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Unformatted text preview: The subsonic leg occurs right at choking onset. The supersonic leg occurs if p B < p (no shock inside duct). 5. Why do the waves reect back into the jet rather than escaping? (1 student) The waves cannot propagate outside the jet because we have assumed the ow outside the jet is still ( M = 0), or at least subsonic ( M < 1). Stationary shocks or waves are possible only if M 1. However, the waves in the exhaust jet of a supersonic aircraft will indeed undergo only a partial reection, with part of each wave excaping from the jet into the surrounding supersonic ow. We havent looked at this more complicated case. 6. No mud (6 students)...
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- Fall '05