Recent content by southshorerat
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High School An arrow vane claim (fletchings as airfoils)
No I provided information so you could understand my original questions and apply physics to two questions 1 Can a vane that has an airfoil design produce lift 2 Can an arrow spin fast enough to produce gyroscopic precession- southshorerat
- Post #9
- Forum: Mechanics
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High School An arrow vane claim (fletchings as airfoils)
Please refer to the portion of this PDF concerning arrowflight 101 Do the theories concerning circular lift and gyroscopic precession hold true- southshorerat
- Post #7
- Forum: Mechanics
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High School An arrow vane claim (fletchings as airfoils)
http://org.firenock.com/pdf/2020_Catalog.pdf- southshorerat
- Post #6
- Forum: Mechanics
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High School An arrow vane claim (fletchings as airfoils)
Disregard my last post it did not load correctly- southshorerat
- Post #5
- Forum: Mechanics
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High School An arrow vane claim (fletchings as airfoils)
He also claims the vane design creates lift which I accept My problem is he also says the vane will cause the arrow to spin 200 time within 60ft of flight How can something spinning efficiently use lift produced by the vane He claims the arrow develops a gyro effect- southshorerat
- Thread
- Replies: 9
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
Tom, some archers feel that if you can locate the front node which we call the Centre of Mass also called the front nodal point of the first transverse bending mode and set it on an arrow rest that drops away at the beginning of the shot you can improve the shooter/bow consistency. The method...- southshorerat
- Post #20
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
A few years ago bows were slow compared to today. We are seeing compound bows shooting arrows in excess of 350 feet per second and some crossbows are shooting over 400 feet per second. The arrows of a few years ago don't do well with these very aggressive bows so the need to understand arrows...- southshorerat
- Post #17
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
We can use any terminology that will work. If we need to call the Centre of Drag and the Centre of Mass the two nodal points of the first transverse bending mode of the arrow I am fine with that. I thought there may be a difference in terminology when I began the thread. Is there a formula that...- southshorerat
- Post #15
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
Here is a drawing of the anatomy of an arrow. if you were to push the arrow across the edge of a table it would fall but this would show you the FOC balance point not the Centre of Mass.- southshorerat
- Post #11
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
The FOC balance point is where the arrow shaft balances at rest after it is built. It is determined by the weight of the nock, vanes point and Grains Per Inch of the shaft. An arrow with a very heavy point will have the FOC balance point closer to the front than an arrow with a light point. This...- southshorerat
- Post #10
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
Correct! For the sake of this discussion the FOC point will only come into play if it is needed to construct a formula to identify the Centre Of Mass location. Here is another point about why I am interested in this, When an arrow is shot from the bow it begins to flex as soon as the string...- southshorerat
- Post #7
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
One additional comment, the Centre Of Gravity or Balance Point is the Front Of Center Location- southshorerat
- Post #6
- Forum: Mechanics
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Undergrad I have a question about the physics an arrow
Hello I am new here an the only thing I know about physics is how to spell it. So if you folks would be so kind I have a question. It is about archery and arrows. Years ago when bows were slower you could shoot about any arrow with little difficulty. Today as bows are becoming much more...- southshorerat
- Thread
- Physics
- Replies: 20
- Forum: Mechanics