China's R6000, one of the world's largest uncrewed tiltrotor aircraft, has entered full free-flight testing, marking a notable progression for developer United Aircraft as it moves beyond earlier tethered hover trials. 

Developed by the Chinese firm United Aircraft, the R6000 combines the vertical takeoff and landing capabilities of a helicopter with the speed and range advantages of a fixed-wing aircraft, officially aimed at logistics, disaster relief, offshore support, and other missions requiring access to areas without prepared runways. 

The aircraft can cruise at 550 kilometres per hour in fixed-wing mode, roughly double that of traditional helicopters. It has a maximum payload of 2 tonnes, a maximum range of 4,000 kilometres, and a service ceiling of 7,620 metres. 

The airframe runs 11.9 metres long with a rotor-to-rotor span of 17.4 metres. Unlike traditional tiltrotors that rotate the entire engine nacelle, the Lanying R6000 adopts an advanced tilting rotor shaft design, reducing risks to ground personnel and preventing thermal damage to maritime platforms. 

Footage circulating on Chinese social media shows the R6000 performing vertical flight maneuvers, including a pedal turn in hover, and transitioning to sustained forward flight with its twin proprotors fully tilted forward. Interesting Engineering

Sources: Interesting Engineering