With the rotor stopped, the blades are stowed in the sled test at Holloman. Credit: Bell Bell has completed sled tests of the stop/fold rotor concept for a high-speed vertical-takeoff-and-landing ...

Proprotor blades stop and fold back and propulsion transitions from turboshaft to turbofan to accelerate the X-76 to speeds of about 400 kt. Credit: Bell The stop-fold tiltrotor uncrewed aircraft ...

Bell showcased High-Speed Vertical Takeoff and Landing (HSVTOL) technology capabilities upon completion of testing efforts at Holloman Air Force Base. The team has utilized the Holloman’s High Speed ...

The Bell X-22 was a ducted fan VTOL aircraft created to explore a new path between helicopters and conventional airplanes. With four tilting ducted fans, stable hover performance, and promising ...

Bell Helicopters' SPRINT design. Although SPRINT is designed to lift a 5,000 lb payload, the design could be scaled up to carry heavier cargo or personnel. (Bell Helicopters) The US Defense Advanced ...

There will come a time in the near future when aircraft will seem like nothing we presently have at our disposal. From stranger and stranger shapes to increasingly insane capabilities, aircraft of the ...

Bell’s concept for an advanced tiltrotor-jet hybrid aircraft will move into the build stage of the US Defense Advanced Research Project Agency’s Speed and Runway Independent Technologies X-plane ...

It's currently in Phase 1B – the preliminary design stage, in which Aurora's fan-in-blended-wing design is competing against Bell's HSVTOL concept, which is more like a Bell Boeing V-22 Osprey ...