Dave Keyser is a subject matter expert with SURVICE Engineering Company. For 37 years, he was an engineer throughout NAVSEA and NAVAIR. His work in gas turbines began with the DD-963 Spruance class as the lead propulsion control engineer. During the following 17 years, he supported the tri-services’ aircraft on various research and testing projects in fire modeling and protection, survivability, flying qualities, and advanced hydraulic actuators and flight control systems. A Fellow of the ASME, he was awarded the Performance Testing Gold Medal. He initiated and helped develop Performance Test Code (PTC) 55 on testing aircraft engines. Dr. Keyser holds a B.S. and M.S. in mechanical engineering from Swarthmore College and the University of Pennsylvania, respectively. He obtained his Ph.D. in aerospace engineering at the Eurotechnical Research University.