All the World's Rotorcraft - Provides pictures and background from the first designs to current machines. Also offers dictionary and links to related resources.
Helicopter History Site - This site traces the evolution of rotary wing aircraft back to Leonardo Da Vinci.
Igor I. Sikorsky Historical Archives, Inc. - Dedicated to acquiring, preserving and protecting the historical materials that chronicle the aviation careers of Igor Sikorsky, the companies he founded and the accomplishments of its employees.
AVM Dynamics - Symmetric Constellations, software for the design and analysis of satellite constellations
Clean Sky - The European research project is expected to lead the earlier introduction of new, radically greener Air Transport products.
The German-Dutch Wind Tunnels - Facilities for aerodynamic and aero-acoustic testing on flight vehicle of civil and military aircraft, spacecraft and helicopters, full-size missiles, passenger cars and trucks, propulsion testing of turbofan engines and inlet models, propellers and prop-fans, etc.
James' Hovercraft Picture Site - Dedicated to the hovercraft of the world. Includes pictures, slide-shows and information on a range of craft.
Solar Impulse - Group is working to create a solar airplane that can travel around the world during the day and night. The goal is to create a more fuel efficient airplane. Page includes history of this type of aircraft and history of the project. [French, English, German]
Test Pilot Stuff - A Canadian Air Force test pilot describes this unique profession.
UAV Center - Provides detailed information on unmanned aerial vehicles including historical perspectices, detailed technical data, and operatings system overviews.