# UPWIND blade materials & geomtry

**URL:** <https://forums.nlr.gov/t/upwind-blade-materials-geomtry/622>\
**Category:** Materials\
**Created:** [January 10, 2013, 2:20pm UTC](https://forums.nlr.gov/t/upwind-blade-materials-geomtry/622 "2013-01-10T14:20:13Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [January 15, 2013, 12:30am UTC](https://forums.nlr.gov/t/upwind-blade-materials-geomtry/622/2 "2013-01-15T00:30:55Z")

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Dear Eneko,

The UpWind 5-MW reference turbine is based on the NREL 5-MW baseline wind turbine, but the NREL 5-MW specifications as published by NREL do not contain the detailed composite layup and material properties.

I have heard of Nijssen’s paper, but I’ve not seen it available in the public domain (and I don’t have a copy myself).

There is a question regarding the NREL 5-MW blade here on our forum: [Structural design of the wind turbine blade](http://forums.nlr.gov/t/structural-design-of-the-wind-turbine-blade/271/1). In one of the posts, I gave a link to a Sandia report that talks about groups that have reverse-engineered the composite layup and material properties based on the specified mass and stiffness distributions.

I suggest you contact the authors of these studies to find the data you are seeking. If you find the information, please post a copy.

Best regards,

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