AEROFOIL Generator and puzzlement
AEROFOIL Generator and puzzlement
(OP)
Unfortunately dont know what happened to my other thread?
Does anyone know of a good NACA aerofoil generator I want to take the xy plot int a 3d cad system
I need the section to have low drag and work between 20 and 50 mph
any advice freatfully recived as i am not an aerodynamics whizz by any means.I am reading about the subject but its very difficult to get the right answer from the web so i thought i would ask here first
Thanks
Does anyone know of a good NACA aerofoil generator I want to take the xy plot int a 3d cad system
I need the section to have low drag and work between 20 and 50 mph
any advice freatfully recived as i am not an aerodynamics whizz by any means.I am reading about the subject but its very difficult to get the right answer from the web so i thought i would ask here first
Thanks





RE: AEROFOIL Generator and puzzlement
Your other thread probably got red-flagged.......
Fe
RE: AEROFOIL Generator and puzzlement
Or if you are sufficiently well versed then some papers in the Journal of Fluids and Structures is a great place to find some new information.
Fe
RE: AEROFOIL Generator and puzzlement
thanks for the rplies though
RE: AEROFOIL Generator and puzzlement
Try NV-foil, or Profili.
RE: AEROFOIL Generator and puzzlement
Please try JAVAFOIL (free applet).
It is possible to save in DXF format!
So you can IMPORT DIRECTLY to your CAD software (also imports the mean line).
Please take a look at
http://www.mh-aerotools.de/airfoils/jf_applet.htm
PROFILI (not free) is also a very good software to generate NACA airfoils and have a big library of other ones.
Best Regards!
RE: AEROFOIL Generator and puzzlement
First you need to know the associated Reynolds number.
You need to calculate the following:
ReynoldsNumber=(FluidDensity x Velocity x ChordLenght) / FluidViscosity
For the Chord use the Mean Aerodynamic Chord Lenght, try to find in the literature the geometric calculation of that chord.
Then you need to find in the Cl vs Cd curve, the smaller Cd that you can find for your design Cl.
Cheers!