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NACA 2300 series stall behavior at low R numbers

NACA 2300 series stall behavior at low R numbers

NACA 2300 series stall behavior at low R numbers

I note that the lift curve has a rather sharp break-off for this series of airfoils. I have a book published in the 1940's that indicates a gradual stall at lower Reynolds numbers but which does not give actual lift curves, pitching moment curves, etc. for low Reynold's numbers.

Does anyone have airfoil data for these foils at Reynold's numbers for around 30 mph stall speed and 60" wing chord?

Other low R number information for use at low light aircraft speeds would be useful too. I know of the UIUC site but that is for very low R number's typically for RC models and UAV's.

I would be looking at a 15% thick section tapering to 9 or 12%.

RE: NACA 2300 series stall behavior at low R numbers

Somewhere between the UIUC model airplane Rn, and the NACA high-speed Rn, you can hunt around for middle-scale Rn data from, for example, the NREL, perhaps Sandia Labs.  They've been testing full-scale wind turbines for decades and maybe that airfoil has come up by now.

Wind turbine aero tests usually need the post-stall region because blade stall is a common way to regulate RPM in high wind speed.
Good luck.  If you find anything, please leave a note here because I like digging up this stuff, too.

Steven Fahey, CET

RE: NACA 2300 series stall behavior at low R numbers

Hi BDD2009 !

Sorry I am to late with any useful reply. Thr NACA TR 586
"AIRF. SECTION CHARACTERISTICS AS AFFECTED BY ...."  It contains 23012 data from RN 172.000 to 3.170.000.



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