Explaining the differences between how high-bypass and low-bypass turbofan jet engines work! ⬅️💥💨
2021 ж. 20 Қыр.
8 963 Рет қаралды
In this video, I explain the differences between civilian and military aircraft jet engines using diagrams I borrowed from Encyclopædia Britannica. This includes the bypass, exhaust nozzle, air intake, and even the turbine but I don’t discuss the turbojet core of each each engine as they’re more or less the same. To learn about how the turbojet core works and fundamental principles behind how a jet engine works, click here • An introduction to how... this video was made on 9/20/2021.
I’m sorry for stumbling on my explanation during various parts of the video because my lungs🫁 are in poor health. I would've gone into more detail about how these two engines differ but I decided not to for the sake of simplicity.
Great explanation! By the three minute point it was very clear to me why a high bypass turbofan is more efficient.
Yeah, they’re more efficient in many ways. Though both engines have their pros and cons, and I’ve actually learned a lot more about jet engines since I made this video.
You are the best teacher ever.
Aw thanks!
Very helpful and informative Thanks for publishing
You’re welcome! I’ve actually learned a lot more about jet engines since I made this video so if I were to remake this video based on what I know now, my explanation would be a bit different.
Great job Chris, enjoyed watching 😎👍
*Thanks!*
Thank You Very Much On This Presentation BTW. Bless You On Those Coughs :-)
Thanks! lol
Great explanation, thanks
Thanks buddy, I did screw up a few times so thanks for not taking it hard. I also learned plenty more about jet engines since making that video, so I'd go into quite a bit more detail if I wanted to redo the video.
Interesting video Chris!
Thanks!
@@ChrisZoomER You're welcome!
Fantastic video mate 🤩😍🤩😍🤩😍
Thanks! Though I'd like to note that I've learned a lot more about jet engines and how they work since I made that video, so I'm glad you don't think it's too crabby, lol
Excellent
I'm glad you like it!
Very interesting!
Thanks, did you learn anything new?
@@ChrisZoomER yes I did!!
@@AscendAviationYT *WOW* What fact did you find the most interesting?
@@ChrisZoomER Just explaining how everything works in each engine is very interesting! Basically the whole video is very interesting
@@AscendAviationYT Thanks!
Thanks for the explamation. Would just like to clarify regarding bypass ratios, eg. 10:1. So 10x the air passes outside the combustion chamber? Or is that in the combustion chamber? As it has the high pressure compressor & combustion is occurring there? Thanks!
Yes, high bypass engines are usually defined as having a bypass ratio of 5:1-10:1 or more. Low bypass engines are defined as having a bypass of 0.1:1-2:1 and actually "medium" bypass engines are often defined as having a bypass ratio of 2:1-5:1 though technically a medium bypass engine would imply an engine bypass ratio of exactly 1:1. I hope this helps.
Thanks
You're welcome!
Wow, nice diagrams. What is the Venturi effect?
The Venturi effect is when a fluid accelerates due to losing pressure when flowing through a constricting part of a pipe.
Oh, what class would that be taught?
@@sassypatty2666 Most likely a fluid physics course.
9:10 Correction: Divergent inlet and convergent exhaust nozzle!
That’s sometimes the case, but not always. What I meant is that the nozzle diverges a tiny bit at the very back after converging, the “de Laval” shape as I’ve been studying. The nacelle design is actually way more complicated than I could explain even in separate video dedicated entirely to that subject. I was trying to keep things simple, I’m sorry for the confusion.
GOOD STUFF! THANK YOU!
Thanks, you're certainly welcome!
all im gonna say is high bypass engines rarely produce a certain c word.
What c word is that?
All I'm gonna say is that's complete nonsense. They actually make more, and there are reports online that explain why.
@@paulshepherd8295 I guess that means that all the aeronautical engineers who work for P&W and RR Trent were lying to me about all of the differences between the two. I read various reports online and asked them if they were accurate, they said no so please don’t bother telling me what I got wrong.
@chrisszumiloski6920 Have you read 'Influence of propulsion efficiency on contrail formation' by Ulrich Schumann? Each generation of engines has become more efficient, largely linked to the steady increase in bypass ratio. The above report says 'Aircraft with more efficient propulsion cause contrails more frequently'. There are other reports that agree with this statement. Only this week there was a report in Aviation Week on work being done to reduce contrails by using synthetic fuels. Why would they spend millions doing this if the engines were not producing contrails? And I hope you realise that my original comment wasn't aimed at you?
Yes I do and I know that higher bypass engines are more likely to produce contrails, contrary to what those chemtrail conspiracy theorists have to say!@@paulshepherd8295
Cooler exhaust has more density than hot exhaust.
I know
siema Szumilowski. From where your parents are
Mostly of Polish heritage, some Slovak in there as well.