论文部分内容阅读
空天安全是我国在21世纪保障国家安全的生命线。保证空天安全就需要发展自大气层至太空往返飞行的空天飞行器。为此,需要解决6项关键技术即:高超声速技术,高机动飞行技术,长距离空天飞行技术,高隐形技术,兼具超轻质量、高强韧、耐热和抗冲击性能的空天器结构技术,精确控制及可靠性技术。解决这6项关键技术需要突破7个核心科学问题即:高速飞行中可压缩湍流、转捩及其控制,高机动飞行中非定常分离、旋涡运动的机理及控制,高温、高速条件下气流的燃烧及热化学非平衡流动,结构和轻质材料的优化设计与抗撞击设计。智能结构和微系统的失效防范、主动控制与可靠性,电磁波、复杂介质和空气绕流的耦合效应,多尺度计算。
Air-space security is the lifeblood of our country’s safeguard of national security in the 21st century. To ensure the safety of space and air, it is necessary to develop a space shuttle that goes back and forth from the atmosphere to space. To do this, six key technologies need to be addressed: hypersonic technology, high maneuvering flight technology, long-range space flight technology, high stealth technology, spacecraft with super-light weight, high toughness, heat resistance and impact resistance Structural Technology, Precision Control and Reliability Technology. To solve these six key technologies need to break seven core scientific issues namely: high-speed flight compressible turbulence, transfer and control, unsteady separation in high-maneuver flight, the mechanism and control of vortex motion, high temperature, high-speed airflow Combustion and thermo-chemical non-equilibrium flow, optimum design of structural and lightweight materials and impact-resistant design. Failure prevention of smart structures and microsystems, active control and reliability, coupling effects of electromagnetic waves, complex media and air around the flow, multi-scale calculations.