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An air cushion vehicle is supported by forcing air into the chamber created by a skirt around the periphery of the vehicle as shown in Fig. P3.106. The air escapes through the 1.7-in. clearance between the lower end of the skirt and the ground (or water). Assume the vehicle weighs 10,000 lb and is essentially rectangular in shape, 30 by 65 ft. The volume of the chamber is large enough so that the kinetic energy of the air within the chamber is negligible. (a) Determine the flow rate, Q, needed to support the vehicle. (b) If the vehicle weights were reduced to 5000 lb and the ground clearance maintained at 1.7 in., what flow rate would be needed?
a piston-cylinder device contains 12 kg of saturated vapor r-134a at 2.4 bar state 1. a 110v electric source supplies
Water flows at a rate of 20 l/s through a horz pipe dia .03 m. The pressure drop across the valve in the pipe is measured to be 2 kPa. Determine the irreversible head loss of the valve, and the useful pumping power needed to overcome the resulting..
A rigid container with volume V is originally filled with water of Temperature T1. A hose is then connected to an inlet port and hotter water of temperature T2 is pumped into the container at mass flow rate m in., while another venting port allows th..
a curved nozzle assembly that discharges to the atmosphere is shown. The nozzle mass is 4.5 kg and its internal volume is 0.002 m^3. The fluid is water. determine the reaction force exerted by the nozzle on the coupling to the inlet pipe.
water at 400kpa with a quality of 25 has its temperature raised 20c in a constant-pressure process. what is the new
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a wellinsulated counterflow heat exehanger operates at steady state. in one stream liquid water enters at 10 degree
at a time when rotation is prevented at the lower end of each shaft a 80 n-m torque is applied at the end a of shaft
calculate the incidence it of the tailplane for trim if the elevator deflection e is zero. ii calculate the neutral
why is communication with the customer so important? explain the twin dangers of making many changes or not enough
Calculate the torque required at input T and calculate the magnitude and direction of the torque required to hold the gearbox stationary (holding torque Th). Show the direction of the holding torque applied to the shaft with the aid of a sketch.
the velocity of a body is given by vt 5e-t 6 where v is in ms and t is in seconds. use the secant method to find when
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