In a jet propulsion unit, air is taken in a rotary compressor at 1.01 bar and 15°C and compressed to 4.04 bar with an isentropic efficiency = 82%. The air coming out from the compressor is heated to 750°C and passed through a turbine which drives power just sufficient to run the compressor with isentropic efficiency = 78%. The gases coming out from the turbine is passed through a nozzle to a pressure of 1.01 bar with an isentropic efficiency = 88%. Neglecting the mass of fuel and assuming R and y are same for both air and gases, find out (i) Power required to drive the compressor, (ii) air- fuel ratio taking Calorific Value of fuel = 42 MJ/kg, (iii) The pressure of gases leaving the turbine and (iv) Thrust per kg of air per second.

In a jet propulsion unit, air is taken in a rotary compressor at 1.01 bar and 15°C and compressed to 4.04 bar with an isentropic efficiency = 82%. The air coming out from the compressor is heated to 750°C and passed through a turbine which drives power just sufficient to run the compressor with isentropic efficiency = 78%. The gases coming out from the turbine is passed through a nozzle to a pressure of 1.01 bar with an isentropic efficiency = 88%. Neglecting the mass of fuel and assuming R and y are same for both air and gases, find out (i) Power required to drive the compressor, (ii) air- fuel ratio taking Calorific Value of fuel = 42 MJ/kg, (iii) The pressure of gases leaving the turbine and (iv) Thrust per kg of air per second.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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