On Wed, 2002-06-26 at 14:08, Curtis L. Olson wrote:
> Andy Ross writes:
> > * For safety.  The A-4 had automatic slats that were retracted by
> >   aerodynamic force -- they dropped automatically at low airspeeds and
> >   high AoA's.  On the ground, they just hung open.  This was a great
> >   idea for maintenance purposes, but left open the possibility that
> >   they might get stuck and deploy asymmetrically.  That's a
> >   recoverable situation normally, but not when there's another plane a
> >   few feet under or above your wing tip. :)
> 
> The helio courier also has this feature.  The leading edge slats are
> split so you have two per wing ... four total acting independently of
> each other.  Depending on a variety of factors, each of the four could
> deploy/retract at a different time.  They made a bit of a bang coming
> down so if you weren't expecting them, an unwary passenger might be a
> little surprised and wonder what just fell off. :-) It's a neat idea
> that is simple and effective.  I've always thought it would be kind of
> fun to impliment something like this on an R/C model, not that the
> typical R/C model would need them ...

Two per wing, all independent?  Sounds like a lot of potential for
lateral control hell....

> 
> Curt.
> -- 
> Curtis Olson   IVLab / HumanFIRST Program       FlightGear Project
> Twin Cities    [EMAIL PROTECTED]                  [EMAIL PROTECTED]
> Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org
> 
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