant explosives. While the multipurpose cannon is currently mounted on a towed carriage, several characteristics suggest that it is intended for tank turrets.
This multipurpose cannon reportedly has a muzzle velocity of 2,000 meters per second (almost mach 6) for armored piercing fin stabilized discarding sabot (APFSDS) rounds, whose discarding sabot concentrates the kinetic energy from propellant into frontal area of the penetrator rod, which is the size of a half dollar coin.
* Current Chinese 125mm APFSDS have a 1700 meters per second muzzle velocity
* German L55 has a muzzle velocity of 1,750meter per second
* US’s M829A3 APFSDS round has a muzzle velocity of only 1,555 meters per second (but uses a larger penetrator with increased mass to increase imparted kinetic energy).
The new tank cannon uses one piece ammunition, in contrast to the 125mm two piece ammunition used by current Chinese tanks such as the ZTZ-99 and ZTZ-96. The autoloader on those tanks are limited to two piece 125mm ammunition due to size restrictions, which in turn results in a smaller APFSDS rod with less kinetic energy. The new one piece 125mm ammunition will allow for larger APFSDS rods, while keeping the caliber to 125mm to save weight, as opposed to scaling up to a larger caliber, such as 140mm.
The US is working on 5600 mph (Mach 7.36) high velocity rounds. These rounds would not just be for future railguns but are being adapted for existing navy 5 inch guns and as special tank rounds.
Current work has mach 3 for naval guns. Still more than double the speed of an unguided regular shell from the service’s Mk 45 five-inch gun found on its guided missile cruisers and destroyers, according to information from NAVSEA
