All-Aircraft-Simulations
Not Flying Straight - Printable Version

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Not Flying Straight - ZXPKNOBB - 02.03.2009

Has anyone heard of a problem where all planes are misaligned? It's always pulling to the left.

When I start a map, and look at my feet, the rudder is automatically configured trimmed right a bit. (This isn't normal, is it?)
Even then, when I take off, the plane would pull to the left (a lot at lower speed, which makes taking off very difficult.)
Even after the take off, I'd have to trim further right to make it fly relatively straight.
I believe in addition to the rudder being misaligned, the plane also rolls to a side (I forgot which direction), even with considering the trimmed rudder. This is frustrating when I'm flying Japanese planes that cannot trim the roll.

This happened on the original IL-2, in which even the planes in demos and training kept on crashing into the ground. (This kinda gives away something is not configured properly internally.)
I tried Pacific Fighters, and the planes kept on pulling to the left, but the demos and training worked fine.
I tried 1946, and the problem persisted. I haven't tried LOMAC, but I fear it may have the same issue.
(I bought the "Ultimate Flight Collection".)

I suspect this may be just on my computer. I do not use/have a rudder pedal. It is not the joystick that is misconfigured, because 1) joystick does not affect the rudder, 2) the problem persists with joystick unplugged, 3) the demo tracks in IL-2 shouldn't be affected by the joystick at all.

IL-2 on my old computer did not have this problem, if I remember correctly.
If anyone has any lead on this issue, it would be very helpful.
Thanks.

- Potenz - 02.03.2009

This is normal, this side pull i caused by the torque of the engine, if you fly planes like p-38 that have counter rotating props you don't have this problems cause each engine is rotating oposite, and this compensate the torque side pull, same is for jets like Me-262.

Potenz

- Tesla - 02.03.2009

That is a pull to the right, he's pulling to the left. It's most likely a joystick issue.

- Pirate - 02.03.2009

it sounds like your problem isn't necessarily the roll caused by the torque, but that you don't have any rudder control on your stick. i think they can be controlled on the keyboard so you can counter the torque. But it is a tendancy you will find in all single engined aircraft, essentially you need a stick with twist function for the rudder. to make your life a little easier on take off you should set the control for 'lock tail wheel' but to play this as a sim you NEED to be able to control your rudder.

You shouldnt have this problem in LOMAC, because you will be flying jets.

Quote:That is a pull to the right, he's pulling to the left. It's most likely a joystick issue.

That depends on which aircraft you are flying, and the direction the prop spins

Rudder Misalignment - bohr-r - 02.03.2009

Hello,

I just read the post by ZXPKNOBB and it sounds familiar. When flying the Yak 1 to 9, and also with Bf 109s, the rudder is always positioned slightly to the right, even though the joystick (Saitek Cyborg Evo Force feedback, no rudder pedals) is in neutral position. Even when I start a mission on the ground, even before turning on the engine, the rudder is aligned to the right. I have to twist the joystick considerably to be able to fly these planes straight. Much less of an issue with Fw190s or Ki84s and Zeros. BTW, I am not talking about engine torque on take-off here.
Could it be that my computer is not reading the joystick or its software properly? I tried different things to get the configuration right, but the issue persists. Furthermore, when certain voice files of AI pilots are played, I temporarily loose control of the joystick. It just locks in whatever position its in, maybe for just a second and then I am able to regain control.
Any suggestions as to the source of these issues and how to correct them would be much appreciated.

Rhanks,

RB

- kawilder1 - 02.03.2009

Tesla Wrote:That is a pull to the right, he's pulling to the left. It's most likely a joystick issue.

Most single engine aircraft pull to the left from torque, so it requires right rudder to correct. Former CFS pilots have a lot of issues getting used to this game. It is humorous to watch them hit trees, flack and hangers.

- ZXPKNOBB - 02.03.2009

Ah, great.
Thanks, guys. You are the best.

So, this is what they meant by "Torque & Gyro Effects".
Potenz was right. When I turned this off, the problem diminished, though AI still auto-trimmed the rudder and the roll, before the take-off.

Thanks for the quick responses. All you guys have been very helpful.
Good to know that I am normal.

- ArcticViper - 03.03.2009

all of the above is "correct" but just to set the record straight... It's not torque that's counteracted by the rudder... that's a phenomenon called "P-Factor" It arises because the propellor generates most thrust on the downward blade motion (from top to 90degrees) thus creating an inbalance in forces over the propeller surface and therefore yaw towards the opposite side. (Yaws left for single engine clockwise rotation aircraft) The same rule applies to multi engine aircraft, unless they have counter rotating propellers.

Torque acts on the aircraft in flight by trying to roll the aircraft in the opposite rotation direction of the engine/propeller.

Lots of people get this wrong, and to be honest it's an acceptable mistake to make, because aerodynamics and/or flight dynamics aren't exactly common knowledge. :wink:

- Pirate - 03.03.2009

Thanks Arctic, I have learned something today... and its only 11:00! I guess these things are never as intuitive as they seem - you inspired me to look up P-factor, Propellor torque effect, gyroscopic precession and spiral prop wash..... now I feel like going back to bed again to assimilate my newly found knowlege. Its quite amazing how many forces have to be balanced just to have an aircraft fly straight and level when driven by a propeller. I think I prefered my old understanding of what was occuring... it was much simpler!