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Two aluminum plates, which are part of an aircraft structure, are held together by a grade 7½, UNF bolt. The effective area of the aluminum plates in compression is estimated to be 12 times the cross-sectional area of the steel bolt. The bolt is initially tightened to 90% of its proof strength. Gust loads, varying from zero to P, tend to pull the plates apart (this results in negligible bolt bending). With a safety factor of 1.3, what is the maximum value of P that will not cause eventual bolt fatigue failure? What clamping force will remain when this value of P acts?
a turbulent boundary layer exists in the flow of water at 20degc over a flat plate. the local shear stress measured at
a an ideal gas flows through a throttling device. does the temperature change increasedecrease or remain the same from
for your sink at home the flow rate in is 5000 unitshr. accumulation is 2500 units. what is the accumulation rate if
hot combustion gases enter a gas turbine at .8mpa and 1500 k at a rate of 2.1 kgs and exit at .1 mpa and 800 k. if heat
a cylindrical duct supplies 1.20 kgs of combustion air at 150 c and 95.0 kpa to a furnace. if the velocity of the air
A beam of span 600mm has a load of 1 kg and deflects by 0.55mm its width is 25.4mm and depth is 6.7mm what is the elastic modulus of the material?
Determine the maximum value of n if the major loss is to be no more than 10% of the minor loss and the friction factor is 0.02.
one kilogram of air as an ideal gas executes a carnot power cycle having a thermal efficiency 50. the heat transfer to
Explain why it is not necessary for a program to be completely free of defects before it is delivered to its customers.
A steam turbine is operating at a steady state with a mass flow rate of 3682 kg/h at the inlet. The power output of the turbine is 8700 kW. Steam enters the turbine at a pressure of 40 bar, temperature of 320 oC, and with a velocity of 13 m/s. The ex..
If 4 W are being dissipated in circuits mounted to the back surface of the chip, what is the steady-state temperature difference between back and front surfaces?
A strut CB is guyed back to a wall support through cable BA. Two forces are applied to the concurrent joint at B. Determine the tension in cable BA and the force in member CB for a condition of equilibrium to occur.
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