supersonic speed
Refers to speeds exceeding the speed of sound (Mach 1). Commonly used in technical and news contexts.
超音速で飛ぶ旅客機の開発が進められている。
Development of a passenger aircraft that flies at supersonic speed is underway.
その戦闘機は超音速に達した。
The fighter jet reached supersonic speed.
That fighter jet can fly at supersonic speed.
The rocket reached supersonic speed within seconds.
supersonic airliner; supersonic passenger aircraft
supersonic transport; SST