Three-Inch Vertical Tape Altimeter and Airspeed-Mach Indicator Evaluation.
INSTRUMENT FLIGHT CENTER RANDOLPH AFB TEX
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The Research and Development Division of the USAF Instrument Flight Center conducted a pilot factors evaluation of a three-inch altimeter and a three-inch tape airspeed-mach indicator to determine the utilitysuitability of the displays. Approximately 35 hours were flown by nine subject pilots using a T-39 as the test bed for evaluating the displays. From the responses to these questionnaires, it was deemed inadvisable to adopt the altimeter as a primary flight instrument because misinterpretation of altitude remains a problem. However, the tape airspeed-mach indicator was found acceptable as a primary flight instrument.
- Flight Control and Instrumentation