NASA - National Aeronautics and Space Administration
  Follow this link to skip to the main content + Contact NASA
Go

+ GRC Home
+ GRC Facilities Home
9'x15' Low Speed Wind Tunnel
8x6 Home
Quick Facts
Capabilities
Testing Information
Contact Information
Gallery
Facility Fact

The 9x15 has supported Ultra-Efficient Engine Technology (UEET), Quiet Aircraft Technology (QAT), Versatile Affordable Advanced Turbine Engine, Joint Strike Fighter and the Advanced Tactical Fighter.


C-1996-480: STOVL model in the 9x15 C-1990-4389: STOVL 279-3C model in the 9x15
Facility Capabilities
The 9'x15' Low Speed Wind Tunnel provides customers with a facility capable of testing large scale aeropropulsion hardware.

Characteristics and Performance
  • Test Section Size: 9 ft high by 15 ft wide by 28 ft long
  • Mach Number Range: 0 to 0.2 (0 to 175 mph)
  • Relative Altitude: ambient
  • Reynolds Number: 0 to 1.4x106/ft
  • Dynamic Pressure: 0 -to 72 psf
  • Stagnation Pressure: atmospheric
  • Temperature: ambient - 550 °R
  • Acoustic frequency cutoff: <250 Hz
  • The tunnel can conduct propulsion tests with hydrogen fuel

Tunnel Support Systems

  • Air: 40, 150, and 450 psig
  • Service Air: 125 psig
  • Combustion Air Heater: 15 pps at up to 1,000 °F and 25 pps at up to 530 °F
  • Exhaust: 16-in. line at 20 and 26 in. of Hg
  • High-Pressure Air (2600 psig) Storage: 981,000 scf
  • GH2 Fuel System: 1.0 pps at 2,200 psig from 70,000 scf trailers
  • Model Cooling: Available
  • Model Hydraulics: 15 gpm at 3,000 psig
  • Fan Drive Rigs: 1,000, 2,000, and 5,000 SHP

Model Support Systems

  • Dynamic Actuation System: A high speed model support and actuation system to provide realistic simulations of STOVL aircraft takeoff and rolling landings
  • Rotor Alone Nacelle System: Side wall mounted test capability to enable isolation of fan alone noise by elimination of outlet guide vanes
  • Model Integrated Support System (MISS) - A ceiling strut with high-pressure air and exhaust lines and 4 degrees of freedom: pitch, yaw, roll, and height
  • Turntables: Floor mount model support systems with high-pressure and exhaust capability
  • Jet Exit Rig: Ceiling mounted strut with hot gas capabilities for nozzle research

Model Data and Control System Capabilities

Pressure Systems
• 1024 channel pressure measurement system
• Real-time data transfer and display to ESCORT
• Online calibration
• Pressure ranges from ± 2.5 psi to 500 psi
• Accuracy ± 0.05% of range
Data System - ESCORT
• 256 analog steady state channels
• Accuracy ± 0.05 percent of range
• Once per second update rate of all channels
• Acquires 1024 parameters from system per second
• Real-time display of calculations and parameters
• High resolution graphics and display pages
• X-window based system
• Self contained in facility control room
• Off-site access to data
Dynamic Data System
• 256 channel VME based transient acquisition system
• Sample and hold per channel
• Anti-aliasing filter amplifier (132 dB/Oct) per channel
• Online graphics and calculation
• Networked PC workstation for runtime analysis
• Off-site access to data
Flow Visualization
• Pressure sensitive paint
• Sheet laser
• Oil flow visualization
• High speed video - up to 1000 full screen frames/s
Test Article Controls
• Digital model control system with graphical interface
Remote Access Control Room
• Automated test article sequencing system
• Real-time remote access to all data
• Video conferencing in real time
• Workstations supplied for remote site
• Secure network connections provided

Further Information
9'x15' Low Speed Wind Tunnel (9x15)
Evaluating aerodynamic performance and acoustic
characteristics.
+ View the fact sheet (PDF)

Get Adobe Acrobat Reader
 








USA.gov - Your First Click to the US Government

+ Freedom of Information Act
+ NASA Web Privacy Policy and Important Notices

NASA - National Aeronautics and Space Administration
Editor: Sharon Maier, SGT Inc.
NASA Official: Susan Kevdzija
+ Web Curator
+ Contact NASA Glenn
+ Contact NASA
Last Updated: January 24, 2007