Measurement of Pressures and Heat Transfer by FM Telemetry |
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Authors: | Mcdevitt J B Harrison D R Lockman W K |
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Institution: | NASA, Ames Research Center Moffett Field, Calif.; |
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Abstract: | A measurement system for obtaining pressure and heat-transfer data from models flying freely in hypersonic tunnel streams is described. Test models are either released from suspension threads or launched by low-velocity pneumatic launchers and have internal miniaturized frequency-modulated telemetry units. This technique permits the historically desired measurement of support-free afterbody pressure and heat-transfer rates. Base heating and pressure measurements for a cone and a sphere in free flight are included to illustrate application. |
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