Turbofan jet engine thrust 盒 AO TO The net thrust(F)generated by a turbofan is ● Fy me ve-mo vo BPR(me v) m=the mass rate of hot combustion exhaust flow from the core engine mo=the mass rate of total air flow entering the turbofan mc+m mc=the mass rate of intake air that flows to the core engine m,=the mass rate of intake air that bypasses the core engine v;=the velocity of the air flow bypassed around the core engine ve=the velocity of the hot exhaust gas from the core engine vo=the velocity of the total air intake the true airspeed of the aircraft MT333 Materials Applications Practice Prof.XiaoQi Chen A.19 Turboprop jet engine Prop Gearbo以 Compressor Turbine Exhaust O TONG UN Shant Combustion chamber In turboprop engines,a portion of the engine's thrust is produced by spinning a propeller,rather than relying solely on high-speed jet exhaust.As their jet thrust is augmented by a propeller,turboprops are occasionally referred to as a type of hybrid jet engine. MT333 Materials Applications&Practice Prof.XiaoQi Chen A20MT333 Materials Applications A.19 & Practice Prof. XiaoQi Chen Turbofan jet engine thrust The net thrust (FN) generated by a turbofan is ṁ e = the mass rate of hot combustion exhaust flow from the core engine ṁo = the mass rate of total air flow entering the turbofan = ṁc + ṁf ṁc = the mass rate of intake air that flows to the core engine ṁf = the mass rate of intake air that bypasses the core engine vf = the velocity of the air flow bypassed around the core engine ve = the velocity of the hot exhaust gas from the core engine vo = the velocity of the total air intake = the true airspeed of the aircraft ( )f c o o e FN me v m v BPR m v       MT333 Materials Applications A.20 & Practice Prof. XiaoQi Chen Turboprop jet engine In turboprop engines, a portion of the engine's thrust is produced by spinning a propeller, rather than relying solely on high-speed jet exhaust. As their jet thrust is augmented by a propeller, turboprops are occasionally referred to as a type of hybrid jet engine