 CFI oral intel
On Jun 4, 9:38 pm, Michael Ash <m...@mikeash.com> wrote:
> In rec.aviation.student Gezellig <geezel...@> wrote:
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> > Michael Ash pretended :
> >> In rec.aviation.student Gezellig <nokon...@> wrote:
> >>> On Fri, 30 May 2008 01:20:04 -0500, Michael Ash wrote:
>
> >>>> Joking aside, if your straps were loose enough that you could slump
> >>>> forward, that *would* affect your CG which would in turn affect your
> >>>> trimmed airspeed.
>
> >>>> There's another issue that I just thought of that I don't think anyone has
> >>>> mentioned yet, though. Won't you get into a graveyard (bad terminology for
> >>>> this scenario, as you're already dead) spiral? After all, if you could
> >>>> stay straight and level just by taking your hands off the controls you
> >>>> wouldn't need to fear IMC with no gyroscopic instruments. So it seems that
> >>>> if you start high enough, the correct answer to this question would be
> >>>> whatever the terminal velocity of your fuselage is without its wings. Am I
> >>>> off base here?
>
> >>> You fly until gassless, stall, nose down, then descend too rapidly,
> >>> striking the ground with the wings ripped off. Works for me.
>
> >> You don't stall, because when the engine quits the airplane will start to
> >> descend, maintaining approximately the original airspeed.
>
> > At what point do you expect to lose the wings via "the correct answer
> > to this question would be whatever the terminal velocity of your
> > fuselage is without its wings."?
>
> If you enter a spiral dive as I surmised, the wings fall off either when
> you exceed Vne or when you exceed the maximum loading the wings can
> support, whichever comes first. However it would seem that whether this
> happens or not will depend on the airplane in question.
>
If the plane is in a steady dive at 2x VNE what is the wing loading?
VNE may be set by srface instability (flutter) or perhaps engine
overspeed but is not set by wing loading -that is Va -at least that's
my understanding.
Cheers
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