Under the auspices of the U.S. Defense Advanced Research Projects Agency (DARPA), four companies are now designing prototypes of an experimental vertical takeoff and landing (VTOL) military aircraft. As reported today (Dec. 28) in Defense News, the contestants’ final design, prototyping, building and demonstration of the vehicles is expected by early 2027 as part of the Speed and Runway Independent Technologies (SPRINT) program.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/darpa-launches-sprint-competition-with-four-contenders