S***i
发帖数: 289 | 1 Dave Mohr, 38 years working in and around NASA as a contractor, 20 years in
Shuttle program
Answered Feb 9, 2017
While I worked in the Shuttle Program, the SRB people worked down the hall
from me. Their best in-house cost estimate was that it cost betwen 2.5X and
3.0X more to re-use the SRB casings than to make them expendable.
Not exactly the way it was intended.
1.5k Views · View Upvoters · Answer requested by Richard Campbell
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Allen E Hall
yes letting them fall into the... 阅读全帖 |
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M******8
发帖数: 10589 | 2 也可以理解为聪明。
他可能会在某年月日，在美国某大学的讲坛上用流利的英文脱稿演讲：
“When I was leaving Zhong Nan Hai, hundreds of journalists thought that I
would cry, but they were wrong: I cried not but was rather glad, because my
final political objective had been reached. For a genuine statesman, his
task was not firmly grasping his power and position but propelling the
democracy and progress of the country。” |
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c****h
发帖数: 4968 | 3 不就是被中国用了n次的整体转移技术吗？读了这一段，觉得美国的工程技术已经大大
落后天朝了。按比例来讲，中国到处都在新建路桥，事故比率远远小于美国。现在给钢
铁增关税，将来基建的成本就更高了……
.... using what are called “Accelerated Bridge Construction” methods being
developed at the university.
“This method of construction reduces potential risks to workers, commuters
and pedestrians and minimizes traffic interruptions,” the release said.
Crews lifted the span from its supports, turned it 90 degrees across eight
lanes and lowered it in place, the release said. The university said it was
t... 阅读全帖 |
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x******g
发帖数: 33885 | 4 要点：2025的实现不是来自中央的2计划经济，而是来自民间的资本家
Why 'Made in China 2025' will succeed, despite Trump
Li Yuan
Published 12 Mins Ago The New York Times
China will succeed in building a powerful technology industry that will
rival the United States, even if President Trump starts a trade war to stop
it. The reason can be found on the fourth floor of a nondescript factory in
a city once famous for cheap manufacturing and prostitution.
This factory floor, in the southern Chinese city of Dongguan, once ... 阅读全帖 |
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g******t
发帖数: 18158 | 5 http://time.com/5336385/senate-approves-symbolic-resolution-trump-tariffs/
Senate Approves Symbolic Resolution in Attempt to Curb President Trump's
Mounting Tariffs
By ERIK WASSON / BLOOMBERG July 11, 2018
The U.S. Senate took President Donald Trump to task on trade but fell short
of curtailing his power to impose tariffs.
In an 88-11 vote on Wednesday, the Senate approved a symbolic motion backing
a role for Congress in requiring tariffs based on national security, such
as those Trump imposed o... 阅读全帖 |
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p***n
发帖数: 17190 | 6 https://money.udn.com/money/story/5612/3261657
巨大集團杜綉珍：以前一個中國「騎」全世界，現在要短鏈供應
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A-A+
2018-07-19 15:55天下雜誌 天下經濟論壇
巨大集團董事長杜綉珍。 圖／天下經濟論壇提供
巨大集團董事長杜綉珍。 圖／天下經濟論壇提供
2018天下經濟論壇夏季場今(19)日於台北晶華酒店舉行。論壇以主題對話「創新與轉型
的對話」開場，邀請到資談撔抡瞎径麻L劉鏡清、巨大集團董事長杜綉珍、台灣
中油公司董事長戴謙、及聯強國際集團總裁兼執行長杜書伍，針對紅色供應鏈崛起、綠
色消費意識抬頭、新科技層出不窮的現今，傳統製造產業如何在市場、客戶、生產與商
業模式的挑戰下轉型致勝？
以下是巨大集團董事長杜綉珍在此對話中的談話全文：
巨大、捷安特是跟各位一起成長，很多人都說：「我是騎捷安特長大的。」沒錯！我們
已有46年了，從1972年開始到現在。
這46年來，我們在創辦人劉金標董事長的帶領下做得非常好，營收曾在2014年達到604
億台幣、將近20億美元，稅後獲利41億元。那時候大家就說：「噢！原來傳產... 阅读全帖 |
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T**********e
发帖数: 29576 | 7 鹅毛已经宣布放弃和spacex中国发展新火箭竞争发射，中国要在2021实现第一级回收，
不知道要用垂着降落还是降落伞半空捕捉。
China completes 22nd launch this year with Gaofen-11, matches national
record
Additionally, private rocket companies Onespace and Landspace, two startups
which have emerged since a Chinese policy shift in 2014, will also aim to
perform their first orbital launches in late 2018. Expace, a nominally
private launch provider tied to China Aerospace Science and Industry
Corporation, the state-owned missile maker and defense giant, is als... 阅读全帖 |
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发帖数: 1 | 8 50年11月长津水库之战，原第三野战军精锐宋时轮第9兵团12个师15万人马企图围歼美
国海军陆战队第一师2万人，结果美国陆战一师杀出重围从海上安全撤离：在几乎8倍多
敌人的人海战术围攻之下不仅全身而退，而且带走了所有伤兵以及九万朝鲜难民。美国
陆战一师代表了所有军人的荣誉与骄傲!
自愿军第9兵团此役伤亡9万5千人，除伙夫、马弁、参谋、干事、医院的护士、文工团
员，能拿枪杆的剩下不多了。
为纪念长津一役，美国海军以长津命名的军舰，USS CHOSIN CG65：
Class and type: Ticonderoga-class guided missile cruiser
Displacement: Approx. 9,600 long tons (9,800 t) full load
Length: 567 feet (173 m)
Beam: 55 feet (16.8 meters)
Draft: 34 feet (10.2 meters)
Propulsion:
4 × General Electric LM2500 gas turbine ... 阅读全帖 |
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发帖数: 1 | 9 50年11月长津水库之战，原第三野战军精锐宋时轮第9兵团12个师15万人马企图围歼美
国海军陆战队第一师2万人，结果美国陆战一师杀出重围从海上安全撤离：在几乎8倍多
敌人的人海战术围攻之下不仅全身而退，而且带走了所有伤兵以及九万朝鲜难民。美国
陆战一师代表了所有军人的荣誉与骄傲!
自愿军第9兵团此役伤亡9万5千人，除伙夫、马弁、参谋、干事、医院的护士、文工团
员，能拿枪杆的剩下不多了。
为纪念长津一役，美国海军以长津命名的军舰，USS CHOSIN CG65：
Class and type: Ticonderoga-class guided missile cruiser
Displacement: Approx. 9,600 long tons (9,800 t) full load
Length: 567 feet (173 m)
Beam: 55 feet (16.8 meters)
Draft: 34 feet (10.2 meters)
Propulsion:
4 × General Electric LM2500 gas turbine ... 阅读全帖 |
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h***n
发帖数: 1275 | 10 recoilless rifle is designed to eject some form of counter-mass such as
propellant gas from the rear of the weapon at the moment of firing, creating
forward thrust that counteracts most of the weapon's recoil. |
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s******r
发帖数: 5309 | 11 Ammon Bundy breaks with Trump on anti-migrant rhetoric: ‘It’s all fear-
based’
By Kyle Swenson November 28 at 5:05 AM
The images beaming out of the U.S.-Mexico border — migrants storming
barricades, children gagging on tear gas — have intensified the debate
regarding the Trump administration’s bare-knuckled approach to immigration.
On Tuesday night, an unlikely critic took President Trump to task for his
comments portraying members of the migrant caravan now massed in Tijuana as
“criminals” and ... 阅读全帖 |
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发帖数: 1 | 12 Hermes had an overall length of 600 feet (182.9 m), a beam of 70 feet 3
inches (21.4 m), and a draught of 23 feet 3 inches (7.1 m) at deep load. She
displaced 10,850 long tons (11,020 t) at standard load.[8] Each of the ship
's two sets of Parsons geared steam turbines drove one propeller shaft at a
speed of 25 knots (46 km/h; 29 mph).[5] Steam was supplied by six Yarrow
boilers[9] operating at a pressure of 235 psi (1,620 kPa; 17 kgf/cm2).[5]
The turbines were designed for a total of 40,000 sha... 阅读全帖 |
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发帖数: 1 | 13 China just tested the world’s most powerful naval gun, and US intelligence
says it will be ready for warfare by 2025
PUBLISHED WED, JAN 30 2019 • 11:57 AM EST | UPDATED 6 HOURS AGO
Amanda Macias
@AMANDA_M_MACIAS
KEY POINTS
China tested the world’s most powerful naval gun earlier this month and it
’s expected to enter China’s arsenal by 2025, according to sources with
direct knowledge of a U.S. intelligence report.
The warship-mounted electromagnetic railgun was first seen in 2011 and
under... 阅读全帖 |
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发帖数: 1 | 14 Hermes had an overall length of 600 feet (182.9 m), a beam of 70 feet 3
inches (21.4 m), and a draught of 23 feet 3 inches (7.1 m) at deep load. She
displaced 10,850 long tons (11,020 t) at standard load.[8] Each of the ship
's two sets of Parsons geared steam turbines drove one propeller shaft at a
speed of 25 knots (46 km/h; 29 mph).[5] Steam was supplied by six Yarrow
boilers[9] operating at a pressure of 235 psi (1,620 kPa; 17 kgf/cm2).[5]
The turbines were designed for a total of 40,000 sha... 阅读全帖 |
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发帖数: 1 | 16 Name: Chosin
Namesake: Battle of Chosin Reservoir
Class and type: Ticonderoga-class guided missile cruiser
Displacement: Approx. 9,600 long tons (9,800 t) full load
Length: 567 feet (173 m)
Beam: 55 feet (16.8 meters)
Draft: 34 feet (10.2 meters)
Propulsion:
4 × General Electric LM2500 gas turbine engines
2 × controllable-reversible pitch propellers
2 × rudders
Speed: 32.5 knots (60 km/h; 37.4 mph)
Complement: 30 officers and 300 enlisted
Sensors and
processing syst... 阅读全帖 |
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b********n
发帖数: 38600 | 17 Norma Rae, Martin Ritt, 1979 - Union Sign Scene
https://www.youtube.com/watch?v=X8ulYIVcCeY
40 Years Ago, Norma Rae Understood How Corporations Weaponized Race
The most enduring image of the film Norma Rae, which was released 40 years
ago, is surely Sally Field’s titular character silently standing on a table
, holding up a cardboard sign with the word union scrawled on it. One by one
, her fellow factory workers shut off their deafening textile machines in
solidarity. The climactic scene sugges... 阅读全帖 |
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发帖数: 1 | 18 To (All) the Colleges That Rejected Me
http://www.facebook.com/100PercentFEDUp/photos/489888364398667
If only I had a tiger mom or started a fake charity.
By SUZY LEE WEISS
SICK OF LOSING A JOB OR GAINING ACCEPTANCE TO ONE OF THE BEST COLLEGES OR
UNIVERSITIES IN AMERICA BECAUSE YOUR PROFILE ISN'T 'DIVERSE' ENOUGH???
This young lady is 100% correct. If you are a white middle-upper class
student with exceptional grades....take a number and wait at the back of the
line. By the way....it's gonna be ... 阅读全帖 |
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发帖数: 1 | 19 新舟700的供应商
螺旋桨： 英国Dowty Propellers
航电： 美国Rockwell Collins
供电系统： 法国Thales Group
刹车系统： 英国Meggitt
飞控系统： 美国Parker Hannifin
发动机：加拿大普惠PW150C涡桨发动机（ Pratt & Whitney Canada PW150C ）
。。。。。
分析下来，总算脱离了山寨俄毛的安东诺夫系列安-24的设计，改成山寨法意合制的ATR
-42/72的高大上了。
TNND, 这是自主产权的飞机吗？
这次起落架是谁提供的？ |
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发帖数: 1 | 20 新舟700的供应商
螺旋桨： 英国Dowty Propellers
航电： 美国Rockwell Collins
供电系统： 法国Thales Group
刹车系统： 英国Meggitt
飞控系统： 美国Parker Hannifin
发动机：加拿大普惠PW150C涡桨发动机（ Pratt & Whitney Canada PW150C ）
。。。。。
分析下来，总算脱离了山寨俄毛的安东诺夫系列安-24的设计，改成山寨法意合制的ATR
-42/72的高大上了。
TNND, 这是自主产权的飞机吗？
这次起落架是谁提供的？ |
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发帖数: 1 | 21 民科放屁，F6F和F4U都是2000马力，喷火Mk XIV 2050马力，Hawker飓风的后继型
Tempest Mk.V -- "This order was split, with the initial batch of 100 being
Tempest V "Series I"s, powered by the 2,235 hp (1,491 kW) Sabre IIA series
engine," 和 Tempest II －－ “All production aircraft were powered by a (2,
590 hp/1,932 kW) Centaurus V driving a 12 ft 9 inch (3.89 m) diameter Rotol
propeller” |
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发帖数: 1 | 22 民科还有一个特点就是只知其一，不知其二
暴风 （战斗机） 编辑
暴风（Tempest）是英国研制的一款战斗机。“暴风”本来是做为较“喷火”更先进的
战斗机而设计，在使用过程中发现爬升率和高空速度并不理想，尤其是在高速俯冲时空
气动力特性恶化，不容易从俯冲中改出，在使用过程中逐渐当成战斗轰炸机和地面攻击
机使用。
发信人: kg30 (), 信区: Military
标 题: Re: 二战最大的战斗机-p47
发信站: BBS 未名空间站 (Wed Oct 30 17:43:01 2019, 美东)
民科放屁，F6F和F4U都是2000马力，喷火Mk XIV 2050马力，Hawker飓风的后继型
Tempest Mk.V -- "This order was split, with the initial batch of 100 being
Tempest V "Series I"s, powered by the 2,235 hp (1,491 kW) Sabre IIA series
engine," 和 Tempest II －－ “All production aircra... 阅读全帖 |
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W*****B
发帖数: 4796 | 23 When China stumbles, the world economy will shudder
Napoleon famously observed that when China awoke from its long slumber the
world would shake.
Now that the Chinese economy has certainly awoken, were he alive today
Napoleon might have warned that when the Chinese economy stumbles the rest
of the world’s economy will also suffer. He might have done so particularly
because there are all too many reasons to believe that China will soon
begin a renewed and lengthy period of economic stagnation.
Ju... 阅读全帖 |
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B*******a
发帖数: 452 | 25 In wiki, TG's PLZ05, German PhZ2000, South Korean K9, South African G6-52 are all
listed as 155mm self-propelled howitzer with a 52 caliber barrel.
I feel German's PhZ-2000 may be the best. For its firing rate is too
impressive,
1)automatic support for MRSI (Multiple Rounds Simultaneous Impact) for up to
5 rounds.
2) in burst mode it can fire three rounds in 9 seconds, ten rounds in 56
seconds, and can fire between 10 and 13 rounds per minute. |
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O*******d
发帖数: 20343 | 26 You may google "thrust reversal"
http://en.wikipedia.org/wiki/Thrust_reversal
Thrust reversal, also called reverse thrust, is the temporary diversion of
an aircraft engine's exhaust or changing of propeller pitch so that the
thrust produced is directed forward, rather than aft. This acts against the
forward travel of the aircraft, providing deceleration. Thrust reversers are
used by many jet aircraft to help slow down just after touch-down, reducing
wear on the brakes and enabling shorter landin |
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a***r
发帖数: 594 | 27 for ballistic missile, it needs 7.9km/s to reach orbit.
according to wikipedia:
"boost phase: 3 to 5 minutes (shorter for a solid rocket than for a liquid-
propellant rocket); altitude at the end of this phase is typically 150 to
400 km depending on the trajectory chosen, typical burnout speed is 7 km/s.
reentry phase (starting at an altitude of 100 km): 2 minutes—impact is at a
speed of up to 4 km/s (for early ICBMs less than 1 km/s); see also
maneuverable reentry vehicle."
assume constant acce |
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v**e
发帖数: 8422 | 28 米鳖的这篇文章说明，TB在01年海南撞机事件中可能从米鳖的间谍机上收获颇丰
Anti-tamper technologies seek to keep critical military systems data in the
right hands
The stricken Navy EP-3 aircraft involved in the Hainan Island Incident
sustained serious damage to one of its four propellers, left aileron, and
nose-mounted radome, which was ripped completely off th
Posted by John Keller
Nine years ago, a U.S. Navy EP-3 reconnaissance aircraft made an
unauthorized emergency landing at a Chinese air base on Hainan Island in the
People's |
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k***d
发帖数: 113 | 29 AIM-9 Sidewinder Specification
Specifications
Primary Function Air-to-air missile
Contractor Naval Weapons Center
Power Plant Hercules and Bermite Mk 36 Mod 71, 8 solid-propellant rocket
motor
Thrust Classified
Speed Supersonic Mach 2.5
Range 10 to 18 miles depending on altitude
Length 9 feet, 5 inches (2.87 meters)
Diameter 5 inches (0.13 meters)
Finspan 2 feet, 3/4 inches (0.63 meters)
Warhead Annular blast fragmentation warhead
25 lbs high explosive for AIM-9H |
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o****o
发帖数: 8077 | 30 that makes sense
can they do that by alternating type of Pao Dan, so first a Rocket Propelled
Range Extended one, follow by a Di Pai Dan, then by a regular one, all
focusing on the 18KM max of Regular one? |
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s**d
发帖数: 18498 | 31 火箭增程弹精度比较低，威力又小。多炮同时开火也可以多发同时弹着。122炮是前沿战术部队的支援火炮，不必完成太大的任务，可以呼叫上级炮兵。
Propelled |
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v**e
发帖数: 8422 | 32 附上原文
Mystery Chinese SSK fuels Asia's submarine race
Jane's | Ted Parsons | Ted Parsons
By Ted Parsons
20 September 2010
The China Shipbuilding Industry Corporation has launched an unidentified new
-type conventional submarine (SSK) at its Wuhan shipyard, according to
Chinese reports.
It is the third new SSK design revealed by China since 1994 and is likely to
exacerbate regional anxieties that are propelling many Asian states to
increase or establish submarine fleets.
Vague or altered internet |
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w******n
发帖数: 13172 | 33 关于天波雷达：* OTH Radar - Has a range of 800 to 3000 km. The accuracy in
targetting is around 20 to 30 km. This can be improved to 2 to 3 km with
improved algorithm. OTH radar can work with the recon satellites to provide
more accurate targeting info.
http://www.informationdissemination.net/2009/03/plan-asbm-development.html
Saturday, March 28, 2009
PLAN ASBM development
I was contacted by Galrahn to read over a Chinese blog entry on PLAN's ASBM
development (found here) and post my thoughts on it.
I ... 阅读全帖 |
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m*********r
发帖数: 4692 | 34 wiki上是这么说的：
The rails and projectiles must be built from strong conductive materials; th
e rails need to survive the violence of an accelerating projectile, and heat
ing due to the large currents and friction involved. The recoil force exerte
d on the rails is equal and opposite to the force propelling the projectile.
The seat of the recoil force is still debated. The traditional equations pr
edict that the recoil force acts on the breech of the railgun. Another schoo
l of thought invokes Ampère... 阅读全帖 |
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r*****y
发帖数: 53800 | 35 按照美国陆军官版战史《朝鲜战争中的美国陆军》之《潮起潮落》的记载，TF Dog下辖
的步兵营只有一个，即7团3营，此外还有一个炮兵营及若干零散支援单位。《朝鲜，我
们第一次战败》以及日版《朝鲜战争》对于TF Dog的记载和ebb and flow完全一致，根
本没有什么5个步兵营。你说该信美国陆军的官版战史和亚历山大？还是你的记载“5.4
万美军死在南朝鲜”的clay？
《朝鲜战争中的美国陆军》之《潮起潮落》的记载：
http://www.kmike.com/EbbAndFlow/Ch7.htm
Because Smith believed the Chinese might offer their strongest resistance
along the winding road between Kot'o-ri. and Chinhung-ni, he wanted to move
the 1st Battalion, 1st Marines, north from Chinhungni to clear those ten
twisting miles ahead of th... 阅读全帖 |
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z*****1
发帖数: 130 | 36 LOS ANGELES (AFP) – A robotic, bat-winged bomber designed to take off from
a US aircraft carrier has passed its first test in a debut flight in
California, the US Navy said.
The X-47B jet, which looks like a smaller version of the B-2 stealth bomber,
stayed in the air for 29 minutes and climbed to 5,000 feet in a test flight
on Friday at Edwards Air Force Base, according to the Navy and defense
contractor Northrop Grumman.
Military leaders see the plane as part of a new generation of drones that... 阅读全帖 |
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s****i
发帖数: 2993 | 37 yoh was wrong, although the conclusion was right.
clockwise propeller would cause airflow hits left side of vertical
stabilizer and cause plane turning to left. to compensate the rudder needs
to be on right. |
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T*****n
发帖数: 274 | 38 你确定有CODLOG这种说法？23型肯定是CODLAG，gas turbine和柴油发电机
高速下是并车的。
参看一个文档 (出自converteam公司，他们为type 23提供DC electric motors
and DC propulsion converters）：
“A hybrid electrical/mechanical propulsion was designed. This employed
a low power DC propulsion motor, supplied via the ship’s diesel generators
, for slow speed quiet operations. This was complemented by gas turbines,
drivingthrough a reduction gearbox, for higher speed operations. This
system is known as CODLAG or Combined Diesel Electric and Gas Turbines... 阅读全帖 |
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v**e
发帖数: 8422 | 40 中国重型运载火箭技术方案
|字号
2010年10月，一个振奋人心的消息从北京传来。国家启动了重型运载火箭技术方案论证
其实我感兴趣的就是这一句而已。论证已经开始了，我们这代人有生之年肯定可以看到
我国载人登月和登陆小行星的壮观场面！
http://www.spacechina.com/xwzx_jcdt_Details.shtml?recno=74451
航天科技四院调动优势资源研制大推力固体运载发动机
日期：2011/04/01
中国航天科技集团公司四院的设计师们正在研讨固体发动机技术
3月是春风吹拂的季节。今年全国“两会”召开不久，一份“关于加快我国大型固
体运载火箭发动机研制步伐”议案的答复文件从北京传到位于西安的中国航天科技集团
公司四院，全国人大代表、该院42所研究员马国富去年向全国“两会”提交的议案得到
了回复。
答复函中，国防科工局表示，国家正在组织统筹论证大型固体火箭发动机技术未来
如何应用，并考虑将技术研究工作纳入我国航天“十二五”发展规划，力争突破核心关
键技术。国防科工局还表示，全力支持加快我国固体动力事业的发展。
对标一流 直面差距
固体动力是航天运载... 阅读全帖 |
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g**1
发帖数: 10330 | 41 http://www.taipeitimes.com/News/taiwan/archives/2012/01/10/2003
MND confirms Chinese missile tests
EVIDENCE?Chinese state media have reported that a fisherman in Shandong had
accidentally retrieved wreckage from what may have been a missile booster
By J. Michael Cole / Staff Reporter
The Ministry of National Defense confirmed yesterday that China had test-
fired Julang-2 (JL-2) -submarine-launched ballistic missiles (SLBM) before
the New Year.
Chinese military bulletin boards recently lit up w... 阅读全帖 |
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O**l
发帖数: 12923 | 42
孤陋寡闻了吧 哈哈
==================
Last week we showed you this photo I took of a mysterious missile that
Boeing had on display at the Surface Navy Association’s annual
convention just outside of DC.
I had never seen, or heard of, this missile before and no one at
Boeing’s booth could talk about the weapon. Well, a spokeswoman with
Boeing’s Phantom Works division just emailed me to explain that the
Joint Air-Breathing Multi-Role Missile (JABMM) is being designed for use
by the Navy’s Littoral Combat ... 阅读全帖 |
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s*********0
发帖数: 2045 | 43 Air Force's U-2 aircraft get new lease on life
The draft of the federal budget for 2013 takes an ax to the rival Global
Hawk program. An Air Force general says the U-2, a design that dates to the
1950s, is "the stronger system."
Read more: http://news.cnet.com/8301-11386_3-57382692-76/air-forces-u-2-aircraft-get-new-lease-on-life/
Score one for old-school aircraft against the upstart drones.
Perhaps it's just a brief respite from the seemingly inevitable winds of
change propelling unmanned aircr... 阅读全帖 |
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g**1
发帖数: 10330 | 44 http://www.prnewswire.com/news-releases/us-navy-launches-two-ra
US Navy launches two Raytheon-made SM-3 missiles against single ballistic
missile target
Scenario designed to test ship's ability to launch SM-3s
PACIFIC MISSILE RANGE FACILITY, KAUAI, Hawaii, Sept. 18, 2013
In a Missile Defense Agency test, the U.S. Navy launched two Raytheon
Company (NYSE: RTN)-made Standard Missile-3 Block IBs from the USS Lake Erie
against a complex, separating short-range ballistic missile target. The
first gui... 阅读全帖 |
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z******3
发帖数: 860 | 45 http://en.wikipedia.org/wiki/BrahMos
Type Supersonic cruise missile
Place of origin India
Russia
Service history
In service November 2006–present
Used by Indian Army
Indian Navy
Indian Airforce (awaiting)
Production history
Manufacturer DRDO
NPO Mashinostroeyenia
Unit cost US$ 2.73 million
Variants Surface-launched
Submarine-launched
Air-launched
BrahMos-II
Specifications
Weight 3,000 kg
2,500 kg (air-launched)
Length 8.4 m
Diameter 0.6 m
Warhead 200-300 kg conv... 阅读全帖 |
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s******8
发帖数: 7105 | 46 如果这1327辆（坦克）包括装甲车，这是完全可能的
北朝鲜在开战前拥有
242 tanks
176 Self-propelled guns
54 Armored vehicles
总数为 472 |
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k*****r
发帖数: 21039 | 47 二战时代的步枪用发射药燃速太慢，所以需要长枪管才能发挥最大能量。
AK这样的枪弹的发射么燃速快多了，所以短枪管也能达到和6.5x50一样的初速。
重新开38式步枪生产线，用22寸管子，reload with hotter propellant, 应该是把不
错的打鹿枪。 |
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k*****r
发帖数: 21039 | 48 二战时代的步枪用发射药燃速太慢，所以需要长枪管才能发挥最大能量。
AK这样的枪弹的发射么燃速快多了，所以短枪管也能达到和6.5x50一样的初速。
重新开38式步枪生产线，用22寸管子，reload with hotter propellant, 应该是把不
错的打鹿枪。 |
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x****u
发帖数: 12955 | 49
SB you couldn't understand what "各型飞机3 000余架" means? You probably
think transports, trainer, bomber, propeller driven fighters should all
count as jet fighters. |
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x****u
发帖数: 12955 | 50
SB you couldn't understand what "各型飞机3 000余架" means? You probably
think transports, trainer, bomber, propeller driven fighters should all
count as jet fighters. |
|
