CFI oral intel

Michael Ash wrote in
:

In rec.aviation.student Gezellig wrote:
Michael Ash pretended :
In rec.aviation.student Gezellig 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.

Well, the wings won't come off as you exceed VNE. You have a good 10% on
top of that before anything will happen.
Something nasty will at the load limit, though. Not the published one,
of course, but at 50% over that. At the published load limit you are
guarunteed that the airplane will not permanently deform. 50% over that
you're guaunteed it will remain in one piece. Over that you're on your
own. It;s not quite as tidy as all that, though and with most light
planes it's probably flutter that's going to pull it apart and that will
probably be brought on by a combination of load and speed. This is not
to say it's safe to operate at or near the red line or load limit.
It isn't.



Bertie