Other
Ushga Inc. Frequently Asked Questions
Questions are answered about the effects of wing gradients, stalls, and launch techniques.
Smithsonian Institution
Lemelson Center: Inventors' Stories: Paul Mac Cready
Article on the inventions of Paul MacCready, who developed the world's first human-powered flight machine, called the Gossamer Condor.
PBS
Pbs Teachers: Science Italian Style: Renaissance Machines
Investigate innovative machine designs of the Renaissance, then build a hang glider by following a set of instructions. Modify the design to create a model that can fly longer distances.