Yehiote Dynamics Associated with Submarine Rescue 



Vss = 



^2s 



'2s 



COS 6p -sin 6- 



u 



's 



L-Wg _l 



= Ts22s 



Us 



1 



^ sin 6p cos 6p_ 



cos Sycos 6p sin 6y -cos 6ysin 6p 



-sin 6yCos 6p cos 6y sin 6ysin 6p 



sin 6p cos 6p 



Ws 



- TszzsYsB 



The total angle of attack at the shroud can then be expressed as 



1/2 

 ^shroud = tan' j^ ^^gg^^^Zs) J , ^an'' [ Vng/ug,] 



or performing the indicated operation 

 **8hroud 



1/2 



/ (-sin5ycos5pU5 +cos5yVs+sin5ysin5pWs ) +(sin5pUs+cos5pws) j \ 

 (cos 5ycos6pUg+sin6yVg-cos6ySin6pW3) 



are then looked up on Figs. 4 and 5 and values of lift, L, , and drag, 

 Dg, on the shroud are calculated from 



Lg = P /ZS^C^y^ and Dg = p/ZSrCoV 



with 



Sr = bgCj 



2 2 2 



V = Us + Vg + Wg 



b, = 8 feet 



Cc =1.83 feet 



The lift and drag on the shroud are then resolved into forces on the 

 shroud Fgg and transformed into the body axis system, F h qj.j • 



1137 



