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Visual cueing considerations in Nap-of-the-Earth helicopter flight head-slaved helmet-mounted displaysThe pilot's ability to derive Control-Oriented Visual Field Information from teleoperated Helmet-Mounted displays in Nap-of-the-Earth flight, is investigated. The visual field with these types of displays, commonly used in Apache and Cobra helicopter night operations, originates from a relatively narrow field-of-view Forward Looking Infrared Radiation Camera, gimbal-mounted at the nose of the aircraft and slaved to the pilot's line-of-sight, in order to obtain a wide-angle field-of-regard. Pilots have encountered considerable difficulties in controlling the aircraft by these devices. Experimental simulator results presented here indicate that part of these difficulties can be attributed to head/camera slaving system phase lags and errors. In the presence of voluntary head rotation, these slaving system imperfections are shown to impair the Control-Oriented Visual Field Information vital in vehicular control, such as the perception of the anticipated flight path or the vehicle yaw rate. Since, in the presence of slaving system imperfections, the pilot will tend to minimize head rotation, the full wide-angle field-of-regard of the line-of-sight slaved Helmet-Mounted Display, is not always fully utilized.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Grunwald, Arthur J.
(NASA Ames Research Center Moffett Field, CA, United States)
Kohn, Silvia
(Technion - Israel Inst. of Engineering Haifa., United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Piloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
Subject Category
Man/System Technology And Life Support
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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