Why does the lift coefficient increase at negative enough angles - /sci/ - Science & Math

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Anonymous
2016-11-03 14:39:51 Post No. 8452905
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Anonymous 2016-11-03 14:39:51 Post No. 8452905 [Report]

Why does the lift coefficient increase at negative enough angles of attack? I asked my professor, and he said he'd never really thought about it before. I'm guessing it's flow separation on the bottom of the wing, so like a stall in reverse?

Anonymous 2016-11-03 21:19:56 Post No.8453444
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Anonymous 2016-11-03 21:19:56 Post No.8453444 [Report]

Anyone got any idea?

Anonymous 2016-11-03 22:53:02 Post No.8453631
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Anonymous 2016-11-03 22:53:02 Post No.8453631 [Report]

>>8452905
> so like a stall in reverse
Yes. Just think of a symmetrical airfoil; the effect of stall will be the same in the positive and negative case. Assymetrical airfoils are a bit different but you get the idea.

Anonymous 2016-11-04 01:48:04 Post No.8453970
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Anonymous 2016-11-04 01:48:04 Post No.8453970 [Report]

I have literally never seen that behavior before. Maybe flow separation? You have seriously got me thinking.

Anonymous 2016-11-04 01:50:28 Post No.8453976
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Anonymous 2016-11-04 01:50:28 Post No.8453976 [Report]

>>8453970
Feels good to know my freshman question isn't actually that freshman after all. As soon as I know what I'm doing, I'm gonna check this out for myself.

Anonymous 2016-11-04 02:16:29 Post No.8454046
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Anonymous 2016-11-04 02:16:29 Post No.8454046 [Report]

>>8453976
Fucking kek, the guy who replied to you is one of two things.
1. A freshman in engineering
2. A highschool drop out

Anonymous 2016-11-04 03:07:43 Post No.8454132
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Anonymous 2016-11-04 03:07:43 Post No.8454132 [Report]

>>8454046
Let me feel like less of a freshman, just this once