The Global Hypersonic Race

... skipping stone along the water surface, such a vehicle can increase its flight range by several times. The second type is a scramjet-powered vehicle, which can only fly in the atmosphere because its engine needs oxygen. The third type is a quasi-ballistic ... ... hardened command posts and critical facilities. Glide vehicles (the Russian Avangard; the U.S. Lockheed Martin Falcon, HIFiRE and HSSW/TBG [High-Speed Strike Weapon/Tactical Boost Glide]; and the Chinese WU-14/DF-ZF) are primarily intended as nuclear strike ...