6 links
AVM Dynamics
avmdynamics.com
Symmetric Constellations, software for the design and analysis of satellite constellations
Chuck Yeager
chuckyeager.org
A complete resource for X-1, photos, video, and highlights of important events.
James' Hovercraft Picture Site
jameshovercraft.co.uk
Dedicated to the hovercraft of the world. Includes pictures, slide-shows and information on a range of craft.
UAV Center
uavcenter.com
Provides detailed information on unmanned aerial vehicles including historical perspectices, detailed technical data, and operatings system overviews.