Wikimedi'Òc

Top-view silhouettes of Boeing microfighter concepts.png - Petebutt

Boeing Concept Supersonic Aircraft - Icon-II.jpg - Huntster

Boeing advanced blended wing body concept 2011.jpg - Huntster

Boeing SUGAR Volt concept aircraft 2010.jpg - Huntster

Boeing Aeritalia Quiet Short Haul Jet (P47696).jpg - Chesipiero

NASA Ames SUGAR wind tunnel tests.jpg - Marc Lacoste

NASA Ames SUGAR wind tunnel tests-front.jpg - Marc Lacoste

Boeing advanced blended wing body concept 2011 (cropped).jpg - Huntster