Idle/Braking (was Re: Winter / Focus / Fuel/Electric.)

[Dean Pappas]

Hi Doug,
Sure ... the braking gets better at lower and lower RPM until the combo of RPM and airspeed stalls the prop airfoils, which are flying "inverted" at that point.
The braking versus RPM curve at a given airspeed will have a hump. 
Regards,
	Dean

-----Original Message-----
From: Doug Cronkhite [mailto:seefo at san.rr.com]
Sent: Thursday, December 04, 2003 4:39 PM
To: discussion at nsrca.org
Subject: Re: Idle/Braking (was Re: Winter / Focus / Fuel/Electric.)


> I gather that you are saying as far as you can tell, the slower the idle,
> the better the braking? If so,  we are in agreement. The training manual is
> wrong.

This is correct to a point. As rpm goes lower and lower.. the drag starts 
to go down. 

I know just the guy to ask this stuff about too.. he's an aerodynamicist 
with gulfstream.. and also a Team JR guy.

-Doug

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