Hi,
Long time lurker, hopefully A/Not the worst place to ask, and B/ Not a totally stupid question!?! :
Watching F15's at Lakenheath, I have been wondering for ages what the noise you can hear, a whistle or something (for want of a better description), just before the planes start to go down the runway?
Cheers,
Matt
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Question: Lakenheath, noise as jets depart?
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Re: Question: Lakenheath, noise as jets depart?
This noise? https://youtu.be/4GHEOlAX02c?t=18s
One forum says:
One forum says:
But not sure how accurate it is!The F-15's F-100 engines make a quite distinctive "whoop" noise caused by bleed air escaping from pressure relief valves in the pneumatic nozzle operating system, when the exhaust nozzle petals are opened up or closed down.
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Re: Question: Lakenheath, noise as jets depart?
Very accurate. That's exactly what it is. The same with the F-16 as well.EGVP wrote:This noise? https://youtu.be/4GHEOlAX02c?t=18s
One forum says:But not sure how accurate it is!The F-15's F-100 engines make a quite distinctive "whoop" noise caused by bleed air escaping from pressure relief valves in the pneumatic nozzle operating system, when the exhaust nozzle petals are opened up or closed down.
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Re: Question: Lakenheath, noise as jets depart?
Ah that's it at 1:15 on that clip. Guessing that's what is described as a 'Whoop'.
Thanks! Been one of those minor mysteries I've been wondering about ever since the first time at Lakenheath.
matt
Thanks! Been one of those minor mysteries I've been wondering about ever since the first time at Lakenheath.
matt
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