Chen, Shih-Yuan Formerly, Department of Environmental Sciences, Rand Corporation, Santa Monica, California.
Last reviewed:December 2019
- Conditions at high speed
- Vehicular trajectories
- Related Primary Literature
- Additional Reading
Flight at speeds much above the local velocity of sound. In the span of a few years speeds of aircraft, missiles and spacecraft increased tremendously, from far less than the speed of sound (subsonic) to speeds required for orbiting or escape from the Earth. By convention, hypersonic flight starts at about Mach 5 (five times the speed of sound) and extends upward in speed indefinitely. A more precise definition, attributed to T. von Kármán, states that hypersonic flight starts when the cross-flow Mach number (or Mach-number component perpendicular to the longitudinal axis) becomes 1 or greater. In any case, hypersonic flight refers to atmospheric flight at hypersonic speed when the characteristics of the flow field about the body are strongly influenced by thermal effects. See also: Aerothermodynamics
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information