![](https://www.nasa.gov/wp-content/uploads/2023/03/11x11-scale-model-cev.jpg?w=1024)
![](https://www.nasa.gov/wp-content/uploads/2023/03/acd19-0157-008-1.jpg?w=985)
![A model of SpaceX’s Crew Dragon capsule is mounted in a wind tunnel](https://www.nasa.gov/wp-content/uploads/2020/05/acd15-0158-027.jpg?w=1024)
11-Foot Transonic Unitary Plan Facility (11×11)
As part of the Unitary Plan Wind Tunnel complex, the 11′ x 11′ Transonic Wind Tunnel has been instrumental in the development of virtually every domestically produced commercial transport and military fixed-wing airframe since the 1960s.
Focus Areas and Capabilities
Learn more about the specifications and capabilities of this facility.
![Scale Model of the Crew Launch Vehicle being tested in the 11-by 11-foot Transonic Wind Tunnel](https://www.nasa.gov/wp-content/uploads/2015/12/11x11-scale-model-clv.jpg?w=680)
Characteristics
The 11-Foot TWT is a closed-return, variable-density tunnel with a fixed-geometry, ventilated test section with a flexible wall nozzle.
![model of SNC Dream Chaser Lifting Body aircraft in wind tunnel](https://www.nasa.gov/wp-content/uploads/2023/03/acd20-0050-005.jpg?w=1024)
Quick Facts
It is one of three separate test sections powered by a common drive system.
![](https://www.nasa.gov/wp-content/uploads/2023/03/acd19-0157-005.jpg?w=1024)
Data Acquisition
The 11-Foot TWT has been instrumental in the development of virtually every domestically produced commercial transport and military fixed-wing airframe since the 1960s.
11-Foot Transonic Unitary Plan Facility Image Gallery
Contact Information
11-Foot Transonic Unitary Plan Facility
Contact: Maureen Delgado
(650) 604-1463
NASA Ames Research Center
Moffett Field, CA 94035
(650) 604-1620
Fact Sheet
This wind tunnel has set a new standard in test productivity and technical
excellence.
The 11- by 11-Foot Transonic Wind Tunnel (11-Foot TWT) Facility is part of the Unitary Plan Wind Tunnel (UPWT) complex at NASA Ames Research Center at Moffett Field, California, where generations of commercial and military aircraft and NASA space vehicles, including the space shuttle, have been designed and tested.
Read the 11-by 11-Foot Transonic Fact Sheet![Model of generic airplane in wind tunnel](https://www.nasa.gov/wp-content/uploads/2023/03/acd18-0104-004.jpg?w=1024)
AETC Transonic Facilities
NASA operates three Transonic Facilities. The National Transonic Facility, 11-Foot Transonic Unitary Plan Facility and the Transonic Dynamics Tunnel
Learn More About AETC Transonic Facilities![Facility Aerodynamics Validation and Operational Research model in wind tunnel](https://www.nasa.gov/wp-content/uploads/2023/03/process-improvement-gallery4.jpg?w=1024)
AETC Ground Facilities
AETC sets the strategic direction for NASA’s versatile and comprehensive portfolio of ground test aeronautics research capabilities.
Among these assets are subsonic, transonic, supersonic, and hypersonic wind tunnels and propulsion test facilities at Ames Research Center, Glenn Research Center, and Langley Research Center.
Learn More About AETC Ground Facilities![NASA Ames Research Center aerial from the NFAC 80-by-120-foot wind tunnel inlet vanes N221B with Power Substation North N225B, Office Trailers TR35A, TR35, and TR35C in forground looking west across center. The image was taken by Jonas Jonsson and Zachary Roberts, General Engineers with the Ames Aeronautics Projects Office, during a drone flight over the center.](https://www.nasa.gov/wp-content/uploads/2023/05/acd20-0075-003.jpg?w=1024)