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LAPCAT (Long-Term Advanced Propulsion Concepts and Technologies) was a 36-month European FP6 study to examine ways to produce engines for a Mach 4-8 hypersonic speed aircraft. The project ended in April 2008. It was funded by the European Commission research and development fund (rather than ESA), and cost 7 million euros.〔(【引用サイトリンク】title= LAPCAT – Long-Term Advanced Propulsion Concepts and Technologies )〕 LAPCAT II, a 10 million euro, four-year, follow on project, started in October 2008.〔 The study aims to refine some of the results of the first study "allowing the definition of a detailed development roadmap" of a Mach five vehicle. ==Objectives== Two major technologies were to be considered: * ram-compression, which needs an additional propulsion system to achieve its minimum working speed. * active compression, which has an upper Mach number limitation but can accelerate a vehicle up to its cruise speed. Key objectives were the definition and evaluation of:〔 * different propulsion cycles and concepts for high-speed flight at Mach 4 to 8 such as turbine-based and rocket-based combined cycles * critical technologies for: * * integrated engine/aircraft performance * * mass-efficient turbines and heat-exchangers * * high-pressure and supersonic combustion experiments * * modelling Intended results were:〔 * definition of requirements and operational conditions for high-speed flight at system level * dedicated experimental data-base specific to high-speed aerodynamics for supersonic and high-pressure combustion and flow phenomena. * setting-up and validating physical models supported by numerical simulation tools to address supersonic and high-pressure combustion, turbulence and transition phenomena. * feasibility study of weight performance turbine and heat exchanger components 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「LAPCAT」の詳細全文を読む スポンサード リンク
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