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Artist illustration of an aerial view of the Transonic Truss-Braced Wing aircraft in flight above a forest of green trees.
A model representing half an airplane featuring a truss-braced wing, installed for testing in a wind tunnel

Sustainable Flight Demonstrator Project

The purpose of the Sustainable Flight Demonstrator (SFD) project is to engage with industry, academia, and other government organizations to identify, select, and mature key airframe technologies – such as new wing designs – that have a high probability of transition to the next generation single-aisle seat class airliner. The centerpiece of the project is the X-66, an experimental demonstrator aircraft that will be produced under a partnership between NASA and the Boeing Company.

Learn More About the SFD Project about Sustainable Flight Demonstrator Project

project manager

Brent Cobleigh

Deputy Project Manager

Sarah Waechter

Chief Engineer

Clint St. John

Lead Systems Engineer

Rich DeLoof

Sustainable Flight National Partnership

NASA Aeronautics is engaging with industry, academia, and other agencies through our Sustainable Flight National Partnership (SFNP) to accomplish the aviation community’s goal of net-zero carbon emissions by 2050.

Learn More About the SFNP about Sustainable Flight National Partnership
Illustration of three futuristic concept aircraft in flight.