Military aeroplanes, simplified, enlarged; an explanatory consideration of their characteristics, performances, construction, maintenance, and operation, specifically arranged for the use of aviators and students (1918)
numer-ous separate, drum-shaped gas containers instead of balloons.The stiff frame provides, in itself, that necessary rigidity of hull,which interior gas pressure on the envelope provides in the othertypes. The Zeppelin airship was the first successful development ofthe rigid system, and is useful…
Airplanes · Aeronautics, Military
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The United States art directory and yearbook : [1st-2d year] : a guide for artists, art students, travellers, etc. (1888)](https://img.insideoutlibrary.com/img/200/ia-unitedstatesartd02koeh-290-33.webp)
