In a turn the up-going wing causes a
- de-stabilizing effect due to increased AoA.
- de-stabilizing effect due to decreased AoA.
- stabilizing effect due to decreased AoA.
Explanation
As the aircraft rolls, the up-going wing rises relative to the airflow, which reduces its effective angle of attack and so reduces its lift. This loss of lift on the rising wing opposes the roll, giving roll damping. The result is a stabilising effect produced by the decreased angle of attack.
sauravkatwal asking:
Up going wing means down going aileron for that wing, down going aileron means more lift i.e more AoA and more drag?
help please!
Community Comments (8)
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bezma Posts: 2 09.11.2016 / 00:33
Yeah, I'm also confused about this question
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JD2016 Posts: 54 10.11.2016 / 18:29
Yes - you should be confused!
It's another poorly thought out question. If it's meant to be about stability it should be asking what effect say dihedral/anhedral has on lateral stability.
It's another poorly thought out question. If it's meant to be about stability it should be asking what effect say dihedral/anhedral has on lateral stability.
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Malohastaelhueso Posts: 4 14.11.2016 / 06:19
Calm down JD2016 the questions may be pointless and stupid, but that's why we are here...and you do provide some pretty handy referrals. So just do what you do best and stop complaining.
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Ivor Posts: 6 15.11.2016 / 17:03
I also believe that the answer is wrong. Up going wing has more lift and a higher angle of attack.
P
PART66Online Posts: 515 15.11.2016 / 20:44
I just do not understand why you stuck to the "lift"? Nobody asking you about lift here, you just need to understand what happens with AoA of wings in turn and it's effect.
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bezma Posts: 2 15.11.2016 / 21:51
Think I got it. In a turn, down-going wing has increased AoA but decreased speed and up-going wing has increased speed to complete the turn and therefore decreased AoA. Dimky, is that correct?
J
JD2016 Posts: 54 16.11.2016 / 02:26
"Wilco" Malohastaelhueso. :)
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sauravkatwal Posts: 14 25.11.2016 / 18:47
Well downgoing wing will have more AOA thus more lift and inverse in the upgoing wing. Thus, C of L shifts accordingly and the a/c will laterally stable (also known as Pendulum Effect)
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