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Re: [FlyRotary] Re: 3rd flight
Terry,
No. I haven't measured the pressure. I know that a manometer
is used to do this, but I'm not sure of the procedure, or even what the result
will tell me.
Steve
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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