超高速飞行器是指飞行马赫数大于4以上的飞行器。由于中低空空气密度大,飞行器高速飞行时空气与其机体产生的气动加热问题难于解决,所以其一般只在高空或高高空(飞行高度大于30公里)飞行。在这种高空高速工作状况下,燃气涡轮发动机己失去优势,必须依靠其他动力形式或与其他动力形成组合动力。超然冲压发动机这是一种燃料可在超声速气流中 A super-high-speed aircraft means an aircraft with a flying Mach number greater than 4. Due to the density of mid-low altitude air, the problem of aerodynamic heating caused by air and its airframe during high-speed flight is difficult to solve. Therefore, it usually only operates at altitude or at high altitude (flight altitude greater than 30 km). Under such high altitude and high speed working conditions, the gas turbine engine has lost its advantage and must rely on other power forms or form a combined power with other power sources. Transcendental ramjet engine This is a fuel available in supersonic airflow