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Proceedings Paper

Design and flight evaluation of visually-coupled symbology for integrated navigation and near-terrain flight guidance
Author(s): Harry N. Swenson; Richard E. Zelenka; Munro G. Dearing; Gordon H. Hardy; Raymond Clark; Andre Zirkler; Tom Davis; Gary Amatrudo
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Paper Abstract

NASA and the U.S. Army have designed, developed and flight evaluated a Computer Aiding for Low-Altitude Helicopter Flight (CALAHF) guidance system. This system provides guidance to the pilot for near-terrain covert helicopter operations. The system automates the processing of precision navigation information, helicopter mission requirements and terrain flight guidance. This automation is presented to the pilot through symbology on a helmet mounted display. The symbology is a 'pilot-centered' design which preserves pilot flexibility and authority over the CALAHF system's automation. An extensive flight evaluation of the system has been conducted using the U.S. Army's NUH-60 STAR (Systems Testbed for Avionics Research) research helicopter. The evaluations were flown over a multi-waypoint helicopter mission in rugged mountainous terrain. The system was evaluated at terrain clearance altitudes from 300 to 125 feet, and airspeeds from 40 to 110 knots. The results of these evaluations showed that the pilots could precisely follow the automation symbology while maintaining a high degree of situational awareness.

Paper Details

Date Published: 10 June 1994
PDF: 12 pages
Proc. SPIE 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements, (10 June 1994); doi: 10.1117/12.177359
Show Author Affiliations
Harry N. Swenson, NASA Ames Research Ctr. (United States)
Richard E. Zelenka, NASA Ames Research Ctr. (United States)
Munro G. Dearing, NASA Ames Research Ctr. (United States)
Gordon H. Hardy, NASA Ames Research Ctr. (United States)
Raymond Clark, U.S. Army Communications and Electronics Command (United States)
Andre Zirkler, U.S. Army Communications and Electronics Command (United States)
Tom Davis, U.S. Army Communications and Electronics Command (United States)
Gary Amatrudo, U.S. Army Communications and Electronics Command (United States)


Published in SPIE Proceedings Vol. 2218:
Helmet- and Head-Mounted Displays and Symbology Design Requirements
Ronald J. Lewandowski; Wendell Stephens; Loran A. Haworth, Editor(s)

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