 Some craft only use PAR thrust during takeoff; notable examples of this are the KM and Lun Ekranoplanes that situated their jet engines forward of the wing and deflected the thrust downwards under the wing.Once airborne and at a speed where sufficient lift was generated by the wing alone, the deflection could be removed.The KM required 10 turbojets to have enough power to take off, 8 of them operating in PAR mode; once in level flight, the engines could be throttled back extensively or some of them even shut off.