Diagrams, tables, and photos for practical articles

Last updated April 13 2005

 

Time-based plotter for light aircraft navigation, optimized for 90 knots groundspeed: the time to any point on a standard aircraft sectional chart can be read directly off the bottom edge of the plotter.

Time-based plotter: time to a point at the "26" index, at a groundspeed of 60 knots, is 39 minutes.

Time-based plotter: time to a point at the "26" index, interpolating for a groundspeed of 65 knots, is 36 minutes.

Time-based plotter: time to a point at the "26" index, at a groundspeed of 135 knots, is 17.5 minutes.

Time-based plotter: time to a point at the "26" index, interpolating for a groundspeed of 125 knots, is 18.5 minutes.