Tip Stall
 

Hi All,

I am fairly new to the hobby. Started last April. I have one electric trainer and three 60 size glow planes. So far they all have survived the summer, with out to many bad events, but I have a question some of you may enlighten me on. The dreaded TIP STALL. After viewing numerous videos and reading many forum posts the tip stall claims many planes. I know that the tip stall happens when the end of the wing loses its lift and the plane drops to that side. But what is the main cause. Is it poor flying on the part of the flier? Is it an improperly built plane? Are some plane designs prone to tip stall? OR ALL OF THE ABOVE???

SORRY, i JUST DID A SEARCH IN THIS FORUM AND FOUND MOST MY QUESTIONS ANSWERED. sHOULD HAVE DONE THAT FIRST! DAAAHHH. I tried to edit this post out but coudn't seem to do it.

RE: Tip Stall
 

Some models are very hard to stall no matter how lackadaisical you get with respect to airspeed or wind direction. These planes have low wing loadings, much lower than your typical sport planes have.

The guys who are the masters of flying models with higher stall speeds are good judges of speed but can still get bit once in awhile.

These are the same guys who think most crashes are caused by pilot error.
Live by the sword..........

RE: Tip Stall
 

Hi Tacx, you highlighted actually a good point and I'm sure there are many out there that had their question answered.

It depends mostly on the plane design, quality of the kit and how well (accurate) it was build. Flying wings (i.e. Horten etc) can be notorious for tip stalls. To offset that we add "washout". My Horten III have 10 deg washout. The idea being to have the wingtip leading edge point slightly down (angle) so the angle of attack is less, thus it wont stall before the main wing stalls.
My Miss Liberty Sport (Aerobatic Bipe) have 1.5 deg on the bottom wing to help with tip stall.

Aerobatic/fighter planes are designed to be inherently unstable in order to be manouvreable.

But normally it is all sorted out in good quality kits and you don't have to worry about it - some cheap Asian "copy" kits can be real dogs to fly and impossible to fix.

Enjoy practical hands on flying and don't break your head with too much aerodynamic theory worries and scares........ it's dark science and there are many theorists.... :)

Sometimes Terra Firma does jump up and slaps a plane out of the air for no reason at all..

Enjoy your flying

RE: Tip Stall
 

tacx,

We have discussed that recently.

Here is the link:

http://www.rcuniverse.com/forum/m_8947745/tm.htm

Regards!

RE: Tip Stall
 

Tacx, I can close the thread if you're happy with the answers you found already. Just reply here.

RE: Tip Stall
 

Tacx.

Thanks for letting us know you did your reasearch & it helped. :D

RE: Tip Stall
 

Yes, Thank you, My question has been answered