s—_.
The Raydist navigational system was used to determine the spatial
;
positions of the B-47 and B-36 to an accuracy of plus or minus 150 feet
on Shots 1, 2 and 6.
shot.
Raydist waa not available at Bikini on the fourth
Data gained from Project 6.2b (B-47B) and 6.2a (B-36B) was to be
extrapolated for use in aircraft of similar configuration, such as the
B-52 °
C.
SAMPLING REQUIREMENTS
Sampling requirements outlined by LASL called for six radio-chemical
samples for each shot, including high altitude samples from above 50,000
feet.
A sample consisted of a predetermined amount of radioactive mate-
rial collected on seven to eight square feet of special filter paper.
_
Twelve F-84's on each shot were expected to bring back half a sample
each.
.
The high altitude samplers were required to bring back one sample
each,
D.
TECHNICAL PHOTOGRAPHY
The third major phase of the Air Task Group's mission was technical
photography.
The purpose of the nuclear cloud Photograpliy Program (Pro-
ject 9.1) was the photogrammetric determination of the various parameters
of nuclear clouds as a function of time and the attempt to establish ap-
proximate yield relationships.
The most important parameter was the
rate of cloud rise and the areas of the cone swept out by the rising material.
Of secondary importance was the dimension and drift of the cloud
as functions of time after the cloud had reached its maximm altitude.
This project required thrée C-54's, an RB-36 and a B-50.
The RB-36
was equipped with gyro-stabilized mounts holding a K-17 aerial camera and
ativ Uf RD
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