1. Department of Mechanical and Aerospace Engineering, Propulsion Research Center, University of Alabama in Huntsville, 5000 Technology Drive, Olin B. King Technology Hall, Huntsville, AL 35899
2. Professor Department of Mechanical and Aerospace Engineering, Propulsion Research Center, University of Alabama in Huntsville, 5000 Technology Drive, Olin B. King Technology Hall S236, Huntsville, AL 35899 e-mail:
3. Combustion Engineering, Solar Turbines Incorporated, 2200 Pacific Highway, Mail Zone E-4, San Diego, CA 92186-5376