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Richard is a Computer Vision Researcher, head of the CV team. Thus, everything Richard does is correct, and everything Guy does is “cute” and “a nice attempt”.
This program can calculate your arrow speed, given two previously known sight marks.
plz some one help me out this project is due next tuesday and i have nothing.
I will keep gettin on this site to see if anyone has answered my question thank you.
It can also compute your other sight marks for FITA and other distances. have a good day pb Joe Tapley: Simple and pretty accurate - well done. PS: Joe, you drift program is excellent, it's amazing how good a model of arrow flight you made. Can it be tweaked to allow for sight marks where the distance between the eye and the sight pin changes (ie. ) Apostolos 20/05/07 : I think it could be tweaked for that but I have to find that piece of paper that I had all the equations written on..
Perriswood Dick 30/03/07 : I can see how the algorithm accounts for different arrow size/weight but where is limb/r1ser length and draw weight taken into account RLH Apostolos 01/04/07 : In fact, we don't care about the draw weight but only for the angle difference between the two distances. I was also thinking of doing another version that could calculate your arrow speed loss per meter given all of your sightmarks. Could you please help me figure out how to measure speed of an arrow (point blank) just with draw weight (45 lbs) and arrow weight (385 gr)?
It's very helpfull and so helped me to verifie my estimation of the speed of my arrows. But then thinking about the speed of most compounds (300 fps) this would make sense.
This would be the most accurate way to determine the speed for the particular setup you're using. Patrick Andresz 17/07/09 : Thank you very much for this nice programm ! Don Walker 22/09/09 : an excellent tool but for one thing! would it be possible to produce a version in Yards and diference in site marks settings in mm for old field archers Mark 25/09/09 : I didn't believe it when I looked at the numbers, as the difference between each 5M distance for time and sight markings seemed to be almost constant.I have studied balistics but have no luck with the maths. helped me with science fair Apostolis 13/01/09 : Thank you all for your comments. I am shooting field ranges where uphill/downhill calculations depend on arrow speed. Sam S44 22/03/09 : Can you give us Yards and inches?If I find some time, I will update the calculator with your suggestions. Joan Smith 05/06/09 : I was asked how fast an arrow travels so I Googled to find out.The only thing you need to know is the distance from your eye to the sight pin. I am trying to make a ballistic module for bowhunters, like yours but take also Ballistic Coefficient, but I cannot find out how to calculate speed at differents distance. I used Mathematica to find the solution and it's a formula 4 lines long.This is usually something around draw length sight extension but it's best if you measure it accurately. have to measure the distance from eye to scope to make sure it is accurate. Could you place a link to the formula you have used. Someday I will describe how it is done in a separate page.