EAS2TAS from ARSP.Temp

def EAS2TAS(ARSP,GPS,BARO,ground_temp=25):
    '''EAS2TAS from ARSP.Temp'''
    tempK = ground_temp + 273.15 - 0.0065 * GPS.Alt
    return sqrt(1.225 / (BARO.Press / (287.26 * tempK)))