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Supersonic compressor

United States Patent

February 26, 2008
View the Complete Patent at the US Patent & Trademark Office
A gas compressor based on the use of a driven rotor having an axially oriented compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which forms a supersonic shockwave axially, between adjacent strakes. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the gas compression ramp on a strake, the shock capture lip on the adjacent strake, and captures the resultant pressure within the stationary external housing while providing a diffuser downstream of the compression ramp.
Lawlor; Shawn P. (Bellevue, WA), Novaresi; Mark A. (San Diego, CA), Cornelius; Charles C. (Kirkland, WA)
Ramgen Power Systems, Inc. (Bellevue, WA)
11/ 091,680
March 28, 2005
STATEMENT OF GOVERNMENT INTEREST This invention was made with United States Government support under Contract No. DE-FC026-00NT40915 awarded by the United States Department of Energy. The U.S. Government has certain rights in the invention.