Not sure who to ask...

"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

I think thats what it is as well. What really surprises me is why Im
the only one who seems to have this problem....I look around the cabin
after this happens to me and I just see people lounging back....

oh well, I guess Im unique

Thnaks everyone for writing in!

"reykjavik" wrote in message
ps.com...
I think thats what it is as well. What really surprises me is why Im
the only one who seems to have this problem....I look around the cabin
after this happens to me and I just see people lounging back....

oh well, I guess Im unique

Thnaks everyone for writing in!

Perhaps everyone else feels it, but expects to feel wierd stuff, so they
just ignore it?
--
Jim in NC

In article , says...


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 building pressure, to keep you
from feeling like you are way high in the atmosphere.

Good suggestion - however, the flap retraction is usually several minutes
into a flight - if the OP's suggestion that this event happens within the
first two minutes of flight is accurate, this would usually be a bit too early
for flap retraction. Also, retraction of the flaps is so well compensated in
today's airliners that it is not usually associated with a perceptible change
in attitude (though I admit you can feel "something" at this time). Finally,
while it is true that the pressurization cycle starts at this time, the
pressurization only compensates for the loss in pressure due to the climb. At
no point does the cabin pressure exceed the initial, ground-level pressure.

The visual perception of the tube "pointing upward" is an excellent
suggestion, and could be related to the OP's observation that his experience
is different if he is in the back of the tube.

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...

Well, I don't want to beat a dead horse. If you do not have headaches, I
suppose it is very uinlikely you are suffering from migraine. It's the visual
disturbances that made me wonder about that - migraine sufferers call this
"aura".
http://www.migraine-aura.org/EN/Clas...turbances.html


In ther end, it's probably some sort of vertigo or spatial disorientation, as
others here have suggested. It would certainly be worth visiting a doctor, if
only to rule out anything serious. And don't even think about getting a PPL!!
:-)