Doppler Hover System (DHS) Flight Test Report.
ARMY AVIATION RESEARCH AND DEVELOPMENT COMMAND ST LOUIS MO
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This report presents the flight test evaluation of a self-contained hover system concept design for the AAH and ASH helicopters. The configured system includes the Lightweight Doppler Navigation System LDNS, a simulated Pilot Night Vision System PNVS utilizing a closed circuit daylight TV system and analog symbol generator. The emphasis of the flight test was to determine hover performance and the potential of the LDNS to provide adequate velocity information near zero. This velocity and other quantitative parameters were symbolically displayed with imagery on a panel-mounted CRT such that the pilot was able to manipulate them to maintain an accurate manual hover.
- Infrared Detection and Detectors