BID
发表于 2025-3-21 16:48:51
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syncope
发表于 2025-3-21 21:03:27
Book 2012cepts and actual flying vehicles that have been devised over the last hundred years. He recounts the history of rocket airplanes, from the early pioneers who attached simple rockets onto their wooden glider airplanes to the modern world of high-tech research vehicles. The author visits museums where
黄油没有
发表于 2025-3-22 01:58:27
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charisma
发表于 2025-3-22 07:58:29
Breaking the barrier,, high performance military airplanes were running into similar difficulties. For these fast, propeller-driven fighters the airflow over the wings could achieve Mach 1 in a dive, making air compressibility a real rather than a theoretical issue.
Antioxidant
发表于 2025-3-22 12:34:53
Non-German wartime rocket fighters,of military value. Uniquely, the Japanese created a rocket vehicle that was actually intended . to be safe: a manned suicide missile. The pilots of some of the planned German rocket planes would have had little chance of surviving a mission but at least they were not specifically required to die.
协迫
发表于 2025-3-22 15:58:38
Man versus robot,on from the ground rather than directly by a human pilot, particularly as hypersonic vehicles tend to be aerodynamically unstable and therefore require sophisticated avionics for efficient and safe control. For instance, Skylon is to fly automatically; any astronauts to be transported into orbit will be housed inside its payload bay.
Grandstand
发表于 2025-3-22 17:51:50
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昏暗
发表于 2025-3-22 22:06:14
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过份
发表于 2025-3-23 03:07:01
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公共汽车
发表于 2025-3-23 07:26:03
The rise and fall of the rocket interceptor,wever, shortly after Germany‘s surrender the former Allies suddenly found themselves in the jet age, as well as kicking off a conflict between the US and Western Europe on the one hand and the Soviet Union and Eastern Europe on the other. It was clear that any new air war would be fought by planes e