Max Valier
From The Space Library
Paul Heylandt and Max Valier, April 1930, with Rak 7 LOX/Alcohol rocket car. Walter Riedel in white lab coat in the background
Valier fires the engine on the RAK-7 rocket car, April 1930, representing the first time a liquid fuelled rocket had propelled a manned vehicle.
Heylandt/Riedel rocket car test firing engine 160kg thrust (c. May 1931).
The image above is taken at Heylandt factory in Berlin-Britz after Valier's death. Work continued with Riedel, Heylandt and Arthur Rudolph. Cylindrical fuel tank at front, large spherical oxygen tank in rear.