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Unread 22-02-2012, 16:58
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Re: Trajectory Calculator (W/ Drag)

Quote:
Originally Posted by Lalaland1125 View Post
Our plan is to simply do the simple drag-free formula for an initial guess, and then slowly increase the velocity till the non-reversible drag including formula "hits" the target.
Quote:
Originally Posted by gnunes View Post
The problem is that there is no "formula" for the case where drag is included.
For a drag model where drag is either linear or quadratic in velocity, I believe there is a closed form solution* for height, given distance, launch angle, drag coefficient, and launch velocity. So you could vary the launch velocity and calculate the height until the height is the desired value.

I'm not saying that's the best way to do it, but it could be done.


* I haven't checked it. It's rather ugly.