How does the Boeing 737 Bleed-air system work?!

Why are Jet-engines essential in order for humans to be able to breathe in Aircraft, once they are above a certain altitude? How does the bleed-air and AC system work on an aircraft and how is it operated?
These are some of the questions that will be offered in this Video. As always I would love to hear if you have more questions and what else you would like me to talk about. Send in your suggestion below or contact me inside the Mentour Aviation app!

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I want to send a huge "Thank YOU!" to the channels who were featured in todays video. See the AWESOME full versions below!

HD Aviation Videos (External Air starter)

Mentor Pilot (Emergency descend from the cockpit)

Pratt & Whitney (How a Jet engine works)

[vivianisz]

I think I just struck gold here. This is more fun and understandable than reading books.

[robsteele]

The red and green pillows are correctly oriented port and starboard.

[tassosanastasopoulos]

Every time you say "as always" in a normal sentence I hear "I hope you're doing absolutely fantastic" in my head 🤣

[mattesrocket]

having studied ...air conditioning I like this episode. And when I landed with my last flight weeks ago and outside looked back to the plane (or at boarding) I saw this openings for the heat exchanger and thought "what is that? that's a cool question for Mentour" but forgot it then. Shortly later, today... here we go! 👍 And thank you for the effort for all this graphics and pictures, that was a lot!

[qlemens]

This video is a life saver! I'm gonna do my Aircraft General Knowledge ATPL exam next week and air conditioning was the one chapter i really struggled to understand. Until now. Thank you so much!

[CNder]

Went on a plane for first time and because of you and your videos I felt better about going. Thanks for being the awesome pilot you are and making these videos:) Thank you

[mysockC]

For what its worth the "dryness" at altitude is due to the _very_ low dew point of the air at 30, 000 ft. Something like -40 degrees or so. If you take a wet napkin and hold it over the air vent at altitude, it will freeze quite rapidly since the air is so dry. The water separator in the air cycle machine is really only needed when you're closer to the ground and the dew point is high enough to condense inside the expansion section.

[MarioFischer]

Your video in 19 minutes, has more easy explanation than 1 month of class with my teacher at uni. Thanks from Brazil!!

[rogerhargreaves]

It’s very complicated; but very well explained. Thank you for taking your time putting these videos together. RgY 👍💯

[PauloGaetathe_original]

One interesting fact about pressurisation that I read about is that this process of pressurising and de pressurising the aircraft is what makes most of the structural stress on the aircraft, so a plane that flies many short flights per day will get much more wear and tear than a plane flying long haul flights with more hours but only one pre/de pressurisation processes

[MikeyMcBryan]

I just have to say... that is one kickass thumbnail!

[henriklmao]

1:48
"And make it possible to breed inside of the Aircraft"
😂

[darkprose]

Planes are outstanding. Absolutely fantastic.

[julianarroupe]

It is so nice to see you using footage from argentina in 2:22! SABE airport

[raffleschan]

Thanks for all your videos. I'm a nervous flyer so learning more helps to make sense of everything that's going on. I think I've actually been converted to an aviation enthusiast (although the fear probably won't completely go away lol).

[flyingark]

You mentioned several times that the engines need bleed air to start the engines. I'd love to see a video about why that is, plus any other technical information about how jet engines work. I know there are several videos out there that dryly explain it, but it's just so easy to understand things the way you explain them. Thanks for the great video.

[emark]

I have the pleasure of repairing parts of the bleed air systems, great to see how you use it. 👍

[frilime]

Thank you Mentour for the video, can you explain the effciency difference in the "old" bleed air system and the newer compressor driven air system? What level of fuel saving is between the two systems?
Thank you again and have a great day.

[beboboymann]

Your illustrations are always top notch and help your narrative immensely. Way to go!

[rolandkronqvist]

I don't know why I find "the smell of burnt bird" so funny. :D