Walter 109-509C rocket engine combustion chamber, c 1944.
© Science Museum / Science & Society Picture Library
The Walter 109-509C two-chambered rocket engine was intended for use on Germany's Meserschmitt Me 263 and Junkers Ju 248 second generation rocket-powered interceptor aircraft, but hostilities in Europe ended before it was made operational. It burned a fuel mixture of methyl alcohol and hydrazine in hydrogen peroxide. The photograph shows a close-up of the sectioned smaller chamber. The 'pepper pot' holes in the injector head can clearly be seen.