Is a Turbofan Engine or Turboprop Engine Safer? | Pilot Explains

Hello and Welcome the turbo fan and the turboprop are thetwo main engines that power commercial aircraft and they have a lot in commonbut I'm going to explain the differences coming up hey 74 Crew what's going onif you don't know about aviation so whether you're a pilot or an aviation enthusiast considersubscribing if you haven't watched the earlier blog that I did explain you howthe core of a jet engine works  this blog won't make too much sensebreaking down the comparison between a turboprop and a turbofan is simple nowthat you understand how the core of a jet engine is working to recap what Iexplained in that earlier blog in this stage of the core engine yet air isgetting sucked and compressed in this stage the compressed air is beingintroduced to fuel and a spark to create an explosion which goes at the back ofthe jet engine the back of the jet engine turns these fans in the backwhich also in turn turns the fans on the front of the engine which compressedmore air and continue the cycle and again this engine by itself would becalled a turbo jet engine which is not how your commercial aircraft work firstI'm going to explain how a turboprop works and later it will make sense whythis is a jet stream 32 this is the first model of turbine aircraft that Iflew I was super excited 

because I was finally flying a multi-engine turbineaircraft I remember the first time I walked up to it I thought wow this is sobig that's what she said and now I could probably fit 10 of those in a 747 theengines of a turboprop worked based on the exact same core principles of what Iexplained earlier on how a jet engine works here is the inlet of where the airis going into the engine on a jet stream and this is the exhaust section wherethe air is actually leaving the engine so the first two stages of this enginework exactly like a turbojet engine which I explained earlier thedifference is when the air is actually going out the back of the engineit doesn't use air to propel itself forward what it does is it turns theseadditional fans in the back these fans are on a separate shaft thatdrive the propeller on the front of the plane that you're seeing so instead ofair propelling you forward that air is driving these fans which is driving thepropeller which is pulling the aircraft forward if you remember the Sully videothat I did a few months ago where I talked about eating a bird just as wewere coming in to land that bird was able to make it through that propellerand into that tiny little Inlet to this day I have no idea how that bird wasable to miss the propeller and get into that small little hole while it wasflying talk about a rotten day now a turbofan is generally what you're seeingon most commercial aircraft if you've flown on a Boeing or if you've flown onan Airbus you've flown on a turbofan aircraft this is a diagram of theturbofan that you see on most commercial aircraft side-by-side this section ofthe diagram is actually this section of the engine that you see and this sectionof the diagram is actually this section of the engine this large fan that yousee on the front of the engine is working exactly like a propeller on aturboprop and this section of the engine is working exactly like a turbojet soit's getting the best of both worlds as the air is leaving the back of a turbineengine it is driving the fans that compress more air it is also drivingthis fan on the front just like a turboprop and it is propelling the planeforward so as that explosion goes out the back is pushing the plane forwardand driving two different sets of fan blades to suck in more air and use thatfront fan as a propeller 

that air from the propeller on the front is goingoutside the core of the engine and it's making a much more fuel-efficient engineespecially at lower altitudes this type of engine is called a turbofan engine ora high-bypass turbofan engine the term high-bypassis definitely a turn you're going to want to know if you're a pilotespecially if you're going from a piston to a turbine engine because that issomething that they may ask you in the interview this is a picture of the 747 -eight general electric engines it's something that I love these engines Ithink they look so cool they're also very very fuel-efficient the other nicething is that because they are so large it allows me to take a picture of it andshow you the different parts and how they work in real life in this photohere you're seeing looking back from the back of the engine forward that fan thatyou see at the very far end of the picture is actually the fan that you seewhen you're looking at the front of the aircraft the air that's going from thatfan is actually going on the outside of the core of the engine which is righthere and that air that's going outside the core of that engine is actuallyworking exactly like a propeller which I talked about earlier and the air that'sgoing out of the core from right here is using the thrust that's being createdfrom the explosion to push the aircraft forward so you're having two differentways that the aircraft is actually being propelled forward 

I'm learning so much this is exactly what I need I remember from back in my days when I was flying turboprop aircraft that people were nervous people often associated propellers with lack of reliability in the comments section below I want you to let me know now that you understand how similar a turboprop is to a turbofan are you gonna feel more comfortable flying on a turboprop aircraft I look forward to hearing from you until then keep the blue side up