Most people think a powerless helicopter drops straight out of the sky. In reality, it autorotates—using free-spinning blades ...
NASA has delayed the first flight of its Ingenuity Mars helicopter to Wednesday. A crucial test to spin Ingenuity's blades at full speed ended abruptly due to a "watchdog" timer. It's not clear what ...
Emergency personnel work at the scene of the helicopter crash on the Hudson River on Thursday. (Eduardo Munoz/Reuters) A sightseeing helicopter broke apart in midair and plunged into the Hudson River ...
The Ingenuity Mars helicopter has been more successful than anyone dared hope, lasting far, far beyond its originally planned five flights. The little helicopter recently made its 66th flight and has ...