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X-48B remotely piloted aircraft, USA, 2010. NASA engineer Gary Cosentino prepares the X-48B for flight. Researchers used the remotely piloted subscale X-48 hybrid/blended-wing-body (BWB) aircraft to explore concepts for cleaner, quieter commercial air travel. A two-phase technology demonstration research effort supported NASA's goals of reduced fuel consumption, emissions, and noise. X-48B remotely piloted aircraft, USA, 2010. Creator: Tony Landis. (KEYSTONE/HERITAGE IMAGES/HERITAGE SPACE)