1992年法国制订了一项4年开发计划,准备投资9500万美元研制超燃冲压发动机,并拟定在1996年对缩比发动机进行地面试验,目前这一工作一直在顺利进行。实际上,已签订的合同均属于吸气式高超音速推进系统研制技术规划(PREPHA)中超燃冲压发动机研究范围。有关试验设备、飞行器以及推进系统方面的大部分合同都已签订,只有材料和数字仿真 In 1992, France formulated a four-year development plan to invest 95 million U.S. dollars in the development of scramjet engines. It plans to conduct a ground test of the scaled-down engine in 1996 and this work has been proceeding smoothly. In fact, the signed contracts are all covered by the scramjet research program in the PREPHA (Aspirated Hypersonic Propulsion Systems Research and Development Program). Most of the contracts for test equipment, aircraft and propulsion systems have been signed except for materials and digital simulations