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26 Military Jet Engine Acquisition has been the Integrated High Performance Turbine Engine Technol- ogy (IHPTET) program. IHPTET is a joint program of the U.S. Air Force, Navy, Army, Defense Advanced Research Programs Agency (DARPA), National Aeronautics and Space Administration (NASA), and industry (Rolls-Royce’s Allison Advanced Development Com- pany [AADC], General Electric Aircraft Engines, Honeywell, Pratt & Whitney, Teledyne Continental Motors, and Williams International). IHPTET is focused on developing technologies for more-affordable, more-robust, and higher-performance turbine engines. IHPTET’s long-standing “challenge” to “double propulsion capability” refers to a top-level goal of doubling the thrust-to-weight ratio of fighter en- gines over the original design of the F119 engine, the most advanced engine in military service. Because many of the technologies that IHPTET develops have both military and commercial applications, all of the program’s partici- pants contribute to the development funding of this program. (See St. Peter [1999, p. 383] for a good overview of the history, goals, and achievements of the IHPTET program since its inception in the 1980s.) IHPTET is scheduled to be completed in 2005 and will be fol- lowed by the Versatile Affordable Advanced Turbine Engine (VAATE) Initiative. VAATE’s focus will include propulsion capability (thrust- to-weight ratio and SFC) but will also combine those metrics with engine affordability (development, production, and maintenance costs) metrics in a new metric called the Capability/Cost Index (CCI) (Jay and Gahn [2000], pp. 12-16).1 In addition, the NASA Glenn Re- search Center, in parallel and in coordination with IHPTET, is spon- soring the Ultra Efficient Engine Technology (UEET) program, which is seeking technical advancements to improve propulsion perfor- mance and efficiency and reduce emissions. The engine development community is also collaborating on a num- ber of initiatives to reduce the cost of engines by improving the ma- terials and manufacturing systems and processes. In 1995, the Air Force implemented the Engine Supplier Base Initiative (ESBI). ESBI’s goal is to improve engine affordability through cost avoidance at and between every level of the “supply chain”—government, manufac- ______________ 1The details of the CCI metric, as well as the entire VAATE program, were still being finalized as of this writing.PDF Image | Military Jet Engine Acquisition Technology Basics and Cost-Estimating Methodology
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