Airspeed Display Scale with Integral Trend Indication.
Patent, Filed 11 Jun 81, patented 15 Nov 83,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A digitally activated display scale in association with digital-electronic circuitry, display both the airspeed and airspeed trend of a landing aircraft. The digitalelectronic circuitry process an analog voltage corresponding to an airspeed range of 80 to 179 knots to produce a digital number representative of the airspeed of the landing aircraft. The digital number is used to produce a continuous display of the airspeed and to indicate the trend of the airspeed as either increasing or decreasing.
- Flight Control and Instrumentation