iv 
ILLUSTRATIONS 
co ono ol 
10 
11 
12 
13 
ANAL 
A2 
A3 
Bl 
B2 
B3 
B4 
B5 
B6 
B7 
Low drag strut array mounted on USS BAYA. . . page 3 
Tower array mounted on USS SEA DEVIL ... 4 
System block diagram... 4 
Thermistor assembly. . . 6 
Apparatus for finding the time constant of temperature 
sensor... 8 
Basic temperature bridge . . . 9 
Depth bridge for data system ... 12 
Visual monitor and recording system. . . 13 
Digital data recording system .. . 15 
Typical (simulated) sample of one scan cycle from 
printed tape recorder . .. 17 
Temperature corrections ... 20 
An iterative method for determining a 7 associated 
with a given 7. . . 28 
Fit of temperature data along strut. . . 30 
Depth of isotherms as a function of time obtained from 
an array moving at the thermocline at a fixed horizontal 
speed... 31 
Anderson's compensation method . . . 34 
New compensation method . . . 35 
Resistance vs. temperature curves for the eight Veco 
thermistors used. . . 38 
Wheatstone bridge .. . 42 
Thermistor resistance vs. temperature . . . 42 
Asymmetric half-bridge. . . 44 
Beakley's bridge circuit. . . 44 
Departure from linearity vs. temperature for Veco 
32Al1 thermistors... 51 
Maximum departure from linearity (10°C range) vs. 
series resistor for Veco 32Al1 thermistors . . . 52 
Maximum departure from linearity vs. temperature 
range... 93 
