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Abstract

NRC researchers investigated the tradeoffs between binocular-overlap and field-of-view in helmet-mounted displays. Four test pilots performed a series of maneuvers in a helicopter while wearing field-of-view (FOV) limiting goggles. They evaluated a monocular FOV, a range of binocular overlaps, and unrestricted vision. Pilots evaluated the system performance and handling qualities using Cooper-Harper Handling Qualities Ratings, visual cue ratings, and subjective comments. The handling qualities of the helicopter/pilot system changed in a non-linear fashion as the binocular overlap increased. Pilot comments, preferences, and visual cue ratings showed the same trends as the handling qualities data. Practical applications of the results are discussed, including helicopter control system augmentation to allow improved performance in degraded visual conditions.

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An Investigation of Helmet-Mounted Display Field-of-View and Overlap Tradeoffs

Abstract

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