A Self-Defence Force training aircraft crashed after taking off from a military base in central Japan, Chief Cabinet Secretary Yoshimasa Hayashi said ...

During World War II the Douglas Aircraft Company in California was approached by Air Technical Service Command, US Air Force, for a design proposal under Materiel, Experimental Project MX-656 to ...

Had development finished, the X-66 intended to test whether a compound set of wings, , could generate better lift ...

NASA and Boeing are putting the Sustainable Flight Demonstrator X-66 on hold to focus on thin-wing research after two years ...