John Ridgefield
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The sound barrier or sonic barrier is the large increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound. When aircraft first approached the speed of sound, these effects were seen as constituting a barrier, making faster speeds very difficult or ...
Sound barrier, sharp rise in aerodynamic drag that occurs as an aircraft approaches the speed of sound and that was formerly an obstacle to supersonic flight. If an aircraft flies at somewhat less than sonic speed, the pressure waves (sound waves) it creates outspeed their sources and spread out.
- The Editors of Encyclopaedia Britannica
Sep 30, 2017 · The Bell X-1 broke the sound barrier with Col. Chuck Yeager at the controls on Oct. 14, 1947. (Image credit: NASA) Four rocket engines propelled the X-1, and it was built to absorb 18 times the...
The Sound Barrier is a 1952 British aviation drama film directed by David Lean. It is a fictional story about attempts by aircraft designers and test pilots to break the sound barrier. It was David Lean's third and final film with his wife Ann Todd but it was his first for Alexander Korda 's London Films, following the break-up of Cineguild.
May 4, 2023 · A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution.
Feb 16, 2017 · The next barrier for air travel looks hyper: hypersonics, a regime that begins at Mach 5, five times the speed of sound, or 3,300 miles per hour (5,311 kph) at altitude. Langley’s work with hypersonics was spurred in part in the 1940s by the post-war discovery of a German Mach 5 wind tunnel.
Mar 11, 2002 · Any discussion of what happens when an object breaks the sound barrier must begin with the physical description of sound as a wave with a finite propagation speed.
