Theory of Unsteady Propeller Forces 



(mN) 

 ^FxO 



,(mN) 

 'FyO 



- LtI NG,(^)d^'| ]/EZv^_^^_^dv, 



EtI NG,(Od^ /i4f^^- 



i[5„(^)+^(f)v] 



X ,mN- n- 1 



■'^[9fji(S) + e{^)^] 



X ,mN-n+ 1 



dv , 



(mN) \- 2L C\,r ,A^AA fi/ l - V 1 fv ^i[^M(^)+^(^)^] 



^FzO = LtJ NG„(^)d^ J y j-^-^ 2 t^x,mN-n-l e 



% 



+ V 



-i[^M(^) + ^(f)^J 



X ,mN-n+ 1 



■dv , 





i[^M(^)+^(^)^] 



V 



-i[eM(f) + 5(^)v] 



e ,mN-n+l 



<:V- Ef /NGn(Od^/v^(^ 



n To -1 ^ 





■ dv , 



i[^M(^^)+^'(^)^] 



+ V. 



-i[e„(^)+0(f)v] 



, mN-n+1 



i[^M(^) + ^(^)^] 



x,mN-n-l 



-V , , e-^^'«^^^*''^'^^H)dv. 

 "x, mN-n+1 ^ J/ 



4:d' = E ^ f NCpD[l + iW^f] V*„ V*,„^.„ ^(O^d^ 



(129) 

 (Cont) 



61 



