Mailing List flyrotary@lancaironline.net Message #11855
From: Jarrett Johnson <jjjohnson@accesscomm.ca>
Subject: Re: [FlyRotary] Re: oil coolers
Date: Thu, 30 Sep 2004 15:40:29 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
That looks wonderful, Al, BUT.... I have to wonder..  any loss of lift or disruption  with the use of that arrangement? Anyone else doing it that way or are you the first that you know of..  Finally... temperature issues. I remember when we did post cure on the airframe on a hot july day, we coated it in black plastic in the yard. I dont recall seeing 200 degree F temps... what are you using to keep the foam near the radiators from approaching that temp and post-curing additionally?
 
I LIKE what I'm seeing but I am concerned too (I plan someday to build my own, so I don't have to mooch off Chris all the time for airplane priveledges)
 
Dave
 
 
 
 
I to have been wondering about this. I'm actually going to be running a similar set up through a CFD program here in the next couple weeks [ time permitting] So I should get a pretty good idea as to its effects. My major question is how does/would/will it cool on the ground? Esp. in  a pusher configuration.. It will be interesting to hear once Al gets it flying. My configuration would be a bit different as I'm going to try and put it right infront of the flap line.. and using it something like a SLOT in the back of the wing.. the induction will be located a bit farther ahead.. near the 30-40% chord. As far as the way pressure distribution is concerned, its one of the best set-up's I can think of. It works harder in the climb because of the higher delta P over/under the wing [however it may effect climb rate a bit] and works less during cruise where you'll need less cooling..  All theory at this point..
 
Jarrett Johnson
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster