InappropriateTA t1_irov5uu wrote on October 9, 2022 at 10:13 PM

Isn’t the thrust generated by the turbine in the exhaust path, though?

Or are you contrasting this with thrust from exhaust impulse(?) like a rocket engine.

kassienaravi t1_irovupd wrote on October 9, 2022 at 10:19 PM

Thrust is not generated by the turbine. Turbine spins the compressor and fan. Thrust is generated by the fan and by the combustion of fuel in the combustion chamber.

InevitableRip8968 t1_irp5jyq wrote on October 9, 2022 at 11:35 PM

20-30% of the thrust comes from the core, or turbine. The other 70-80% comes from the fan.

857477459 t1_irp92jw wrote on October 10, 2022 at 12:03 AM

His point is all the energy is coming from the core. Its just being captured by the turbine and used to spin the fan.

InappropriateTA t1_irozjfu wrote on October 9, 2022 at 10:47 PM

Fan via link to the turbine, I mean.

InevitableRip8968 t1_irp5fv0 wrote on October 9, 2022 at 11:34 PM

Thrust is generated by the core and the high bypass. It’s around 70% thrust from the high bypass and 30% from the core. On newer engines it’s getting closer to 80% from the high bypass and 20% from the core.

Thecna2 t1_irph6z8 wrote on October 10, 2022 at 1:09 AM

In this case the term 'jet exhaust' mean the exhaust after it leaves the engines.

phasedsingularity t1_irqmyb7 wrote on October 10, 2022 at 8:38 AM

Thrust is generated by the internal forces in the engine - namely the exhaust and bypass gases pushing against the nozzle.