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A hypersonic gun tunnel is used to generate short-duration, high-speed flows and typically consists of two cylindrical volumes separated by a diaphragm. One end of the tunnel (the driver end) is pumped to a high pressure, while the other end (the driven end) is evacuated to a low pressure. At a set pressure difference the diaphragm ruptures producing a high speed flow of gas that can be used to test a model at supersonic speeds. For a driver end of volume 0.781m3 containing nitrogen at 300 bar, 27°C, and an evacuated driven end of volume 11.9m3, determine the following. Assume that the tunnel operates adiabatically. a) The total mass of the gas, in kg, present in the system. b) The final temperature, in K, and the final pressure, in bar, of the gas after the diaphragm breaks and the system reaches equilibrium.
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Liquid octane (C8H18) at 77F, 1 atm enters a combustion chamber operating at steady state and burns completely with 50% excess dry air entering at 120F, 1 atm. The products exit at 1060F, 1 atm. Determine the rate of heat transfer between combustion ..
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Consider a rocket engine with an exit area of 8.5 m2. The flow rate of fuel and oxidizer are 75 kg/sec and 8 kg/sec respectively. Determine the thrust of the rocket if it is operating at an altitude of 200 km above sea level. The exhaust velocity and..
a 1200 lb wrecking ball with a velocity of 4 fts at the bottom of its arc strikes a wall and comes to rest in a
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