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Q1. An ideal jet engine with a compressor, combustion chamber, turbine and converging nozzle was held...

Q1. An ideal jet engine with a compressor, combustion chamber, turbine and converging nozzle was held stationary during an experiment to measure thrust in a laboratory. The turbine is used to drive the compressor. The atmospheric pressure and room temperature in the laboratory is measured as 102 kPa and 283 K. The gauge pressure at compressor exit is measured as 0.0781 bar and the inlet air flow is 10.4414 l/s. The maximum temperature reached in the jet engine is measured as 1183 K. The heating value of fuel is 42580 kJ/kg and the density of fuel is 0.8 kg/l. Assume inlet velocity of air at engine entrance as zero. Assume constant specific heat values and ideal operations for compressor, combustion chamber, turbine and nozzle. The ideal air to fuel ratio by mass is:

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