transonic
Adjective Relating to or denoting a speed that is approximately equal to the speed of sound in air at sea level (about 1,225 km/h or 761 mph). This term describes the condition where an object's speed is close to Mach 1, transitioning from subsonic to supersonic speeds or vice versa.
The adjective "transonic" is used to describe the speed of an object, typically an aircraft or projectile, or the aerodynamic phenomena that occur at that specific speed range. * The aircraft entered the transonic regime, experiencing increased drag and control challenges. * Engineers must carefully design wings to handle transonic airflow, which can be highly unstable. * The transonic speed of the experimental jet was carefully monitored.
- Transonic Flow: A technical term in fluid dynamics describing airflow that is partly subsonic and partly supersonic around an object.
- Studying transonic flow is critical for designing efficient modern aircraft.
- Transonic Region/Regime: Refers to the specific range of speeds, typically between Mach 0.8 and Mach 1.2, where transonic effects are dominant.
- The missile accelerates through the transonic region very quickly.
- Subsonic (Adjective): Of or denoting a speed less than that of sound.
- Supersonic (Adjective): Of or denoting a speed greater than that of sound.
- Hypersonic (Adjective): Of or denoting a speed greatly exceeding that of sound (typically above Mach 5).
- Sonic (Adjective): Relating to or using sound waves; or, specifically, denoting the speed of sound (e.g., ).
- Sonic (when specifically referring to speeds near Mach 1)
While "transonic" and "sonic" are sometimes used interchangeably in casual contexts (as in the reference example "a sonic boom" can occur in the transonic regime), there is a technical distinction: * Sonic precisely means "at the speed of sound" (Mach 1). * Transonic describes a range of speeds surrounding Mach 1, where both subsonic and supersonic conditions are present. A "sonic boom" is generated when an object accelerates through the transonic range to supersonic speeds.
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(of speed) having or caused by speed approximately equal to that of sound in air at sea level
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a sonic boom
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