Solved

# Realistic Ballflight

Posted on 1998-10-06

Hello All,

This is a math \ geometry problem, but don't let that put you off. If we have any number crunchers in our midst, perhaps they'll like to play with this...

I am looking for a formula which will create a realistic ballflight using parameters of DistanceX and TakeOff Trajectory. I am currently using "y = (X * (dist - X)) / (dist * Trajectory)" and find this creates a symmetrical

path over which I have sufficient control.

However, this formula does not, of course, allow me to create a path in which the zenith is not absolutely central to the Xdisplacement. Ideally, this would occur somewhere around 2/3(?) of the distance.

I have considered using 2 formulae to derive the path, with the calculation being processed by the secondary routine after the xdisplacement reaches 2/3 total distance, but can't make it work properly.

I am convinced (but in no way informed) that I need the formula for an 'egg' shape, cut through at an offset angle.

If anyone has any knowledge of parabolas, trajectories, ballistics or amateur golf I would love to hear your ideas.

I think we can treat the mass of the ball as a constant, and ignore any wind effect, but it would be nice to add a parameter which modifies take off velocity.

Thanks in advance.