Dizziness disorientation

On Jan 17, 8:57 am, Airbus wrote:

Disorientation can be accompanied by coriolis effect, or not. When you
lose visual reference to the horizon, and your physical sensations give
you misleading information about your situation, this is disorientation.

"Coriolis" when used in Aviation refers to the earth's rotational
affect on air masses:

http://www.ems.psu.edu/~fraser/Bad/B...riolisFAQ.html

A good discussion on "dizziness":

http://www.med.umn.edu/otol/library/dizzines.htm

Dan

Are you always flying the same airplane? If so, look it over very
carefully during your next preflight. There may be something loose
that can move into the air stream to cause yaw.

Or, until this dizziness issue is resolved, try flying a different
airplane (with a safety pilot). It could be the airplane, and not you.
The thing that suggests 'it's the airplane' model is you talk about
it happening in a cruise configuration, straight and level, when the
airspeed might be higher. It would, I think. take a smaller disruption
in airflow to induce yaw at a higher airspeed.


As others have pointed out, most times the longitudinal axis of the
airplane does not point in the direction the airplane is going over
the ground because of cross winds, but that does not induce yaw. A
novice pilot, with way less experience than .you have, might try to
make the airplane line up with the ground track by using the rudder.



an On Jan 16, 7:25 am, New Pilot wrote:
Hi folks, y

Does anyone have any experience of the following or know about it.

I recently got a ppl licence and generally are fine doing all the
flying type tasks required to safely take off fly and land.
One thing that seems to get me every time is if I am for example
flying straight and level at 2 or 3 thousand feet (height just as an
arbitory figure) and I encounter a crosswind the aircraft slowly but
surely starts to yaw as the wind hits the tail fin. this bit I
understand but the bit I don't is when this situation happens
I feel dizzy and disorientated for a few moments as the view from the
window in VFR starts to rotate.
I can reduce this by a bit of rudder to stop the rotation and keep the
ball in the centre.

Is this normal or should I not be flying?

thanks

In article ,
says...


Disorientation can be accompanied by coriolis effect, or not. When you
lose visual reference to the horizon, and your physical sensations give
you misleading information about your situation, this is disorientation.
Sometimes this can be accompanied by the dizziness you describe, and many
pilots have felt this.

The trouble is that you are experiencing it in a situation where you have
not lost visual references. If you have a PPL, it means you have some
hours, so it is not your first time in a plane or anything.

My (non-expert) read on this is that it is not normal, and possibly not
compatible with flying. Consult a doctor first - it may be somùething
easily addressed.

On Jan 17, 11:07 pm, Airbus wrote:
In article
,
says...



On Jan 17, 8:57 am, Airbus wrote:

Disorientation can be accompanied by coriolis effect, or not. When you
lose visual reference to the horizon, and your physical sensations give
you misleading information about your situation, this is disorientation.

"Coriolis" when used in Aviation refers to the earth's rotational
affect on air masses:

Better research would have rendered you reply so much more convincing . . .

http://www.answers.com/topic/artific...cat=technology

http://www.aopa.org/asf/publications/sa17.pdf

http://www.yorku.ca/harris/pubs/coriolis.pdf

Thanks for the reminder, however snidely proffered.

Dan

On Jan 17, 11:39 pm, Airbus wrote:

This discussion came up here maybe a year or so ago, and someone who was pretty
well informed used the term. I was tempted to reply in the way you did, but I
checked first, and found out I still had much to learn.

As we all do. Please accept my apologies as well.

If I remember correctly Coriolis illusion is mentioned in the
Instrument Flying Handbook.

I should have 'membered that!

Dan

Jay Honeck wrote:
We had one little kid
get motion sick, watching her dad yank and crank.

eeeeewwww

And need therapy into her thirties.

Dang, what kinda place you runnin'?

--
Message posted via http://www.aviationkb.com

We had one little kid
get motion sick, watching her dad yank and crank.

eeeeewwww

And need therapy into her thirties.

Dang, what kinda place you runnin'?

Jeez, get your mind outta the gutter!

;-)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

"Jay Honeck" wrote in news:XnRjj.39979$Ux2.10152
@attbi_s22:

We had one little kid
get motion sick, watching her dad yank and crank.

eeeeewwww

And need therapy into her thirties.

Dang, what kinda place you runnin'?

Jeez, get your mind outta the gutter!


So it must have been the buffet, then.

Bertie

New Pilot wrote in news:n9tro39afurstkjapf0rtnc6ppl43not4v@
4ax.com:

Hi folks,

Does anyone have any experience of the following or know about it.

I recently got a ppl licence and generally are fine doing all the
flying type tasks required to safely take off fly and land.
One thing that seems to get me every time is if I am for example
flying straight and level at 2 or 3 thousand feet (height just as an
arbitory figure) and I encounter a crosswind the aircraft slowly but
surely starts to yaw as the wind hits the tail fin. this bit I
understand but the bit I don't is when this situation happens
I feel dizzy and disorientated for a few moments as the view from the
window in VFR starts to rotate.
I can reduce this by a bit of rudder to stop the rotation and keep the
ball in the centre.

Is this normal or should I not be flying?

thanks

I'm not a guru, but I have experienced weathervaning when flying "hands off
& feet off" in a direction that was 60* or so against the prevailing wind
current.

The point about the plane not maintaining coordination is probably about
right - certainly you are not "stepping on the ball" (or perhaps more
likely as a new pilot, stepping on it too much) and causing a skid or slip,
which is probably contributing to your disorientation.

Generally speaking, though, the weathervaning that I have experienced has
caused a turn that was not very quick, but more progressive and subtle. If
you are experiencing an aggressive turn, I have to believe you are not
controlling the rudder properly. Otherwise if you are getting dizzy from a
simple turn at altitude, I would agree with the others here that you should
visit your AME...

I can only remember getting dizzy while flying twice. Once when I did my
first recovery from unusual attitudes under the hood (I had a pretty
aggressive instructor - I think he was doing himmelmans while I was there
with my head pointed at the floor), and once when I had just recovered from
a cold and had a bit of trouble getting my ears to pop on a relatively
aggressive descent - apparently I wasn't as recovered as I thought I was,
and when my ears finally did pop, my whole head whooshed for a second.

You should not be experiencing dizziness on a regular basis during normal
straight-and-level flight nor even in a relatively aggressive turn. Do you
have trouble doing short approaches or steep turns?

Judah wrote in
:



I'm not a guru, but I have experienced weathervaning when flying
"hands off & feet off" in a direction that was 60* or so against the
prevailing wind current.


Airplanes do not weathervane when they are off the ground in a steady wind.


Bertie