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法国正在致力于发展高超声速吸气式推进系统和推阻平衡预测能力所需要的技术。通过地面试验研究完成其大部分技术开发,目前正在对燃烧室进行攻关研究,以确保燃烧效率和结构热力强度满足要求。另一方面,为了掌握推阻平衡技术,必须进行飞行试验。因此,MBDA和ONERA正在推进LEA飞行试验计划。此计划始于2003年1月,准备在后续几年内完成马赫数4到8的若干次飞行试验。在2009年中期,通过关键设计评估完成了LEA飞行器推进系统的验证。将确定在2011年春季通过一系列自由射流试验验证飞行器的推阻平衡。此外,系统地开展了可重复使用运载器和高速民用飞行器的可行性和可实现的工作性能研究。
France is working on the technologies needed for the development of hypersonic aspirated propulsion systems and the ability to predict the balance of thrust and drag. Most of the technology development has been completed through ground test studies and research on the combustion chamber is currently under way to ensure that combustion efficiency and structural thermal strength meet the requirements. On the other hand, flight tests must be conducted in order to master the thrust-and-thrust balancing technique. As a result, MBDA and ONERA are moving forward with the LEA flight test program. The plan began in January 2003 and is scheduled to complete several flight tests of Mach 4 to 8 within the next few years. In mid-2009, the LEA aircraft propulsion system validation was completed through a critical design assessment. It will be determined that in the spring of 2011 aircraft thrust and drag balance will be verified through a series of free jet tests. In addition, a systematic and feasibility study of the feasibility and achievable performance of reusable vehicles and high-speed civil aircraft was conducted.