Is that the reason they are so loud?
2006-10-09 19:40:43 · 5 answers · asked by MrZ 6 in Cars & Transportation ➔ Other - Cars & Transportation
Yep they do exceed the speed of sound at the tips.To the other answerers that reckon helicoptors dont have wings,a plane has fixed wings and a helicoptor has rotary wings but still wings.
2006-10-09 19:57:24 · answer #1 · answered by frank m 5 · 1⤊ 1⤋
Helicopters don't have wings. They have blades. And yes, the noise is caused by the blade-vortex interaction. This occurs when a rotor blade passes within a close proximity of the shed tip vortices from a previous blade. This causes a rapid, impulsive change in the loading on the blade resulting in the generation of highly directional impulsive loading noise.
2006-10-10 02:49:58 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Actually cheech The Bvi Noise isnt the noise of the blade going supersonic BVI actually occurs when a rotor blade passes within a close proximity of the shed tip vortices from a previous blade.
More of the noise is created by HSI noise is caused by transonic flow shock formation on the advancing rotor blade,.
2006-10-10 03:32:40 · answer #3 · answered by Thomas w 1 · 1⤊ 0⤋
The tips of the blades do.
2006-10-10 02:46:54 · answer #4 · answered by syrious 5 · 1⤊ 0⤋
helicopters do not have wings
2006-10-10 02:43:08 · answer #5 · answered by John B 4 · 0⤊ 0⤋