The Aircraft Research Association (ARA) is an aerodynamics research institute in the north-west of Bedford. The association was founded on 22 January 1952. 14 main British aviation companies funded £1.25m to build a large wind tunnel. It was first proposed in 1953 to build the site at Stevington, north-east of Bedford. By March 1953, the current site was chosen. The site has the largest transonic wind tunnel in the UK, known as the TWT, with speeds up to Mach 1.4, powered by a Sulzer axial compressor. It is 25,000 hp electric-powered. More information...
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