Wing sections?

You always have a lot of information and ressources. Maybe you can give me an hand....

I am looking for papers, publications, websites about wing sections.
Particularly explaining the effect of the main characteristics such as thickness, camber, leading edge radius, position of maximum thickness...

Thanks

 

That's easy Tizbonbon, just google "airfoil" or "wingsection", and read read read.

 

Try the International Hydrofoil Society web site http://www.foils.org/ everything foils and where to find it.

 

Wing section

Are you going to use it for boat?

There is a lot of tread here in this forum that discussed that.

If it is about aerospace, lift theory starts with a flat plate first then progresses into airfoils.

 

Check Abbot and Von Doenhoff's (I think that's the spelling) book - Theory of wing sections. Apart from the effects of cavitation which few people really understand... you won'tneed very much more.

Tim B.

 

No, i think it s just for a 2nd year Aero-Hydro assignment . (if i am not mistaken)

Have a look at Theory of wing sections (available at the SI library), it will give you a large amount of experimental results.
and then play with Xfoil (find it from google) , which is a 2D panel code.

 

I second the choice of "Theory of Wing Sections" by Abbott & von Doenhoff (Dover Publications, 1959). It's an inexpensive paperback and essential for anyone interested in aero- or hydrodynamics. Most of the information in the book can also be found in NACA Report 824, "Summary of Airfoil Data" (http://naca.larc.nasa.gov/reports/1945/naca-report-824/naca-report-824.pdf).

However, airfoils really aren't designed so much by specifying the geometric parameters, like leading edge radius or position of maximum thickness, these days. Instead, one designs the pressure distributions on each side to give the desired boundary layer development, and then calculate the shape that will yield the design pressure distribution. The premier tool for doing this is XFOIL (http://raphael.mit.edu/xfoil/).

Another good source that discusses the philosophy of designing sections is Eppler's "Airfoil Design and Data" (Springer Verlag, 1990). It's strongly tied to Eppler's airfoil analysis code, but you could do much the same thing in XFOIL.

Some more catalogs of airfoils and airfoil data, including the highly successful Wortmann sections, can be found in Althaus, D., Wortmann, F.X.,'Stuttgarter Profilkatalog 1', F. Vieweg, Braunschweig, 1981.

A good discussion of design philosophy for low Reynolds number is Selig, Michael,"The Design of Airfoils at Low Reynolds Numbers", Soar Tech #3, 1984, published by Herk Stokely, 1504 Horseshoe Circle, Virgina Beach, VA 23451. Additional sections are presented in Selig, M.S., Donovan, J.F., Fraser, D.B.,"Airfoils at Low Speeds (Soar Tech Vol 8)", Herk Stokely, 1504 Horseshoe Circle, Virgina Beach, VA 23451. You can order the Soar Tech materials from http://www.aae.uiuc.edu/m-selig/ads/princeton_tests.html.

Some other references on designing sections for specific applications include:

Maughmer, M., Somers, D.,"Design and Experimental Results for a High Altitude, Long Endurance Airfoil", AIAA J. Aircraft, 26, No.2, Feb. 1989. (AIAA 87-2554).

Somers, D.,"Design and Experimental Results for a Natural-Laminar-Flow Airfoil for General Aviation Applications", NASA TP-1861, 1981.

Somers, D.,"Design and Experimental Results for a Flapped Natural-Laminar-Flow Airfoil for General Aviation Applications", NASA TP-1865, 1981.

For high lift airfoil design philosophies, see
Liebeck, Robert H. and Ormsbee, Allen I., Optimization of airfoils for maximum lift, J. Aircraft, Vol. 7, No. 5, Sep.-Oct. 1970, pp. 409-415.

Liebeck, Robert H., A class of airfoils designed for high lift in incompressible flow, J. Aircraft, Vol. 10, No. 10, Oct. 1973, pp. 610-617.

Liebeck, Robert H., Design of subsonic airfoils for high lift, J. Aircraft, Vol. 15, No. 9, Sep 1978, pp. 547-561.

 

Thanks to all.

Well, I went on google a bit more and I found two web sites that can be of interest. With most of the naca and nasa publication that can be downloaded.

http://naca.central.cranfield.ac.uk/
http://techreports.larc.nasa.gov/ltrs/ltrs.html

Thanks particularly to tspeer for the references, sure I will find something in that.

As nico said that was for an assignment. But it is always good to read more that needed.

Tizbonbon

 

There used to be a very good website on foils at Univ. of Indiana, Urbana.

(yes, HAL and "Breaking Away")

 

http://www.aae.uiuc.edu/m-selig/ads/coord_database.html

 

Academic vs Application

Mans intellectual inability to deduce the many variable involved in multidimensional foil shapes is quite limited wherefore you will find vast information about simple shapes and little about complex shapes.

Developments in nature has not commonly lead to simple shapes nor has it lead to very many rigid designs.

So if you are thinking of using your foil sections on a marine vessel then also get a good book on marine animals. Those books are full of ideas that have been testet extensively, but of course the whys and hows are lacking.