de Bothezat Helicopter Album

Summary
Collection ID:
NASM.2002.0035
Dates:
undated
Languages:
English
Physical Description:
0.1 Cubic Feet
(1 flatbox)
Repository:

Scope and Contents
Scope and Contents
This album contains eleven photographs of the de Bothezat Helicopter in flight, a photograph of Dr. George de Bothezat, an illustration of the de Bothezat Helicopter, and memorandum from the War Department Air Service Engineering Division from April 28, 1923 concerning the test flights of this helicopter at McCook Field.

Biographical / Historical
Biographical / Historical
During the early twenties many experimenters in aviation undertook the challenge of making a craft which would rise vertically and hover in the air. Realizing that such a machine would have military value for observation and fire-control, the war department of several nations encouraged such inventions. The de Bothezat Helicopter was developed by the U. S. Air Service, Engineering Division in 1921 with these ideas in mind. Dr. George de Bothezat, a noted Russian aeronautical engineer at the time, designed the helicopter. The de Bothezat was 65 feet long, 65 feet wide, and 10 feet high. It was powered with a 180 h.p. engine and weighed 3,600 lbs. The engine was located at the center above the four-wheeled chassis. Four triangular framework arms extended at right angles, and at their extremity each supported a six-bladed air screw, which is the chief feature of the de Bothezat. Many power tests were made at McCook Field in Dayton, Ohio. The test on December 18, 1922 was notable with a duration in the air of one minute 42 seconds which was attained at a maximum height of six feet.

Administration
Immediate Source of Acquisition
Phillip Weiner, Gift, 2002

Using the Collection
Conditions Governing Access
No restrictions on access.
Preferred Citation
de Bothezat Helicopter Album, Accession 2002-0035, National Air and Space Museum, Smithsonian Institution.
Conditions Governing Use
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests

Keywords
Keywords table of terms and types.
Keyword Terms Keyword Types
Helicopters Topic Search Smithsonian Collections Search ArchiveGrid
Aeronautics Topic Search Smithsonian Collections Search ArchiveGrid
de Bothezat Helicopter Topic Search Smithsonian Collections Search ArchiveGrid
Helicopters -- Flight testing Topic Search Smithsonian Collections Search ArchiveGrid
Aerospace engineering Topic Search Smithsonian Collections Search ArchiveGrid
Photographs Type Search Smithsonian Collections Search ArchiveGrid
Illustrations Type Search Smithsonian Collections Search ArchiveGrid
Memoranda Type Search Smithsonian Collections Search ArchiveGrid
De Bothezat, George, 1882-1940 Personal Name Search Smithsonian Collections Search ArchiveGrid
McCook Field, Ohio Corporate Name Search Smithsonian Collections Search ArchiveGrid

Repository Contact
National Air and Space Museum Archives
14390 Air & Space Museum Parkway
Chantilly, VA 20151
NASMRefDesk@si.edu
http://airandspace.si.edu/research/resources/archives/