Data for NREL Airfoils

Discuss acquisition, use, and manipulation of airfoil data.

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Claudio.Pedrazzi
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Data for NREL Airfoils

Postby Claudio.Pedrazzi » Tue Nov 15, 2005 4:22 am

Hi everybody,
and ... thanks to NREL for creating this Forum. One feels to be a part of a community of interests and of knowledge, even if that is 10000 km apart.

My question is maybe too simple but ...

Are the coordinates data AND the lift and drag coefficients for the NREL family of airfoil public available? I mean for example S822, S823, S803 and so on. I made some searches, but without success.

As a side question, apart from the NREL developed airfoils, can someone point me to a good airfoil family to be used for very low wind speeds (so low Reynolds number) whose coordinates and performance data are available free of cost or with a low price?

thanks a lot
Claudio Pedrazzi

Corrado.Pinzana

airfoil coordinate

Postby Corrado.Pinzana » Tue Nov 15, 2005 12:34 pm

Hi Claudio

have a look at the Selig airfoils family: SG6040-SG6041-SG6042-SG6043-SG6050-SG6051.
They work fine for small rotors

bye
Corrado

Pat.Moriarty
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NREL series airfoils

Postby Pat.Moriarty » Tue Nov 15, 2005 1:50 pm

Hi Claudio,

Unfortunately, NREL licences the airfoil coordinates to interested manufacturers and therefore they are not publicly available. The exception to this is the S809 airfoil, which can be found in reports related to the NASA Ames wind tunnel experiment. These reports can be found on the NREL publications website.

http://www.nrel.gov/publications

There are other reports that you may find of interest that do have coordinates and performance data for non-NREL airfoils. Some also have performance comparisons to NREL airfoils, although no coordiantes. For example the following report has performance and coordinate data for the E387, FX63-137, & SD 2030 and performance for the S822, S834, and SH 3055.

http://www.nrel.gov/docs/fy05osti/34515.pdf

cheers,
Pat
Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity - Lewis Richardson.

Marshall.Buhl
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Licenses for NRELs S-series airfoils

Postby Marshall.Buhl » Thu Nov 17, 2005 8:30 am

I contacted our Technology Transfer Office about our airfoils and got this response when I asked what was required to have use of our airfoils:

...a license and a license fee. Depending on the company, a startup to small company can have a nonexclusive license for $1000 and a standard royalty rate based on the length of blade sold. For a large, established company..., the fees are higher.


Marshall
Mr. Marshall L. Buhl Jr.
NWTC-3811
National Renewable Energy Laboratory
Golden, CO 80401 USA
Marshall.Buhl@nrel.gov
Voice: +1 (303) 384-6914
Cell: +1 (303) 915-6623
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Claudio.Pedrazzi
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Postby Claudio.Pedrazzi » Fri Nov 18, 2005 12:24 am

Marshall,
and everybody,

thanks a lot for your answers.

TEROM SpA, the company where I work at the moment, IS a very small, very startup company :-) . I will pass on the information about the licensing of airfoils data, and eventually take contact again on that subject.

Best regards
and keep up the good work!

Claudio Pedrazzi

Zhou.Hua
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Postby Zhou.Hua » Fri Jan 27, 2006 1:33 am

Hi, Pat and everybody,

May I suggest that NREL prepare a list of airfoils, and state which one is in public domain, and which one is not ? This may save many people's searching works :)

Zhou Hua
School of Aerospace Engineering and Applied Mechanics, Tongji University
Shanghai, China

Pat.Moriarty
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Location: NWTC/NREL

Airfoils

Postby Pat.Moriarty » Thu Feb 09, 2006 10:19 am

Unfortunately, I don't have that list but Dan Sommers has a partial list

http://www.airfoils.com/pubs1.htm

to find out if they are publicly available try searching

http://www.nrel.gov/publications/

or some of the older ones are available here

http://www.osti.gov/bridge/

If anyone would like to post the results of their searching, that would be great.

You can also find more airfoil data tested by Michael Selig at UIUC here

http://www.ae.uiuc.edu/m-selig/uiuc_lsat.html

and a really handy airfoil search site here (although the NREL airoils are not there)

http://www.nasg.com/afdb/index-e.phtml
Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity - Lewis Richardson.

Zhou.Hua
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Postby Zhou.Hua » Fri Feb 10, 2006 3:06 am

Thank you very very much !
School of Aerospace Engineering and Applied Mechanics, Tongji University

Shanghai, China

Pat.Moriarty
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NREL Airfoils

Postby Pat.Moriarty » Fri Feb 10, 2006 9:14 am

Just to corret my earlier post above - after checking the NREL publications page, a lot of the NREL airfoils ARE publicly available now. Seems many were published in January 2005. Perhaps the patent ran out (?), so I'm not exactly sure if the licencing fee still applies. Happy airfoil hunting.
Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity - Lewis Richardson.

Claudio.Pedrazzi
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Somers, Dan M.: The S801 through S808 Airfoils

Postby Claudio.Pedrazzi » Mon Mar 27, 2006 8:02 am

Hi everybody again...
After a certain delay, I am still looking for the "right" airfoil family. Thanks to all the suggestions above, I begin to see the ... end of the tunnel :-). And in fact it IS true that most of the coordinates are now published.
Just for the sake of completeness, I still miss the following paper, that is a part of the list of Dan Somers. But, maybe due to the date (1987), it is not available under the NREL or OSTI publication search.

"Somers, Dan M.: The S801 through S808 Airfoils"

These airfoils should be also candidates for variable speed, variable pitch, small wind turbines. Can NREL somehow make this paper available, or are those profiles still proprietary?

Thanks a lot!
And best regards
Claudio Pedrazzi

Senior Project Engineer
Technical Dept.
TEROM S.p.A.
Bologna, Italy
www.terom.it
http://www.terom.it/ASP/Pages/eng/News.asp

Marshall.Buhl
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Re: Somers, Dan M.: The S801 through S808 Airfoils

Postby Marshall.Buhl » Fri Mar 31, 2006 8:27 am

cpedrazzi wrote:"Somers, Dan M.: The S801 through S808 Airfoils"


Claudio,

We have no record of such a paper. Are you sure of the title?

Marshall
Mr. Marshall L. Buhl Jr.
NWTC-3811
National Renewable Energy Laboratory
Golden, CO 80401 USA
Marshall.Buhl@nrel.gov
Voice: +1 (303) 384-6914
Cell: +1 (303) 915-6623
Fax: +1 (303) 384-7079

Pat.Moriarty
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Location: NWTC/NREL

Re: Somers, Dan M.: The S801 through S808 Airfoils

Postby Pat.Moriarty » Fri Mar 31, 2006 9:51 am

According to our librarian that report was never published, so your best option is to contact Dan Somers directly - noboby here as a copy, sorry.
Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity - Lewis Richardson.

Claudio.Pedrazzi
Posts: 47
Joined: Wed Nov 09, 2005 12:05 am
Location: Bologna, Italy
Contact:

Postby Claudio.Pedrazzi » Mon Apr 03, 2006 2:42 am

Well thanks a lot everybody...
the paper was actually mentioned in the list by Mr. Somers, posted in this same thread ... http://www.airfoils.com/pubs1.htm

Anyway I already contacted directly Mr. Somers, and he advised me that, of course, these airfoils are "technologically ancient" and better options exist.

Thanks a lot
best regards
Claudio Pedrazzi



Senior Project Engineer

Technical Dept.

TEROM S.p.A.

Bologna, Italy

www.terom.it

http://www.terom.it/ASP/Pages/eng/News.asp

Marshall.Buhl
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Dave Spera's "Wind Turbine Technology", ewb site

Postby Marshall.Buhl » Thu Jul 23, 2009 5:29 pm

Hi,

The second edition of Dave Spera's Wind Turbine Technology (ISBN: 978-0-7918-0260-1) is hot off the press and Appendix D is dedicated to the NREL S-series airfoils. You may want to take a look if you are interested in using the airfoils.

I am also working (at a low level) on a web page for the airfoils. The web page will have the information found in Spera's book plus information about how to get licenses, lift and drag data, and even airfoil coordinates.
Mr. Marshall L. Buhl Jr.
NWTC-3811
National Renewable Energy Laboratory
Golden, CO 80401 USA
Marshall.Buhl@nrel.gov
Voice: +1 (303) 384-6914
Cell: +1 (303) 915-6623
Fax: +1 (303) 384-7079

Irfan.Zafar
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Organization: Global Blade Technology
Location: Netherlands

Re: Data for NREL Airfoils

Postby Irfan.Zafar » Tue Jun 19, 2012 5:14 am

Hi,
I am designing a blade of small stall regulated wind turbine of about 11 meter rotor diameter. Currently I am looking for suitable airfoils which I can use for the blade. S822 and S823 airfoils from NREL appear to be most suitable for this size of blade. Can anyone please clarify that in order to use these airfoils do I have to obtain a license from NREL and what would be the license fee?
Can anyone recommend some other airfoils (apart from NREL and which are publicly available) which could be used for stall regulated wind turbines?
Thanks in advance,

With kind regards,

Irfan


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