![Angle Measurement System In-field calibration verification (CUBE)](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery2.jpg?w=1024)
![Angle Calibration hardware for the AMS.](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery3.jpg?w=768)
![Angle of Attack instrumentation.](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery1.jpg?w=1024)
Test Technology: Angle Measurement
The angle of a model with respect to the freestream (angle of attack) must be known accurately in order to understand the forces on the model.
Focus Areas and Capabilities
Learn more about the specifications and capabilities of this facility.
![Angle Measurement System (AMS) mounted onto angle calibration machinery.](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery5.jpg?w=1024)
Quick Facts
The measurements that are taken of an aircraft's angle with respect to the flow field (angle of attack) typically rely on the angle of attack (AoA) measurement package or angle measurement system (AMS) that has been established. Ground testing angle of attack measurements may also depend on the system that is used for mounting the model that is being tested.
![Angle Calibration hardware for the AMS.](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery4.jpg?w=1024)
Techniques
NASA’s angle measurement techniques address different types of instrumentation for establishing an adequate model angle with respect to the airflow. These techniques, as well as the information that is acquired, can also be applied in new ways to different situations to provide additional capabilities for research and design.
![Angle Measurement System In-field calibration verification (CUBE)](https://www.nasa.gov/wp-content/uploads/2023/03/angle-gallery2.jpg?w=1024)
Capabilities
NASA's angle measurement technologies have the capability to present different forms of information that come from known measurement techniques. New information and new usages that come from existing techniques may result in system improvements for both research and design.
Test Technology: Angle Measurement Gallery
AETC Test Technologies
Test Technology supports ATP by keeping NASA’s research test facilities and flight assets moving into the future.
As the world’s technologies continue to improve and research requirements become more demanding, Test Technology provides new and improved capabilities for measuring pressure, temperature, angle, strain, and air flow.
Learn More About Test Technologies![Open-rotor Propulsion Rig, painted with Pressure-Sensitive Paint (PSP) and ready for testing.](https://www.nasa.gov/wp-content/uploads/2023/03/pressure_gallery_1.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)
AETC
Aerosciences Evaluation and Test Capabilities (AETC) Portfolio Office
The AETC Portfolio Office executes strategic efforts to preserve and enhance research and test capabilities for NASA’s world-class portfolio of National Wind Tunnel facilities.
Learn More About AETC![On August 9, 2022 Glenn Research Center’s newest lobby renovation, the 10x10 Supersonic Wind Tunnel Facility, was celebrated with a ribbon cutting by Acting Center Director, Dr. James “Jimmy” Kenyon and AETC Portfolio Office Director, Dr. Ron Colantonio.](https://www.nasa.gov/wp-content/uploads/2023/03/grc-2022-c-05727.jpg?w=1024)