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Re: [OM] IMG: Visitor from the Forties

Subject: Re: [OM] IMG: Visitor from the Forties
From: "Bill Pearce" <billcpearce@xxxxxxx>
Date: Wed, 17 Oct 2012 18:06:07 -0500
howl probably a resonant frequency in the exhaust system

-----Original Message----- 
From: Chris Barker
Sent: Wednesday, October 17, 2012 3:13 PM
To: Olympus Camera Discussion
Subject: Re: [OM] IMG: Visitor from the Forties

Yes, the Mustang's oil cooler is a very neat design; and I've always 
wondered if it is that component that makes the beautiful and distinctive 
howl when the aircraft reaches a certain speed.

Chris

On 17 Oct 2012, at 16:54, Ian Nichols <ian.a.nichols@xxxxxxxxx> wrote:

>> Thanks, Ian.
>>
>> It is hard to see from these images, but there is a circumferential 
>> opening
>> at the back of the cowling that provides a smooth exit path.
>>
>
>
> Thought it would be something like that, which is very neat and, if done
> right (and it probably is here) could even add a bit of thrust due to the
> heat input along the way - a bit like the famous P-51D oil cooler.

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