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Modern jet engines are based on the turbofan principle. Some of the air sucked in by an intake fan then enters a set of compressors, is mixed with fuel in combustion chambers, and expands through the turbines that drive the fan. However, most of the air is accelerated by the fan through a bypass and exits together with the hot combustion exhaust.
In one type of engine, the ratio of the mass flow rate through the bypass is 3.0 times that through the combustion path. An aircraft fitted with this engine is in steady flight at 1000 km/hr. Air enters the jet engine at a rate of 360 kg/s. Bypass air exits at 720 m/s while combustion air exits at 1200 m/s. What is the thrust in kN of this engine?
A. When the two torques are applied to the composite shaft, determine: the maximum shear stress magnitude in aluminium tube (1), the rotation angle of joint B and c.
neglecting with the presence of friction air dragm and other inefficiencies how much gasoline is consumed when a
xerted on the shaft shown in the figure, which rotates at 1150 rev/min and supports a 10-kip bending force. Use a 1095 HR steel. Specify a diameter d using a design factor of nd = 1.6 for a life of 3 min. The surfaces are machined.
Design the number of teeth and depth of teeth need be chosen. Considerations include the turn angle for each stroke, the bearing stress on the teeth and pins and shear stress on the teeth.
a strain gauge that has a nominal resistance of 350 ohms and a gauge factor of 1.8 is mounted in an equal-arm bridge
ammonia vapor flows through a valve. it enters the valve at a pressure of 8 bar and a temperature of 120c and after
in order to determine the power dissipated across a resistor the current flow and resistance values are measured
air flows through a convergent-divergent nozzle from a large reservoir in which the pressure and temperature are
a ball is shot vertically into the air 50 m/s 108m from the ground. 6 seconds later, another ball is shot vertically into the air 20 m/s 58m from the ground. Find the distance where they meet in the air from the ground.
vector r is the difference between vectors t and s. if s is inclined 28 degrees from the vertical and the angle between
a piston-cylinder device containing air undergoes a polytropic compression process from 2 liters 300 kpa and 20 degc to
a power plant using steam as the working fluid operates on a rankine cycle. the temperature at the condenser exit is
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