A technical summary and compilation of characteristics and specifications on steep-gradient aircraft.
By: Prepared by Aircraft Branch, Air Commerce Division, Office of Plans.
Publisher: U.S. Govt. Print. Off.
Published: 1961
Place of publication: Washington
Language: eng
Subjects: Vertically rising aircraft.; Short take-off and landing aircraft.
Other titles: Steep-gradient aircraft.; Project Hummingbird.
Notes: On cover: Project Hummingbird.