Wing rock

[Pistolera]

Funny.....

Funny thing happened a few weeks ago while out at my local field. Got into a discussion with a full scale pilot, about lift. He was bound and determined to disagree with me about how each side of the wing works, in regards to lift. He, of course, is an RC pilot too. He lost the covering on the top side of his Sweet Stick wing, while flying inverted. Said he was losing lift when he rolled over to upright. I said no way. I also said, that when you are upright, the bottom of the wing generates lift, the top used gravity, to hold the airplane down. He flat told me I was wrong. Told him that he needed to continue to do what he does, and I will do what I do and that is have fun!

Back to our regularly scheduled program.

he needs to re-think the whole lift thing

 

[Terryscustom]

I don't like the spoiler on method as you have to turn it off to go inverted or fly normally. The better thing to do is either get the wing fully stalled or attached. Maybe try SFGs or vortex generators.

Yup, I added SFG's to a Pilot 50cc Extra that wing rocked like a mutha. That and some blips of the throttle to equalize the torque and it became a harrier machine!

 

[Jetpainter]

Getting the nose higher and using SFG's helps the wing rock on my Pilot 87" Edge.

 

[Bunky.F.Knuckle]

I find that the SFG's helped the airplane track a smidge better, not that others have different results. I've had airplanes that had wing rock in harriers. I've had airplanes that 3D extremely well at a heavy nose heavy CG. I got that nose higher for high alpha and the rock went away. My .01c worth of advice.

 

[emtp275]

I have used the SFG's but not recently it was once or twice playing around with some Knife Edge stuff But Ill try it all next time LOL

 

[babathehutt]

Basically the effect you are looking for is to keep the air from slipping off the wing tips. The SFGs act as a stall fence and trap the air on top of the wing. It effectively raises your stall angle and will calm the wing rock down at high alpha. I have found though that sometimes SFGs can make inverted harrier a little wacky, and I'm not sure I know why.

 

[Skyluc]

+1 for the SFG and keeping the nose higher

 

[Terryscustom]

I have to also disagree with the aileron mix to point them up. It does work but it also teaches bad habbits and if you get out of control for any reason things can get exciting real quick.

 

[Jetpainter]

I have to also disagree with the aileron mix to point them up. It does work but it also teaches bad habbits and if you get out of control for any reason things can get exciting real quick.

"Out of control" now that sounds like my flying right there.

 

[Skyluc]

ailerons mix pointing up is very usefull if you want to perform very violent lomcevaks/crankshafts