Hermann Noordung pseudonym for Capt. Potocnik of the Austrian Imperial Army) expanded the ideas of Hermann Oberth on space flight in a detailed description of an orbiting space observatory. The problems of weightlessness, space communications, maintaining a livable environment for the crew, and extravehicular activity were considered. Among the uses of such an observatory were chemical and physical experiments in a vacuum, telescopes of great size and efficiency, detailed mapping of the earth's surface, weather observation, surveillance of shipping routes, and military reconnaissance. References: 16 .

Started to lift at 13 sec; rose at 14 1/2 sec; reached top of flight (90 ft) at 17 sec; hit ground at 18 1/2 sec; landed 171 ft from tower. The rocket carried a small camera, thermometer, and a barometer which were recovered intact after the flight. Flight was bright and noisy, attracted public attention. The result was a great deal of "moon rocket" publicity. This resulted in prohibition of further test flights from Aunt Effie's Farm by the local fire marshall. Length 11 ft 6 in.; maximum diameter 26 in.; weight 32 lb; gasoline 14 lb; liquid oxygen 11 lb; total loaded weight 57 lb. Up to that time Goddard had achieved numerous proving-stand tests of liquid rockets, and 10 attempts at flight tests, of which four achieved flight. References: 17 , 482 .

Use of a battery of solid-propellant rockets on Junkers-33 seaplane, the first recorded jet-assisted take-off of an airplane, made in tests near Dessau, Germany. References: 17 .

Opel Sander Rak. 1, a glider powered with 16 rockets of 50 pounds of thrust each, made successful flight of 75 seconds, covering almost 2 miles near Frankfurt-am-Main, Germany, Von Opel as pilot. References: 17 .