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.
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.
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.