I am very sorry to repeatedly post on this topic, but please what web sites have good information on Felix Baumgartner's rigid wings, and similar, and any possible mtorized version of them. I was advised to web search for "Skyray"; which I have now done, and there are so many different sorts of things and people called Skyray that any references to backpack gliding wings were drowned in over 2000 references to irrelevant matter, despite whatever I chose as a second accompanying search term.