Engineering, 11.03.2020 05:28 haileycrane
The nozzle in the power plant of a supersonic aircraft is designed to function under isentropic conditions at a cruising altitude of 65000 ft (20 km) where the ambient pressure is 5.5 kPa. The jet of combusted gas exits the nozzle at Mach 3 relative to the aircraft at isentropic supersonic conditions (no expansion waves) at the cruising altitude. The aircraft changes altitude to 35000 ft (10 km) where the ambient pressure is 26.5 kPa. Under what conditions will the nozzle operate at this altitude i. e. will there be a normal shock, oblique shock, isentropic flow or expansion waves? Explain. Assume that the chamber (reservoir) conditions remain the same and that the properties of exhaust gas and air are same.
Answers: 3
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
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Engineering, 04.07.2019 18:10
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
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Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
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The nozzle in the power plant of a supersonic aircraft is designed to function under isentropic cond...
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