Aviation, its principles, its present and future (1913)
Walker, Sydney Ferris · London [etc.] T. C. & C. E. Jack; New York, Dodge publishing co · leaf 14
THE BALLOON AND THE DIRIGIBLE 13 balloon remains at the same level. If the weight of the balloon is decreased, the pressure of the surrounding air tends to lif t it ; and if the quantity of gas present in … FlG. 1. — Typical drifting balloon, showing gas-bag and basket with the method of suspension. the balloon is decreased, so that the difference between its weight and that of a similar volume of air is decreased, the balloon descends. THE DRIFTING BALLOON Fig. 1 shows a typical drifting balloon. As…
Aeronautics · Airplanes
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
