V/STOL Flight Director Systems

In keeping with growing requirements for full instrument flight capability in V/STOL vehicles, development effort has been initiated by Sperry Flight Systems Division to improve the pilot control-display interface. Work has been performed in both the command display area and in testing of various operational flight director modes. This paper describes a three-axis flight director system which provides commands for precise control of helicopter, deflected slipstream STOL, or VTOL attitude and power under instrument conditions to very low ceiling and visibility landings.