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NASA, Boeing Release New Image of Experimental X-66 

The sustainable flight demonstrator in production could slash aircraft fuel consumption and reduce emissions by nearly a third, according to NASA.

Artist’s concept of the X-66 aircraft that Boeing will produce through NASA’s Sustainable Flight Demonstrator project. [Courtesy: NASA]
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Key Takeaways:

  • Boeing's X-66 is an experimental aircraft, developed with NASA, featuring a Transonic Truss-Braced Wing (TTBW) design for sustainable aviation.
  • Based on a modified MD-90, this innovative design aims to reduce fuel consumption and emissions by up to 30 percent.
  • The project is specifically focused on helping the United States achieve net-zero aviation emissions by 2050 and informing future sustainable single-aisle aircraft.
  • Production work for the X-66 has begun, with flight testing of the demonstrator aircraft anticipated to start in 2028.
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Boeing has shared its latest vision of sustainable aviation with a new rendering of the X-66, an experimental aircraft it is building through NASA’s sustainable flight demonstrator project.

The aircraft, which is based on a modified McDonnell Douglas MD-90 platform, features diagonal struts, known as Transonic Truss-Braced Wing (TTBW) concept. It’s a distinctive design that, when paired with advancements in propulsion and systems architecture, could slash fuel consumption and emissions by up to 30 percent, according to the space agency.

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