Drag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter /

Drag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter /

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Bibliographic Details
Author / Creator:Toussaint, A., author.
Imprint:[Washington, D.C.] : National Advisory Committee for Aeronautics, 1920.
Description:1 online resource (5 pages).
Language:English
Series:Technical notes / National Advisory Committee for Aeronautics ; No. 21
Technical note (United States. National Advisory Committee for Aeronautics) ; 21.
Subject:
Drag (Aerodynamics)
Rotors (Helicopters)
Drag (Aerodynamics)
Rotors (Helicopters)
Format: E-Resource U.S. Federal Government Document Book
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/12008281
Hidden Bibliographic Details
Other authors / contributors:United States. National Advisory Committee for Aeronautics, issuing body.
Notes:"September, 1920."
"Resume translated from the French by the Paris Office, N.A.C.A."
"Paper read by M. Toussaint, Engineer of the Aerotechnical Institute of the University of Paris, (St.-Cyr l'Ecole), before the Scientific Commission of the Aero Club of France, January 24th, 1920"--Page 1.
No Federal Depository Library Program (FDLP) item number.
Description based on online resource, PDF version; title from title page (TRAIL, viewed January 14, 2020).
Other form:Print version: Toussaint, A. Drag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter
GPO item no.:9999 (online)
Govt.docs classification:Y 3.N 21/5:6/21

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