HW17 - 3. The hole is repaired and a supersonic wind tunnel...

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AAE 334, Fall 2011, Homework 17 Due Monday, October 24, at the beginning of class. 1. How fast must air at 70 Fahrenheit and 14.7 psi static pressure move for Bernoulli’s equation to give a 10% error in total pressure? A supply tank for a supersonic wind tunnel holds air at temperature of 20 Celcius and 10 atmospheres pressure. 2. A small hole in the tank exhausts air at sonic speed. What is the temperature, pressure, density, and enthalpy of the air if this is an isentropic process?
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Unformatted text preview: 3. The hole is repaired and a supersonic wind tunnel is plumped to the tank. a. At what Mach number must the wind tunnel operate for the pressure in the test section to be one quarter of the supply pressure? b. At what Mach number must the wind tunnel operate for the temperature in the test section to be one quarter of the supply temperature? c. At what Mach number must the wind tunnel operate for the density in the test section to be one quarter of the supply density?...
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This note was uploaded on 02/21/2012 for the course AAE 334 taught by Professor Collicott during the Fall '09 term at Purdue University-West Lafayette.

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