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thermal pulse of high~yield nuclear devices;
recording thermal indicators;
(3) to test three types of self-
(4) to determine, for primary data and for
further laboratory study purposes, the effects of long-duration thermal pulse
from high-yield nuclear devices on the strength of various aircraft structural
panels of the sandwich type and the temperature-time histories of these
panels as a result of their exposure to such radiation;
and (5) to measure
the spectral distribution of thermal radiation received ‘y an aircraft in
flight for comparison with that received at corresponding ground stations.
The above objectives were to be attained by (1) instrumenting stations
at varying distances from GZ with calorimeters having varying fields of
view and various broad-band filters, radiometers, modulated bolometers, and
narrow-band recording spectrometers; (2) exposing specimens of cellulosic
materials and fine natural kindling fuels; (3) comparing the data from the
thermal indicators under test with that from a previously proven instrument;
(4) exposing specimens of sandwich-type structural panels with various skin
thicknesses and types and colors of paint while recording their temperature-
time histories by means of thermocouples attached to the panels; and (5) fly~ing a narrow-band recording »pectrometer in a P2V~2 aircraft operating in
the vicinity of nuclear detonations.
In general, Program 8 stations were located adjacent to each other,
wherever possible, in order to obtain a maximum amount of information with
a minimum of duplication and to simplify operational plannine, in addition,
most of the stations were designed io be either mobile or prefabricated, resulting in considerable savings in both cost and field construction time.
All of the projects suffered partial or total ioss of data on the event of
primary interest,
due to displaced air zero. Projects particip. ting only on thisShot, howéver, obtained at least partial data, although
correction and interpretation of the data may prove to be either extremely
difficult or impossible. On the reminder of the shots, good data were obtained by the participating projects, with the following qualifications.
1, Project 8.1 (Basic Thermal Measurements) participated in the shots
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‘An anomaly appeared in times-to-second
masainum from the two stations “for _
however, good data were ob-
tained from this shot as well as from[__
It is suspected that this
anomaly was due to dust obscuring the stationh-on Renit.
Analysis of pointing-
camera data may provide the answer.
2. Project 8.3 (Seli-Recording Thermal Indicators) was scheduled to
participate on the shot{
cations remaining, from[_
The radex situation at the project station loHi made this impossible. a
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3. Project 8.5 (High Resolution Airborne Spectrometry). In addition
to the objectives previously stated, this project attempted measurements of