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NASA Boeing X-66A Transonic Truss-Braced Wing Sustainable Flight Demonstrator Family

NASA’s X-66A is a Boeing-built experimental aircraft intended to demonstrate a transonic truss-braced wing for quieter, lower-emission commercial aviation. The full-scale demonstrator uses very long thin wings stabilized by diagonal struts; NASA and Boeing paused the flight-demonstrator work while continuing thin-wing research, so the aircraft remains a development-stage research asset rather than an operational airliner.

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Identity

Aliases
X-66X-66ATransonic Truss-Braced WingTTBWSustainable Flight Demonstrator
Family Name
NASA X-66A
Full Name
NASA Boeing X-66A Transonic Truss-Braced Wing Sustainable Flight Demonstrator Family
Roles
researchexperimentaltechnology_demonstrator
Status
development
Type
aircraft

Details

Aircraft Specs
Configuration
fixed_wing
Operating Modes
land
Takeoff Landing Capabilities
conventional
Description
NASA’s X-66A is a Boeing-built experimental aircraft intended to demonstrate a transonic truss-braced wing for quieter, lower-emission commercial aviation. The full-scale demonstrator uses very long thin wings stabilized by diagonal struts; NASA and Boeing paused the flight-demonstrator work while continuing thin-wing research, so the aircraft remains a development-stage research asset rather than an operational airliner.
Manufacturer

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Creation Time
August 13, 2026 at 23:26:38 UTC
Updated Time
August 13, 2026 at 23:26:38 UTC