Project 8.3 - Evaluation of Self-Recording Thermal Indicators J. J. Mahoney
OBJECTIVES
The objectives of this project were to field test three new models
of thermal radiation calorimeters - (only two types were suitable for
use in this event),
INSTRUMENTATION
The types of instruments tested on
]
(CHEROKEE) were:
The Thermistor Calorimeter, in which the thermal radiation was
measured by a "bead" thermistor embedded in a copper cylinder.
The
+f
copper cylinder acted as the heat receiver,
The Passive Indicator,
In this instrument, chemical paints which
changed colors at certain definite temperatures (all above 100°F) were
put on the end of a block made of alternate sheets of different lengths,
of aluminum and heat insulator,
RESULTS
DELETED
‘The results
for the- Passive Indicators will be calculated for the preliminary report,
(All except one of the Passive Indicators gave readable results).
REMARKS
Both type of instruments used were 180° angle receivers.
This was
Quite fortuitous in that the ground zero direction for the event was
considerably off.
The third type of thermal indicator, a thermocouple type with self
COPIED/p
- LANL Re OE
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