Coordinated flight

[SimFreak]

Right now it seems aircraft is too coordinated (with assistance turned off). Ball stays centered through out almost entire flight envelope. Simple example is a loop (drastic change of speed). I would expect aircraft to be coordinated at one airspeed and rest to having to either trim or use rudder. This isn't so right now. Ball is centered through out the maneuver.

 

Is this a beta WIP of Pony FM issue?

[159th_Viper]

Track?

[SimFreak]

Track?

 

Sure

onaball.trk

[159th_Viper]

Ta

 

I'll have a looksee later.

[Wags]

Right now it seems aircraft is too coordinated (with assistance turned off). Ball stays centered through out almost entire flight envelope. Simple example is a loop (drastic change of speed). I would expect aircraft to be coordinated at one airspeed and rest to having to either trim or use rudder. This isn't so right now. Ball is centered through out the maneuver.

 

Is this a beta WIP of Pony FM issue?

 

Make sure Auto Rudder is turned off in Options/Misc/P-51 Tab.

[Yo-Yo]

Right now it seems aircraft is too coordinated (with assistance turned off). Ball stays centered through out almost entire flight envelope. Simple example is a loop (drastic change of speed). I would expect aircraft to be coordinated at one airspeed and rest to having to either trim or use rudder. This isn't so right now. Ball is centered through out the maneuver.

 

Is this a beta WIP of Pony FM issue?

 

Do you remember that if you have g-load more than 1 then ball movement gets lower for the same amount of sideslip?

 

If you want to see differencies try to climb in 1g flight to have IAS bleeding and you can see a significant ball movement below 200 mph.

[SimFreak]

Make sure Auto Rudder is turned off in Options/Misc/P-51 Tab.

 

It is off.

 

 

Do you remember that if you have g-load more than 1 then ball movement gets lower for the same amount of sideslip?

 

If you want to see differencies try to climb in 1g flight to have IAS bleeding and you can see a significant ball movement below 200 mph.

 

I'm not sure what you're trying to say. If you can do a loop without touching rudder, something is off.

[Smokin Hole]

It is off.

 

 

 

 

I'm not sure what you're trying to say. If you can do a loop without touching rudder, something is off.

 

Maybe. But not certainly. Coordination is primarily to overcome adverse yaw and you can't deny that there is plenty of that. Any yaw encountered in a loop would be due to torque and other left turning tendancies. When you are trimmed and entering the maneuver at speed not much is going to change unless you really crank back or get slow. The gyroscopic forces are very apparent. You only need to watch your plane from behind with F2 and push or pull hard at a high power setting.

[Smokin Hole]

I take back some of what I said above. After further testing I have to agree with SimFreak. The torque effect on takeoff seems a bit scripted to me. I have never flown a large tailwheel airplane but I have flown a handful of small ones. The tailwheel (lockable or not) doesn't add much to lateral stability after 20 - 30 knots. From that point the flow over the rudder and vertical stabilizer are doing all the work. But in the current P-51 Beta I think we are all holding the tailwheel down until a faily high speed of 70 plus because we've learned that letting the tailwheel up naturally sends the plane darting off one direction or another. If the plane really did "want" to do that, it would do regardless of whether the tailwheel was on the ground or not. Also, I can almost completely eliminate this directional control issue by using 1 notch of flaps. Why would 10 - 15 degrees of flaps make the plane so much more controllable as the tail comes up? Finally, gyroscopic precession is weak. In most low performance planes I have flown it was perhaps even stronger than the P-51. Shouldn't 1500 HP swinging 11 feet of prop do a little more? Full power, low speed go arounds result in the most gentle left roll when we know from material posted elsewhere on this forum were very difficult to control and often killed inexperienced pilots. I don't want to make an idiot of myself as I know (or at least assume) that P-51 pilots have tested the FM. Conversely, I've never gotten closer than 10 feet to a Mustang. And I also understand that it was a pretty easy plane to fly compared to its contemporaries. But the OP has a point. This one is really easy in places where I would have expected more difficulty (his loop for instance). And difficult where I would have expected none, such as when allowing the tail to fly itself off durning takeoff (with flaps up).