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Main Rotor Airfoils

What airfoils are used in Helicopter Main Rotors? by Sparweb
Posted: 29 May 03 (Edited 30 May 03)

I found this list on the UIUC's website.  The list is quite extensive, including almost every make and model of aircraft I can think of.

http://www.aae.uiuc.edu/m-selig/ads/aircraft.html#helicopters * Site was moved *

I've clipped out the piece for the Bell helicopters below.  In my own work, I have already identified that the tip airfoil of the Bell 212 is not exactly NACA0006, because the outboard 80% is modified by inserting a wedge at about 25% chord to produce a "camber".  I would theorize that this has something to do with autorotation, but I quickly get out of my depth.

 Bell 200 XV-3 (2 blade rotor)                          NACA 0015                     NACA 0015
 Bell 200 XV-3 (3 blade rotor)                          NACA 23015                    NACA 23015
 Bell 204 UH-1                                          NACA 0015                     NACA 0015
 Bell 205 UH-1 Iroquois                                 NACA 0012                     NACA 0012
 Bell 205 UH-1 (new blades)                             Bingham 12%                   Bingham 8%
 Bell 206 OH-4                                          NACA 0011 mod                 NACA 0011 mod
 Bell 206 OH-58/TH-67                                   NACA 0012 mod (11.3%)         NACA 0012 mod (11.3%)
 Bell 209 AH-1 Cobra                                    NACA 0009.3 mod               NACA 0009.3 mod
 Bell 209 AH-1 (K747 blades)                            Boeing VR-7                   Boeing VR-8/-9
 Bell 209 AH-1J Sea Cobra                               Wortmann FX 69-H-098          Wortmann FX 69-H-098
 Bell 212 UH-1N                                         NACA 0012                     NACA 0006 ("droop snoot")
 Bell 214A                                              Wortmann FX 69-H-098          Wortmann FX 69-H-098
 Bell 214B                                              Wortmann FX 69-H-098          Wortmann FX 69-H-098
 Bell 222                                               Wortmann FX 71-H-080          Wortmann FX 71-H-080
 Bell 249 Hueycobra                                     Boeing VR-7                   Wortmann FX 69-H-080
 Bell 292 ACAP                                          Wortmann FX 71-H-080          Wortmann FX 71-H-080
 Bell 301 XV-15 (Boeing ATB)                            V43030-1.58/VR-7              Boeing VR-8
 Bell 301 XV-15 (original blades)                       NACA 64-935/528/118           NACA 64-(1.5)12/208
 Bell 406 OH-58D Kiowa                                  Boeing VR-7                   Narramore 8%
 Bell 406LM                                             BHTI M406183                  BHTI M406183
 Bell 407                                               Boeing VR-7                   Narramore 8%
 Bell 409 YAH-63                                        Wortmann FX 69-H-083          Wortmann FX 69-H-083
 Bell 412                                               Boeing VR-7                   Wortmann FX 69-H-080
 Bell 427                                               Boeing VR-7                   Narramore 8%
 Bell 47G-2 H-13G wood blades                           NACA 0017                     NACA 0011
 Bell 47G-2 H-13H metal blades                          NACA 0015                     NACA 0015
 Bell 47J HUL wood blades                               NACA 0016                     NACA 0012
 Bell 47J H-13J metal blades                            NACA 0015                     NACA 0015
 Bell 48 YH-12                                          NACA 0018                     NACA 0012
 Bell 54 XH-15                                          NACA 23017                    NACA 23011
 Bell 61 HSL high twist                                 NACA 0012                     NACA 0012
 Bell 61 HSL low twist                                  NACA 0018                     NACA 0012
 Bell-Boeing 901 V-22 Osprey                            XN28/XN18/XN12                XN09

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