Fantastic video. Correlation of screw with propeller was very well explained.
@DeJONbomb21
3 жыл бұрын
great video! super simple and very easy to understand! thank you! I recommended this video to all my mates who study this :)
@727AC
Жыл бұрын
This is a simply great video. This really demystifies the difference between blade angle and blade pitch!
@malpayashyras.1393
3 жыл бұрын
Thank you very much for this video! It's very easy to understand. This helped me a lot in my Aircraft Propeller class especially because we are having online classes instead of face-to-face so it was hard for me to understand this topic but your video helped so much!
@RoddyMcNamee
3 жыл бұрын
@shyra Malpaya thank you for that, I'm glad it is of some use. Best of luck with the rest of your studies.
@orestism4118
3 жыл бұрын
Perfect Video on propeller Geometric and Effective Pitch! If you are reading PoF from Bristol books it's chapter 18. Really helpful!
@Michallote
3 жыл бұрын
Hey any clue on where to acquire this book
@orestism4118
3 жыл бұрын
There are many different online shops, Google "Principles of Flight, Bristol"
@akbarshoed
4 ай бұрын
Well done! Timeless classic!
@ok_sal
Жыл бұрын
thank you got my props exam tomorrow! :D
@RoddyMcNamee
Жыл бұрын
Good luck.
@sayedsaid4026
Жыл бұрын
Excellent explanation 👌
@abhilashm6711
3 жыл бұрын
Great teacher
@t_c5266
Жыл бұрын
If I was given motor power, and desired diameter, how would I optimize a new propeller design to maximize amount of airflow?
@RoddyMcNamee
Жыл бұрын
Mass flow of air = density x area of prop disc x velocity. If for a given altitude the density and area of the disc (based on prop diameter) are fixed, then the only thing left to vary is velocity. The velocity can be considered as the sum of aircraft velocity and inflow factor. The inflow factor depends on the prop efficiency. So, to maximize the mass flow of air trough the prop, the prop should be operated at the optimum angle of attack (where lift to drag is a max) to maximize efficiency and inflow factor.
@t_c5266
Жыл бұрын
@@RoddyMcNamee thanks!
@gopikrishnanmenon5035
16 күн бұрын
What will the angle of advance be with the aircraft stationary but propellers running?
@RoddyMcNamee
16 күн бұрын
@@gopikrishnanmenon5035 The angle of advance will be zero, which if you think about it makes sense as the aircraft won't have advanced.
@christopherjames8633
Жыл бұрын
What’s the difference between experimental mean pitch and geometric pitch ?
@aviator_himanshu520
4 жыл бұрын
Thank u so much sir
@eemtech1606
Жыл бұрын
In your video "Propeller Static Thrust Equation" you mentioned that the efficiency of a propeller is around 85%, do in many your videos about Froude's momentum, you mentioned that the efficiency is around that number. My question is, what is the relation between efficiency and that slip, which its unit also percentage?
@RoddyMcNamee
Жыл бұрын
Have a look at this video, it shows slip, the advance ratio and efficiency. kzitem.info/news/bejne/2KydvIWfpmh0bGksi=0Yu2css9pCWa-Tru
@eemtech1606
11 ай бұрын
@@RoddyMcNamee Thank you for the link, I now understand it.
@abhilashm6711
3 жыл бұрын
Sir ,but how to find pitch angle if we are gonna design new propeller and we have only the diameter of propeller?!!!
@RoddyMcNamee
3 жыл бұрын
@Roaring Aero you'll need more information than the diameter. You'll need to know the cruise speed of the aircraft and the cruise RPM.
@abhilashm6711
3 жыл бұрын
@@RoddyMcNamee sir can you give your WhatsApp or mail id or skype id,? Please?
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