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The Lockheed SR-71 Blackbird aircraft cruises at Mach number of 3.3 at an altitude of 85,000...

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Mechanical Engineering

The Lockheed SR-71 Blackbird aircraft cruises at Mach number of3.3 at an altitude of 85,000 ft. Calculate the speed of sound andflight speed at these conditions. Compare the flight speed to themuzzle speed of a 30-06 rifle bullet (700 m/s).

Answer & Explanation Solved by verified expert
4.0 Ratings (716 Votes)
As there is no direct relation between velocity of flight withan altitude So first we need to derive it with few assumptionLetp pressure lbft2T absolute temperature EF 4597v specific volume ft3lbw specific weight lbft3 1vR a constant for air R 533p density wg 1gv v 1gDFrom    See Answer
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