I’ll never be a pilot neither I’ll ever make planes but it was interesting to watch nevertheless. Thanks Sir!
@mr.hijacker95689 күн бұрын
Thanks
@yigitcan82414 күн бұрын
Which one is more efficient here?
@milescunha528617 күн бұрын
Wish I could understand this better.
@2sc45818 күн бұрын
Thank you. All the other online calculators and explanations fell into place after watching your video. I appreciate it. I can now better position hole positions on bent flanges.
@theodorewoodrowwilson583823 күн бұрын
This is very well explained and very easy to comprehend and duplicate.
@piquecuriosity25 күн бұрын
I was not sent by AgentJayZ but he is a master also. So, it is a great job what you have done. Thanks for sharing knowledge great community. You mentioned at around 1:38 that burned air expands when it pass through turbines but if it is the case it should be pressurized as the expanded air lose its speed. But at that stage the aim is to gain speed by compromising pressure. Did i miss something? I would be appreciated if you explain it.
@chetanpb424928 күн бұрын
Thank you sir ❤❤❤
@kletops46Ай бұрын
Is this saying the Engine is "More Efficient" but develops "Less Power" (Thrust) ?
@RoddyMcNameeАй бұрын
@@kletops46 Yes.
@kletops46Ай бұрын
@@RoddyMcNamee Does that mean when ground based industrial units develop less power due to a decrease in barometric pressure, actually become slightly more efficient ?
@RoddyMcNamee29 күн бұрын
@@kletops46 I never considered that before, but yes, if the compressor inlet pressure drops, then theoretically for a given compressor outlet the compression ratio will increase, leading to higher efficiency.
@gopikrishnanmenon5035Ай бұрын
What will the angle of advance be with the aircraft stationary but propellers running?
@RoddyMcNameeАй бұрын
@@gopikrishnanmenon5035 The angle of advance will be zero, which if you think about it makes sense as the aircraft won't have advanced.
@user-ro2nq7gp9lАй бұрын
My wife is Irish 🇮🇪🍀, thanks this video🥹.
@ivanrodionov9724Ай бұрын
Thank you!
@erwinarief4567Ай бұрын
great video....
@alexandrebueno8892Ай бұрын
Great content! What book do you recomend to read about this subject?
@RoddyMcNameeАй бұрын
General Aviation Aircraft Design: Applied Methods and Procedures 2nd Edition by Snorri Gudmundsson (Author) - Chapter 15 has some good material on propellers.
@alexandrebueno889215 күн бұрын
@@RoddyMcNamee Thank you!
@Vgk36Ай бұрын
Incredible video! 👏 Thank you. Im a visual learner.. i hate the fact that I can't visualize the concept. Its like I have no imagination..... But instantly clicks when I see it. Good grief. Taking my fire detection block test today.
@fokkenhotz1Ай бұрын
👌👌👌👍
@krovavyinestor3714Ай бұрын
Super
@andor1900Ай бұрын
When the apu is ready to provide electric power to the aircraft but the aircraft does not need electric power from the apu, is the apu disconnected from the apu generator to prevent the apu from providing electric power to the aircraft? I would like to know how electric power from the apu is regulated per the demand from the aircraft. Thank you.
@SunilSundarАй бұрын
If I wanted to optimize a propeller for static thrust, like the fan in a wind tunnel for example, would I then use the V0 value to calculate the resultant relative wind for setting the AOA of my blade elements?
@RoddyMcNameeАй бұрын
Yes, that is what I would do.
@aumthakur1382Ай бұрын
Thank u ❤
@grekiki2 ай бұрын
It's not obvious to me that the point of max LD ratio is most efficient, do we not have to take induced drag into account in propellers?
@Labisa2562 ай бұрын
THUMBS UP
@임혜정-v9h2 ай бұрын
Hello! Can the method on 4:48 be applied at 50% of the radius? or 25% of the radius?
@RoddyMcNamee2 ай бұрын
@@임혜정-v9h yes, the same method applies.
@임혜정-v9h2 ай бұрын
Thank you. I have another question. Can there be a lift even though the propeller is rotating just by wind?
@mr.majster95752 ай бұрын
Great video. You explained it really nicely
@paulstephen1002 ай бұрын
Thanks. Was very helpful
@skyshots16852 ай бұрын
13 years on and this has just helped me massively for my POF exam ! Thankyou 😊
@leonardobht2 ай бұрын
Thank you!
@Mohammad-h3x6e2 ай бұрын
Can you please reference the book you got this from
@RoddyMcNamee2 ай бұрын
I don't think I got this from a book.
@ScottESchmidt3 ай бұрын
Good explanation, but you've got the magnet attractions backwards. Opposite poles attract, and like poles repel.
@denisfreestov89283 ай бұрын
Please, can someone explain. If efficiency = 50% then a = 1 and V0=2V. If efficiency = 80% then a = 0.25 and V0=1,25V. Why air speed after propeller decrease while efficiency of propeller increase?
@hearthawaii233 ай бұрын
I spent a while looking for a good explanation of this. This is a great explanation! Thank you!
@hamidsaeedi27213 ай бұрын
Hi, It was very good but sound is very low, please fix this issue thank you.
@yassiremad64073 ай бұрын
Thank you for explanation
@VicCarter-c3b3 ай бұрын
Hands down, the best explanation of how an AC motor works! I'm a visual learner and that was clear as day!
@luyen-co-tuong3 ай бұрын
❤❤❤❤❤very good
@kokeskokeskokes3 ай бұрын
Edited: I wrote a comment here but I went through your second video and it's clear, you go for max thurst while I am interested in lift. Thank you.
@fatimachowdhury60113 ай бұрын
What? North pole arracting north pole?
@utilityzc20393 ай бұрын
1:39 Can the flow speed go beyond Mach 1 just by using a converging nozzle?
@nicolasparra72393 ай бұрын
Hard to find this information, thank you man, would be amazing if you could record again the audio
@Hari-rx3sh3 ай бұрын
Hello Sir..Many thanks for this presentation... Appreciate your efforts.. I have a doubt.. At 2:05 , you have mentioned that the oil mist inside the bearing compartment cannot go past the labyrinth seal because of the low pressure inside the compartment caused by the pressurised airflow going inside through the labyrinth seal knife edges .... Is it technically okay to say that, "the oil mist cannot go outside through the labyrinth seal knife edges due to the continuous supply of pressurised air coming across the knife edges"... I'm taking the reference of the general property of a fluid where the flow of fluid in a particular direction is prevented in the presence of another opposing pressurised fluid flow...Can we omit that pressure differential phenomenon while explaining the oil sealing capability by only using the above mentioned property of fluid...Is it technically correct? Kindly pardon me for any mistake in my question. Thank you Sir!
@RoddyMcNamee3 ай бұрын
@hari-rx3sh Yes you can say that "the oil mist cannot go outside through the labyrinth seal knife edges due to the continuous supply of pressurised air coming across the knife edges". The reason the air is flowing in that direction is because of the pressure differential..
@Hari-rx3sh3 ай бұрын
@@RoddyMcNamee Many thanks for the explanation, Sir! Wish you the very best ahead.
@pancake-de5iv3 ай бұрын
thanks, i was going to claw my eyes out playing flyout
@johntheux92384 ай бұрын
The day we start doing that on rocket engine turbines we can probably lift a skyscraper tall rocket.
@durgeshkumar-ml9nq4 ай бұрын
sir your vise is not clear
@turtesfan4 ай бұрын
Anybody watched young sheldon and watched this?
@JTF17A4 ай бұрын
When use of air-cooled turbine blading began, General Electric favored film cooling whereas Pratt & Whitney favored convection & impingement cooling because they use less compressor bleed air, the turbine blades are simpler & cheaper to manufacture, there are no film cooling slots to clog, and the turbine efficiency penalty is lower because the blade cooling air is exhausted parallel to airflow.