Hi I'm working on a project where I need to develop a flight path to cover a circular area. I was thinking of having the plane follow an archenemies spiral. I found that the general equation in polar is r=a(theta)^1/n My question is if I have a specific distance I want each spiral to be from the last how do I input that into the equation. Also is there a Cartesian equation for the spiral? Edit: Also how does one calculate the arc length of the spiral?