Yaw Usage

[mtuckner]

Been asked a lot before, when to properly use it. I got that part. Use it to steer on the ground, when an engine is out, heavy cross-wind landings, and turning. My problem is, how do I use the yaw to complement the turn properly? I find I try to use it but either over or under use it and don't know the proper situations when it would provide a benefit and maximize my energy. I understand a small adjustment to keep your elevation solid during a normal slow bank, what I am looking at more specifically is high stress maneuvering. I seem to be able to get tighter turns on occasion without losing as much energy but the reasoning seems to allude me. :joystick:

 

Is there a video or a simple way to train the when, WHY, and how. Maybe a video demonstration on the turns and explaining what yaw you are putting on the craft and such and what it is in particular doing for you in the turn.

[Avilator]

Do these help?

http://en.wikipedia.org/wiki/Adverse_yaw

http://www.howcast.com/videos/22907-Rudder-and-Adverse-Yaw

[Frederf]

Rudder is used to keep the turn coordinated, meaning zero beta angle. Don't use it to adjust your turn's level quality directly, that's strictly bank and pitch work.

 

When you bank and pull you get what's called adverse yaw, a tendency for the airplane to fly out of a coordinated state (in this case, yawing to the outside of the turn). The SAS has features (old school was ARI, new feature I don't know the name) designed to automatically counteract adverse yaw but it's limited in its authority depending on speed.

 

Coordination is best seen with the coordination ball directly below the ADI. One adds rudder to center the ball to fly coordinated.

 

It's really just a heavy ball in a curved glass tube with a damping fluid. As such it's an accelerometer which shows the lateral component of the load factor. Under normal flight conditions having the ball centered means that the load on the aircraft is in the vertical plane. With high speed, symmetrical lift, symmetrical loading, reasonable wind, etc. that also means that the sideslip angle (beta) is minimal.

[mtuckner]

Thanks guys. Perfect information, particularly the howcast video. Really broke it down for me perfect! Nothing like learning on the job while dropping bombs!

[Vullcan]

What should happen when you step down on the rudder pedals (as if they were brake pedals)?

 

I hooked up the saitek pro flight pedals and am worried the default axis mapping is not correct. It seems to do the same thing pressing down on the pedal as moving the pedals does (control the rudder).

[EtherealN]

In reality, that would be the wheelbreaks, allowing differential breaking. Assists in turning while taxiing and such.

[LukeSky]

Hi, I need help on this topic and on the rudder usage. When I use the rudder pedal, let say the left one, the aircraft start rolling on the left. In the option menu, my saitek pedal has only the rz axis assigned.

So the question is, why when I use the rudder, the plane rotate 1-2 sec. on the yaw axis and then start rolling as if I were using the joy x axis?

[bradleyjs]

Because Yaw will make one wing go faster than the other - thus increasing lift on one side and a yaw-induced roll-effect is presented. That's normal aviation dynamics.

[LukeSky]

Thank you very much!

Happy new year!

[bradleyjs]

Thank you very much!

Happy new year!

You too!!:thumbup:

[LukeSky]

I have another question, is it possible to do a stall spin.

I tried, but, I'm not able.

I'm able to stall, but It doesn't seem to spin and I always recover imidiately.

 

And is possible to stall that plane at the point where it's impossible to recover from the stall.

 

Thanks

[LukeSky]

I'm asking that question here because when I'm trying to do the spin stall I'm using the rudder to rotate on the yaw axis.

I tried that method too and doesn't seem to work :

[Avilator]

I have another question, is it possible to do a stall spin.

I tried, but, I'm not able.

I'm able to stall, but It doesn't seem to spin and I always recover imidiately.

 

And is possible to stall that plane at the point where it's impossible to recover from the stall.

 

Thanks

 

Given the design of the A-10, with it's straight wings and large vertical tail area, it doesn't like to spin. That's not to say it can't, just that you would need to be really extreme with your control inputs to get it to spin. What sequence of control actions are you taking to try and get it to spin?

 

As for your second question:

Again, because of the A-10's design, given enough altitude, the A-10 will always recover from a stall. Some aircraft, particularly with high mounted horizontal stabilizers, suffer from a phenomenon called "deep stall."

 

This looks helpful:http://en.wikipedia.org/wiki/Stall_(flight)