Isentropic stagnation pressure

Calculates Mach number as the ratio of flow velocity to speed of sound.

Calculates stagnation temperature for an isentropic ideal-gas model.

Calculates critical throat-to-stagnation pressure ratio for an ideal gas.

Calculates speed of sound from heat capacity ratio, specific gas constant, and temperature.

Calculates auxiliary compressor power from pressure increase, flow, and efficiency; it is not device selection.

Calculates auxiliary receiver pressure decay; this is a diagnostic simplification, not an exact thermodynamic model.