def cas2mach(Vcas, H):
    """Calibrated Airspeed to Mach number"""
    Vtas = cas2tas(Vcas, H)
    Mach = tas2mach(Vtas, H)
    return Mach
def cas2mach ( Vcas , H ) : Vtas = cas2tas ( Vcas , H ) Mach = tas2mach ( Vtas , H ) return Mach
Calibrated Airspeed to Mach number