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World records (Read 42839 times)

Archaic Arms

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Testing and inventing
"Archaic" weapons.

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Re: World records
Reply #165 - Nov 26^th, 2021 at 8:33am

Curious Aardvark wrote on Nov 26^th, 2021 at 7:57am:

Well if you've got sufficient spin there is lift.
A clockwise spin should cause it to rise diagonally to the right, and anticlockwise spin should cause it to rise to the left.

So while it won't go in a straight line, it should still rise.

Found this on Wikipedia:
"The Magnus effect can also be found in advanced external ballistics. First, a spinning bullet in flight is often subject to a crosswind, which can be simplified as blowing from either the left or the right. In addition to this, even in completely calm air a bullet experiences a small sideways wind component due to its yawing motion. This yawing motion along the bullet's flight path means that the nose of the bullet points in a slightly different direction from the direction the bullet travels. In other words, the bullet "skids" sideways at any given moment, and thus experiences a small sideways wind component in addition to any crosswind component.[24]

The combined sideways wind component of these two effects causes a Magnus force to act on the bullet, which is perpendicular both to the direction the bullet is pointing and the combined sideways wind. In a very simple case where we ignore various complicating factors, the Magnus force from the crosswind would cause an upward or downward force to act on the spinning bullet (depending on the left or right wind and rotation), causing deflection of the bullet's flight path up or down, thus influencing the point of impact."

Regards,
Lewis

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NooneOfConsequence

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Re: World records
Reply #166 - Nov 27^th, 2021 at 12:23am

Best primer on spin drift (Magnus Effect)

https://youtu.be/OCA1njSxgv4

…and a bonus demo from yours truly:

https://youtu.be/4QEbyCOaZg4

“My final hour is at hand. We face an enemy more numerous and cunning than the world has yet seen. Remember your training, and do not fear the hordes of Judas. I, without sin, shall cast the first stone. That will be your sign to attack! But you shall not fight this unholy enemy with stones. No! RAZOR GLANDES! Aim for the eyes! May the Lord have mercy, for we shall show none!“ -Jesus the Noodler

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Sarosh Interfector Viris Spurii Offline Posts: 1140	Re: World records Reply #167 - Nov 27^th, 2021 at 3:47am https://youtu.be/OL_MgJT03nw?t=314 I called it "angle of attack curve" in the video later I realized it is called spin drift
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