The Concorde supersonic transport flew at M = 2.2 at 20 km altitude. Air is decelerated isentropically by the engine inlet system to a local Mach number of 1.3. The air passed through a normal shock and was decelerated further to M = 0.4 at the engine compressor section. Assume, as a first approximation, that this subsonic diffusion process was isentropic and use standard atmosphere data for free-stream conditions. Determine the temperature, pressure, and stagnation pressure of the air entering the engine compressor.
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