Travels in space; a history of aerial navigation (1902)
Valentine, E. Seton, Tomlinson, F. L. · London Hurst and Blackett · leaf 330
A HISTORY OF AERIAL NAVIGx^TION. 311 that we had not yet learned how to use theballoon. The fact is, and it soon grew to be generally recog-nised, that the dirigibility of a balloon depended uponits shape, but principally upon the kind of motor … SANTOS-DUiluNT GIVING THE SIGNAL. employed. Electricity had not been a success ;inventors now turned to petroleum. The lightpetroleum motors of Daimler, Mors and others werenow available, weighing only some lolbs. per horse-power. There had come to Paris a wealthy young Brazilian, 312 TRAVELS IN…
Aeronautics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
