Theory of Unsteady Propeller Forces 



Then, subtracting Eqs. (65) from Eqs. (39) and referring to Eq. (69) the differ- 

 ences of the components of force and moment due to water pressure acting on 

 the hull, which are denoted by Khfxo. ^HFyo. K^f^o, K^^^q, k^^^^^ and K^^^^q, are 

 as follows: 



^HFxO " %FxO ~ ^HFxO 



^A 2 p- 



2 ^^d ( ^ 1 ) 



K=l IbC^ 1 ) 



<°(^r^i) 



B(I) 



L^U 



+ m*(^j,7]j,s)L'o + 





(SH) 



+ ^1 



(SH) 



B 



d-r?!, 



^HFyO ~ %FyO " ^HFyO 



di^i , 



(SH) 



^HFzO " ^HFzO ^HFzO 



^ A 2 -•^d ( ^ 1 ) 





K = l '?b(^ 1 ) 



'r(^i-^i) 



BO 



(SH) 



+ m*(^j,r,j^s) 



B0*o BO 



3z* ^ B^ 



+ (-ir"'zo(^i'^i) 



>*k(^1'^1'S)' 



(SH) 



3s 



d-^i , 



'■HMxO ^HMxO " ^'HMxO 



J A 2 p^d^^Of 



BO 



(SH) 



+ (-ir Zo(^i'^i) 



BO 



Bt] 



(SH)J 



+ m*(^i,T7i,s) 



3<;6*° BO 



Bz* "^ 37*J 



(SH) 



(82) 

 (Cont) 



39 



