Ohhhsorry, I must have been joking as you point out....I don't even know
when I'm kidding anymore...thanks for bringing me to my senses!
----- Original Message -----
From: "Jill and Rick Brown" <[EMAIL PROTECTED]>
To: "Rodger Hamer" <[EMAIL PROTECTED]>
Cc: "Moved by the wind." <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, March 12, 2000 3:01 PM
Subject: Re: [RCSE] On Step
> You have got to be joking!
> How does a weather vane work? It wants to point into the wind. The tail
> of a sailplane is essentially a weather vane. The sailplane is pivoting
> about the CG and the tailboom and stab form a moment arm. It doesn't
> take much force on the tail to rotate it. If you need proof just balance
> the plane on it's GC and add a 1/2 oz of lead to the tail. Tail Down!
> The lift component is an upward force on this system and wants to
> rotate the tail upward to some degree as it also starts to lift the
> whole plane. Because it takes very little force to rotate the tail up
> or down this force gives a tail up/nose down attitude to the plane.
>
> Does this seem to make any sence to anyone?
>
> RB
>
> Rodger Hamer wrote:
> >
> > That is an answer that makes sense!
> > Rodger
> > ----- Original Message -----
> > From: "Moved by the wind." <[EMAIL PROTECTED]>
> > To: "Rodger Hamer" <[EMAIL PROTECTED]>
> > Cc: <[EMAIL PROTECTED]>
> > Sent: Sunday, March 12, 2000 9:52 AM
> > Subject: Re: [RCSE] On Step
> >
> > >
> > >
> > > Rodger Hamer wrote:
> > >
> > > > Can somebody explain to me why when in good lift the tail rises
and
> > the
> > > > plane appears "on step"
> > >
> > > Seems like there's a lot of opinions on this. IMHO the opinions above
are
> > wrong, so I'll add mine.
> > >
> > > The story starts with your plane is flying along level in still air at
an
> > AOA of say 3*, and the fuse level, (unless it's an Hobie
> > > Hawk). Now you have wisely steered the plane to lift, how does the
plane
> > "see" this? With the upward component of lift the wing is
> > > now flying into the air at an AOA of say 5*, but the plane is trimmed
to
> > enter the air at 3*, so what happens now? The plane will
> > > assume an AOA of 3* to the air, but that looks like it's -2* on the
fuse
> > compared to ground. You're on the ground, so it looks like
> > > the nose went down or the tail went up to you.
> > >
> > > Did I get it right?
> > >
> > > Rich B
> > >
> > >
> >
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