Engineering, 17.12.2020 17:10 ramondoss249
A pitot tube, mounted on an airplane flying at 8000 m standard altitude, reads a stagnation pressure of 52.2 kPa. Estimate (a) the velocity in mi/h and (b) the Mach number.
Answers: 1
= Stagnation pressure = 52.2 kPa
= Atmospheric pressure at 8000 m = 35.581 kPa (from chart)
= Velocity of sound at 8000 m = 308 m/s![\dfrac{p_0}{p}=(1+0.2M^2)^{3.5}\\\Rightarrow M=\sqrt{\dfrac{1}{0.2}[(\dfrac{p_0}{p})^{\frac{1}{3.5}}-1]}\\\Rightarrow M=\sqrt{\dfrac{1}{0.2}[(\dfrac{52.2}{35.581})^{\frac{1}{3.5}}-1]}\\\Rightarrow M=0.761](/tpl/images/0995/1322/d356c.png)
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A pitot tube, mounted on an airplane flying at 8000 m standard altitude, reads a stagnation pressure...
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