There's some clever people out there, for sure.

Wow! Loved the explanation and the sounds.

Amazing 😍 and LOUD engine sounds

Amazing 😍 and LOUD engine sounds

Holy cow! I can hardly keep my bicycle turning at 15 rpm!

Very helpful, you answered my curiosity.

I want more videos like 5:46

At 4:35 engines are labeled backwards. Engine 1 is aircraft left and engine 2 is aircraft right

Suck Squeeze Bang Blow

Thanks. I always wondered how airliners started their engines. Very informative and easy to understand.

I often though the added droning noises where bearings especially in older engines.

Wow, nice!

Excellent.

Focus on the exhaust of the engine when the ignition starts, you can see the heatwave in the background

Italian Leonardo da Vinci had already found answers to many of these questions over 500 years ago.

Awesome thanks !

This is incredible to know, as scared as I am looking into a jet engine when i board a plane, it still is fascinating

I died of boredom after 2 minutes.

I’m an airline captain…and this is a pretty cool video… However, starting the 2nd engine with air from the first is NOT a normal procedure… With normal APU operation, both engines are started in the same manner… Cross-bleeding works fine(using air from the 1st to start the 2nd), but it’s not the norm….

Great explanation but one sound missing. I could not hear the igniters cracking. I always enjoyed hearing that when near a turbine starting.

Very informative . Thanks.❤

What happen if engine start st first stage only, will the sir flow to the other egde.

at 4:33 the #1 engine is #2 and 2 is 1

0:09 747 GANG

how come

Very nice video. Well explained for beginners like me, who are aviation enthusiasts. Thanks for sharing.

"How do airplane engines start?" Generally reliably.

Great explanation of the start sequence on the ground. What about the engine restarting process in the air?

No such thing as centrifugal force. Centrifugal motion yes, but not a force. You’re referring to centripetal force.

No one knows, it’s just magic

Starter shutt off valve is the valve that opens when pilot selects "start" to allow the APU air to hit the air turbine starter motor mounted at around 6 PM position on each engine. Starter shutt of valve is a butterfly type valve mounted in the air ducting between APU and the air turbibe starter, it is electrically controlled. Air turbine starters are high speed low torque units, however a built in reduction gear system converts this high speed low torque to low speed high torque which is capable of rotating engine through a gearbox, also mounted on the engine. Leave me a note if some one is interested to learn more. Any topic, airplane related.

This is enough to scare the daylights outta ya' if you're about to get on a flight.

Did you ever notice there are NO atheists on a plane when it hits turbulence?

Here we go again with more of that 💩 nauseating noise/music!!

So is 50% of max rpm considered the lowest speeds these engines run at or can they decrease below this once they are started?

Very Great.

Best explanation I've ever seen

GREAT INFO. FOR US OLD PROP PILOTS. I KNEW THE PROCESS IN THE OLD 707 DAYS. I HAVE HEARD THIS NEW PROCESS MANY TIMES. NOW, I KNOW WHAT I HEAR. THANKS.

Unnecessary annoying music

@5:00 i got a b888r.

this is very scare my cat is sad

Swap the engine position numbers @ 4:28...

I had a ‘70 Volkswagen Beetle that started the same way, only I had four friends provide the forward movement.

Good information

Thank you professor. You make a very good teacher.

Nicely explained.

Last statement you made that you're ready to fly is misleading. 😂 You didn't start engine two! 😛🤣🤣🤣

Can we please have it within the incredibly annoying and distracting background music?

Wrong

At 2:48 there is a minor suggested change. It's not the pressure of the air that ignites the incoming fuel. It's the existing flame in the chamber. An excellent video. Nice job.