Austin, J. M. and Cooper, M. and Jackson, S. and Wintenberger, E. and Shepherd, J. E. and Sturtevant, B. (2000) Small Scale Detonation Studies: Direct impulse measurements for detonations and deflagrations. California Institute of Technology , Pasadena, CA. (Unpublished) http://resolver.caltech.edu/CaltechGALCITFM:2000.005
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This report is an account of research carried out from January to June 2000 on the feasibility of detonation initiation and impulse generation for small-scale pulse detonation engines. The initial work was focussed on the direct measurement of impulse using the ballistic pendulum technique for single detonations initiated in a tube with one end open to the atmosphere through a thin diaphragm. Three tubes were used: (1) 38-mm diameter by 1.5 m long. (2) 75-mm diameter by 0.6 m long. (3) 75-mm diameter by 1 m long. At the closed end of the tube, combustion was initiated by a low energy, less than 50 mJ, capacitor discharge system. A fast flame or detonation was created by transition to detonation. The effect of spirals and orifice plates was examined on propane- and ethylene-oxygen-nitrogen mixtures with varying initial pressure, equivalence ratio, and dilution amounts. A simple model for the impulse in prompt detonations was developed and calibrated. The results of our experiments were compared with this model.
|Item Type:||Report or Paper (Technical Report)|
|Additional Information:||Explosion Dynamics Laboratory Report FM00-5. Prepared for General Electric, contract GE - PO A02 81655 under DABT-63-0-0001|
|Group:||Graduate Aeronautical Laboratories (Fluid Mechanics)|
|Usage Policy:||You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.|
|Deposited By:||Imported from CaltechGALCITFM|
|Deposited On:||25 May 2005|
|Last Modified:||25 Feb 2014 20:21|
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