Most probably the end of a whip.
Charles Yeager was the first person ever to pilot an aircraft beyond the speed of sound.
Chuck Yeager
chuck yeager
The X-15
Jaqueline Cochran
Chuck Yeager
The sound barrier was first broken on October 14th, 1947.
The first time was on October 14th, 1947.
the bell x-1 is the first piloted airplane to fly faster than sound.
To break the sound barrier in the Earth's atmosphere, an object must travel at a speed of around 767 mph (1,235 km/h) at sea level. This speed is known as the speed of sound, or Mach 1.
mach 3 that means three times the speed of sound
charles yeager