01574oam 2200481 450 991071284080332120200131135244.0(CKB)5470000002497776(OCoLC)1107323792(EXLCZ)99547000000249777620190703d1921 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierTheory of the ideal windmill /by Wilhelm Hoff[Washington, D.C.] :National Advisory Committee for Aeronautics,1921.1 online resource (15 pages, 2 unnumbered pages) illustrationsTechnical notes / National Advisory Committee for Aeronautics ;No. 46"July, 1921.""Translated from the German, by Paris Office, N.A.C.A."--Page 1.No Federal Depository Library Program (FDLP) item number.Includes bibliographical references.WindmillsPropellers, AerialPropellers, AerialfastWindmillsfastWindmills.Propellers, Aerial.Propellers, Aerial.Windmills.Hoff Wilhelm1883-1392053United States.National Advisory Committee for Aeronautics,TRAALTRAALOCLCOOCLCFGPOBOOK9910712840803321Theory of the ideal windmill3526643UNINA