REFLECTOR: Water Cooling
Fred Vandeman
fvandeman at comcast.net
Wed Oct 13 10:35:29 CDT 2004
Al,
I'd love to have the spreadsheet and anything additional you could
provide re: oil cooling, radiator and placement for 3-rotor.
Fred
On Wednesday, October 13, 2004, at 01:07 AM, Al Gietzen wrote:
> I’ll just add one note of caution regarding the cooling air intake for
> the liquid cooled application. NACA scoops, in general, do not
> provide the efficiency and pressure recovery of a ram scoop, and,
> although adequate for air cooling where there are relatively widely
> spaced fins, may not be adequate for the more dense matrix of a
> typical efficient radiator or oil cooler design. Not saying it won’t
> work, but be aware that in the original papers on the NACA the authors
> state that they are not recommended for heat exchanger application.
>
>
>
> If you are interested I can send you an XL spreadsheet for designing
> the optimum scoop inlet diffuser duct shape according to K&W.
>
>
>
> Photo of my version of armpit scoop for in-cowl radiator, and custom
> cowl for 3-rotor engine is attached. I also have a second radiator
> and an oil cooler in the two wing roots.
>
>
>
> Al
>
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]
> On Behalf OfJoe
> Sent: Monday, October 11, 2004 8:10 PM
> To: reflector at www.tvbf.org
> Subject: REFLECTOR: Water Cooling
>
>
>
> I will shortly be working on installing a Renesis (4th generation
> Mazda 13b) engine in my 173. I am looking for any suggestions on
> installing water and oil cooling on a 173. Any and all experiences of
> what to do and what not to do are appreciated.
>
>
>
> For those who have used Naca scoops (air cooled), where does rain
> water run off? In the engine compartment? If so has anyone had
> problems associated with water in the engine compartment, especially
> in the cold weather?
>
>
>
> On a slightly different subject, is the small fresh air scoop adequate
> especially in hot summer climates? I ask because I am trying to
> decide what if anything I should do with the already installed Naca in
> the nose for oil cooling. Due to the oil cooler size and other
> considerations I will not be putting the oil cooling in the nose.
> Before I glass it over I was wondering if I should use it as another
> source of fresh air in the hot weather.
>
>
>
> Thanks in advance for any advise,
>
> Joe
>
>
>
>
>
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