TEAL ASTM EAT SESS SE TOT AD OY TERRE ANEMIA 
150 
130 
= 
N 
fo} 
eer cae 
TRANSDUCER _ 
OPERATING UNATTENDED 
INPUT POWER, W 
= 
=a 
(=) 
100 
POWER 
FAILURE 
90 
1200 1600 2C00 ooco 0490 0800 
24-HOUR CLOCK TIME 
Figure Al8. Input power vs time. 
had been possible between 1715 and 1830 on 2! May. This conclusion is reinforced by the 
rapid drop in required input power when the in-air test was rerun at NOSC on 29 May. The 
lesser input power drop between 1930 on 2! May and 0815 on 22 May might have been due 
to further decrease in friction as the bearings were wearing in. 
RECOMMENDATION 
It is recommended that the windage loss characteristic of the projector be checked 
by a laboratory experiment and that the final conclusion be expressed tn the form of a 
windage loss equation. This equation would relate windage loss power to the combination 
of the type of gas, ocean depth and temperature, and overpressure within the projector. fhe 
laboratory experiment would compare the windage losses at measured temperatures, first 
with helium, then with nitrogen. These data would then be compared with the Pend Oreille 
results. 
x 
39 
ARN HE I 
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