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 106
s 157 ft., and thecapacity 88,300 cubic feet. Two air-bags are placed inside theenvelope, one at the front and one at the back. These bags areconstantly filled by a fan, driven by a special motor, any excessof air escaping through the safety valves. By a special arrange-ment of valves, the driver… … CD So the air to the back or front air-bag, thereby causing a displace-ment of the centre of gravity. The surfaces, which are used forsteering and for adding stability to the balloon, are blown upunder pressure, and the shape which they thus assume is 86 AIKSHIPS PAST AND PEE SENT. considered to be…
Aeronautics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
