Transonic Wind Tunnel Testing

Since 1956 ARA has provided wind tunnel data of the highest quality by developing and utilising highly efficient, world-class techniques for our global civil and military aerospace customer base.

The ARA Transonic Wind Tunnel (TWT) is a closed circuit, continuous flow tunnel with the following operational features;

Test section 2.74m wide x 2.44m high x 3.66m long (9ft x 8ft x 12ft).
Four porous walls 22% maximum porosity.
Mach number 0 to 1.4
Stagnation pressure 0.8 to 1.2 atmospheres (standard operation is 1 atmosphere)
Reynolds number 3.5 to 16.7 million/m (dependent upon Mach number)

The TWT has several support systems for a wide range of test types;

  • Rear single sting support, basic incidence range -10° to +40°, ±180° roll range
  • High incidence offset roll system, up to 70° incidence
  • Twin Sting Rig for rear fuselage testing
  • Underfloor balance support for semi-span model testing
  • 2-dimensional wing testing support (±180° incidence range)
  • High-pressure air-feed system for full-span and semi-span testing
  • Captive Trajectory System for full 6-degree of freedom store release trajectory testing

ARA provides full model force and moment and pressure measurements using strain-gauge balances, electronic pressure scanners, advanced optical measurement systems, and data reduction methods tailored to suit individual customers’ needs.

Contact us

Aircraft Research Association Limited

Manton Lane, Bedford, England MK41 7PF

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