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 118
The weightof the whole was rather less than 3 cwt. It was anchored by arope to the middle of the track. The tests showed that a deadweight of 72 lbs., placed on the front wheels, could be lifted30 ins. into the air, and this proved that the principles of con-struction were correct. It seems curious… … Fig. 51.—Phillips flying machine. when in motion. These points can only be settled after theexpenditure of much time and money. Some of the most interesting experiments were carried out bySir Hiram Maxim in 1888, with the assistance of the late Pro-fessor Langley. The aeroplane cost over £20,000,…
Aeronautics
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