Ahh! wrong plenum. That makes more sense as I would expect induction air
downstream of the turbo to be in the high 70's C.
Thanks for the clarification.
Nigel
On 24/02/2014 09:16, David Joyce wrote:
> <davidjoyce@doctors.org.uk>
>
> Nigel, Yes I have a 914' but I am talking about the space fed
> directly from a NACA inlet which gathers the air before it enters the
> turbo. Like all the cowling inlets it will be pressurised by the
> slipstream/propwash No doubt post turbo the temperature will be higher
> still - which is why 914s don't need carb icing protection.
> Regards, David
>
> "nigel_graham@m-tecque.co.uk" <nigel_graham@m-tecque.co.uk> wrote:
>> <nigel_graham@m-tecque.co.uk>
>>
>> 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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