Introduction
摘要
Hypersonic airbreathers in the context of this book are winged and also non-winged hypersonic flight vehicles with either ramjet or scramjet (supersonic combustion ramjet) propulsion. This of course implies turbojet propulsion for the domains of subsonic, transonic and supersonic flight Mach numbers. The exceptions are the launch from a carrier aircraft and/or with a booster rocket used in the first stage of flight.