From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: Flight #3 or Glasair SuperIIRG
Date: Fri, 6 Sep 2019 06:23:50 +0800
References: <list-12927386@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Message-Id: <B2EC54E0-8384-4B17-8328-D12F5B9A94AE@gmail.com>

Thanks very much Jeff, most helpful.
Do you have a volume per minute figure of water you sprayed to get that =
cooling?
Was your spray pattern very fine as far as atomisation?
=20
Steve

> On 6 Sep 2019, at 1:42 am, Jeff Whaley jwhaley@datacast.com =
<flyrotary@lancaironline.net> wrote:
>=20
> Hello Steve, yes I have experience with using water spray.  In my =
configuration (Chubby Cubby, 80-90 mph climb) water spray would bring my =
maximum water temperature down by ~ 30 degrees F; typically would =
maintain ~ 180F in sustained climb.  Other info: it is very dependent =
upon heater core surface area - i.e., it worked well on a radiator core =
of 12" x 18" but had no measureable effect on an oil cooler that was 6" =
x 11.75"  ....  Jeff
>=20
> Hi Guys
>=20
> A successful 32 minute Flight #3. I was very pleased.
>=20
> Main change this flight was winding in some prop pitch and extending =
the envelope to 140 KIAS.
>=20
> Configuration of flight was:
> OAT was a low 62F
> Coolant Inlet - 21in2
> Oil Inlet - 8in2
> Total Outlet - 80in2
> Coolant peeked at 226F
> Oil peeked at 218F
> EGT peeked at 1724F
> Fuel Flow peaked at 18.7 GPH (Flowscan - not sure how accurate from =
the provided data)
> We are still keeping immediately above the airfield
>=20
> Reflections:
> 	Idle RPM to low
> 	Temps are to high on climb out but maybe OK when we get her up =
to her cruise of 190 KIAS
> 	I will investigate water spray cooling for the initial climb. =
Does anyone have experience/data?
>=20
> Here is a graph of the data.
>=20
> Cheers
>=20
> Steve Izett
> Perth Western Australia
>=20
> --
> Homepage:  http://www.flyrotary.com/
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