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This is a rocket engine, designed for propelling a German guided flying bomb, the Henschel Hs 293. It was constructed in the small experimental plant “H. Walter KG” in Kiel, headed by prof. Hellmuth Walter, who, since 1935, had been dealing with the practical use of hydrogen peroxide...

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This is a rocket engine, designed for propelling a German guided flying bomb, the Henschel Hs 293. It was constructed in the small experimental plant “H. Walter KG” in Kiel, headed by prof. Hellmuth Walter, who, since 1935, had been dealing with the practical use of hydrogen peroxide, initially for the propulsion of submarines and then also for airplanes.
There was no combustion process of propellants in this engine. The propellants were produced on the basis of the decomposition of catalytic hydrogen peroxide (hydrogen peroxide with a concentration of approx. 80%), the so-called “T-Stoff”, in contact with the liquid catalyst (calcium permanganate) of the so-called “Z-Stoff”. The reaction temperature fluctuated around the value of approx. 500 degrees celsius. Thanks to its form of construction, it has been included in the category of ‘cold’ rocket engines.
The engine was placed in a gondola suspended under the hull of a flying bomb in such a way that the vector of its thrust intersected with the centre of gravity of the projectile. Its flaw was freezing at higher altitudes, caused by the humidity of compressed air, necessary for transferring propellants.
The Hs 293 guided flying bomb, which this engine was used to power, was intended for combating marine targets (ships and warships), but, at the end of the war, it was also used to destroy the bridges on the Oder.

Elaborated by Polish Aviation Museum, © all rights reserved

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