Vehicle concepts and technology requirements for buoyant heavy-lift systems
By: Mark D. Ardema
Contributors: United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Series: NASA technical paper -- 1921
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Branch; For sale by the National Technical Information Service]
Published: 1981
Place of publication: Washington, D.C; [Springfield, Va
Language: eng
Number of pages: 16
Subjects: Airplanes -- Design and construction; Helicopters -- Design and construction
Notes: "September 1981"--Cover

Subject category 05

Includes bibliographical references