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28 Military Jet Engine Acquisition COMPONENT AND RELATED TECHNICAL ADVANCEMENTS Jet engine technology improvements continue to influence engine life-cycle costs (costs associated with development, production, and operation and support). Enhanced performance naturally comes at the price of increased costs. However, the stated affordability re- quirements of the Department of Defense (DoD), along with com- petition from foreign engine manufacturers, are demanding that the industry focus on life-cycle cost reductions. This new focus has re- sulted in government and industry efforts to reduce engine produc- tion costs and enhance engine manufacturability, maintainability, and durability. Efforts to improve many of the traditional jet engine technology areas will continue, including efforts in advanced aero- dynamics, component cooling techniques, materials development, and computational modeling and simulation of structural compo- nents, flow, and combustion. Several other technologies are being developed for or are being inte- grated into major programs for the first time. The following subsec- tions briefly describe several relatively new engine technologies and how they will likely affect costs associated with jet engine perfor- mance over the next several years. This list of technologies, while not intended to be comprehensive, highlights many key technologies that program managers and cost analysts are likely to encounter over the next two decades when examining options for military aircraft engines. Low Observables The Air Force has demonstrated clear advantages in operating com- bat aircraft without being detected. An aircraft engine, without the proper precautions, can produce observable “signatures” including strong radar returns, infrared emissions, noise, and visual signatures. The engine production community has developed techniques for partial suppression of these signatures (i.e., low observability) and will continue to explore new approaches in this area. In general, in- corporating techniques to create low observable (LO) aircraft adds cost throughout the engine’s life cycle. For example, developing and producing LO components requires special materials and shaping of the aircraft, maintaining LO components requires special handlingPDF Image | Military Jet Engine Acquisition Technology Basics and Cost-Estimating Methodology
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