1) Having Mach speed 2) Sonic
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https://www.crosswordclues.com/clue/transonic
1) Sonic
Found on
https://www.crosswordclues.com/clue/transonic
Most modern jet powered aircraft are engineered to operate at transonic air speeds. Transonic airspeeds see a rapid increase of drag from about Mach 0.8, and it is the fuel costs of the drag that typically limits the airspeed. Attempts to reduce wave drag can be seen on all high-speed aircraft; most notable is the use of swept wings, but another c...
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http://en.wikipedia.org/wiki/Transonic
Flight in the range between the onset of compressibility effects (around Mach number, M, of 0.7) and the establishment of fully supersonic flight conditions (around Mach number of 1.4). While the aircraft itself may be traveling less than the speed of sound, the air going around the aircraft excee...
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http://www.daviddarling.info/encyclopedia/T/transonic.html
In ultrasound, describes a region of a relatively unattenuating medium. A distinction should be made between a transonic region and an acoustic echo. ... Origin: trans-+ sonic ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: tran-son′ik Definitions: 1. In ultrasound, describes a region of a relatively unattenuating medium. A distinction should be made between a transonic region and an acoustic echo.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=93332
A range of speed between about 0.8 and 1.2 times the speed of sound in air.
Found on
https://www.encyclo.co.uk/local/20687
No exact match found.
