An airplane wing, with chord length of 1.5 m and span of 9 m is designed to move through standard air at a speed of 7.5 m/s. A 1:10 scale model of this wing is to be tested in a water tunnel. Determine the speed necessary in the water tunnel to achieve dynamic similarity. Determine the ratio of forces measured in the model flow to those on the prototype wing.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

The higher the astm grain size number, the finer the gran is. a)-true b)-false