A P - 51 Musta ng (WWII plane) is tested in the large wind tunnel at...

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Mechanical Engineering

A P - 51 Musta ng (WWII plane) is tested in the large windtunnel at NASA Ames. The plane has a pitot - static probe systemmounted. We want to test the P - 51 at a flight speed of 160 mphand altitude of 40,000 ft. T he wind tunnelâ€™s test section has across - sectional area of 5000 ft 2 and a reservoir area of 100,000ft 2 .
What pressure is needed in the reservoir to drive thisflow?
a. Does Bernoulliâ€™s equation apply here? i. Hint: Whatflow condition is required for Bernoulliâ€™s equation?
b. If 1 60 mph is the true airspeed, what is the staticand stagnation pressure? i. Hint: You are given the flight altitudeas 40,000 ft.
c. W h at reservoir pressure is needed to achieve thistest section velocity and pressure?

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3.8 Ratings (492 Votes)

Bernoulli equation requires the condition that the density isinvariant along stream line Here in this case the plane velocityis less than 03 Mach See Answer

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