REFLECTOR: Air intake

[Chris Barber]

The book "How to Cool Your Wankle" has specific info on this topic including Base K&W diffuser as well as wedge shaped and why NACA's are not the best choice (I diminished the NACA information and gmhad major cooling issue until I went to a wedge). 

While written with Dr Wankles rotary in mind the info applies to other liquid cooled engines. It did help me focus knowledge. 

It is available from the author, Paul Lamar. He is set in his ways but continually tries to be helpful. His website has a lot of rotary info that may translate well to other liquid cooled engines as well and has a list serve that is very active and moderated if mostly theoretical and a bit political. Www.rotaryeng.net

Chris

Sent from my iPhone 4

On Jun 22, 2012, at 9:48 AM, "Ron N VelocityXLFG" <velocityxl at fastmail.fm> wrote:

> No not heard of them
> On 6/22/2012 9:14 AM, Al Gietzen wrote:
>> Ron;
>> 
>> It depends on a number of factors; including fin density and thickness of
>> the core. For Velocity speeds; typically a ratio of cooler face area to duct
>> entrance area of 4-5 is good for core thickness of 2-3 inches. For thicker
>> core, say 3.5", maybe use 5.5.
>> 
>> The shape of the diffuser section (duct from entrance to cooler) is
>> important as well to avoid turbulence in the duct and get best pressure
>> recovery. Are you familiar with the K & W bell shape diffuser?
>> 
>> Al
>> 
>> -----Original Message-----
>> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>> Behalf Of Ron N VelocityXLFG
>> Sent: Friday, June 22, 2012 6:05 AM
>> To: Velocity Aircraft Owners and Builders list
>> Subject: REFLECTOR: Air intake
>> 
>> 
>> Seems their was some formula for the size of the air opening to the size
>> of the radiator. Does anyone have this formula. I am going to make a ram
>> air intake for my oil cooler and do not want to make it to big or to small.
>> 
>> Ron
>> _______________________________________________
>> To change your email address, visit
>> http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>> 
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> 
> 
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
> 
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html