Could make for an interesting discussion on the physics forum :-)
I'm not all that up on the physics of spinning tops these days as I'm
getting older and more feeble minded by the day :-), but off the top (no pun
intended) of my head, I'm guessing that as the speed slows on a spinning
top, a mismatch similar to the mismatch between the two axis systems in the
T38 would probably cause a gravitational torque change in the top,
accounting for a precess determined by the torque.
I think you could easily get into angular momentum here :-))
Anyway....I see the main difference between the two examples as the
existence of the aerodynamic axis produced by an extremely predominant
relative wind in the T38 as being missing in the spinning top.
Dudley

"Morgans" wrote in message
...

"Jose" wrote in message
om...
If the 38 is rolled fast enough at any g above 1g, (with the airplane
loaded) you can couple the roll axis with another inertia axis, usually
pitch in the Talon. Its quite a complex issue, and involves both the
inertial axis and the aerodynamic axis of the aircraft.

Ok, I see it's interesting, but I'm still not sure what it means. Is
"pitch" referenced to the earth or to the (rolling) aircraft axis?

I'm betting it is a motion not unlike a child's spinning top, as it slows
down too much, and starts to wobble on it's axis, right before it really
wobbles and falls down. That is when you depart from controlled flight!
g

Kinda' right, Dud?
--
Jim in NC