Forum
Important Notice for New User Registrations
To combat an increasing number of spam and bot registrations, we now manually approve all new user registrations. While this may cause a delay until your account is approved, this step is essential to ensure the quality and security of this forum.
To help us verify your registration as legitimate, please use a clear name as user name or an official email address (such as a work, university, or similar address). If you’re concerned that we may not recognize your registration as non-spam, feel free to email us at with a request to approve your username.
Airfoil design functions in v2
Hi, I was trying the new Qblade v2, and found that some airfoil design/geometry function are missing compared to previous version. Is it me not finding them? Also running the polars is much slower than before, should that be expected?
Hi Rob,
you are correct. Some of the features that were avaliable previously are not available in v2. These features, mostly associated with inverse design and airfoil generation through splines, were part of the GPL licensed XFLR code that was integrated with previous versions of QBlade. This code has been removed due to incompatibility with the APL license. Also, XFoil is now not integrated with the source code but coupled with as an external binary.
I am wondering however why you experience polars running much slower than before. The exact opposite is true from my experience. Polar calculation should be much faster now as the evaluation over the AoA range is fully multi-threaded now. On my computer at least I get a significant speedup (with 12 cores) compared to the older versions. Maybe you are running on a single core VM or similar?
BR,
David
Ok, thanks for the reply!
For running polars, my machine got 12 cores, but the process seems to take very little cpu so maybe the issue is coming from my machine.
