If I remember correctly, isn't 'DJ powered by a 914? If so, the plenum
will be fed with heat sinked (sunk?) air fresh from a blisteringly hot
turbo. Once Mr. Boyle has added his two cents, I'm surprised that the
difference between plenum and OAT is only 8c!
Nigel
On 23/02/2014 12:04, David Joyce wrote:
> <davidjoyce@doctors.org.uk>
>
>
> Alan & rowland, problem with anywhere subject to ram air
> pressurization is that it will give an appreciably higher temp than
> true OAT.(Boyle & his law). I have an airbox temp sensor in my air
> plenum and also an OAT sensor in the wing root just in front of the
> flap control slot and the two give significantly different temps once
> the plane is flying, if I remember rightly by something like 8C.
> Regards, David Joyce, G-XSDJ
>
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