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Old 11-30-2024, 11:28 AM   #8 (permalink)
aerohead
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' paper '

Quote:
Originally Posted by Logic View Post
No one?
That's a video to save you reading:

Distributed feather-inspired flow control mitigates stall and
expands flight envelope

https://www.bamlab.princeton.edu/_fi...fd70b218cf.pdf

The paper does have lots of pictures based on self actuating spanwise flaps on aircraft wings. (Tested)
(Can people still read and comprehend..?
Do people consider research worth reading?
Would they consider it worth reading if it was posted by someone else..?? )
I read the paper.
I noticed some 'conditions', 'caveats', 'context':
1) The interest is for 'unmanned aerial vehicles':
A) operating at flight conditions
B) above Earth's boundary-layer
C) in two-dimensional flow
D) with Reynolds number dependency
E) of a perfectly-streamlined wing section
F) of varying angle of attack
G) with particular interest in high-angle-of-attack 'stalled' flow
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None of this would have anything to do with road vehicle aerodynamics, other than introducing a 'flap' ( rear spoiler ) capable of reaching up through separated flow high enough to reach the reversal point, at which flow reattached, a greater negative pressure regime would exist, such that pressure recovery might continue within the 'mended' flow, raising base pressure, reducing pressure drag, reducing overall drag.
1967 technology.
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