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• W2316451867 abstract "All aspects of Department of Defense Science and Technology (DoD ST ultimately leading to improved warfighter readiness with reduced sustainment costs. FROM fflPTET TO VAATE For several years, driving force in military gas turbine engine development has been Integrated High Performance Turbine Engine Technology (fflPTET) Program. ThelHPTET program is a joint government and industry effort focused on developing technologies for more affordable, more robust, higher performance turbine engines for current and future aircraft and missile systems. The overarching goal of program is to double aircraft and missile propulsion performance, thrust to weight, while decreasing manufacturing and maintenance cost by 35% by 2003. As fflPTET program nears completion, a new initiative to address current needs of Department of Defense (DOD) is being developed. There are a number of needs which must be addressed. These include expanding altitude and Mach number envelope, improving performance and fuel efficiency, and reducing cost of ownership. In general, all these aspects represent robust and affordable propulsion systems. It is clear that affordability has become a number one concern to DOD. fflPTET has been working on affordability by providing for revolutionary new engine capability and has increased its focus on affordability over years because of recent engine maintenance problems and cost issues. Additionally, The Joint Strike Fighter (JSF) is an example of a modern program which 1 American Institute of Aeronautics and Astronautics (c)2002 American Institute of Aeronautics & Astronautics or Published with Permission of Author(s) and/or Author(s)' Sponsoring Organization. has opted for versatile, multi-use engine hardware as an avenue to reduce cost. What is needed for future is a truly revolutionary technology development approach focused on engine affordability. In order to develop a robust technology development plan, several questions must be answered. First, what are you trying to do? This means to identify specifically what are goals of program. The goals should be challenging, yet provide a reasonable opportunity for success. Additionally, there must be a method to measure your progress. The second question to be addressed is when do you need to complete program. What is pace necessary to support warfighter, industry, and other advocates for your technology? Third, what difference will achievement of goals make to your community? Aircraft payoffs due to new technology need to be quantified. With an eye on technology transition, payoffs need to be identified for both military and commercial market. And finally, what makes you believe that goals are achievable? From a technical standpoint, this means developing a link between Goals, Objectives, Technical Challenges, and Approaches, or as we refer to it as the GOTChA Process. From a financial standpoint, defining clear roadmaps with budgets is an essential element of planning for success. Answering these four questions can be quite challenging, especially when looking out 15 years, but when complete, a very comprehensive plan appears. By working through the GOTCha Process an initiative developed to address affbrdability of propulsion systems has emerged. With overarching goal of increasing affordability of propulsion systems by lOx, Versatile Affordable Advanced Turbine Engine (VAATE) initiative was born. VAATE AND ITS FOCUS AREAS What does focussing on affordability mean to propulsion community? In general, affordability is described as capability divided by cost. A metric was developed to relate this concept specifically to propulsion. We have defined this metric as thmst-to-weight divided by product of cost and specific fuel consumption, Equation 1. Cost is calculated as sum of development, production, and maintenance cost over life cycle of engine. ASS j L 1 r j Capability Weight Affordabihtylndex = —-——— ——-— Cost Cost" @default.
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• W2316451867 date "2002-01-14" @default.
• W2316451867 modified "2023-09-25" @default.
• W2316451867 title "Smart materials and structures for future aircraft engines" @default.
• W2316451867 doi "https://doi.org/10.2514/6.2002-80" @default.
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