The video shows a Boeing 777 holding position on the runway while the engines spool up for a prolonged run-up. This procedure allows pilots and engineers to check engine performance before takeoff or ...

LONDON—Hill Helicopters, the UK startup developing the HX/HC50 single-engine light helicopter, has further delayed a planned first engine run of its independently developed GT50 turbine powerplant.

The NASA-59 supersonic demonstration team is conducting engine-run tests at Lockheed Martin's Skunk Works facility in Palmdale, California. © NASA/Carla Thomas ...

LONDON—British light rotorcraft developer Hill Helicopters has pushed back the timeline for the first run of its in-house-developed GT50 turboshaft engine and the first flight of the HX50 ...

Rolls-Royce intends by 2028 to be running two versions of its UltraFan demonstrator engine – one for widebodies and the other for single-aisles – with flight tests to follow by the end of the decade.