Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon (1908)
Hildebrandt, A. (Alfred), b. 1870, Story, W. H. tr · New York, D. Van Nostrand company · leaf 73
gine, whichwas of the Lenoir type, and had four horizontal cylinders, giving6 h.-p., with an hourly consumption of 250 cubic feet of gas. Thegas for the engine was taken from the balloon itself, and theloss was to be made good by blowing out the air-bags. The carwas made of beams running… … Fig-. 25.—Paul Haenleins dirigible balloon. could not ascend to great heights, and the trials were thereforeundertaken at a short distance from the ground, the balloonbeing kept in the captive state by ropes loosely held by soldiers.It attained a speed of 15 ft. per second, and this is an…
Aeronautics
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