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Pressure and Thrust Measurements of a High-Frequency Pulsed-Detonation ActuatorThis paper describes the development of a small-scale, high-frequency pulsed detonation actuator. The device utilized a fuel mixture of H2 and air, which was injected into the device at frequencies of up to 1200 Hz. Pulsed detonations were demonstrated in an 8-inch long combustion volume, at approx.600 Hz, for the lambda/4 mode. The primary objective of this experiment was to measure the generated thrust. A mean value of thrust was measured up to 6.0 lb, corresponding to specific impulse of 2611 s. This value is comparable to other H2-fueled pulsed detonation engines (PDEs) experiments. The injection and detonation frequency for this new experimental case was approx.600 Hz, and was much higher than typical PDEs, where frequencies are usually less than 100 Hz. The compact size of the model and high frequency of detonation yields a thrust-per-unit-volume of approximately 2.0 lb/cu in, and compares favorably with other experiments, which typically have thrust-per-unit-volume values of approximately 0.01 lb/cu in.
Document ID
20080022352
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Nguyen, Namtran C. (George Washington Univ. United States)
Cutler, Andrew D. (George Washington Univ. United States)
Date Acquired
August 24, 2013
Publication Date
June 1, 2008
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
NASA/CR-2008-215315
Funding Number(s)
CONTRACT_GRANT: NNL06AA16A
WBS: WBS 526282.01.07.04.06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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