Rocket cooling investigations influenced rocketry pioneer, Professor Eugen Sänger's design for his rocket motor, S.R.3. View of his drawings and notes from 1934. Display of mechanical parts from the S.R.3. Items comprising test apparatus for the rocket motor, with various parts labeled. Mechanical Testing setup in Sänger's work shop and instrumentation, labeled in German, showing things such as motor thrust, pump pressure, liquid oxygen level, etc. The first burn test on March 15, 1934. Sänger stands in doorway of his workshop in Vienna, using a long pole to initiate the burn. Various views of flames emanating from the prototype rocket motor during the burn test. A revised sketch of the S.R.3 prototype rocket motor. Test of this version with flames barely visible due to complete combustion, during start-up and operation.
Professor Eugen Sänger's design for self-cooling rocket motor, March 20, 1934. Drawing of Rocket motor S.R.4, from April 14, 1934, designed with a cooling coil around the combustion chamber jacket. Drawing of Motor S.R.5, from April 24, 1934, with exits in the combustion chamber and nozzle only from cooling coils. Picture of the S.R.5 motor. Sänger's drawings for a self-demanding pumping head in single and double piston designs. Such a rocket motor, designed on May 13, 1934, to generate 100 Kg of thrust. Pictures of the S.R.5 rocket motor and test apparatus, with it firmly fastened to a steel plate to keep it from moving during the burn test. Closeup of the actual burn test in Professor Sänger's workshop, Vienna Austria.
Drawing of "L-Rocket," dated January 5, 1933. Professor Eugen Sänger's S.R.6 Rocket motor from May 23, 1934, in which the combustion chamber is the same design as the slim nozzle of the L-Rocket. Actual parts of the S.R.6 motor. Plan of Rocket motor S.R.7 from May 21, 1934, with fuel inlet cooling by coiled pipe to the nozzle jacket. Second version of S.R.7 from June 5th, with cooling in the outer shell. Drawings of Versions three and four of the S.R.7. and scenes of the actual hardware held in Sänger's hand. He unscrews part and points out the features. He points out the cooling coils around the combustion chamber. Another version is similarily displayed after he removes its outer shell.
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 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.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.
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