|
|
----- Original Message ----- From: "Haywire" <haywire@telus.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, August 12, 2003 3:18 AM
Subject: [FlyRotary] Re: Cooling / Pressure recovery
>
> Hmmm...... You don't think 8 seconds counts as cooling do you? : )
> By cooling, I mean that the temperature has stabilized.
> Lots of dragsters have no cooling system at all and "cool" OK for 5 - 10
> seconds.
I should clarify this; I consider boost pressure to be more than full
power,
as this airframe really isn't designed for this. (this was an issue for
the
inspector as well but that's another story) I really only want boost at
altitude, although I of course had to test it:-). For my purposes 30"MAP
(or
0psi boost as gauge reads) is full power and I've run it at this for up to
a
minute combined with taxiing at other various power settings and never
seen
any problems. I really wish I could give more info than this, but I hope
this is an indication of how well it will work in the air, without being
too
draggy.
If the engine temperatures have stabalized in one minute of full power
running then it is indeed cooling. But this seems unlikely. I think I can
run at WOT on the ground for 1 full minute (and stay under redlines) but the
temps are still climbing. In three minutes my coolant would be spewing out
of the cowl. Is this a problem? Not at all.
Tracy
|
|