Finally, a Flow component was used to map the Thickness Distribution onto the Mean Line: a lot less fuss than using the mathematical approach that was necessary in the 1930s! Brian De Vos MaVerified Download (Whats this) Very useful and much easier than cleaning up a NACA airfoil form airfoiltools. Reply Easy to use but missing an important feature. The design of vertical axis turbines is such that they can be. John Bryant AugVerified Download (Whats this) I would pay for a NACA-6 version.
Naca 6 digit airfoil generator generator#
The Mean Line was cleaned up by running it through a Fit Curve component, to smooth out the bump that inevitably occurs (with Abbot and von Doenhoff’s method) when the equation for the front portion and rear portion of the Mean Line meet. A two stage induction generator is proposed as a alternative solution with respect to. I’ve improved on the methods described in the book by using Cosine spacing of the samples along the Thickness Distribution, working from Trailing Edge to Leading Edge so that there are more samples in the critical Leading Edge area, as well as wrapping it around the Mean Line as a single curve from Trailing Edge to Trailing Edge. They are also tolerant of innacuracies in construction, dirt and insect accumulation, and real-world conditions generally. NACA's 4 series aerofoils are now rather old (they were developed in the thirties), but they are still useful for low-speed applications such as wind turbines or velomobile fairings. It's based on the equations and methods set out in Abbot and von Doenhoff’s classic student aerodynamicists’ text, Theory of Wing Sections. I've been playing around in Rhino 6 recently, and put together a GH definition to generate NACA series 4 aerofoils.
This has already been posted on the GH forum, but I suppose it should have gone here instead -)