(Ben Jackson) writes:

The tool that draws the route just uses the same technique any student
would; it draws a straight line. Sectional maps use the Lambert
Conformal Conic projection so a straight line should be close to
describing a great circle route.

Does that property of the LCC hold across large areas, like the whole
US?

Good question. I don't know the boundary conditions but certainly the
LCC does *not* work across "large" expanses. I think it can suffice
for the conUS, but the rotation required to stitch together the
sectionals might make it unusable in that way.

I suspect that I need to account for the rotations. I'll look into it
more.

Thank you.

--kyler