NASA's High-Speed Research Program: An Introduction and Status Report 901923
Studies have indicated that, with sufficient technology development, future high-speed civil transport aircraft could be economically competitive with long-haul subsonic aircraft. However, concerns about atmospheric pollution, noise and sonic boom present private sector disincentives. The High-Speed Research Program addresses resolution of these environmental issues, and will place the U.S. in a position to make informed decisions on continuing technology development and eventual industry commitment to aircraft production. The program builds on NASA's extensive expertise in upper atmosphere research and experience in emissions, noise and sonic boom reduction, as well in other relevant aircraft and engine technologies.