Boeing 747 aircraft is powered by four CF-6 turbofan engines manufactured by General Electric Company. Each engine has the following data: Thrust force 24.0 KN Air mass flow rate 125 kg/s Bypass ratio 5.0 Fuel mass flow rate 0.75 kg/s Operating Mach number 0.8 Altitude 10 km Ambient temperature 223.2 K Ambient pressure 26.4 kPa Fuel heating value 42.800 kJ/kg If the thrust generated from the fan is 75% of the total thrust and assume that the exit pressures of the cold and hot streams are equal to the ambient pressure, determine: (a) The jet velocities of the cold air and hot gases (b) The specific thrust (c) The thrust specific fuel consumption (TSFC) (d) The propulsive efficiency (e) The thermal efficiency (f) The overall efficiency

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IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.