Newston's ballistic equations solved...


PDA






sirgilligan
May 28, 2012, 08:59 AM
http://www.theblaze.com/stories/german-teen-solves-mathematical-riddle-first-proposed-by-sir-isaac-newton/

I have to look up this solution. It took me two months to write my ballistics calculator in Gun Log. I am very curious what he solved. Currently the plot of a bullet's drag is discontinuous, and thus requires a solution that is done "step by step".

A great story of a young man applying himself to a problem.

If you enjoyed reading about "Newston's ballistic equations solved..." here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
56hawk
May 28, 2012, 10:20 AM
When I took differential equations we solved projectile motion for the cases of drag being a function of v and vē. Wonder what he solved, and how it fits the empirical data.

YankeeFlyr
May 29, 2012, 12:00 AM
Yeah, he might have figured out how to get around varying BCs with varying velocities...?

45crittergitter
June 2, 2012, 03:50 PM
It's been a while since I actually derived the typical ballistics formula for my own edification, but if memory serves, the main problem is that the formula is inexact/incorrect, and is "corrected" by use of the BC (which is itself a variation of a form factor). But any given BC cannot always correct for the variations caused by the incorrect formula, so the results are just good approximations. The use of multiple BCs may generate more accurate results, but are just treating the symptom, not the problem. You may wish to read up on the various "G1," "G2," etc. form factors used to establish BCs. I'm unfamiliar with the new discovery, and haven't seen any specific info on what the breakthrough was, but will look into it one day.

If you enjoyed reading about "Newston's ballistic equations solved..." here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!