Recent Improvements to the NAE 5 Ft. x 5 Ft. Blowdown Wind Tunnel(Ameliorations Recentes a la Soufflerie a Rafales de 5 Pi. x 5 Pi. de L'Ean).
NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)
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Although the National Aeronautical Establishment NAE 5 ft x 5 ft Blowdown Wind Tunnel was conceived in the 1950s, with commissioning in 196263, it has stood the test of time very well and still, in 1985, in heavy demand. Three main reasons for this situation are 1 the basic wind tunnel design was fundamentally very sound 2 the wind tunnel circuit and its auxiliary systems have frequently been improved and modernized so that it, even today, is a modern up-to-date facility and 3 the high level of competence of the supporting staff. This report presents the major improvements made in recent years and the impact these have had on the performance of the facility. The improvements are The rebuild of the settling chamber The rebuild of the exhaust diffuser The installation of active Mach number control for subsonic transonic operation The incorporation of dual drive on the two-dimensional insert balance system The suppression of edgetone noise The incorporation of highly accurate digital pressure transducers The control and data processing system. Future plans for expanded use of the wind tunnel are outlined. Canada
- Test Facilities, Equipment and Methods