U-plane

[imperfectgolfer]

Consider Brian's comments in this thread.

www.brianmanzella.com/forum/golfing-discussions/13171-blog-lets-list-all-scientifcally-correct-concepts-golfing-machine-6.html

A forum member asked Brian if Homer Kelley got the ball flight laws right.

Brian answered as follows-: "Hell no. He whiffed on the resultant path of the "U plane."

In which sense did Homer Kelley get the resultant path of the U-plane wrong?

Jeff.

[gmbtempe]

What is the U-plane?

[Richie3Jack]

HK states to the effect that the ball initially goes in the direction in a right angle of the face at seperation. That doesn't consider the 15-30% effect that the path has on the intial direction.

I really don't understand U-Plane, but one part where HK didn't get the ball flight laws correct was how much the path effects the initial direction.





3JACK

[johngrahamgolf]

Mar 2, 2010 22:48:56 GMT -5 Richie3Jack said:

HK states to the effect that the ball initially goes in the direction in a right angle of the face at seperation. That doesn't consider the 15-30% effect that the path has on the intial direction.

I really don't understand U-Plane, but one part where HK didn't get the ball flight laws correct was how much the path effects the initial direction.





3JACK[/quote

I believe the U Plane is Brian term for the 3d path of the clubhead as it related to AoA and VSP.

I have no idea what HK said about determining the 3d path of the club but that's what the U Plane is.

[imperfectgolfer]

Here is a BM thread on the U-plane.

www.brianmanzella.com/forum/golfing-discussions/12358-u-plane-d-plane.html

The U-plane is merely the clubhead's in-to-square-to-in path (relative to the HSP) superimposed on the inclined plane - so that it can correctly be perceived in its "true" 3-D reality.

I am certain that Homer Kelley could mentally picture the 3-D motion of a clubhead in space, so I think that it is incorrect to state that Homer Kelly didn't understand a clubhead's U-shaped path in space. However, if the phrase "resultant path" refers to the ball flight path, then Brian could be correct to state that Homer didn't understand the interplay between a clubhead's "true" path and the clubface orientation at impact on a ball's flight direction after ball-clubface separation.

Jeff.

[mudball]

Mar 3, 2010 1:09:58 GMT -5 imperfectgolfer said:

Here is a BM thread on the U-plane.

www.brianmanzella.com/forum/golfing-discussions/12358-u-plane-d-plane.html

The U-plane is merely the clubhead's in-to-square-to-in path (relative to the HSP) superimposed on the inclined plane - so that it can correctly be perceived in its "true" 3-D reality.

I am certain that Homer Kelley could mentally picture the 3-D motion of a clubhead in space, so I think that it is incorrect to state that Homer Kelly didn't understand a clubhead's U-shaped path in space. However, if the phrase "resultant path" refers to the ball flight path, then Brian could be correct to state that Homer didn't understand the interplay between a clubhead's "true" path and the clubface orientation at impact on a ball's flight direction after ball-clubface separation.

Jeff.

OK I thought the problem was to the degree path or clubface influenced the ball flight. I think it was well understood they did but got the amounts incorrect. Apparently through use of technology we can measure the amount of face angle open'closed and the resultant path - which Homer couldn't do way back then.

My whole problem with the topic of ball flight laws and which I've discussed with John Graham who gets this stuff and tries to help others (like me) underastand it - is not the concept of effect on ball flight of club and path but the practical application on the golf course from uphill lie with a wedge to downhill lie feet slightly above ball with a 4 iron... that's what I want to know - how to apply these ball flight laws in a quick and easy method to produce results. I don't have a trackman with me when I play in the monthly medal ?