May 19, 2014 · Turbofan is the most efficient engine and most of the thrust is produced from the bypass air. The efficiency of the engine mainly depends on the engine bypass ratio. Turbojet is mainly used …

Nov 4, 2019 · The thrust from the hot combustion products coming out the back is minor. In a low-bypass turbofan, a good fraction of the thrust still comes from the jet part so it's part way between a …

Oct 19, 2019 · Similarly, why is power available (nearly) constant with speed for a propeller engine, while it varies for a jet engine?

Nov 4, 2018 · In jet engines, I read that thrust is related to the fuel flow rate, whereas in turboprop engines power produced is related to the fuel flow rate. What is the reason and brief math behind this?

What is the operating temperature of a turbofan engine? If advancements were made to materials through material science for the internal components would increasing the operating temperature …

Dec 16, 2022 · A modern turbofan engine however must operate over a wide range of flow velocities and densities, and so without the use of a variable geometry nozzle, keeping stall margins sufficiently …

Mar 6, 2023 · The Fan Pressure Ratio (FPR) is part of the Overall Pressure Ratio (OPR, ratio of highest to lowest pressure in your primary gas path from inlet to combustor). The importance of the FPR …

May 1, 2016 · Which is why they use a ducted fan in hovercrafts, for instance. But if that's true, shouldn't the fan in a turbofan be open (unshrouded), considering the high speeds (higher than a propeller)? …

I wonder which of these has higher or lower rotational speed: turboshaft turbofan turbojet turboprop Does anybody know the typical speeds for these kind of engines?

Dec 15, 2019 · The bypass air is accelerated by the fan at the front of the turbofan engine. This changes its velocity and therefore its momentum, which is the definition of a force (in this case: thrust): $$ F = …