YehioZe Dynamics Associated with. Suhmavine Rescue 



DSRV 



AFT HATCH-FORE-AFT CURRENT 

 DISSUB ROLL ANGLE - 



FORWARD HATCH-ATHWARTSHIP CURRENT 

 DISSUB PITCH ANGLE ■= 



— EXPLORATORY RUNS 

 FINAL RUN 



45 



BOW 

 DOWN 



22.5 



22.5 



45 45 

 BOW BOW 

 UP DOWN 



22.5 



e 



22.5 



45 



BOW 

 UP 



DISSUB PITCH ANGLE DISSUB ROLL ANGLE 



Fig» 36, Experimental Results 



RESULTS OF MANNED SIMUI-ATION PROGRAM 



The experimental results of the simulation study are sum- 

 marized in Fig, 36, Two sets of curves are shown, those for the 

 fincil runs, of which Fig, 35 was an example, and those of earlier, 

 exploratory runs which were made prior to the inclusion of the shock 

 mitigation system in the simulation. Performance of the final runs 

 did not meet those of the exploratory runs. Schedule constraints 

 did not permit much training with the use of the shock mitigation 

 system. The pilot believes that with such training the results of the 

 two sets of runs would match more closely. 



On the basis of these results, we have tentatively arrived at 

 the following performance predictions, 



a) Mating on the aft hatch is feasible for currents in excess 

 of one knot at all attitudes of the DISSUB (up to 45 degrees) 

 and headings of the DISSUB with respect to the local cur- 

 rent, 



b) On the forward hatch, we have to distinguish between 

 longitudinal and athwartshlp currents. In athwartshlps 

 currents the goal of mating in a one knot current can be 

 achieved except possibly for very high DISSUB roll angles 

 which require the DSRV to mate bow up to the current. 

 With respect to longitudinal currents, on those submarine 



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