密银 发表于 2020-6-3 23:25
SABRE的工作原理好复杂啊，这可靠性不好搞定啊。工程师的头发又要到掉光了。 ...
晨枫 发表于 2020-6-4 09:374 y( [$ U+ u9 h& o
水平起飞、单级入轨、水平着陆，这挑战巨大啊，不复杂不行啊。
李根 发表于 2020-6-4 08:55/ F8 A# {* R Z4 \/ u
谁说要水平着陆了？
晨枫 发表于 2020-6-4 09:56
那还降落伞着陆？
李根 发表于 2020-6-4 09:06
不能用那个充气垫着陆吗
liuqing098 发表于 2020-6-4 09:34
在观网上看了，题目不一样，内容一样。真棒！
togo 发表于 2020-6-4 15:565 S6 a. ]/ q! ^+ v
这个就是所谓的钱学森弹道吗
赫然 发表于 2020-6-4 15:092 a5 |+ Z, _. q
有人在微信上说：
晨枫 发表于 2020-6-5 00:25
把射程增程部份修改了一下，我的原文把空气和氧气混为一谈了，用纯氧这算，理论增程只有3.5倍，不可能达 ...
liuqing098 发表于 2020-6-4 18:268 I9 a b0 i7 Q( E
哈哈。我还是文科生，对里面数字不敏感啊
猫元帅 发表于 2020-6-5 04:24
600秒能飞多远啊？能在法国投降前飞抵陛下最爱的帕瑞斯吗？
飞这么快。是不是沿途多少米之内的鸟儿都会被 ...
柏林墙 发表于 2020-6-6 09:20
观网看见时候就想讨论，HGV热特征可不小啊，跟中短程弹道导弹没有数量级差别
卫星能发现也能跟踪
就是老毛 ...
柏林墙 发表于 2020-6-6 08:20$ F) G. s8 V; p# A& i/ M) a
观网看见时候就想讨论，HGV热特征可不小啊，跟中短程弹道导弹没有数量级差别
卫星能发现也能跟踪$ l" R, Z9 e! y$ P
就是老毛 ...
晨枫 发表于 2020-6-6 23:24
米格31还拦截过SR71？有链接吗？感觉米格31出来的时候，SR71已经不对苏联进行侦察了 ...
Even if no SR-71 was lost due to hostile actions during the entire Blackbird career, the Mach 3+ capable spyplane faced an adversary that could effectively intercept it: the MiG-31 Foxhound.
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The SR-71 impressive mission record was reached thanks to some unique features of its airframe, such as its ability to fly at more than three and a half times the speed of sound at 88,000 feet, its small (for the time) Radar Cross Section (RCS) and its sophisticated electronic countermeasures (ECM).
These flight characteristics made the Blackbird safe against any attempt of interception conducted by enemy fighters or surface-to-air missiles (SAM), during its reconnaissance missions in the Russian skies during the Cold War years.$ a5 \8 P. Z! s3 B0 Q- E
The only aircraft which possessed the capabilities to shoot down an SR-71 was the F-14 Tomcat, that could use its AIM-54 Phoenix long range missile against the fast black plane.
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In fact the Phoenix was developed to shoot down Soviet cruise missiles which flew at an altitude similar to the one reached by the Blackbird. Moreover with a speed between Mach 4 and Mach 5, the AIM-54 was fast enough to cause serious problems to the SR-71.
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But, the capabilities featured by the Tomcat and its long range missiles, weren’t matched by any Russian interceptor, and to stop SR-71s’ overflights, the Soviets developed an aircraft which had similar characteristics to those owned by the F-14.
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As we have recently explained, the only aircraft that had a speed close to the one of the SR-71 was the MiG-25. But even if it could fly at Mach 3.2, the Foxbat wasn’t able to sustain such speeds long enough to reach the Blackbird.* N+ Y; [4 E! M0 |) ?. y3 i
Another serious problem which affected the Foxbat was the lack of effectiveness of its R-40 missiles (AA-6 Acrid based on NATO designation) against an air-to-air target smaller than a large strategic bomber.
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These deficiencies were settled when a more advanced MiG-25 development, the MiG-31, entered in service in the 1980s: the Foxhound was armed with a missile very similar to the US AIM-54 Phoenix, the R-33 (AA-9 Amos as reported by NATO designation).. E* T9 M4 Y5 j' V5 v5 l5 [& q
This weapon was ideal not only for shooting down the American bombers, but also to intercept and destroy fast reconnaissance aircraft, such as the SR-71.
This statement was dramatically confirmed in Paul Crickmore’s book Lockheed Blackbird: Beyond The Secret Missions.$ `5 u: |+ r' T! t U6 ~% }
In this book one of the first Foxhound pilots, Captain Mikhail Myagkiy, who had been scrambled with its MiG-31 several times to intercept the US super-fast spy plane, explains how he was able to lock on a Blackbird on Jan. 31, 1986:# P9 H; Z0 l# a5 M0 O4 g9 |& ~5 {0 B
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“The scheme for intercepting the SR-71 was computed down to the last second, and the MiGs had to launch exactly 16 minutes after the initial alert. (…) They alerted us for an intercept at 11.00. They sounded the alarm with a shrill bell and then confirmed it with a loudspeaker. The appearance of an SR-71 was always accompanied by nervousness. Everyone began to talk in frenzied voices, to scurry about, and react to the situation with excessive emotion.”: E! ^. g& K: y0 n' a. B
Myagkiy and its Weapons System Officer (WSO) were able to achieve a SR-71 lock on at 52,000 feet and at a distance of 120 Km from the target.
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The Foxhound climbed at 65,676 feet where the crew had the Blackbird in sight and according to Myagkiy:
“Had the spy plane violated Soviet airspace, a live missile launch would have been carried out. There was no practically chance the aircraft could avoid an R-33 missile.”
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After this interception Blackbirds reportedly began to fly their reconnaissance missions from outside the borders of the Soviet Union.+ p, X5 Q' L# n" k$ i" R
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But the MiG-31s intercepted the SR-71 at least another time.9 V A. ]5 C" S
On Sept. 3, 2012 an article written by Rakesh Krishman Simha for Indrus.in explains how the Foxhound was able to stop Blackbirds spy missions over Soviet Union on Jun. 3, 1986.$ _3 l$ V+ G5 b/ m
That day, no less than six MiG-31s “intercepted” an SR-71 over the Barents Sea by performing a coordinated interception that subjected the Blackbird to a possible all angle air-to-air missiles attack.5 ]0 ]) U4 `$ }
Apparently, after this interception, no SR-71 flew a reconnaissance missions over the Soviet Union and few years later the Blackbird was retired to be replaced with the satellites.
无言 发表于 2020-6-6 10:27( t$ Z; Q" T* ^, W4 K
https://theaviationist.com/2013/12/11/sr-71-vs-mig-31/
colin1992 发表于 2020-9-23 07:161 B! Q# m; ?: O8 P: i% i- p* F7 C
今天看到宋心之的一个视频，谈到美国格鲁曼的最新实验进展，可以达到超燃冲压发动机稳定运行30分钟 ...
晨枫 发表于 2020-9-23 21:36 b) ]" Y9 O' A1 m" f. h. t$ N
不知道他哪里来的消息，没有看到过公开报导
……
晨枫 发表于 2020-9-23 21:36- W7 D( R' F6 C/ M
不知道他哪里来的消息，没有看到过公开报导
……
猫元帅 发表于 2020-6-5 05:24
600秒能飞多远啊？能在法国投降前飞抵陛下最爱的帕瑞斯吗？
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飞这么快。是不是沿途多少米之内的鸟儿都会被 ...
$ J5 G, u1 u7 D; H& k雨楼 发表于 2020-9-24 19:364 p1 |( w7 d6 d
马赫1是一倍声速，大约1250km/h。10分钟大约125km要是m10， 就是10倍声速～～
雨楼 发表于 2020-9-24 19:36
马赫1是一倍声速，大约1250km/h。10分钟大约125km要是m10， 就是10倍声速～～
colin1992 发表于 2020-9-24 04:239 a" [$ a" v; G
英文链接
https://www.thedrive.com/the-war-zone/29307/air-force-reveals-tests-of-supposed-record-s ...
晨枫 发表于 2020-9-24 08:46
所以嘛，9个月里累计30分钟，不是一次连续30分钟，差别大了
雨楼 发表于 2020-9-24 12:024 X/ c `0 |0 P3 y2 R }2 y( z
对了，前两天国内媒体报导兔子要在2025年实现全球一小时到达的运输方式。这可不是东风快递使命必达那个要 ...
晨枫 发表于 2020-9-24 13:57
那应该是兔版航天飞机，还是用火箭打上去了。估计不会像航天飞机那样弄得那么大。有可能与前几天的“可重 ...
陈比尔 发表于 2020-9-24 17:549 @% j5 n( z. M4 R( M# s7 R+ }
如果说中国离HCM还差临门一脚，那离航发还差几脚？
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