Four Forces lets pilots, or anyone else who might be interested, explore the "four forces" of flight - Weight, Lift, Drag and Thrust. You "fly" an aircraft (in two dimensions only), and the magnitude and direction of each force is shown graphically on screen. You control the aircraft using intuitive "pitch and power" sliders.

This is work-in-progress so please try it out and mail me with any bug reports, suggestions, comments etc.

Here's the download: fourforces.exe (80Kb, Win9x/2k/NT/ME only.)

Screenshot: Aircraft 1 on the left is straight and level, Aircraft 2 on the right is pulling into a steep climb:

Last updated: 9 July, 2003