Fighter Plane
Posted in Aircraft Model by admin
on October 5, 2010
Why does the A-10 Thunderbolt (Fighter Plane) make that strange buzzing noise from the front?
That strange airy buzzing noise... you can hear it on some of the a-10 footages on youtube.
Strange buzzing noise from the engines or aerodynamics, NOT the GAU-8 cannon.
It is the tips of the turbofan blades breaking the sound barrier. Unlike most military aircraft, the A-10 uses podded high bypass turbofans similar to those found on medium to large business jets. Since the fan air is much slower than the core air and muffles it, you don't hear the exhaust as much. You can hear the same sort of sound off of modern airliners, but their engines are much larger, so the sound is a lower pitch.
Other fighter jets (like the F-18) use low bypass turbofans that are buried deep in the fuselage so you can't hear the fan. Also they mix the small amount of fan air with the hot exhaust and shoot it out one nozzle per engine, giving that WHOOOSHH sound.
You can hear it clearly in this video. And don't tell me he's taking off with the cannon firing. It can only fire for 17 seconds and makes a lot of smoke.
http://youtube.com/watch?v=bx4f7AZsiGs&mode=related&search=
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