For all those space based solar power enthusiasts that I know are out there you might be interested in Reaction Engines’ report Solar Power Satellites and Spaceplanes: The SKYLON Initiative.
It is one of a number of updates to the website in the latter half of this year that has seen a flurry of activity for the small UK firm, including opening a new factory, moving offices, acquiring engineering companies and REL founder Alan Bond’s Royal Aeronautical Society Brabazon lecture
credit Reaction Engines / caption: The Skylon personnel cum logistics module concept
For keen followers of the single stage to orbit Skylon vehicle there is also a user’s guide for the C2 version of the spaceplane on the REL homepage. However Hyperbola understands that a D1 version is in the pipeline with substantially more capability. Go here for more technical detail about Skylon technical issues