美国能源部劳伦斯·利弗莫尔国家实验室提出了一种高超音速飞行器的方案。这种飞行器被称作“超高飞”(HyperSoar)飞行器。它在大气层上部“跳跃”式飞行,能在2小时之内把有效载荷运送到地球表面的任何地点。它还能用作两级轨道发射器的第一级。目前该飞行器仍需要在几个方面进行技术完善,但能在3年左右研制出验证机。 The United States Department of Energy Lawrence Livermore National Laboratory proposed a hypersonic vehicle program. This aircraft is called a HyperSoar. It “jumps” in the upper atmosphere to carry payloads to anywhere on Earth’s surface within two hours. It can also be used as the first stage of a two-stage orbital launcher. At present, the aircraft still need to improve the technology in several aspects, but in about 3 years to develop a certification machine.