Drawings of Professor Eugen Sänger's S.R.8 Rocket motor from July 5, 1934. The actual motor set next to a milimeter scale. Chamber of SR8 with external cooling groove before and after welding. Various views of the S.R.8. on the test stand with instrumentation in place, inside Sänger's workshop, in Vienna, July 19, 1934. Closeups of the test firing of the S.R.8 rocket motor, showing consistent smooth controlled burning.
Drawings and pictures of Professor Eugen Sänger's S.R.11 and 12 Rocket motors from August, 1934. He holds a motor in his hand and points out fuel inlet ports and the flame exhaust port. Views of the S.R.12 rocket motor on the test stand in Sänger's workshop in Vienna.
Austrian troops prepare to resist the Nazi German forces in Vienna, Austria. The Austrian Home Guard are attached to regular military forces of the nation to strengthen fighting units. Austrian soldiers are issued rifles which were loaded on a truck. The soldiers with rifles slung over their shoulders. An Austrian officer reviews his troops.
Peasants celebrate Saint John's Day in Vienna, Austria. Peasants gather in large number during night time with lit torches in their hands at a traditional ceremony.
President Miklas drives first nail into the 'Soldier of Iron', a huge wooden statue in Vienna, Austria to raise funds for building a monument honoring the country's fallen heroes. People gather in large numbers at the eve.
Drawings of Professor Eugen Sänger's S.R.9 Rocket motor from July 24, 1934. Thrust force graphs for the S.R.8 and S.R.9 obtained during burn tests. The S.R.10 rocket motor designs of August 1934, one with a circular combustion chamber and another with cylindrical chamber. Experiments using a high-pressure oxygen tanks. A technician standing near a high pressure tank, and placing a tank into a larger container. Two men pouring liquid oxygen from a tank. High pressure oxygen cylinder and fueling containers standing outside Sänger's workshop in Vienna. A technician filling a container from high pressure tank.
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