The Modane–Avrieux Large Wind Tunnel Department of O.N.E.R.A. designs equips and calibrates single or multi–component dynamometers and balances for tests in its own facilities. It also undertakes such work as requested by external organisations. The capacities of these instruments range from 0.01 N (0.002 Ibf) to 1 000 kN (100 tonf) and the general accuracy is of the order of 10–3.The principles and processes governing the design, fabrication and calibration of these transducers are desc
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