cnd
Member
I'm looking to "search" for an ideal set of airfoils for use in a Prop, using a genetic algorithm, and to 3D-Mill the results to compare prediction with reality. I've got the shop setup, and I'm an ace programmer, but I'm having a bit of trouble working out how to manage the "unit chord" idea.
Does anyone here have a good grasp on the setup needed for getting results from Xfoil that can be compared to real measurements?
Specifically, for a chord of 75mm, and a tip speed of 200m/s at sea level in a "dirty" wind tunnel, what settings do I need and how do I put them all into a file with my genetically-produced airfoil shape so I can extract the lift and drag at various angles of attack?
I realize I'm new to this forum, but if someone were to take the time to help (or even, send me a sample file(s) to use), I'll repay the kindness by posting here my source code, & results.
The code plan is to make it general purpose - enter some general parameters for the propeller a computed "ideal" will be calculated, and for anyone with a RML-compatible milling machine (eg: Roland), a resulting actual wooden prop can be in your hands a few hours later.
Chris.
Does anyone here have a good grasp on the setup needed for getting results from Xfoil that can be compared to real measurements?
Specifically, for a chord of 75mm, and a tip speed of 200m/s at sea level in a "dirty" wind tunnel, what settings do I need and how do I put them all into a file with my genetically-produced airfoil shape so I can extract the lift and drag at various angles of attack?
I realize I'm new to this forum, but if someone were to take the time to help (or even, send me a sample file(s) to use), I'll repay the kindness by posting here my source code, & results.
The code plan is to make it general purpose - enter some general parameters for the propeller a computed "ideal" will be calculated, and for anyone with a RML-compatible milling machine (eg: Roland), a resulting actual wooden prop can be in your hands a few hours later.
Chris.
