![bell eagle eye bell eagle eye](https://img1.cgtrader.com/items/2827831/d07e7fc9a4/bell-tr-911-x-eagle-eye-tilt-rotor-uav-3d-model-low-poly-obj-fbx-blend.jpg)
All of the hard points and mounts were installed by Scaled and all the system components including engine, transmissions, oil coolers, avionics, flight control systems, flaps, and control surfaces were mounted and checked for clearance, interference and fit in the fuselage structure before the vehicles were delivered to Bell. The tail contains numerous antenna and actuators for the pitch control surfaces. The removable tail was attached with a simple lightweight screw row. Access to the center section is through the removal of the entire top section of the fuselage. The center section incorporated the wingbox, fuel tanks engine and landing gear. The nose section was mounted on hinges to allow easy access to the avionics and other mission equipment. This was done to allow for a reduction in overall length during transport and storage. The composite sandwich fuselage featured three removable sections the nose, center section and tail. An additional challenge was to make the wingbox a fuel tank (wet wing), while preserving the dry integrity of the transmission drive shaft conduits. The cantilever wing box experiences very diverse structural loads during hover and conventional forward flight.
![bell eagle eye bell eagle eye](https://ak1.ostkcdn.com/images/products/is/images/direct/f31c11c800edd72b3559727ea708e73b9a9e366e/iCanvas-"Eagle-Eye-Patriot"-by-Juliana-Loomer.jpg)
The wingtips house the transmission as well as the actuator used to tilt the wingtip transmission and rotor assemblies. Drive shafts from the combining transmission pass through the center of the wing and connect to transmissions at each wingtip. Its gas turbine engine (an Allison C20) is mounted in the center fuselage and is attached to a combining transmission. Scaled Composites was selected to design and fabricate the composite structure for the two demonstrator airframes, including the landing gear, and to integrate Bell-supplied propulsion and flight control systems.īecause of its dual requirements to both hover and to fly as a conventional aircraft, the Eagle Eye required a very complex structural arrangement. The Bell Eagle Eye TiltRotor UAV demonstrator was developed to validate and refine basic flying qualities and performance characteristics of a small scale Tiltrotor with the potential for future applications to VTOL UAV missions. Bell "Eagle Eye" helicopter - development history, photos, technical data