Travels in space; a history of aerial navigation (1902)
Valentine, E. Seton, Tomlinson, F. L. · London Hurst and Blackett · leaf 300
propellers, which movethe aerodrome forward, so that it is sustained by thereaction of the air beneath its supporting surfaces.The total weight of the machine was about 25 pounds,and the length from tip to tip of the supporting-surfaces was about 14 feet. The public curiosity, which had been… … » fe ^ ^ a E-i ?! a-. S & C rt p p H «! W w CB S r^ >^ ^ n *« A HISTORY OF AERIAL NAVIGATION. 283 that date two actual ascensions were made, in such amanner that no one could fail to recognize thatthe practicability of mechanical flight had beendemonstrated. The aerodrome at a given signal…
Aeronautics
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