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Recent European Developments in Helicopters

von Kármán, Th. (1921) Recent European Developments in Helicopters. National Advisory Committee on Aeronautics , Washington, DC.

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Descriptions are given of two captured helicopters, one driven by electric power, the other by a gasoline engine. An account is given of flight tests of the gasoline powered vehicle. After 15 successful flight tests, the gasoline powered vehicle crashed due to the insufficient thrust. Also discussed here are the applications of helicopters for military observations, for meteorological work, and for carrying radio antennas.

Item Type:Report or Paper (Technical Report)
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NACA Technical Note47
Record Number:CaltechAUTHORS:20140805-131345983
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47993
Deposited By: George Porter
Deposited On:05 Aug 2014 22:02
Last Modified:03 Oct 2019 06:59

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