1969-02-01

VTOL Flight Investigation to Develop a Decelerating Instrument Approach Capability 690693

The inability of available situation displays to provide a decelerating instrument approach capability to a hover led to a flight research program in which control-command information was displayed for three degrees of freedom. The test aircraft (NASA's CH-46C in-flight simulator) was stabilized with high-gain attitude command system. Using this system, the pilot was able to decelerate the aircraft to a hover while simultaneously following a 6 deg glidepath. Although these tests demonstrate the potential of this concept, a number of factors, including adequate integration of command and situation information, were identified as affecting pilot acceptance of the system.

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