PDA

View Full Version : trimtaps



FA_Whisky
09-13-2004, 03:11 AM
trimtaps (http://home.planet.nl/~roelo085/)

When you look at the Pics of the P51d you will clearly see the trimtaps on the wings and tail.
When you trim the plane in the game you see the whole control move. Their do not seem to be any trimtaps. Moving the whole elevator to trim the plane will add more drag than just a trimtap right?
What i was wondering is how this is moddeled. Does moving the trimtaps(witch are not there) add just as mutch drag as moving the whole elevator. This goes for all planes with trim in the game btw.

FA_Whisky
09-13-2004, 03:11 AM
trimtaps (http://home.planet.nl/~roelo085/)

When you look at the Pics of the P51d you will clearly see the trimtaps on the wings and tail.
When you trim the plane in the game you see the whole control move. Their do not seem to be any trimtaps. Moving the whole elevator to trim the plane will add more drag than just a trimtap right?
What i was wondering is how this is moddeled. Does moving the trimtaps(witch are not there) add just as mutch drag as moving the whole elevator. This goes for all planes with trim in the game btw.

JG53Frankyboy
09-13-2004, 03:30 AM
actually these trimm tabs are moving the elevators - so.......... http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

if you want trimm your plane nose down , than these taps are moving up (!) , forceing the elevators going down due to the windforces

one special is the elevator trimm in Bf109F/G/K.
it was called "fleigendes Leitwerk" , the whole elevator was moved

http://www.jagdgeschwader53.flugzeugwerk.net/Bf109/ruder2.jpg

WWMaxGunz
09-13-2004, 09:03 AM
Since holding your joystick in any position or even not holding it is really
only what amount of force is used on the airplane stick (no, holding your
joystick 20% forward is NOT meaning the airplane stick is 20% forward) and
since trim is adjustment of force on the airplane stick then using trim in
the sim will move the control surface -- since we have no way to hold the
airplane stick in any single position and keep it there.

Understand, your joystick is how much force is put on the aircraft control stick.

Your stick in the center = no force placed on the control stick.

Adjust trim. Now the zero force position of the control stick is moved. This is
real. Being able to move the control stick by adjusting trim is also real. It is
not recommended procedure by any means but it is real by all means I have seen.
In reality, you hold the stick or control column and adjust trim until there is
no force needed to hold the stick in that position.
We can't *really* do that in the sim. We can let up on our joysticks as trim is
fed in but we can't hold them steady without the airplane control stick moving
as trim feeds in. that would be the same as adjusting trim and as the force on
the stick lets up, you keep pushing with the same force as before you trimmed.
Until the reality of FORCE-BASED joystick interface is understood at a gut level,
all kinds of mistakes are made by players who don't understand and trim is one.

Oh, I wouldn't sweat the graphics. They don't make things happen, it's the other
way around.


Neal

VW-IceFire
09-13-2004, 10:15 AM
I think the whole elevator responds to the trim tab (its a tab not a tap as far as I know) is just a graphical thing. I guess moveable tabs on moveable surfaces (sort of like a second layer of movable surfaces) was a bit much for the programming at the time.

I wouldn't worry too much http://ubbxforums.ubi.com/infopop/emoticons/icon_biggrin.gif

http://home.cogeco.ca/~cczerneda/sigs/tmv-sig1.jpg
RAF No 92 Squadron
"Either fight or die"

FA_Whisky
09-13-2004, 11:15 AM
thanks for the reply guys.
I understand how trim in a real plane works now.
Just another limit for a flightsim.