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Method and apparatus for starting supersonic compressors

United States Patent

April 10, 2012
View the Complete Patent at the US Patent & Trademark Office
A supersonic gas compressor. The compressor includes aerodynamic duct(s) situated on a rotor journaled in a casing. The aerodynamic duct(s) generate a plurality of oblique shock waves for efficiently compressing a gas at supersonic conditions. The convergent inlet is adjacent to a bleed air collector, and during acceleration of the rotor, bypass gas is removed from the convergent inlet via a collector to enable supersonic shock stabilization. Once the oblique shocks are stabilized at a selected inlet relative Mach number and pressure ratio, the bleed of bypass gas from the convergent inlet via the bypass gas collectors is eliminated.
Lawlor; Shawn P. (Bellevue, WA)
Ramgen Power Systems, LLC (Bellevue, WA)
12/ 355,702
January 16, 2009
STATEMENT OF GOVERNMENT INTEREST This invention was made with United States Government support under Contract No. DE-FC26-06NT42651 awarded by the United States Department of Energy. The Government has certain rights in the invention.