Aeroelastic Instability - Single Degree-of-Freedom System (SDOF)
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- Опубликовано: 12 сен 2024
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A single degree-of-freedom model to investigate basic aeroelastic instability in bending.
Your explanations are amazing. For having followed a graduate level course on Aeroelasticity, this summarizes and explains the problem much better than what I had in class. It really shows the emergence of the aerodynamic damping in the vibration equations. Great work!
i am an aerospace engineer and i learned structures more from your videos than i learned in class. keep it up and keep posting structures videos. also do post more videos aeroelasticity and please make videos about stress flow in thin walled structures.
Such is the mediocrity in the aerospace subject in universities, i don’t know why that is in the subject.
excellent work
Excellent video as always.
Can you make a video explaining all the aeroelastic phenomena??? That would be really amazing!!!
As soon as I can figure out a way to keep it reasonably short.
@@Freeball99 That would be phenomenal!! Thank you!
I hope the next video is the binary aeroelastic model. Good job explaining this!
It's a lengthy problem - especially if I use Theodorsen for unsteady aero. As soon as I can figure out how to keep the explanation to under 30 mins, I'll do it.
Do you have full lecture series for aeroelasticity @Freeball99
thnak you
can you elaborate on dCx/dalpha becoming negative beyond stall conditions? Even for SDOF airfoil derivation.
This is just based on empirical testing. For most cross-sectional shapes, and certainly for any airfoil, this will be positive (i.e. increasing the angle of attack increases the force in the upward direction). The types of shapes for which this would be negative includes rectangular cross-sections, like say a water tank.
BOTTOM LINE: is that you will never be able to model the flutter of an airfoil using a single degree of freedom approach (because it is always stable using this model). At a minimum, one needs to add a torsional degree of freedom to the vertical degree of freedom.
you missed that the term of velocity is squared when you substituted it and found equation 10
The velocity should not be squared (it is actually the previous line that has a typo - I mention this in the video).
thank you so much. how can i contact with you sir? may I have your E-mail???
apf999@gmail.com