Roll component in round manuevers

At the top of inside loops, the plane rolls inwards towards the circle, and I can see all of the BOTTOM of the wing. I get the same inward roll on outside loops, such that I can see the entire TOP of the wing. This is at the top of both loops when the plane is at 45 degrees, or higher.

Wing is level, both right side up and inverted.

The plane is a Prowler, OS 40, and all other trimming conditions are nominal....CG, lap times, etc. Center of leadouts is 1" to 1 1/8" behind CG.

Here's a tip for you. I made 5-6 practice flights yesterday, and I documented each flight. I wrote down what parameter was changed (only one at a time, of course) and what the effect was. It helped me enormously in having a clear understanding of what was going on with the trimming flights and how each variable effects the way the plane flys. It takes a little time to make notes, but it's well worth the effort.

Cheers,

>I'm out there practicing like crazy
>getting ready for the nats,
>and I noticed a flaw
>in the tracking of my
>plane.
>
>At the top of inside loops,
>the plane rolls inwards towards
>the circle, and I can
>see all of the BOTTOM
>of the wing. I
>get the same inward roll
>on outside loops, such that
>I can see the entire
>TOP of the wing.
> This is at the
>top of both loops when
>the plane is at 45
>degrees, or higher.
>
>Wing is level, both right side
>up and inverted.
>
>The plane is a Prowler, OS
>40, and all other trimming
>conditions are nominal....CG, lap times,
>etc. Center of leadouts
>is 1" to 1 1/8"
>behind CG.
>
>Here's a tip for you.
>I made 5-6 practice flights
>yesterday, and I documented each
>flight. I wrote
>down what parameter was changed
>(only one at a time,
>of course) and what the
>effect was. It helped
>me enormously in having a
>clear understanding of what was
>going on with the trimming
>flights and how each variable
>effects the way the plane
>flys. It takes a
>little time to make notes,
>but it's well worth the
>effort.

To first approximation, you have too much tip weight. You might watch, or have someone else watch, for the same thing in the squares. Usually it will be worse. If so, then you have your answer. If not, then it's probably a more complex interaction with the yaw angle, that I would be a little hesitant to diagnose without more details.

If it's flying otherwise well, I wouldn't worry too much about it.

If you're going to the NATs, and you'll be around all week. find me at some point and I'll look at it.

> To first approximation,
>you have too much tip
>weight.

I'm running what I think is a modest tip weigh. I've varied the range from 0.5 oz to 1.0 oz. The Prowler is 110% sized, so it has about 630 sq in of wing area, and equal length wing panels.

If I do a wingover and pull out at about 45 degrees, I do see a little drop of the outside panel.

Line length is 60 feet E/E.

If it's rolling outboard, it has too much for the other trim settings. The specific amount doesn't necessarily mean anything unless you balanced the airplane laterally before you started. The effective tip weight can be found by seeing how much weight it takes on the inboard wing to balance it level. Profiles typically take very little weight since the hardware is mostly on the outboard. side of the centerline. I've seen cases where weight on the inboard wing was needed to get rid of the roll.

I think you are probably not too far off at all, so I would go very easy on the adjustments. If it's not hinging noticably in the squares, then it's probably OK as is.

Once again, I'll be happy to look at it at the NATs, just come find me.