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.
German Professor Eugen Sänger conceived of a rocket-propelled airplane in 1934. View of his sketches and notes.View of a workshop, close to his home, where Sänger developed his ideas. It is a nondescript building with wooden exterior and "Deutsche Raketenflug-Werft, Vien1934" (German Rocketflight shipyard, Vienna,1934) scrawled on its door. Professor Sänger and an assistant are seen in doorway of the workshop. Interior views of machinery. Blueprint cross-section of Sängers first Rocket motor (the S.R.1) from 1932. Drawing of test facility arrangement from 1932. Drawing of the S.R.2 rocket motor from 1933, with high pressure liquid oxygen cooling. Drawing of testing apparatus and arrangement from 1933, including Bosch fuel injection pump.
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.
Drawings and pictures of Professor Eugen Sänger's S.R.13 and 14 Rocket motors from September, 1934. He holds a motor in his hand and points out its features. Photograph of Austrian patent certificate number 144809 issued to Doctor Eugen Sänger in Vienna, effective September 15, 1935, for Rocket engine and method for its operation. Glimpse of illustrations in the document. Drawing of planned 500 Kg thrust rocket motor designed by Sänger Rocket Motors. Eugen Sänger's drawings for a rocket-propelled missile to hunt airplanes. Design of a rocket motor (the S.R.X), on June 10, 1934, with 1000 kg thrust for a tropospheric experimental aircraft. Image of a letter to Dr.Sänger, from the the Federal Ministry of National Defense, dated February 3, 1934, stating that his ideas were not practially realizable.
Street fighting in Vienna. The Heimwehr (Nationalists paramilitary Homeguard) Storm troops who support Chancellor Engelbert Dollfuss engage the Socialists and their Republican Guards in battles. The troops seen on the streets. Death toll mounts in strike riots.