Positive wing wash-in dynamic soaring one side

[ds3227]

Hello,
While dynamic soaring 3 of my rc ships seem faster in left tilted loops with left wing washin not just the tip.
No rolling tendency is noted why is this. This is slow speed just 70 mph.

I wonder what would happen with this setup on a large ds location.
Is a tilted loop the same as a vertical loop.
Why wont it roll right during pull up

 

[.Scott]

When last I soared, it was in a Schweizer 2-22 - 3 or 4 decades ago.
Sail planes are generally aerodynamically left-right symmetric, so the major performance difference between doing dynamic soaring loops with left and right turns should be operator skill.
I have also done some aerobatic flying. In that community, a vertical loop is called an "inside loop" - or, if you're pushing instead of pulling, an "outside loop". RC's may be different, but with sailplanes, inside or outside loops would never be part of a dynamic soaring strategy.

I realize that with RCs, you can't wander too far without loosing control. But with regular soaring, on any clear summer day in Virginia, I was able to find ample thermals to keep me up. I always returned to the airport because my time slot on the rental had expired.

One more thing: You mentioned "wash in". I think what you are saying is that your RC models use wing wash-in control instead of ailerons.

After rereading this OP, I think you are describing a situation where the wash-in roll control is not working properly. Have you tested this on the ground?

 

[Filip Larsen]

You mentioned "wash in". I think what you are saying is that your RC models use wing wash-in control instead of ailerons.

Or perhaps the OP is referring to reverse washout.

I have trouble parsing that post though. Is the question about airspeed or vertical speed in the thermals? Or something else perhaps? I assume "left tilted" means "banking left".

 

[.Scott]

Or perhaps the OP is referring to reverse washout.

Yes. Wing wash-out is used to keep the ailerons useful as the plane enters a stall.
From what I gather, he is using "washin" (ie, flexing the wings beyond the wing roots) in lieu of ailerons - just to make the mechanics of RC glider simpler.

I have trouble parsing that post though. Is the question about airspeed or vertical speed in the thermals? Or something else perhaps?

Actually, after re-reading the OP - I notice that "No rolling tendency is noted why is this." isn't just a statement, it's a statement followed by a question.
I'll edit my response - I think his RC is not functioning correctly.

I assume "left tilted" means "banking left".

No. The overall context is "Dynamic Soaring" - so he is looking for opportunities to harvest energy from the environment.
The "left tilted loop" is pretty much what it sounds like. Rather than a horizontal circle, one side of the path is much higher than the other side. I have never done this kind of RC work, but if you have a wind coming from the North and a clearing with a tree line to your North, then you can use the the fast wind for power and the still wind as a kind of anchor to hold you in place.
Instead of keeping to a single altitude, the glider is directed to climb over the leeward side of that tree line (or ridge or whatever) where the wind will push it back hard. Then it coasts around and does it again.

 

[Filip Larsen]

The overall context is "Dynamic Soaring"

That is also what I thought until you mentioned thermals and the text "thermal soaring" in the OP picture. But it sure makes more sense with dynamic soaring.

I have no experience with RC soaring, dynamic or otherwise, only thermal soaring in gliders (decades ago).

 

[.Scott]

That is also what I thought until you mentioned thermals and the text "thermal soaring" in the OP picture. But it sure makes more sense with dynamic soaring.

I was thinking that anything that kept you up was "dynamic soaring". But you're right Dynamic Soaring refers specifically to crisscrossing wind shear. So, it would be most useful when you have windspeed differences of ten+ MPH per hundred feet. Definitely the RC domain.

I have no experience with RC soaring, dynamic or otherwise, only thermal soaring in gliders (decades ago).

I also have my single engine private license, but sail plane were way more fun. Soaring is very opportunistic and there's no engine to worry about. Where I was flying, you could also get a bit of mountain wave on some days.

 

[ds3227]

No I'm using ailerons...just wondering if this work at higher speeds without a rolling out..... I I talked to who set record they theorized it would roll n crash above 200mph....