Helicopter Aviation - This site deals with the aerodynamics of helicopters, instruction on how to fly helicopters, mechanical components, and helicopter maneuvers.
Helicopter Zone - Provides links to helicopter sites, animated helicopter GIFs, photographs, and downloads.
How Helicopters Work - Photos and many brief videos in this narrative help to describe helicopter controls, capabilities and complexity.
Hummingbird Project - Hummingbird is a small research helicopter, at Stanford University's Aerospace Robotics Laboratory, which navigates using an integration of the Global Positioning System with computer vision.
