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FutureFlight Weekly News Roundup
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Boeing's X-66A technology demonstrator
Pratt & Whitney's Geared Turbofan engines will power Boeing's X-66A technology demonstrator, with RTX sister company Collins providing nacelles. (Image: Boeing)

RTX Companies Join Boeing/NASA X-66A Sustainable Flight Demonstrator Project

Boeing has enlisted Pratt & Whitney and Collins Aerospace as key partners in the development of the X-66A aircraft for NASA’s Sustainable Flight Demonstrator project. The two RTX group companies will, respectively, supply Geared Turbofan engines and nacelles and engine accessories, under an agreement announced on Tuesday.

The X-66A airframe features a transonic truss-braced wing with extra-long, thin wings attached to the fuselage with diagonal struts. The Sustainable Flight Demonstrator project has attracted $425 million in funding from the U.S. Aviation Climate Action Plan, as well as some $725 million from Boeing and its partners.