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Old 10-20-2019, 07:58 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 1,049
Default Stall angle of attack ???

Does anyone know the approximate stall angle of attack for RVs ? I know this varies with airfoil, speed etc. A generalization of 15 degrees comes to mind, but you may have a more precise number. I am processing forum inputs on engine air intake that consider airflow at high angle of attack for max performance takeoff conditions.
Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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Old 10-20-2019, 11:17 PM
BobTurner BobTurner is offline
Join Date: Dec 2011
Location: Livermore, CA
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Stall angle of attack will not vary with airspeed.
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Old 10-21-2019, 12:18 AM
larosta larosta is offline
Join Date: Dec 2010
Location: Redlands, CA
Posts: 180
Default Some information available on the OnSpeed Project Website

Some interesting things and information Related to AoA happening with the OnSpeed project. Check out

Some interesting videos and papers on the subject. The project is entirely a not for profit volunteer based effort dedicated to making flying safer.

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Old 10-21-2019, 12:41 AM
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Ironflight Ironflight is offline
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,457

Your question prompted me to pull out my old and brittle copy of Abbott & Von Doenhoff’s “Theory of Wing Sections”. I seem to recall that the RV3 uses an NACA 23012 airfoil, and A&VD show this to have a stall AoA of right about 18 degrees. Of course, this is an ideal 2D airfoil - once you apply it to a 3D wing....usual caveats apply....YMMV....

Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
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Last edited by Ironflight : 10-21-2019 at 10:18 AM.
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Old 10-21-2019, 01:03 AM
gasman gasman is offline
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,902

A probe set at 45 deg from the pitot is used as a base for a differential pressure AOA gauge. That should be a good start for you.
VAF #897 Warren Moretti
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