"reykjavik" wrote

There is a period in flight
(again, don't know what its called but I can feel it) about a minute
after take off when the plane feels like its dipping down and yet
flying up at the same time and its that time which causes the issue.
It feel a little like a negative-G feeling.

Sounds like the feeling when the flaps finish fully retracting, and the
plane momentarily dips, as it accelerates, and settles on a new angle of
attack. That is about when that occurs, and it is a bit of a strange
feeling, and could cause a bit of vertigo.

Also, it is about then that the cabin starts buildin pressure, to keep you
from feeling like you are way high in the atmosphere.

As to G's questions, when I say I can't see straight, I don't see
blackness, I see the same way I see as if you've just been spun around
a lot, meaning I can see everything, no bluriness, but nothing is
really staying put, kind of bouncing all over the place. The same thing
you'd see if you were squirming around...

The plane at some point changes its climb, from very steep to get the noise
away from the ground, to gaining speed, and climbing at a little slower
rate. If you get used to the very steep angle of climb, then all of a
sudden, it is not as steep, your mind may try to tell you that you are not
climbing, but your eyes are telling you that you are.

It always seems strange to me, when you look up the tube (the fuselage
inside) and try to figure out how steep the angle really is. It is hard to
resolve this factor to me. Perhaps that is part of your strange feeling,
but I really think the flaps retracting, and the following dip is the main
thing that is getting to you.
--
Jim in NC