Topic: Hypersonic Aircraft
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What are the common oswald efficiency factors for hypersonic airc...
The Oswald efficiency is defined for the cases where the overall coefficient of drag of the wing or airplane has a constant+quadratic dependence on the aircraft lift coefficient C_D = C_{D_0} + \frac{(C_L)^2}{\pi e AR} where C_D\; is the ov... Read More »
Source: http://answers.yahoo.com/question/index?qid=20100712102843AAf2h40
Which is the world's 1st hypersonic aircraft?
Since the 1970s, the term hypersonic has generally been assumed to refer to speeds of Mach 5 (5 times the speed of sound) and above. The hypersonic regime is a subset of the supersonic regime. The precise Mach number at which a craft can be... Read More »
Source: http://answers.yahoo.com/question/index?qid=20100302062746AAq8Yu2
Who believes that the sr-71 blackbird has been replaced by a hype...
Aurora was the project name for what became the B-2. Lockheed had a similar, but smaller bomber competing against the Northrop/Grumman B-2. Have Blue was the name for the future F-117. In the early 90's they're were strange sausage shaped e... Read More »
Source: http://answers.yahoo.com/question/index?qid=20080725172602AAVLuSq
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Hypersonic Aircraft
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Answers to Other Common Questions
X-15. The rocket powered motors were ignited at high altitude and reached an incredible speed of 6,500 kmph. That means 4,062 miles per hour, almost unimaginable at that time.
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Source: http://www.funtrivia.com/en/subtopics/History-of-Space-Flights-11...
