seems an interesting project here
try to make your model with as many quads as you can
its’ easier to add remove loops afterward anyway so make you life easier too!
also any idea on how long it takes to run a CFD sim on openfoam for such a plane ?
i’v see one script for making wings shape but look’s like there are many data structures for wings in think!
and the script cannot handle all data types!
thanks yes changing everything from tris to quads has made everything easier…it took me a while to figure this out. as far the time required to do a cfd run on open foam the correct answer is it depends. for subsonic incompressible flow (light aircraft) with fairly simple geometry it shouldnt take to long to get some useful data. as you get into transonic and supersonic flow (fighter jets and passenger jets) things get a bit more complicated and require more processing power and time.
The scale modelers used to say that there is always at least one error, even in the best model…
i think this is just as true for the real aircraft too… having talked to people involved in restoring aircraft like p51 and p 40 and having done a fair bit of maintenance work myself i can say that no two aircraft are exactly the same even if they are the same make and model and are constructed in the same factory.
one idea i have for a modelling/engineering project is to purchase the set of P51 mustang plans from ebay and use these as the basis for constructing as accurately as possible a 3d mesh (including all airfoil data) and use this to perform a cfd analysis of the aircraft. this will provide overall lift and drag co efficients and stability derivatives which you can then put into a 6 dof simulator code which will produce results that can be compared against extensive wind tunnel and flight test data that is available via the nasa technical reports server.
(These *.dat files describe many vertex points, such a dense mesh is not practical in Blender)
i think this is the root of my problem with modelling the wing. here is my latest attempt at accurately modelling the elliptical planform wing as you can see the mesh is very dense and somewhat impractical.
However, I suppose that the best use of such a contour in Blender is using it as the reference, matching the original airfoil with a subdivision curve, which control mesh contains just a dozen control points…
is there a guide that describes this process for a for a beginner ?