http://www.indiegogo.com/projects/makerplane-v1-0-open-source-aircraft
First open source plane
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Boarding those in window seats first followed by middle and aisle seats results in a 40% gain in efficiency.
http://www.reuters.com/article/2011/08/11/us-usa-defense-hypersonic-idUSTRE77A5RN20110811
An unmanned experimental aircraft designed to glide down from the upper atmosphere at 20 times the speed of sound lost contact with ground control on its second test flight on Thursday, a Pentagon agency said.