RESULTS
All equipment functioned properly and good records were obtained.
Since the panels may be considered to have a 27! field of view, the
misplacement of air zero did not result in a complete loss of data.
Temperature rises in excess of the 180° design requirement were recorded;
however, in general, peak temperatures were only of the order of 50
per cent of those desired.
DISCUSSION
The misplacement of air zero resulted in a large angle of incidence
of the thermal radiation on the specimens,
Since the input was not
normal to the surfaces of the panels, the variation of absorptivity of
the paints as a function of paint surface characteristics could cause 4
serious difficulties in attempting to relate temperature rises in the
panels to thermal input,
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