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As soldiers get bigger and packs get heavier, a parachutist and load can weigh as much as 400 lbf.
At a point upstream of the throat of a converging-diverging nozzle, the properties are V1 = 200 m/s, T1 = 300 K, and p1 = 125 kPa
An incompressible fluid flows past an impermeable flat plate, as in Fig. with a uniform inlet profile u = Uo and a cubic polynomial exit profile u ˜
An incompressible fluid flows steadily through the rectangular duct in the figure. The exit velocity profile is given by u ˜ umax(1 - y2/b2)(1 - z2/h2).
An incompressible fluid is squeezed between two disks by downward motion Vo of the upper disk. Assuming 1-dimensional radial outflow, find the velocity V(r).
An observer at sea level does not hear an aircraft flying at 12000 ft standard altitude until it is 5 statute miles past her. Estimate the aircraft speed in ft/
An oil film drains steadily down the side of a vertical wall, as shown. After an initial development at the top of the wall, the film becomes independent
An open water jet exits from a nozzle into sea-level air, as shown, and strikes a stagnation tube. If the centerline pressure at section (1) is 110 kPa
An oil cooler consists of multiple parallel-plate passages, as shown in Fig. P6.88. The available pressure drop is 6 kPa, and the fluid is SAE 10W oil at 20°C
An idealized incompressible flow has the proposed three-dimensional velocity distribution
An incompressible flow field has the cylinder components ?? = Cr, ? z = K (R2 - r2), ?r = 0, where C and K are constants and r = R, z = L.
Apply the analysis of Prob. 6.54 to the following data. Let W = 5 m, Y = 8 m, ho =2 m, L = 15 m, D = 5 cm, and e = 0. (a) By letting h = 1.5 m and 0.5 m
An aluminum cylinder (SG = 2.7) slides concentrically down a taut 1-mmdiameter wire as shown in the figure. Its length is L = 8 cm and its radius R = 1 cm.
An auto has m = 1000 kg and a drag-area CDA = 0.7 m2, plus constant 70-N rolling resistance. The car coasts without brakes at 90 km/h climbing a hill
An average table tennis ball has a diameter of 3.81 cm and a mass of 2.6 gm. Estimate the (small) depth h at which the ball will float in water at 20°C
An air-hockey puck has m = 50 g and D = 9 cm. When placed on a 20°C air table, the blower forms a 0.12-mm-thick air film under the puck.
An asphalt circular channel, of diameter 75 cm, is flowing half-full at an average velocity of 3.4 m/s. Estimate
An annulus of narrow clearance causes a very large pressure drop and is useful as an accurate measurement of viscosity
An American 6-ft diameter multiblade HAWT is used to pump water to a height of 10 ft through 3-in-diameter cast-iron pipe.
An airplane, of overall length 55 ft, is designed to fly at 680 m/s at 8000-m standard altitude. A one-thirtieth-scale model is to be tested in a pressurized
An airplane weighs 180 kN and has a wing area of 160 m2 and a mean chord of 4 m. The airfoil properties are given
An airplane weighing 28 kN, with a drag-area CDA = 5 m2, lands at sea level at 55 m/s and deploys a drag parachute 3 m in diameter. No other brakes are applied.
An airplane has a mass of 5000 kg, a maximum thrust of 7000 N, and a rectangular wing with aspect ratio 6.0. It takes off at sea level with a 60° split flap
An engineer makes careful measurements with a weir (see Sect. 10.7 later) which monitors a rectangular unfinished concrete channel laid on a slope of 1
An East Coast estuary has a tidal period of 12.42 h (the semidiurnal lunar tide) and tidal currents of approximately 80 cm/s.