✏️A sonic boom the is the sound associated with shock waves through the air created whenever an object travels faster than the speed of sound.
✏️The wave is heard on the ground as a clap of thunder .
✏️Sound travels in the form of waves which are emitted outwards from its source.
✏️When the source of sound is moving the successive waves in front of the object get closer together, and the ones behind it spread out.
✏️As long as the source of the sound keeps moving slower than the speed of sound itself, this source remains nested within the sound waves that are travelling in all directions.
✏️When an aircraft travels at supersonic speed, the field of sound waves moves to the rear of the craft. ✏️A stationary observer thus hears no sound when a supersonic flight approaches, since the sound waves are at the rear of the latter.
✏️At such speeds, both newly created as well as old waves, are forced into a region at the aircraft ‘ Mach cone ’ the Earth ’ s rear called a , which extends from the craft and intercepts As long as an airplane travels at Mach generate a continuous All those in sonic boom. 1 or faster, it will a narrow path below the airplane's flight path will be able to hear the sonic boom as it passes overhead. This path is known as the “ 3 October 2020 boom carpet."
How loud is Sonic Boom from the jet?
✏️Sonic booms generate enormous amounts of sound energy, sounding much like an explosion; typically the shock front may approach 100 megawatts per square meter, and may exceed 200 decibels.
✏️The boom is not deadly but it can cause some severe damage to the body and hearing if you happen to be at the exact spot of the boom. The boom can and has caused a lot if damage to homes in the past, thus the restriction for such flights over populated areas.
✏️When an object travels in fast speed, it creates a sonic boom. Frequent exposure will cause deafness.
“Double” Booms
All aircraft generate two cones, at the nose and at the tail. They are usually of similar strength and the time interval between the two as they reach the ground is primarily dependent on the size of the aircraft and its altitude.
While some people on the ground may perceive the sound as a single sonic “boom,” many sonic booms produced from NASA’s research flights are easily heard as distinct “double” booms, similar to what was created by the space shuttle. This is the result of the two separate cones generated, at the nose and the tail of the aircraft.📝Problems due to Sonic Boom ✏️When such aircraft fly at a low altitude, the sonic boom can become intense enough to cause glass to crack health hazards.
✏️or cause Sonic booms due to large supersonic aircraft can be particularly loud and startling , tend to awaken people, and may cause minor damage to some structures.
✏️They led to prohibition of routine supersonic flight over land.
✏️First to break the sound barrier! In 1947 , the American military pilot Chuck Yeager became the first to breach the sound barrier, flying the Bell Xkmph.
Typical overpressure of aircraft types are:
- SR-71: 0.9 psf, speed of Mach 3, 80,000 feet
- Concorde SST: 1.94 psf, speed of Mach 2, 52,000 feet
- F-104: 0.8 psf, speed of Mach 1.93, 48,000 feet
- Space Shuttle: 1.25 psf, speed of Mach 1.5, 60,000 feet, landing approach
👉Sukhoi SU -- 30MKI --Mach 2.3
👉Mirage 2000-mach 2.3
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