Walter HWK 109-500

The Walter HWK 109-500 was a liquid fuelled rocket motor developed by Walter in Germany during the Second World War.

The 109-500 is a Starthilfe (take-off assist) motor in a pod, able to produce 500 kg thrust for thirty seconds. After the fuel was expended, the pod was jettisoned and it returned to earth by parachute.

It entered service in 1942, and some 6,000 were built, by Heinkel. It was "used extensively on a wide range of aircraft", especially the underpowered Jumo 004-engined Arado Ar 234.

Applications

 * Dornier Do 18
 * Heinkel He 111
 * Messerschmitt Me 321