In-Flight Measurement of Pressure Distribution Over T-38 Student Canopy,
AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH
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As part of a current in-house effort supporting the development of bird impact resistant transparencies for T-28 aircraft, a system for measuring aerodynamic pressure distribution over a T-38 student canopy has been developed. Static pressures were measured at 103 positions on the canopy of an aircraft in flight. Flight conditions included speeds in the range from 50 taxi to 500 knots, 5 degree side slip, and stalled flight. The paper includes a description of the in-flight recording system, the utilization of a microcomputer and software for data reduction and analysis, and test results. This concept of testing and measurement is believed to be unique and to have potential application to other transparency testing including measurement of in-flight loads and temperatures.