In a helium wind tunnel flow at mach 40 passes over a wedge, Ask an Expert

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In a helium wind tunnel, flow at Mach 4.0 passes over a wedge of unknown half-angle aligned symmetrically with the flow. An oblique shock is observed attached to the wedge, making an angle of 300 with the flow direction. Determine the half-angle of the wedge and the ratios of stagnation pressure and stagnation temperature across the wave.

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