The 1'x1' Supersonic Wind Tunnel provides customers with a facility capable of conducting fundamental research in supersonic and hypersonic fluid mechanics.

Characteristics and Performance

• Mach Number Range: 1.3 to 6.0 (discrete number)
• Reynolds Number: 0.4 - 16.5 x 10⁶/ft
• Total Temperature: 520 - 1100°R
• Dynamic Pressure: 80 to 1750 lbf/ft²
• Maximum Pressure: 165 psia

Flow Visualization

• Schlieren
• Sheet-laser system
• Blue Zyglo
• Black light

Support Systems

• Model hydraulics
• Auxiliary bleed
• Probe actuation systems

Model Data and Control System Capabilities

• Pressure Systems
  ESP is an off the shelf electronically scanned pressure system. The system consists of numerous 32 port, rack mounted modules from +/-2.5 PSID to +500 PSID, located outside the test chamber. Each module has a check pressure to assure the module is performing correctly and can be calibrated in place using up to 5 highly accurate calibration pressures to maintain the overall system accuracy of +/-0.05% of range. This calibration is performed every 2 hours.
  For the 1x1, the following ranges are typically provided:
  • 224 ports +/- 5 PSID 5 PSIA Ref
  • 256 ports +/- 15 PSID Barometric Ref
  • 64 +/- 30 PSID Barometric Ref
  • 96 +/- 100 PSID Barometric Ref
  • 32 +/250 PSID Barometric Ref
    
    
• Data System - Escort
  Escort, the steady state data acquisition system, uses a DEC Alpha microprocessor to provide:
  • An X window based system
  • Real time on-line acquisition of analog signals
  • Conversion of raw 10Hz filtered digitized Neff data to engineering units
  • Computed performance calculations, which can be displayed in a variety of tabular and graphical formats.
  • Limit checking on all selected changes
  • 1 second update rate
  
  Escort can stand alone to meet all secure test requirements or it can be connected to a central processing cluster, which facilitates software application development, downloading of software, uploading and storage of facility tables, post processing of data and transmitting of data to a data collector for archival storage.
  For the 1x1, Escort provides the following:
  • Accuracy for the Neff 400 is +/- 0.05% of range
  • 240 channels of which 220 are available for the test article
  • 48 temperatures from type E
    

• Dynamic Data System
  The transient data system provides multi-channel high speed digitized acquisition of rapidly changing cyclic on non-periodic impulse type events. The system consists of:
  • A near real type display capability
  • Off loading the data by FTPing, in near real time, to either our computer or yours for post processing
  • 48 16 Bit A/D per channel
  • Throughput of 9.6 million samples per second