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Mechanics of Elevator Trim. In Detail.



 
 
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  #1  
Old June 8th 08, 10:06 PM posted to rec.aviation.student,rec.aviation.piloting
Bertie the Bunyip[_25_]
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Posts: 3,735
Default Mechanics of Elevator Trim. In Detail.

More_Flaps wrote in
:

On Jun 9, 7:29*am, "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way
D0t C0m wrote:
"Le Chaud Lapin" wrote in
messagenews:5c4deac0-2b92

...
On Jun 8, 11:07 am, "Robert M. Gary" wrote:

On Jun 7, 10:08 pm, Le Chaud Lapin wrote:


What exactly happens when the trim is adjusted to point the nose
upward?


What type of plane is this for? I have a Mooney and also fly a 182.
Both trim system are very, very different.


For sake of those of us who only own MSFS, let's say a C172.

Does MSFS emulate the servo tab on the elevator? What does it do when
you change the trim in the air?

Trying to emulate real life trim on a simulation system that uses
spring centered control sticks isn't going to work like real life as
you may already know.

Should I post the spoiler on how a couple other mechanisims work
(besides servo tabs)?


I'll raise you one to make three additional trim systems. Any more?


I can think of four for a total of five, depending on whether you'd
consider hydraulic centering to be the same as a bungee trim system.
theothersa re of course, a tab system which is th emost common light
aircraft system. the trimmable stab, a'la Cub and most airliners and the
vane, like some early T-carts had.. There're probably some others, but i
can't think of any.


Bertie

  #2  
Old June 9th 08, 04:58 PM posted to rec.aviation.student,rec.aviation.piloting
Robert M. Gary
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Posts: 2,767
Default Mechanics of Elevator Trim. In Detail.

On Jun 8, 10:20*am, Le Chaud Lapin wrote:
On Jun 8, 11:07*am, "Robert M. Gary" wrote:


For sake of those of us who only own MSFS, let's say a C172.


What does MSFS have to do with anything. This is a pilot news group,
not sim. There are sim groups out there that would be more appropriate
for your question.

-Robert,CFII

  #3  
Old June 9th 08, 05:34 PM posted to rec.aviation.student,rec.aviation.piloting
Le Chaud Lapin
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Posts: 291
Default Mechanics of Elevator Trim. In Detail.

On Jun 9, 10:58*am, "Robert M. Gary" wrote:
On Jun 8, 10:20*am, Le Chaud Lapin wrote:

On Jun 8, 11:07*am, "Robert M. Gary" wrote:
For sake of those of us who only own MSFS, let's say a C172.


What does MSFS have to do with anything. This is a pilot news group,
not sim. There are sim groups out there that would be more appropriate
for your question.


MSFS was the means by which I discovered the mechanism.

If I had learned in actual aircraft, the question still would have
been relevant.

-Le Chaud Lapin-

  #5  
Old June 9th 08, 07:06 PM posted to rec.aviation.student,rec.aviation.piloting
Robert M. Gary
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Posts: 2,767
Default Mechanics of Elevator Trim. In Detail.

On Jun 9, 9:34*am, Le Chaud Lapin wrote:

MSFS was the means by which I discovered the mechanism.

If I had learned in actual aircraft, the question still would have
been relevant.


I disagree. I've never had a student have trouble understanding trim.
I think this is just something that is confusing for the sim guys. As
such it is more approporiate for a sim group, not a pilot's group.

-Robert, CFII
  #6  
Old June 9th 08, 07:19 PM posted to rec.aviation.student,rec.aviation.piloting
Gig 601Xl Builder
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Posts: 683
Default Mechanics of Elevator Trim. In Detail.

Le Chaud Lapin wrote:

MSFS was the means by which I discovered the mechanism.

If I had learned in actual aircraft, the question still would have
been relevant.

-Le Chaud Lapin-



You never learned of trim until MSFS and you are going to design an
airplane. Fabulous!
  #7  
Old June 9th 08, 08:20 PM posted to rec.aviation.student,rec.aviation.piloting
More_Flaps
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Posts: 217
Default Mechanics of Elevator Trim. In Detail.

On Jun 10, 4:34*am, Le Chaud Lapin wrote:
On Jun 9, 10:58*am, "Robert M. Gary" wrote:

On Jun 8, 10:20*am, Le Chaud Lapin wrote:


On Jun 8, 11:07*am, "Robert M. Gary" wrote:
For sake of those of us who only own MSFS, let's say a C172.


What does MSFS have to do with anything. This is a pilot news group,
not sim. There are sim groups out there that would be more appropriate
for your question.


MSFS was the means by which I discovered the mechanism.

If I had learned in actual aircraft, the question still would have
been relevant.


And now all is clear.

Cheers
  #8  
Old June 8th 08, 06:21 PM posted to rec.aviation.student,rec.aviation.piloting
[email protected]
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Posts: 1,130
Default Mechanics of Elevator Trim. In Detail.

On Jun 7, 11:08 pm, Le Chaud Lapin wrote:
Hi All,

This post is primarily directed toward student pilots like myself.

First, I am not asking because I want to know the answer (I already
know), but do a little experiment. I have maybe 7 or 8 different
sources of flight information that I rely on for ground school
(Jeppesen, FAA Handbooks, etc), and none of them said _how_ it worked
in sufficient detail, they only said what one must do to make the
plane pitch up or downard.

So for you students, please do not cheat and do what I did, which is
watch the airfoils move as you move the trim control. Also, it would
help if you did not think about the correct answer too much, which
would lead you to the correct answer, thereby defeating the purpose of
my experiment.

So, without cheating, and without asking an experienced pilot or
mechanic,...

What exactly happens when the trim is adjusted to point the nose
upward?

The more specific your answer about the mechanics on airfoil outside
the plane, the better.

And remember, no cheating!

Also, for experienced pilots that know the answer, please do not ruin
it by telling everyone before any answers have been given, though if
you are not certain of the answer and would like to speculate, that's
fine.

-Le Chaud Lapin-


Guess you missed this thread:

http://groups.google.ca/group/rec.av...ravel&lnk=ol&#

Dan
  #9  
Old June 8th 08, 06:28 PM posted to rec.aviation.student,rec.aviation.piloting
Le Chaud Lapin
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Posts: 291
Default Mechanics of Elevator Trim. In Detail.

On Jun 8, 12:21*pm, wrote:
On Jun 7, 11:08 pm, Le Chaud Lapin wrote:
Also, for experienced pilots that know the answer, please do not ruin
it by telling everyone before any answers have been given, though if
you are not certain of the answer and would like to speculate, that's
fine.


-Le Chaud Lapin-


* *Guess you missed this thread:

http://groups.google.ca/group/rec.av...wse_thread/thr...


Did indeed.

Just glad that the answer is not laid-out in first few posts.

For students that are reading this, don't cheat by reading that
thread!

There is no point in giving your answer if you look it up first.

-Le Chaud Lapin-
  #10  
Old June 8th 08, 07:25 PM posted to rec.aviation.student,rec.aviation.piloting
Bertie the Bunyip[_25_]
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Posts: 3,735
Default Mechanics of Elevator Trim. In Detail.

Le Chaud Lapin wrote in news:2bd217b4-297e-411f-
:

On Jun 8, 12:21*pm, wrote:
On Jun 7, 11:08 pm, Le Chaud Lapin wrote:
Also, for experienced pilots that know the answer, please do not ruin
it by telling everyone before any answers have been given, though if
you are not certain of the answer and would like to speculate, that's
fine.


-Le Chaud Lapin-


* *Guess you missed this thread:

http://groups.google.ca/group/rec.av...wse_thread/thr...

Did indeed.

Just glad that the answer is not laid-out in first few posts.

For students that are reading this, don't cheat by reading that
thread!

There is no point in giving your answer if you look it up first.

-Le Chaud Lapin-


So, what are they suposed to do, get it from reading tea leaves?


Bertie
 




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