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An airplane has a mass of 20,000 kg and flies at 175 m/s at 5000m standard altitude. Its rectangular wing has a 3m chord and a symmetric airfoil at 2.5° angle of attack. Estimate (a) the wing span, (b) the aspect ratio, and (c) the induced drag. Take density of air to be 0.7 Kg/m3. Assume that the factors for induced drag and the lift slope, d and t, respectively, are equal to 0.01; i.e., d = t = 0.01.
Calculate the change in internal energy of the gas. Remember it is an ideal gas in a constant temperature bath.
3 kg of refrigerant 22 undergoes a process for which the pressure-specific volume relation is pv^-0.8 = constant. The initial state of the refrigerant is 12 bar and 60 degrees C. The final pressure is 8 bar. Kinetic and potential energy effects are n..
A copper vessel of mass 2kg contains 6kg of water. If the initial temperature of the vessel plus water is 20C and the final temperature is 90C, how much heat is added to accomplish this change assuming that there is no heat loss?
calculate the max deflection in a titanium alloy cantilever beam that can support a 100n load at the end of the beam
an air-standard brayton cycle has compressor inlet conditions of 310 k and 98 kpa and turbine inlet conditions of 882
Consider a cargo vehicle that will travel back and forth between the moon and LEO that is propelled by an electric propulsion system on a slow spiral trajectory. Assume that the characteristic velocity change (?v) for this mission is ?v=6,800 m/s.
calculate the linear density of atoms along the 111 direction and the planar density of atoms in the 111 plane in bcc
A 0.9-m3 rigid tank is divided into two equal compartments by a partition. One compartment contains Ne at 0C and 100 kPa, and the other compartment contains Ar at 50 C and 200 kPa. Now the partition is removed, and the two gases are allowed to mix. H..
A manometer containing oil (r = 850 kg/m3) is attached to a tank filled with air. If the oil-level difference between the two columns is 60 cm and the atmospheric pressure is 98 kPa, determine the absolute pressure of the air in the tank.
consider a heat engine executed using a flow rate of 0.03 kgs of refrigerant-134. the engine operates between two
steam flow rate kgs for a reheat-regenerative steam power plant which is to produce 200 mw of electricity. the turbine
a valve in a cylinder has a cross sectional area of 11 cm2 with a pressure of 735 kpa inside the cylinder and 99 kpa
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