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02-01-2023
Engineering

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Airship is to operate at 20 m/s in air at standard conditions. a 1/20 scale model is to be tested in a wind tunnel atthe same temperature to determine drag.find:(a) criterion needed to obtain dynamic similarity(b) air pressure required if air speed in wind tunnel is 75 m/s(c) prototype drag if the drag on the model is 250 n

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