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Proceedings Paper

Effect of field-of-view restriction on rotocraft pilot workload and performance: preliminary results
Author(s): Zoltan Peter Szoboszlay; Loran A. Haworth; Thomas L. Reynolds; Alan G. Lee; Zsolt L. Halmos
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Paper Abstract

The Aeroflightdynamics Directorate of the US Army's Aviation Research, Development and Engineering Center initiated a study to determine the effects of limiting a rotorcraft pilot's field-of-view (FOV) on performance and workload. Pilot FOV was restricted to simulate current and next generation helmet mounted display FOVs used in night vision systems. A helmet visor was constructed for this test to restrict the horizontal peripheral limits of the square shaped FOV to values of 100, 80, 60, 40, and 20 degrees. The vertical limits and overlap were held constant to 40 degrees (except for the 20 degree FOV). Six pilots executed a series of prescribed low altitude maneuvers with an instrumented NAH-IS (Cobra) rotorcraft at the Crows Landing Airfield located in California. The aircraft flight path was measured with a laser tracker. On board data was recorded, as well as pilot handling quality ratings and visual cue ratings. This test is not yet complete, but some preliminary observations and results are provided. It was observed that reducing FOV increased the difficulty of controlling the aircraft and altered head movement. Reducing FOV also diminished the pilots' situational awareness. The reduction in situational awareness affected the ability of the pilots to provide an accurate report of their own flying performance, and the ability to observe warning indicators inside the cockpit.

Paper Details

Date Published: 22 May 1995
PDF: 12 pages
Proc. SPIE 2465, Helmet- and Head-Mounted Displays and Symbology Design Requirements II, (22 May 1995); doi: 10.1117/12.209732
Show Author Affiliations
Zoltan Peter Szoboszlay, U.S. Army Aeroflightdynamics Directorate (United States)
Loran A. Haworth, U.S. Army Aeroflightdynamics Directorate (United States)
Thomas L. Reynolds, U.S. Army Aeroflightdynamics Directorate (United States)
Alan G. Lee, Serv-Air (United States)
Zsolt L. Halmos, Serv-Air (United States)

Published in SPIE Proceedings Vol. 2465:
Helmet- and Head-Mounted Displays and Symbology Design Requirements II
Ronald J. Lewandowski; Wendell Stephens; Loran A. Haworth, Editor(s)

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