# Unsteady Aerodynamics Turning Off

**URL:** <https://forums.nlr.gov/t/unsteady-aerodynamics-turning-off/2258>\
**Category:** Rotor Aerodynamics\
**Created:** [May 21, 2020, 1:06pm UTC](https://forums.nlr.gov/t/unsteady-aerodynamics-turning-off/2258 "2020-05-21T13:06:35Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\
**Post date:** [October 5, 2020, 12:44pm UTC](https://forums.nlr.gov/t/unsteady-aerodynamics-turning-off/2258/4 "2020-10-05T12:44:38Z")

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Dear Akheel,

The DEFAULT value for UACutOut is 45 degrees; you’ll receive this warning if the local angle of attach exceeds 45 degrees. I would not expect this warning to appear frequently. Receiving this warning frequently would suggest a problem with your model setup, e.g. poorly set model initial conditions.

Best regards,

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