Precisely that. The load capacity of the aircraft is designed to a lower
limit in the negative sense. Added to which. a seriously vigorous bunt
would be more difficult for us average pilots to recover from.
Duncan
On Thursday, February 07, 2002 5:37 PM, Tom & Cathy Friedland
[SMTP:tfriedland@attbi.com] wrote:
> Duncan
>
> You are absolutely right. Serves me right for trying to think when it is
late at night or maybe I
> have been sniffing too much resin.
>
> I have been trying to think why there is a maximum downward deflection of
the stabs and I cannot
> think of any reasons! In 40 years of flying I can think of only one time
when I needed full
> negative deflection and that was an unusual circumstance. I think now
that any limitation on the
> stab movement is to limit attitude changes that will overload the wings.
>
> Regards
>
> Tom Friedland
>
> McFadyean wrote:
>
> > Eh?
> > Upward deflection (ie TE moving upwards) will increase the negative
lift, not decrease it.
> >
> > Duncan McFadyean
> >
> > On Sunday, February 03, 2002 10:26 PM, Tom & Cathy Friedland
[SMTP:tfriedland@attbi.com] wrote:
> > > Duncan
> > >
> > > Your symmetrical loading theory is probably erroneous. The
stabilator is
> > > normally loaded downward (negative lift) when it is in a neutral
position.
> > > Therefore, it will take less downward deflection to reach the
critical
> > > (breaking) point. Upward deflection (12 degrees) gets to overcome
the downward
> > > loading before it even starts to give positive lift loads as it
deflects
> > > upward.
> > >
> > > Regards
> > >
> > > Tom Friedland A079
> > >
> >
>
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