PLASMA L FOR TORCH POWER CONTROSCRAMJET APPLICATIONMark A. Peretich
VSGC Undergraduate Research Scholar
Dr. Walter F. O’Brien, Dr. Joseph A. Schetz
Virginia Polytechnic Institute and State University
Blacksburg, Virginia 24061, April, 2007
Plasma torches have proven reliable methods of ignition and flame-holding for supersonic combustion applications. The Hy-V Scramjet Flight Experiment plans to use an 800W plasma torch for ignition of hydrogen fuel in a Mach 2 flow—a “first” in a free-flight scramjet experiment. Torch power will be controlled by a proportional feedback system monitoring feedstock pressure, fuel pressure, and a combustion-chamber infrared flame sensor.
Original designs are required for the hardware and control system of the plasma torch operating under these conditions. This paper will discuss the design and construction of a battery power source and controller to achieve and sustain supersonic combustion.