NEW YORK — An ultrafast U.S. military drone that streaked across the sky at nearly 21,000 kilometers per hour and met its demise in the Pacific was doomed by the excessive heat of hypersonic travel, ...
Aerodynamic design validated and new understanding of thermal material properties gained Following an extensive seven-month analysis of data collected from the Aug. 11, 2011, second flight of DARPA’s ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback