NASA NTRS · 19930088537
Note on Hovering Turns with Tandem Helicopters
Abstract
The source of an appreciable pitching-moment difference between left and right hovering turns for a tandem helicopter is described. The difference in pitching moment results from the difference in rotational speed of the counter rotating rotors with respect to the air while the helicopter is turning.
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Reeder, John P, Tapscott, Robert J. 1955-01-01. Note on Hovering Turns with Tandem Helicopters. https://ntrs.nasa.gov/citations/19930088537
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