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Re: [FlyRotary] Re: 3rd flight
Steve,
The outlet only needs to be about 1.6 MAX times the inlet area to carry off
the heat. Have you measured the pressure difference across the high and
low pressure sides of the cowl to see what cooling potential you actually
have?
Do you know how to do that?
Terry Schubert
Central States Association
Newsletter
Editor
On 6/2/04 7:29 AM,
"Steve Brooks" <steve@tsisp.com> wrote:
Rusty,
I had started with the stock Cozy cowling, and modified
it for the rotary. I left the original opening at the rear wide open
to start with. I figured that if cooling was good, I could start
closing it off. You can see the aft opening in the attached photo.
It is probably 2-3 times the sum of all 3
scoops.
Steve
Steve, one possibility is that the
Ivo prop’s root section is creating back pressure in flight. Years ago some
canard flyers did testing in flight and found there was reverse flow around
the hub area. Ivo prop’s first 1/3section from the hub has very little pitch,
and the faster you go, it acts more like flat disk.
Bulent
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