Highway 发表于 2013-5-23 08:07, A6 k8 `& v5 h, d" L2 [0 K
补充一则消息，是关于F-35的“好消息”。
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量产的F-35进行垂直起降 Production F-35B performs first verti ...
Highway 发表于 2013-5-23 08:07
补充一则消息，是关于F-35的“好消息”。
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量产的F-35进行垂直起降 Production F-35B performs first verti ...
TopGun 发表于 2013-5-23 08:30
建议美国海军和海军陆战队飞行员使用美国陆军M1坦克成员的液冷背心。在地面和低空时启动液冷，在高空时关闭 ...
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9 y5 [* o; @6 k2 I1 I' l8 |TopGun 发表于 2013-5-23 22:30
建议美国海军和海军陆战队飞行员使用美国陆军M1坦克成员的液冷背心。在地面和低空时启动液冷，在高空时关闭 ...
晨枫 发表于 2013-5-23 22:46
STOVL飞机都可以垂直起飞的，只是垂直起飞时载荷基本没用，所以不宣传这一点。 ...
MacArthur 发表于 2013-5-23 23:20
这些问题恐怕都不是F-35所独有的吧？把“F-35”换成随便哪一个隐身第四代，都应该大体成立。。。
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现代战 ...
龙战 发表于 2013-5-23 10:55
你说的这位飞行员不是中国的吧？- g; N7 m: g' |; h# s! j7 L9 b
现在国内的法律顶多给生两胎。
龙战 发表于 2013-5-23 10:03
晨大，关于F35遭遇到的散热问题，咱们的黑丝也同样会遭遇吧？
MacArthur 发表于 2013-5-23 09:20
这些问题恐怕都不是F-35所独有的吧？把“F-35”换成随便哪一个隐身第四代，都应该大体成立。。。
现代战 ...
nj_power 发表于 2013-5-23 17:12
晨老大，F22难道没这些问题？
晨枫 发表于 2013-5-24 07:21
没有见到相关报导。IPP是F-35第一个用，所以F-22不会有这个问题。散热问题不知道F-22是怎么解决的，不过F ...
TopGun 发表于 2013-5-24 00:37
Mirage pilot. Wing Commander.
晨枫 发表于 2013-5-23 22:46
STOVL飞机都可以垂直起飞的，只是垂直起飞时载荷基本没用，所以不宣传这一点。 ...
因为一般来说，电传操纵的主舵面都是电液伺服的，不过战斗机的舵面没有客机那么大，所以能实现电动也不一定，不知晨大有啥资料分享一下。。
TopGun 发表于 2013-5-23 22:30
建议美国海军和海军陆战队飞行员使用美国陆军M1坦克成员的液冷背心。在地面和低空时启动液冷，在高空时关闭 ...
xlan1976 发表于 2013-5-23 22:01
又见晨大好文7 f' r1 D; M% l! \6 m. z; G
不过俺有个小小的疑问，F35 的舵面是纯电动的吗因为一般来说，电传操纵的主舵 ...
xlan1976 发表于 2013-5-23 23:03
嗯，好像客机飞行员也是生闺女的多呢。。跟他们聊天，好像他们普遍认为是老在雷达工作环境里呆着的原因。 ...
龙战 发表于 2013-5-23 21:00
原来是一个法国佬啊！！
Highway 发表于 2013-5-24 00:16
别说现代战斗机了，现在的汽车都这德行。
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我的车前两天Engine check light亮了，Dealer的技术人员也没谱 ...
梓童 发表于 2013-5-26 10:50
也只有晨大经常扒一扒美帝的画皮，其他所谓“砖家”对美帝都是一片敬畏之声！
不过我有个疑问：反正发动机 ...
魔术师 发表于 2013-5-26 01:43
气流那么高的速度，不仅散不了热，恐怕还会生热吧？
梓童 发表于 2013-5-25 20:50
也只有晨大经常扒一扒美帝的画皮，其他所谓“砖家”对美帝都是一片敬畏之声！: Q! Z: C3 U, ?1 z. ~3 M& }2 K
不过我有个疑问：反正发动机 ...
xlan1976 发表于 2013-5-23 22:03
嗯，好像客机飞行员也是生闺女的多呢。。跟他们聊天，好像他们普遍认为是老在雷达工作环境里呆着的原因。 ...
梓童 发表于 2013-5-26 10:50
也只有晨大经常扒一扒美帝的画皮，其他所谓“砖家”对美帝都是一片敬畏之声！
不过我有个疑问：反正发动机 ...
小木 发表于 2013-5-28 01:18
雷达什么的都是电磁辐射，除非到了微波炉里头那功率密度，应该是没啥问题的。6 Q- O4 {1 @+ M! m* U0 K4 V! t
但是飞客机，是要长时间在 ...
xlan1976 发表于 2013-5-28 01:35
类似的做法早就有了，不过最常见的是从压气机处引气，直接从进气道引气的也有，但不常见而且主要是低速飞 ...
晨枫 发表于 2013-5-27 00:14
发动机进气的设计很考究，和发动机的工作要精密匹配，不能随便分流的。 ...
xlan1976 发表于 2013-5-27 11:35
类似的做法早就有了，不过最常见的是从压气机处引气，直接从进气道引气的也有，但不常见而且主要是低速飞 ...
Chinese hackers compromise U.S. missile systems, jets, ships: report
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Among the weapons listed in the report were the advanced Patriot missile system, the Navy’s Aegis ballistic missile defense systems, the F/A-18 fighter jet, the V-22 Osprey, the Black Hawk helicopter and the F-35 Joint Strike Fighter.
The report did not specify the extent or time of the cyber-thefts or indicate if they involved computer networks of the U.S. government, contractors or subcontractors.
But the espionage would give China knowledge that could be exploited in a conflict, such as knocking out communications and corrupting data, the Post said. It also could speed Beijing’s development of Chinese defense technology.
In a report to Congress earlier this month, the Pentagon said China was using espionage to modernize its military and that its hacking was a serious concern. It said the U.S. government had been the target of hacking that appeared to be “attributable directly to the Chinese government and military.” China dismissed the report as groundless.
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China has dismissed as groundless both the Pentagon report and a February report by the U.S. computer security company Mandiant, which said a secretive Chinese military unit was probably behind a series of hacking attacks targeting the United States that had stolen data from 100 companies.
AUSTRALIAN SPY HQ PLANS STOLEN4 C" u( B! u3 } P" j9 y% W2 t9 m
In Australia, a news report said hackers linked to China stole the floorplans of a A$630 million headquarters for the Australia Security Intelligence Organisation, the country’s domestic spy agency.% q$ u/ y) k' w
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The attack through the computers of a construction contractor exposed not only building layouts, but also the location of communication and computer networks.! A: | c9 G/ }1 Y# S* P3 r
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Australia security analyst Des Ball told the ABC in the report that such information made the yet to be completed spy headquarters vulnerable to future cyber attacks.9 n! O0 L. D4 r! s- {9 |* D; g
“You can start constructing your own wiring diagrams, where the linkages are through telephone connections, through wi-fi connections, which rooms are likely to be the ones that are used for sensitive conversations, how to surreptitiously put devices into the walls of those rooms,” said Ball.
The building is designed to be part of a global electronic intelligence gathering network which includes the United States and the UK, but its construction has been plagued by delays and cost blowouts, with some builders blaming late design changes on cyber attacks.. \% f5 }$ ~9 ^. e
The ABC report said the Chinese hacking was part of a growing wave of cyber attacks against business and military targets in the close U.S. ally./ P, C9 x/ I: O& ~+ w3 A
It said the hackers also stole confidential information from the Department of Foreign Affairs and Trade, which houses the overseas spy agency the Australian Secret Intelligence Service and had targeted local companies, including steel-manufacturer Bluescope Steel, and military and civilian communications manufacturer Codan Ltd.5 ] l* D6 b* P$ l$ E
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The influential Greens party said the hacking was a “security blunder of epic proportions” and called for an inquiry, but the government refused to confirm the breach.# { B( N& n. L# Y
Prime Minister Julia Gillard said the reports were “inaccurate”, but declined to say how.
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Australian officials, like those in the United States and other Western nations, have made cyber attacks a security priority following a growing number of attacks of the resource rich country, mostly blamed on China.6 f% w, d [$ i3 ?* s9 x. {, I
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Despite being one of Beijing’s major trade partners, the country is seen by China as the southern fulcrum of the U.S. military pivot to the Asia-Pacific and in 2011 agreed to host thousands of U.S. Marines in near-permanent rotation.! X$ A& ^% e% p& L
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Australia is a major buyer for U.S. weapons systems and is one of the largest overseas customers for the Lockheed Martin manufactured F-35, as well as for Boeing’s F/A-18 Super Hornet and associated weapons systems.
Chinese telecommunications giant Huawei was last year barred from bidding for construction contracts on a new Australian high-speed broadband network amid fears of cyber espionage.
The Reserve Bank of Australia said in March that it had been targeted by cyber attacks, but no data had been lost or systems compromised amid reports the hackers had tried to access intelligence on Group of 20 wealthy nations negotiations.
水狸 发表于 2013-5-28 10:10
钱不够用了， 工期太紧了，于是新借口出来了
水狸 发表于 2013-5-28 11:10
钱不够用了， 工期太紧了，于是新借口出来了
晨枫 发表于 2013-5-28 23:25
"实际上在超音速飞行时，发动机的推力大部分在进气道产生"& d# `9 U0 t/ \) y5 S! `7 A* Q
哈哈，对于这一点，还特别不好解释，想听听你 ...
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实际上嘛，是为了给大家建立一个概念：推力是在发动机上那些对气体做功，使之向后流动的部件上产生的，那个部件对气体做功更多，那个部件产生的推力就大。这个超音速也好，亚音速也好，都是一样的，而亚音速下的分析更好理解一些。6 L" h# r: |2 h4 m0 T5 b- B
xlan1976 发表于 2013-5-30 04:22
嘎嘎，晨大给俺出题目了
这个嘛，的确很多书上这样说，包括俺以前的发动机教材。。不过教材里说完 ...
xlan1976 发表于 2013-5-30 05:22
嘎嘎，晨大给俺出题目了: Q) i6 U- D5 e$ o# r
这个嘛，的确很多书上这样说，包括俺以前的发动机教材。。不过教材里说完 ...
TopGun 发表于 2013-5-30 09:27
亚音速时主要在风扇到涡轮前产生推力。那么偏转喷口产生的矢量推力是多少？这个矢量推力的产生原理又是什 ...
晨枫 发表于 2013-5-30 21:21
多谢解释了。我的理解就简单多了。压气机是增压的，这肯定是发动机出力的一部分。超音速时进气道把进气从 ...
: I" K( X3 H3 tTopGun 发表于 2013-5-31 08:07
我想了一下，下面是我的看法：
虽然动力系统从进气口到喷管各个环节都产生推力或阻力，但喷管收缩段之前 ...
# ~ w9 G% k, Q0 GTopGun 发表于 2013-5-30 08:27
亚音速时主要在风扇到涡轮前产生推力。那么偏转喷口产生的矢量推力是多少？这个矢量推力的产生原理又是什 ...
TopGun 发表于 2013-5-30 18:07
我想了一下，下面是我的看法：- v" p$ m- o }6 _: t
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虽然动力系统从进气口到喷管各个环节都产生推力或阻力，但喷管收缩段之前 ...
xlan1976 发表于 2013-5-30 19:30
嘿嘿，老兄自问自答了，省我事儿了. w' x- O4 T8 c: h4 Q5 y; e% A
这个问题我也想了一下，因为我上学的时候矢量喷管对于我们而言 ...
xlan1976 发表于 2013-5-24 12:01
又见晨大好文' O i; y+ u/ w/ r
不过俺有个小小的疑问，F35 的舵面是纯电动的吗因为一般来说，电传操纵的主舵 ...
groovy26 发表于 2013-5-31 10:52
787马上要来了的说…
晨枫 发表于 2013-5-31 09:52
涡扇发动机的推力公式：
F=（m ̇_核心发动机+m ̇_燃油 ）×V_核心发动机+m ̇_风扇 V_风扇-m ̇_进气 ...
xlan1976 发表于 2013-6-1 09:14
不要提这个噩耗
xlan1976 发表于 2013-5-30 18:22
嘎嘎，晨大给俺出题目了
这个嘛，的确很多书上这样说，包括俺以前的发动机教材。。不过教材里说完 ...
怎这样呢 发表于 2013-6-1 15:29
有一点不太明白的地方，正常情况下发动机是依靠燃气产生的向后的推力驱动涡轮从而带动旋转，加力状态下， ...
feathers 发表于 2013-6-2 07:06
洛克希德在历史诗一贯走上层路线，对空军的公关做得超好，产品并不怎么样。不论是P38、F104、F117都不皮实 ...
xlan1976 发表于 2013-5-28 01:48
呵呵，只是在聊天时那么一说而已，不必当真。。& ^5 L9 S, t) ^. x0 T( D7 H$ k9 H
不过飞机的雷达特别是客机的气象雷达，功率还是很高的。 ...
一身轻松 发表于 2013-6-2 22:09
空军某导弹部队，连续6年出生都是女儿，但长得都很漂亮
所以完全没影响也不可能 ...
所以我也不知道到底有啥影响。。xlan1976 发表于 2013-6-2 22:18
我们机务是一茬一茬的，我之前的前辈基本都是女儿，然后从比我大几岁的开始，连着10年好像都是儿子。。{: ...
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