Not repeatable therefore not real useful. The guy should rotate the airfoils to minimum drag each time, otherwise, he doesn't know if they are in comparable positions. It's also a shame he didn't replace the airfoil with an equal-flow-area rectangular shape. As a result he produces confusing and misleading results, inferring that a round shape has more drag than a rectangular shape!
Very interesting. Using this approach to an enclosed trailer for towing behind a vehicle would also make a big difference in mileage. What effect would a tapered tail to the trailer have versus a straight wall and how could a design of this be improved? Any other direction to accomplish this? Thank you.
There is more of this Video & other Video's in this series out there on youtube....
They were orginally posted by others... I shorten this Video for my new student pilots... I wish i had gone to school for this in my younger days, because i have enjoyed studying Fluid Dynamics on the internet.... What is your interest & can i help you find anything more...
Thanks for posting this - how wonderful to see and hear this guy at last - I've had his little book 'Shape and flow' on my shelf for over 35 years. Lovely to see a bit of old fashioned 'chalk and talk' by someone who has an intimate understanding of his topic .
Really educational !
Thanks for sharing !
fapproduction 4 months ago
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Anyone know what the units of the measure he is putting up on the board are?
sarawallen 11 months ago
Anyone know what the units of the measure he is putting up on the board are?
sarawallen 11 months ago
@sarawallen Arbitrary units. It's probably supposed to represent a linear scale of force, ie k*Newtons.
JaySmith91 4 months ago
Thank you for posting this piece of history. Much appreciated!
LuckyDuc1975 1 year ago
Thanks for sharing!
fingers1971 1 year ago
Not repeatable therefore not real useful. The guy should rotate the airfoils to minimum drag each time, otherwise, he doesn't know if they are in comparable positions. It's also a shame he didn't replace the airfoil with an equal-flow-area rectangular shape. As a result he produces confusing and misleading results, inferring that a round shape has more drag than a rectangular shape!
buggsy2 1 year ago
@buggsy2 Yeah, that part confused me. Also, near the end, I doubt the wire's frame was clear of air currents from inducement...
JaySmith91 4 months ago
Comment removed
buggsy2 1 year ago
Comment removed
buggsy2 1 year ago
Very interesting. Using this approach to an enclosed trailer for towing behind a vehicle would also make a big difference in mileage. What effect would a tapered tail to the trailer have versus a straight wall and how could a design of this be improved? Any other direction to accomplish this? Thank you.
Time2Flybiz 1 year ago
Thank You & I agree....
There is more of this Video & other Video's in this series out there on youtube....
They were orginally posted by others... I shorten this Video for my new student pilots... I wish i had gone to school for this in my younger days, because i have enjoyed studying Fluid Dynamics on the internet.... What is your interest & can i help you find anything more...
jfwinkflyer 1 year ago
Thanks for posting this - how wonderful to see and hear this guy at last - I've had his little book 'Shape and flow' on my shelf for over 35 years. Lovely to see a bit of old fashioned 'chalk and talk' by someone who has an intimate understanding of his topic .
humrv7 1 year ago
THANKS FOR SHARE THIS VIDEO.
MICMECMEXICALI 1 year ago