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Proceedings Paper

Helicopter pilot estimation of self-altitude in a degraded visual environment
Author(s): John S. Crowley; Loran A. Haworth; Zoltan Peter Szoboszlay; Alan G. Lee
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Paper Abstract

The effect of night vision devices and degraded visual imagery on self-attitude perception is unknown. Thirteen Army aviators with normal vision flew five flights under various visual conditions in a modified AH-1 (Cobra) helicopter. Subjects estimated their altitude or flew to specified altitudes while flying a series of maneuvers. The results showed that subjects were better at detecting and controlling changes in altitude than they were at flying to or naming a specific altitude. In cruise flight and descent, the subjects tended to fly above the desired altitude, an error in the safe direction. While hovering, the direction of error was less predictable. In the low-level cruise flight scenario tested in this study, altitude perception was affected more by changes in image resolution than by changes in FOV or ocularity.

Paper Details

Date Published: 23 June 2000
PDF: 12 pages
Proc. SPIE 4021, Helmet- and Head-Mounted Displays V, (23 June 2000); doi: 10.1117/12.389161
Show Author Affiliations
John S. Crowley, U.S. Army Aeromedical Research Lab. (United States)
Loran A. Haworth, U.S. Army Aeroflightdynamics Directorate (United States)
Zoltan Peter Szoboszlay, U.S. Army Aeroflightdynamics Directorate (United States)
Alan G. Lee, U.S. Army Aeroflightdynamics Directorate (United States)

Published in SPIE Proceedings Vol. 4021:
Helmet- and Head-Mounted Displays V
Ronald J. Lewandowski; Loran A. Haworth; Henry J. Girolamo, Editor(s)

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