def specific_heat_constant_volume(Cp: float, AIR_CONST=287.031) -> float:
    """Calculates the specific heat constant volume for 260 K < T < 600 K

    Args:
        Cp (float):  Spectfic Heat Constant Pressure [J/kg*K].
        AIR_CONST (float, optional): Gas constant for air [J/K/kg].
            Defaults to 287.031.

    Returns:
        float: Spectfic Heat Constant Volume [J/kg/K].
    """
    return Cp - AIR_CONST