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118 Military Jet Engine Acquisition The P&W F119-PW-100 production prototype first flew in 1997. The engine appeared to be experiencing relatively few technical difficul- ties during the F-22 EMD flight test program, especially in compari- son with the F100 and TF30 programs. According to one source, the F119-PW-100 performed “without fault” during the first 500 hours of flight testing on two F-22 EMD prototypes (“F119 Engine Takes F-22 Raptor ...,” n.d.). Apparently, Pratt & Whitney had learned its lesson and had been wise in adopting a slightly more conservative technical approach. Selection of the F119 for the F-22 and successful initial development of the F119 made it a likely candidate for other fighter programs. In spring 1995, Boeing, Lockheed Martin, and McDonnell Douglas, the three contractors that had teams competing during the concept- development and risk-reduction phase of the Joint Strike Fighter (JSF) program, all selected a derivative of the F119 as the engine to power their JSF designs.13 Key performance requirements were very high reliability for the single-engine Navy JSF variant and sufficient nonaugmented thrust for the short takeoff and vertical landing (STOVL) JSF variant. All three contractor teams decided to start with the F119-PW-100 core and tailor the nozzle, fan, controls, and other features for each variant. The Boeing and Lockheed designs required redesigned fans and low-pressure turbines. At the time, it became clear that the JSF F119 program would become a fairly significant development effort. With P&W supplying the engine for both the F-22 and all the JSF prime contractor contenders, not to mention all F-15s and a good number of F-16s, concerns grew about the need to provide greater competition and continue support for GE, the country’s sole second source for high-performance fighter engines. In the summer of 1995, Congress directed the JSF Joint Program Office to pursue a second engine source to maintain engine competition during production in the JSF program, as had existed in the 1980s with the F-16 “Great Engine War.” In late November 1995, initial development contracts were awarded to P&W for an F119 derivative and to a GE/Allison team for design studies for the YF120 and F110 variants for the JSF. ______________ 13The tri-service international JSF program is intended to replace U.S. Air Force F-16s and A-10s, U.S. Marine Corps AV-8Bs, and British Royal Navy and Royal Air Force Harriers, and in addition augment U.S. Navy F/A-18E/Fs.PDF Image | Military Jet Engine Acquisition Technology Basics and Cost-Estimating Methodology
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