Let me X-plane: Boeing R&D unit sheds rudder, ailerons, flaps for DARPA project
DARPA has awarded Boeing research arm Aurora Flight Sciences a contract to build a full-scale demonstration aircraft for the experimental Control of Revolutionary Aircraft with Novel Effectors project.
The X-plane relies on active flow control , or the use of strategically placed actuators and effectors to alter the flow of air on the aircraft's surface to alter aerodynamic performance. These mechanisms replace traditional rudders, ailerons and flaps. They also reduce drag and weight, generate lift at a high angle of attack and allow for a change in the thickness of the structure.
In return for using AFC technology, designers can build a lighter aircraft with the hopes of reducing cost and improving safety.A preliminary design of the plane, complete with a wind tunnel test model, was finished by the company in phase 1.
For phase 2, Aurora was tasked with creating a more detailed design, complete with flight software and controls. This phase culminates in a critical design review of a full-scale 7,000-pound, 30-foot wingspan demonstration aircraft. In exchange, the Boeing subsidiary earns a cool $42.4 million. An optional third phase sees a built and functioning version of the X-plane that relies on AFC for control in pitch roll and yaw axis tested for speeds up to Mach 0.7. Flight test of that aircraft is slated for 2025.
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