Free to use R/C Flight Simulator, FlyRC., should work well on 486-dx2 class machines and better.

Now at version 2.4 ( updated 5/23/01 )

Features:

• 640x480 vga graphics
• Selection of 31 ( and growing ) different plane designs.
• Directions for designing your own plane. Rasmus has instructions online in English and Swedish.
• Keyboard control, and 2 to 4 axis Joystick Control and
• 4 axis control via your RC transmitter and a simple to build interface( uses 2 resistors and 1 transistor ).
• Support program for debugging transmitter interface setup.
• Simple and effective flight models. Trainer type characteristics with 3 channel setups. 4 channel flight models for more advanced flyers. Flight parameters are in easy to edit text files.
• The README file describes program operation and changes.
• The RADIO.txt file describes the radio interface setup.
• Suggestions and comments, email to acarr at pivot.net