# Capability of Aerodyn in considering balde flap

**URL:** <https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057>\
**Category:** Rotor Aerodynamics\
**Created:** [June 10, 2019, 2:41pm UTC](https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057 "2019-06-10T14:41:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mahdi.Hatamzadeh](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Mahdi.Hatamzadeh](https://forums.nlr.gov/u/Mahdi.Hatamzadeh)\
**Post date:** [June 10, 2019, 2:41pm UTC](https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057/1 "2019-06-10T14:41:14Z")

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Hi

I want to know if the Aerodyn have the capability of adding any flap to the blades?  
I want to investigate the effects of adding flap to the blades in wind turbines. So please help me in this case.

thanks.

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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:** [June 11, 2019, 7:10am UTC](https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057/2 "2019-06-11T07:10:04Z")

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Dear Mahdi,

Are you referring to the flapwise bending of the blade or a trailing edge flap for aerodynamic control?

Best regards,

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**Author:** ![Mahdi.Hatamzadeh](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Mahdi.Hatamzadeh](https://forums.nlr.gov/u/Mahdi.Hatamzadeh)\
**Post date:** [June 11, 2019, 1:02pm UTC](https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057/3 "2019-06-11T13:02:56Z")

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Hi  
I’m studying on the effects of adding a trailing edge flap to wind turbine blades on reduction of induced dynamic loads.

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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:** [June 11, 2019, 1:29pm UTC](https://forums.nlr.gov/t/capability-of-aerodyn-in-considering-balde-flap/2057/4 "2019-06-11T13:29:42Z")

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Dear Mahdi,

The ability to actively control trailing-edge flaps has never been a fully supported feature of FAST / OpenFAST. There has been discussion on this forum regarding using existing features of FAST plus customized enhancements to model actively controlled trailing-edge flaps, e.g. see: [Movable trailing edge flaps implementation - #11 by Jason.Jonkman](http://forums.nlr.gov/t/movable-trailing-edge-flaps-implementation/858/11). Moreover, a recent pull request into OpenFAST (not yet merged into OpenFAST dev) should allow this capability to be fully supported in a future version, see: [github.com/OpenFAST/openfast/pull/213](https://github.com/OpenFAST/openfast/pull/213).

Best regards,