The Walter HWK 109-509 powered the first piloted aircraft of any type to exceed how many MPH in level flight?
Walter HWK 509 The Walter HWK 109-509 was a German liquid-fuel bipropellant rocket engine that powered the Messerschmitt Me 163 Komet and Bachem Ba 349 aircraft. It was produced by Hellmuth Walter Kommanditgesellschaft (HWK) commencing in 1943.
Lancair Propjet The Lancair Propjet is a four-seat, pressurized, composite aircraft powered by a 750-hp Walter M601E turboprop engine. The aircraft is based on Lancair's successful kit-plane, the Lancair IV. Like its piston-powered predecessor, the Propjet is noted for its performance, with a typical cruise speed of 325 knots at 24,000 feet and a climb performance of 4,000 feet per minute.