99.3-= = --E 



99.2-1 = = = == = = = = = = = = = = = = = = = = = = = = 



99.1-1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 H=H= 

 99.0J-LLil Ujj- 



■■ 





-t * - I 



Test Conditions: 



n / 



Significsnt W3V6 Heiglit 14 ft 



J. u 





^ - J- 



Head Seas 



J ^ 





T V ^ 



Ship Speed, 15 knots 



^ t V 





-/ V -.^ 



"ifl n- 



7 / -r 





EEin? i ==^ ii = i 



• Experimental Data 



96.0 



li ^^ 





-, 2- -, ^ 









'^ A -. 



95.0 3 



i bf lyf riM-t-l-i ) J 1 1 1 



/ 



-^?* 2 == 



94.0- p : ^?- 



93.0-= = = - = --E=-E±- = EE-E^- 

 92.0- = = = = = = = = = ====^^=== = = ^£==2 



91.0 J 1 1 1 1 1 f \^ 

 90.0.E___ = _ = = = = ^__ = f^^- 



/ 4 / ' 



iiiliiiipniniiEEEE- 



Hi 1 1 [1 



^•* I Z 





^ ^Z ^ 





t. ^ ^< 





A^-/ 2-5. 





^ 2 y ^ t 



r\ai r» t'A • •* 



/ ^ ^ ' 





-, t J 





' J ^ 





on n - _*_' I. L — 





uU.U 1 / J / 





/ ' / 





/ / y 





-/t-frt-y^ 





= SiS^ ^ 





70.0- ===.======.^1^==,=====,,,, 



E — - E = 17.1 degree^ 



60.o^ Z5^:£ (( q 



, . 



^jz7=t-± -- q 





50.01— ^3^?--^— ± ^ 



M 1 1 1 1 1 [■ 



20.0-.^.^^.^. .^^3^^=^ Je = 



^"•°|il 1 N 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 i 1 1^ 



—M-M — ^~~S ' 



0.6 

 0.7 

 0.8 

 0.9 

 l.O 



3.0 



4.0 



5.0 



6.0 

 7.0 



8.0 ■£ 

 9.0 a 

 10.0 ^ 



O- 



I 



'20.0 



30.0 



40.0 



50.0 

 60.0 

 70.0 

 80.0 

 90.0 

 100 



v2 = x2/E 

 Fig. 7 Cumulative Distribution of Variation in Pitch Angle, Destroyer 



(See Fig. 6 for corresponding histogram.) 



12 



