Xfoil batch windows

What do people use for "A" see below in Airfoils to arrive at sensible results in Newtons? Thanks tspeer. It's a great pointer though, for where I can plug in the selected foils afterwards, to see what it spits out On the subject of drag, and disc loading - that's where I'm expecting my prop to look "radically" different to normal - I'm going for as much "linear" loading as possible, so the prop will have a very thick big chord hub area, and small chord tips probably.

We shall know in a few days if that's even possible, after the code's run it's course. Observations from a few days of XFoil madness. XFoil is highly unstable - it produces different results under supposedly identical situations yes - same everything, after INIT , and crashes too often. The UIUC Airfoil database has a lot of inconsistencies data not normalized, spurious points, file errors, inconsistent definitions for 0-degree AoA eg: "standard" chord , and big mixture of data quality - some foils have a few dozen points, others have hundreds 3.

J-Splines are way cool. The "unstick" code needs to be run in a separate window to kill dead xfoil processes thus allowing the UIUC program to complete. Instructions etc are in the source or run with the -help or -man switch. Well , you can alway reach the creator I mean Mr. Mark Drela. Joined Apr 17, Messages Location Utah. I've been doing something very similar, using X-foil and a genetic algorithm to try to optomize an airfoil for various conditions.

Based my airfoils on the hyperbolic mean line I posted here a while back. What I do to get around the x-foil instabilities you mention is to vary the number of steps with each test, and to re-test my best airfoil each cycle so as to filter out anything that was selected due to some chance error in X-foil.

I have the reynolds number part of the test criteria to be entered by the user, I just leave ncrit at the default. My code is in Delphi rather than python, and is currently set up to look for the xfoil. Since my 1st post here, I've perfected my particle-swarm-optimization I dropped the inferior genetic idea improvements and the results are spectacular.

I've downloaded an analyzed about existing airfoils from databases all over the internet, and then I pick whichever is the best for my particular regime e. You must log in or register to reply here. Latest posts. Latest: Turd Ferguson 1 minute ago. Hangar Flying - Off Topic.

Rotor revolution Latest: dong 7 minutes ago. Feb 8, Feb 5, Jan 25, Jan 23, Jan 21, Jan 19, Jan 18, Jan 16, Download the file for your platform. If you're not sure which to choose, learn more about installing packages. Warning Some features may not work without JavaScript. Please try enabling it if you encounter problems. Search PyPI Search. Latest version Released: Oct 25, Navigation Project description Release history Download files.

Project links Homepage Download. Maintainers danieldevries. Then, installing XFoil should be as simple as running pip install. For other features and specifics, see the documentation in the Python source files. Will Will 81 1 1 silver badge 10 10 bronze badges. The only reason I'd see is that the process. Not knowing what "xfoil. Please provide the exact call so people can see the timeout value you're using. If the wait really has a timeout, then it should kill the CMD process that runs the batch file.

As is, it will not kill the xfoil. I'm certainly sure that this timeout command will work in some cases, I've tested this code for a while and it will kill the batch most time when xfoil. However, I may guess that there's a certain circumstance that xfoil. The console remains open because xfoil is still attached to it. It will close as soon as xfoil either exits or is forcibly terminated or detaches by calling FreeConsole.

The latter isn't a factor in your case, so focus on killing xfoil. Then you can use process. CMD and xfoil , and this should kill xfoil.

Then use process. Show 6 more comments. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook.