Instrument-flight results obtained with a combined-signal flight indicator modified for helicopter use

Almer d. Crim, John P. Reeder, James B. Whitten
Aug 1952

A commercially available flight indicator which combines heading, bank-angle, fuselage-pitch-attitude, and, if desired, altitude and radio-aid information was flight-tested in order to determine its suitability for helicopter instrument flying. The indicator was installed in the instrument panel of a single-rotor helicopter specially equipped for blind flying and was evaluated by performing prescribed maneuvers with conventional instruments and with the combined-signal flight indicator.

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