Re: EZB static stability margin

From: ykleetx <ykleetx_at_gmail.com>
Date: Mon, 24 May 2010 22:05:10 -0000

Don,

That's very interesting to know, that 2-5% is good margin computed by Bernie Hunt's program. I don't think any of my models could be called "stiff", but I found that my LPP flies well at 1-2%. I do try to fly with as stiff a tailboom as possible, given the weight constraints.

Does the mini-dome in Johnson City have "smooth air"?

-Kang

--- In Indoor_Construction_at_yahoogroups.com, Don Slusarczyk <don@...> wrote:
>
> If that is the program you are using then you can fly most duration
> models in the 2-5% range provided the models are some what stiff. Very
> floppy models like EZB tend to fly better with a range closer to 10%,
> you can go less but the trim must be spot on or the site has to have
> smooth air. Also for pennyplanes I use to go closer to 10% as well as
> they were less troublesome with high torque launches. "Reg" is the name
> of a friend of Bernie's (an aero engineer) who supplied him with the
> formula for NP
>
> Don
>
>
> > Nick,
> >
> > I didn't realize that people are flying so "aggressively" with margin near zero for all classes. I have been flying 25 to 40% with my F1Ls. What margins do you use for your F1D and ministick?
> >
> > Also, what are people using for the definition of the Neutral Point? In Bernie Hunt's program, he calls it "Reg's Neutral Point". Does anyone know who is Reg?
> >
> > -Kang
> >
> >
>
Received on Tue May 25 2010 - 09:11:15 CEST