Aerial target preemption

[o-murphy]

Now I'm trying to implement the calculations of angle of preemption for shoting the aerial targets.

I started with simple trigonometric model to to calculate the bullet and target meet point using the calculated trajectory, initial barrel elevation, flight time. It does not claim to be highly accurate. I know that for this propose more complex solutionn is secvential finding an barrel angle where the trajectory with preemption will cross the point of bullet and target meet point.
But at the moment I only need approximate calculations, most parameters are leveled due to bullet spread, recoil and dynamic movement of the barrel during shooting.

So now I have approximately valid vertical preemption angle, but I have not find a solution to calculate horizontal preemption, beacause of changing the angle between target's horizontal flight plane and sight line, while target continue the flight

I have an input data same as for the common bullet trajectory calculation, and some additional as:

• target's flight direction
• target's velocity
• initial distance to the target
• initial look angle (pitch)
• target's length/width
• max preemption angle for the sight device (optional, to got a device limitations)

You can help me with this starting from this defenitions and this example

[o-murphy]

I already solved few problems of this case, also there are a chart which describes model that I use for calculations.

Note

This feature isn't directly included to the library yet