Proprotor blades stop and fold back and propulsion transitions from turboshaft to turbofan to accelerate the X-76 to speeds ...
DARPA has assigned the designation X-76 to the Speed and Runway Independent Technologies (SPRINT) project, a Bell ...
Planned to fly in 2028, the X-76 will explore technologies for fast-flying runway-independent aircraft with folding rotors, crewed and uncrewed.