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, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Engineering, 04.07.2019 16:10, TheOriginalMeyah
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10, QueenLife4869
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
The nozzle in the power plant of a supersonic aircraft is designed to function under isentropic cond...
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