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# HW22 - 80 degrees Compare to the static pressure ratio for...

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AAE 334 Fall 2011, Homework 22 Due Friday, November 4 at the beginning of class. In lecture and Chapter 9 we are learning that the static thermodynamics through a steady oblique shock are the same formulae as for the steady normal shock if we use the upstream normal Mach number in place of the upstream Mach number. It turns out that this is also the case for the ratio of stagnation pressures (but not the 1 2 / p p o column in the tables!) “Shock angle” and “wave angle” are synonyms. “Mach angle” is different. Use formulas from the text to solve these problems: 1. Find the static pressure ratio for an oblique shock in a Mach 2.5 flow with shock angle of 40 degrees. Compare to the static pressure ratio for a normal shock in a Mach 2.5. 2. Find the static pressure ratio for an oblique shock in a Mach 2.5 flow with shock angle of
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Unformatted text preview: 80 degrees. Compare to the static pressure ratio for a normal shock in a Mach 2.5. 3. Find the static temperature ratio for an oblique shock in a Mach 1.8 flow and shock angle of 40 degrees. Compare to the static temperature ratio for a Mach 1.8 normal shock. Use normal shock tables to solve these problems: 4. Find the static pressure ratio for an oblique shock in a Mach 2.5 flow with shock angle of 60 degrees. Compare to the static pressure ratio for a normal shock in a Mach 2.5. 5. Find the static temperature ratio across an oblique shock with pressure ratio of 5 and shock angle of 47 degrees. 6. Find the static temperature ratio across a normal shock with pressure ratio of 5....
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