Quoting from wikipedia - The Goodyear Inflatoplane was an experimental aircraft made by the Goodyear Aircraft Company, a subsidiary of Goodyear Tire and Rubber Company, well known for the Goodyear blimp. Although it seemed an improbable project, the finished aircraft proved to be capable of meeting its design objectives although its sponsor, the United States Army, ultimately canceled the project when it could not find a "valid military use for an aircraft that could be brought down by a well-aimed bow and arrow."