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Search found 1498 matches

by Walter
Fri Jul 19, 2019 12:55 am
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Miscellaneous (bead chains, string shooter, whips)

Horses have lift

Image


But I thought the thread was turning into a discussion about free energy.
by Walter
Thu Jul 18, 2019 6:01 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

So please help me design an experiment that will prove this lift exists. Graeme, Maybe an enterprising student could demonstrate the dependence of the lift observed in a string shooter loop on aerodynamic drag effects by putting the shooter in a partial vacuum and measure what it does to the levita...
by Walter
Thu Jul 18, 2019 5:31 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

Even with the downward trajectory the end of the whip kicks up when it enters the loop. I'm surprised Gordy didn't see that. Walter, What else could it do? I am interested in why the top leg in the whip does not rise and become more horizontal as the loop is propagating as it does for the lighter l...
by Walter
Thu Jul 18, 2019 5:06 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

Magnus wrote:
Thu Jul 18, 2019 4:56 pm
from about 14:43

And of what is that arrow an indicator?
It looks like the velocity vector for the nose of the loop.
by Walter
Thu Jul 18, 2019 4:57 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

You are welcome James.

Even with the downward trajectory the end of the whip kicks up when it enters the loop. I'm surprised Gordy didn't see that.
by Walter
Thu Jul 18, 2019 3:02 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

The video is here:



The segment from 7:30 to 7:40 gives a great view of it.
by Walter
Thu Jul 18, 2019 2:42 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

Gordy,

Maybe you should show the entire whip roll out...
by Walter
Thu Jul 18, 2019 2:39 pm
Forum: Flycasting Physics
Topic: Excellent FP on modeling
Replies: 45
Views: 7364

Re: Excellent FP on modeling

:D Excellent points Grunde! Adding to the mindset, any useful models I’ve ever used stated the assumptions and boundary conditions. Of course, as Graeme pointed out, these often get ignored until something goes wrong. One of the things I’ve advocated for in the past is some sort of statement of assu...
by Walter
Tue Jul 16, 2019 3:58 pm
Forum: Flycasting Physics
Topic: Miscellaneous (bead chains, string shooter, whips)
Replies: 39
Views: 5610

Re: Lift force acting on a fly line

For example, would the numeric modelling show it would be theoretically impossible to cast a loop in a 15 metre length of light-weight chain? Graeme, I tried casting a shorter length of metal bead chain but my rod could not handle its heavy mass. I have cast about 5 m of plastic bead chain as shown...
by Walter
Tue Jul 16, 2019 1:24 pm
Forum: Flycasting Physics
Topic: Lift force acting on a fly line
Replies: 321
Views: 25197

Re: Lift force acting on a fly line

After 30 pages on the subject I wonder if anybody has read this: https://paperplanemafia.com/how-do-paper-airplanes-fly/ Or this: https://en.m.wikipedia.org/wiki/Lift_(force) I especially like this bit: “ How simpler explanations fall short Producing a lift force requires both downward turning of t...

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