The Shop > Electronics & IC Programing
Mad strobe?
awemawson:
Steve,
You will be doing this experiment "in vaccuo" won't you to eliminate elevation issues :lol:
vtsteam:
Andrew,
uhhhhhhhhhhhh...... i don't get it :scratch:
vtsteam:
I'm sensin' a soittin mismatch between what I'm trying to say and the picshure of what I be aimin for in this here pixure takin strobe thingy. Since a pigsure is woit a thousand woids, lemme jes sketch this out fer ya's. See, da arrow flight is irrelephant:
vtsteam:
And when I have that for a particular bow and a certain weight arrow:
Distance traveled by arrow between any two strobe flashes divided by time interval of strobe flashes equals instantaneous velocity of arrow at that point. D/T = V
Difference between velocity at any two strobe flashes divided by time interval equals instantaneous acceleration.
deltaV/T = A
Mass of arrow multiplied by instantaneous acceleration equals the force applied by the bow at that instant.
MA =F
Charting the above force data over time will give a curve representing the true picture of the bow's firing cycle characteristics with an arrow of that mass.
Using arrows of different masses and charting those curves will give a picture of how mass affects that bow's performance.
The photos will also reveal if and when an arrow of a specific mass outruns the string, and many other points of interest to me.
The instantaneous velocity and acceleration/deceleration of the bow's limb tips can also be charted.
Synchronization (or lack) between the limb tips will be visible. Overshooting will be visiple. Terminal velocity of the arrow can be determined, etc. etc.
All these results will not be theoretical estimation, mathematical models, or opinions. They will be measurements of the actual power curve delivered by a particular bow, with all anomalies retained and displayed.
if it works..........that is :lol:
awemawson:
Steve it was a tail tweak!
You perform certain experiments in a vacuum to eliminate variables introduced by the density of the air at differing altitudes and pressure conditions.
I doubt whoever fires the bow would appreciate the vacuum!
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