[20220113]IF11778_超音速运输的潜在军事作用.pdf

https:/crsreports.congress.gov Updated January 13, 2022Potential Military Roles for Supersonic TransportsA new generation of supersonic (faster than the speed of sound in level flight, also called Mach 1) passenger aircraft is now under development. Using “low-boom” technology developed through NASA research to minimize sound signatures on the ground, advanced engines, and alternative fuel concepts, these new supersonic transports (SSTs) advertise the ability to fly over populated areas with minimal disruption, cruise more economically, and avoid some of the potential negative environmental effects of carbon-based fuels in high-altitude flight. These new aircraft have attracted interest and some investment from the U.S. military, and have on occasion been proposed for military missions by their developers. The potential roles differ with the size and capabilities of each aircraft. History Aircraft first went supersonic in 1947. Since then, two supersonic transport aircraft (SSTs) served in commercial airlines. The Soviet Tupolev Tu-144 flew from 1968 to 1999, although it was only in commercial service (with Aeroflot) for three years. The Anglo-French Concorde flew from 1969 to 200