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9×15 Low-Speed Wind Tunnel

The 9- by 15-Foot Low-Speed Wind Tunnel (9×15) is the most utilized low-speed propulsion acoustic facility in the world. It is the only national facility that can simulate takeoff, approach, and landing in a continuous subsonic environment.

Facility Overview

Honeywell Predictive Tool Development
Honeywell Predictive Tool Development (PTD) Test in the 9- by 15-Foot Low-Speed Wind Tunnel (9×15).

The 9×15 is a significant asset to the nation and the aero-propulsion community because of its unique ability to test large-scale hardware in a continuous subsonic air stream. With the ever-increasing demand for reducing aircraft noise, the importance of the 9×15 is greater than ever. Offering state-of-the-art acoustic capabilities, the facility is a vital part of the nation’s aeronautics research plans. Programs supported in this facility include a variety of commercial aircraft propulsion systems: the High Speed Civil Transport (HSCT), Advanced Tactical Fighter (ATF), Joint Strike Fighter (JSF) and other military short takeoff and vertical landing (STOVL) aircraft applications.

Built in 1968, the test section of the 9×15 is 9 ft high by 15 ft wide and 33 ft long. Providing airspeeds from 0 to 165 mph, this facility has unique and nationally recognized capabilities to evaluate aerodynamic performance and acoustic characteristics of nozzles, inlets and propellers.

Blade Assembly Test Hardware
General Electric Open Rotor Historic Baseline Blade Assembly Test Hardware in the 9- by 15-Foot Low-Speed Wind Tunnel (9×15).

The facility is acoustically treated and equipped with microphones linked to a dynamic data system. A series of drive rig systems are available to power engine fan models for performance and acoustic testing. A unique “rotor alone nacelle” test capability allows isolation of “fan alone noise” by elimination of outlet guide vanes.

Specialized support systems include:

Quick Facts

The 9×15, housed in the return leg of the 8- by 6-Foot Supersonic Wind Tunnel (8×6), provides a unique facility for testing large-scale hardware in a continuous subsonic air stream. The test section is 9 ft high by 15 ft wide by 33 ft. long and provides airspeeds from 0 to 165 mph. The facility is used to evaluate aerodynamic performance and acoustic characteristics of nozzles.

Name: 9- by 15-Foot Low-Speed Wind Tunnel (9×15)
Airspeed: 0 to 165 mph
Test section: 9 ft high by 15 ft wide by 33 ft long
Reynolds number: 0 to 1.4×106/ft
Dynamic pressure: 0 to 72 psf
Temperature: Ambient to 550°R

The 9×15

Capabilities

The 9×15 provides customers with a facility capable of testing large scale aero-propulsion hardware.

Characteristics and Performance

Tunnel Support Systems

Model Support Systems

Model Data and Control System Capabilities

Please contact the facility manager for information on facility measurement systems.

Contact

9×15 Low-Speed Wind Tunnel (9×15)
Facility Manager: David Stark
216-433-2922
David.E.Stark@nasa.gov

Testing Division
21000 Brookpark Rd., MS 6-8
Cleveland, Ohio 44135
216-433-8301
William.P.Camperchioli@nasa.gov

If you are unsure about whom to contact about a specific facility question, please call our main number at 216-433-4000.

Using Our Facilities

NASA’s Glenn Research Center provides ground test facilities to industry, government, and academia. If you are considering testing in one of our facilities or would like further information about a specific facility or capability, please let us know.

Did you test in one of our facilities? Let us know about your experience by participating in our customer facility evaluation survey.

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