DARPA, the branch of the U.S. Department of Defense tasked with developing new technologies for the military, is looking to make "radical improvements" to futuristic, helicopter-type vehicles that are designed to take off, hover and land vertically.
DARPA, the branch of the U.S. Department of Defense tasked with developing new technologies for the military, is looking to make "radical improvements" to futuristic, helicopter-type vehicles that are designed to take off, hover and land vertically.