Walter HWK 109-500
The Walter HWK 109-500 was a liquid rocket engine in World War II . It worked with the "cold" Walter drive , i. That is, instead of combustion, only a chemical reaction took place. T-Stoff ( hydrogen peroxide ) and Z-Stoff (aqueous solution of sodium or potassium permanganate ) were used as fuel. The engine was combined with the fuel tanks in one container to form the start-up rocket. It delivered approximately 500 kp (4.9 kN) of thrust for 30 seconds . From 1937 mainly heavy bombers or cargo gliders were using this start-up rocketfitted. After take-off, the reusable Walter launch rockets were dropped and floated to earth on a parachute stowed in the front of the engine.
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