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Small Scale Transonic Tunnel

The small scale transonic tunnel is a 1:12 scale version of the Transonic Wind Tunnel (TWT). This facility is used for low cost wind tunnel testing on small models in the early development stages of a new program. It is also used for the calibration of flow angularity meters and other flow survey probes to be used in the TWT.

Facility Capabilities

  • Mach number range from 0.3 to 1.2
  • Incidence range up to 20˚
  • Small strain gauge sting balances
  • Wall mounted half model balance
  • Pressure measurements using ESP modules
  • Provision for Schlieren windows in the test section side walls

Technical Information

  • The test section is 22.86 cm (9 in) wide by 20.32 cm (8 in) high with perforated walls of 20% open area.
  • The tunnel is powered by an ejector driven from the 10bar (145psi) high pressure air reservoir.
  • Supersonic speeds are attained using the flexible nozzle