The following sections of this BookRags Literature Study Guide is offprint from Gale's For Students Series: Presenting Analysis, Context, and Criticism on Commonly Studied Works: Introduction, Author Biography, Plot Summary, Characters, Themes, Style, Historical Context, Critical Overview, Criticism and Critical Essays, Media Adaptations, Topics for Further Study, Compare & Contrast, What Do I Read Next?, For Further Study, and Sources.
(c)1998-2002; (c)2002 by Gale. Gale is an imprint of The Gale Group, Inc., a division of Thomson Learning, Inc. Gale and Design and Thomson Learning are trademarks used herein under license.
The following sections, if they exist, are offprint from Beacham's Encyclopedia of Popular Fiction: "Social Concerns", "Thematic Overview", "Techniques", "Literary Precedents", "Key Questions", "Related Titles", "Adaptations", "Related Web Sites". (c)1994-2005, by Walton Beacham.
The following sections, if they exist, are offprint from Beacham's Guide to Literature for Young Adults: "About the Author", "Overview", "Setting", "Literary Qualities", "Social Sensitivity", "Topics for Discussion", "Ideas for Reports and Papers". (c)1994-2005, by Walton Beacham.
All other sections in this Literature Study Guide are owned and copyrighted by BookRags, Inc.
In 1893 David Schwarz, an Austrian engineer, drew up plans for an airship which was constructed of an inside framework that was strong enough to support a gas envelope. By 1897, Schwarz, who was working in Berlin, Germany, had built the first practical airship with a metal envelope. The structure was sheathed in aluminum foil (a new metal at this time) and shaped like a cannon shell, with measurements of 135 ft (41 m) in length, 46 ft (14 m) in diameter, and a volume of 130,000 cubic ft (3,640 cu.m). It had a twelve horsepower engine turning three propellers. The craft was not tested until after Schwarz's death in 1897 (which is said to have been caused by a heart attack when the Prussian Ministry of War offered to buy his invention). The test, however, ended disastrously. The propeller belts broke, and the pilot valved gas too quickly, causing the ship to bounce to a crash landing which destroyed it.
One man who watched this crash was determined that no such failure would ever affect his plans. Count Ferdinand von Zeppelin became interested in the airship, bought the patent rights from Schwarz's widow, and went on to perfect the rigid airship.