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系统总结了中国空气动力研究与发展中心在吸气式高超声速技术研究方面取得的主要进展,包括:试验设备、超燃冲压发动机、数值模拟以及机体/推进一体化飞行器。CARDC经过十多年的努力,建成和改造了三种类型的高焓设备:脉冲式燃烧加热风洞、连续式燃烧加热风洞和电弧风洞。开展了多种尺度的超燃冲压发动机的直连式和自由射流式试验,获得了发动机的基本性能及其随油气比、喷孔位置等的变化规律。通过连续式和脉冲式风洞试验结果对比,表明工作时间大于100 ms的脉冲式燃烧设备是开展发动机基本性能研究的经济、高效试验手段。成功研制了三维大规模并行数值模拟软件平台AHL3D并广泛应用于发动机研究。在Φ0.6 m风洞中,完成了1.5 m带动力飞行器试验,获得了发动机工作和不工作状态下的飞行器推阻及升力特性。同时提出了地面试验、CFD和飞行试验三者综合研究分析的重要性。
The main achievements of the China Aerodynamic Research and Development Center on the research of aspiration hypersonic technology are summarized. These include: test equipment, scramjet, numerical simulation and airframe / propulsion integrated aircraft. After more than a decade of hard work, CARDC has built and retrofitted three types of high-enthalpy equipment: pulsed combustion heating wind tunnels, continuous combustion heating wind tunnels and arc wind tunnels. The direct-coupled and free-jet tests of scramjet at various scales were carried out. The basic performance of the engine and its variation with the gas-gas ratio and the position of the nozzle were obtained. By comparing the results of continuous and pulsed wind tunnel tests, it is shown that pulsed combustion equipment with operating time greater than 100 ms is an economical and efficient test method for studying the basic performance of engine. Successfully developed a large-scale three-dimensional parallel numerical simulation software platform AHL3D and widely used in engine research. In the Φ0.6 m wind tunnel, a 1.5 m powered aircraft test was completed, and the thrust resistance and lift characteristics of the aircraft under engine working and non-working conditions were obtained. At the same time, the importance of comprehensive research and analysis of ground test, CFD and flight test is put forward.