> >  > >  > >  > >  > >  > > Jerry Hey wrote:

 >>  >>  >>  >>  >>  > >
 >>  >>  >>  >>  >>  > >   Paul,   What do you think of this louver lay
 >>  >>  >>arrangement?  Jerry
 >>  >>  >>  >>  >>  > >
 >>  >>  >>  >>  >>  >
 >>  >>  >>  >>  >>  > That ought to work great.
 >>  >>  >>  >>  >>  >
 >>  >>  >>  >>  >>  > Paul Lamar
 >>  >>  >>  >>  >Russell Kent wrote:
 >>  >>  >>  >>  >>
 >>  >>  >>  >>  >>  This image did not get through cleanly.
 >>  >>  >>  >>  >>
 >>  >>  >>  >>  >>  Russell Kent
 >>  >>  >>  >
 >>  >>  >>  >>  >I got it OK but here it is again.
 >>  >>  >>  >>  >
 >>  >>  >>  >>  >BTW Jerry you need the sides of those flaps closed too.
 >>  >>  >>  >>  >
 >>  >>  >>  >>  >Paul Lamar
 >>  >>  >>  >
 >>  >>  >>  >>  Yes, I am aware of that.   When are you setting up
 >>your test rig?
 >>  >>  >>  >>  Any chance you could test my rad with louvers and
 >>plenum.   I can
 >>  >>  >>  >>  bring it down around the end of Nov or beginning
of Dec.   Jerry
 >>  >>  >>  >
 >>  >>  >>  >I hate to commit to anything now as I have a really full plate.
 >>  >>  >>  >If you come down and help I think we could do it in one day.
 >>  >>  >>  >
 >>  >>  >>  >Can you build the box before you come down? Do you
have a truck?
 >>  >>  >>  >Perhaps your rad will fit my test box.
 >>  >>  >>  >
 >>  >>  >>  >Paul Lamar
 >>  >>  >
 >>  >>  >>  Paul,  you can count on my help.  I too am booked up until
 >>the end of
 >>  >>  >>  Nov. Any time after that is good for me.  If it takes
one day or two
 >>  >>  >>  that is fine.  Jerry
 >>  >>  >
 >>  >>  >OK I was planning on taking some more pressure measurements so that
 >>  >>  >will be fine. If you could build the box up there using 3/16
 >>inch copper
 >>  >>  >tubing for the velocity taps that would save a lot of time.
 >>  >>  >
 >>  >>  >Paul Lamar

 >>  >>  >  I will need an idiot proof drawing.  Jerry
 >
 >>  >OK :-) What are the exact dimensions of your rad core? Just the core!
 >>  >Are you planning on mounting it long ways?
 >>  >
 >>  >Paul Lamar

 >>  13 inches x 18 inches  Mounted long way.   Jerry

 >OK That means of course you are going to need a space
 >above the rad core at its leading edge of (235 *.3) /13 or
 >5.4 inches. Do you have room under the oil pan for that?
 >
 >If you mounted it sideways you would only need 235 * .3 /18
 >or 3.9 inches.
 >
 >Still want to mount it long ways?   Paul Lamar

 If I were starting over I would set the radiator sideways, however,
 that is no longer an option.  No, I cannot  achieve the optimum
 opening at the leading edge of the core.  The maximum available is
 4.75 inches.  At the leading edge of the rad header tank, the plenum
 opening is 5.188 inches.   May not be optimum but it is very good.
 I suspect that a MUCH smaller opening will prove to be adequate as

 > long as a good pressure drop through the radiator is achieved.  If
 > the louvers are efficient, no problem.  If they are not, then no
 > intake plenum regardless of size or shape will make a damn bit of

 difference.  Just an uneducated opinion, mind ya.    Can the test box
 be made so that different size intakes can be tried?

 Jerry

OK we will build the box with 4.75" by 18" opening and see
what we get in the way of airflow. There may be a way of cheating
when you do an actual 3D duct.

Drawing later.


Paul Lamar

The opening should be 4.75" x 13".   Jerry

Right! I am paying the bills and it is hard for me to concentrate
when I am doing that. I HATE paying bills :-)

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.