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.
Austrian Red Cross horse carts passing by a bridge during the 2nd Balkan War. Mountains in the background. Men walk and take the horse carts with their ropes tied on their mouths. Men take water in vessels at a pond. Washed clothes are put on the rocks to dry.
Slavic Prisoners of War on a road in Austro-Hungary during the Second Balkan War. Prisoners wearing overcoats, walk on a country road. Mountains in the background in Austro-Hungarian region.