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Date: Mon, 13 Jun 2005 09:55:22 -0700 (PDT)
From: Michael LaFleur <mike.lafleur@sbcglobal.net>
Subject: Re: [FlyRotary] turbo PRV's
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Yeah, that's what I want. I know they are out there.
There are alot of normalized aircraft out there. That
may work out fine. 35 inHg is about 2-1/2 psi boost.

What would a Renesis do under 2-1/2 psi boost? Maybe
the PRV can be found that is a couple of inches less.

Mike

--- cardmarc@charter.net wrote:

> Whoooah. All serious aircraft that have turbos have
> a "PRV"-pressure relief valve on the intake
> manifold, set to open a few inches above the max
> boost level you contemplate on maintaining
> (turbo-normalized models). They are able to maintain
> sl pressures in the intake at elevation, so they are
> referenced to know the difference. The one I'm using
> opens at 35", even if at 20,000 feet.
> Marc Wiese
> > 
> > I also understand the blow-off valves are useful
> in car applications, where
> > the driver will shut the throttle suddenly after a
> period of high boost. The
> > turbo can not shut down so fast and the compressed
> air has no place to go.
> > The valve than releases the air out to prevent
> damage. I don't see why we
> > need blow off valve in aircraft?
> > Bulent
> 
> 
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