It’s got the usual trappings of a drone, but with only a single rotor ... now and sort out the details later for this ducted-fan, thrust-vectored UAV. Whatever we choose to call it — builder ...

In the test flight, conducted Feb. 24, the company flew the drone, which is 8 feet (2.4 meters) long and weighs ... using 80% of the RDRE’s available thrust. The successful flight proved the ...

According to its developers, the new engine can reach altitudes above 49,213 feet (15,000 meters ... ideal for drone use. Whether or not this new 1,322-pound (600-kilogram) thrust turbofan ...