Small Airplane Design Tutorial 23 Propeller Selection

[@jo21e6]

That video is improving the quality of KZbin videos, thank you very much!

[@stanleyjay1114]

Sonja, really enjoy your videos. I wish you a Merry Christmas and a berry good new year!!

[@sonjaenglert]

Thanks everyone for their feedback. I assume some of you have noticed something weird with the blade section drawings on a couple charts. I guess I could have drawn them more realistically. Task for my viewers: draw the blade angle correctly. Hint: rotate them CCW.

[@BasedF-15Pilot]

I have not flown a prop driven aircraft in forever, but I stayed for the whole propeller TED talk. :)

[@tommyn47]

#1 You go, Sonja!

[@goaway7346]

Very informative.

[@andymunnings9109]

👍

[@davidg3944]

I've not seen a propeller design like 0:47 before, how does the very tapered tip work?

[@andreassittig2772]

13:19, your suggestions for static WOT rpm: There is a video by Jonas Marcinko (kzbin.info/www/bejne/fnq3ZJhnhsyjnqM) where the WOT static rpm is a bit higher than level-flight WOT rpm for some pitch settings of the newly installed ground-adjustable Eprop propeller. I presume the narrow-bladed propeller blades go into a relatively low drag stall state when revved up on the ground.

[@txkflier]

On my electric-powered radio-controlled models, I try to use a prop that has a diameter-to-pitch ratio (D:P) of at least 1.5:1 and no more than 2:1. This provides good acceleration on takeoff, good cruise speed, and longer flight times.