XFLR5....just powerfull and free....

[gery]

Hi all,

i send you he site of an incredible "airfoil analyse program".......jus impressive
and free...based on XFOIL calculator....

http://xflr5.sourceforge.net/xflr5.htm


some video

http://www.youtube.com/watch?v=6GP8sFcUuKk
http://www.youtube.com/watch?v=uOiIPm8uy6M
http://www.youtube.com/watch?v=pI7hzKUcCrg
http://www.youtube.com/watch?v=63kv2ejobB0
http://www.youtube.com/watch?v=n6PSVP95c-U
http://www.youtube.com/watch?v=mQVP-Xwun7U


soon

gery

 

[KJ_Lesnick]

So it can analyze a 3D airfoil and airframe?

 

[gery]

yes it can....i tested the Ho VI ....with the "real scale" dim....

 

[gery]

Parabolic lift curv...

 

[gery]

easy to use..

http://www.youtube.com/watch?v=CCJeagj0fgA

 

[KJ_Lesnick]

Can it even factor in interference effects between wing and fuselage?

 

[gery]

I think..

http://cadcam.e-monsite.com/rubrique,choose-or-adapt-the-airfoil,1122460.html

try it....

 

[KJ_Lesnick]

What are the system requirements? (I can't find it on the page)

 

[gery]

Just a standard PC XP equiped....

What program do you use as usual..????

Javafoil is too a good program for 2d airfoil analyse....all languages...

http://www.mh-aerotools.de/airfoils/javafoil.htm

regards

gery

 

[KJ_Lesnick]

Up to what reynolds numbers does this work effectively for?

 

[gery]

since 300000 to 3000000....chord 120 Cm...

 

[mz]

I've used XFLR5 extensively.
It's a nice tool, though the results must be taken with a grain of salt.
Basically you work in two phases:
-You first do 2D polars for the wing profiles (different AoA and Reynolds),
-Then you design a wing with those profiles and test it with various speeds, angles of attacks, center of gravity, control deflection etc

It's full of all kinds of menu options so I advise a newcomer to do a tutorial first - it's a bit hard to learn by just doing.

There is also possibility to do airfoil design.
The QFLR5 version also works on Linux.

 

[KJ_Lesnick]

Can it simulate reynolds numbers high enough to simulate say a corporate-jet or a fighter-jet?

BTW: At the penalty of sounding retarded... can you simulate an airframe with this?

 

[gery]

i don't think....real scale is possible, but a little bug on "area weigth"....
just made for gliders analyses....
have you got tested it for jets concepts...????

soon

gery

 

[mz]

Can it simulate reynolds numbers high enough to simulate say a corporate-jet or a fighter-jet?

BTW: At the penalty of sounding retarded... can you simulate an airframe with this?

Well, you can use any Reynolds number in the polars, it's just a frontend for Xfoil. And even mach and air density too. I don't know precisely the methods. I'm pretty certain you have to remain well below transonic.

In the 3d analysis you can build a primitive body too, I don't know how well that is taken into account in the calculations, it's probably more of a coarse notional thing.

 

[AeroFranz]

if the 2D calculations are run by XFOIL, then you must definitely remain subsonic. I believe there is a version of XFOIL, MSES, that does transonic flow. How accurately, i do not know.