vec
oo
Chapter 2
EXPERIMENT DESIGN
eminent a
mA
i NE
The high yields expected, in all shots, required widely scatterAa i ed measurement stations. These stations, as in IVY, covered island
ANG complexes instead of one or possibly two islands as previously utilized during Operations SANDSTONE end GREENHOUSE. An extremely flexible
field leyout and operational organization was mandatory, because of
the widely scattered test areas which were located on both Fniwetok
| add Bikini Atolls.
The flexibility required was further stressed by
“the modifications made during the course of the operation, not only in
expected yivld cf the shots, but also in the particular shot locations.
Many dhpnges in gage ranges and stations were required. As an example,
one sHotoriginally planned for Bikini was shifted to Eniwetok.
The
instrumentation at the new test location was not firmly established
until after thé cancellation of another shot, planned for Eniwetok,
wiior t-2 t-+d ‘sompletely instrumented.
vote
ty
In a matter of a few days all
J,in from the canceled shot area was recovered and transTeg eta with additional new instrumentation to the new loca-
tion and installed fnjsurveyed stations.
All work of station locations,
surveying, and inatadlation for this shot was conducted by project
personnel.
2.1
“yi
QU)
STATION AND INSTR
A total of 71 gag
obtain data from the sf
ATION
ions vere used during the operation to
ots. These stations were scattered over 18
islands and along reefs locatdd
in the two atolls of the proving
grounds; in addition to the instrumentation installed to accomplish the
’ primary objective, many stati
were constructed by project personnel
to obtain the data required bythe secondary objectives.
Table 2.1
indicates the number of stations an ne number and the types of gages
used for each shot.
Ley
2,2 FIELD LAYOUT (BIAST Lines)
|
Predictions of the expected overpres
es versus distance were
required for each shot in order to locate] gage stations in the region
of interest as well as to select the proper
gage ranges. The composite
curve of free-air pressure versus distance’ "17 F7") 2 KT frow Operation
TUMBLER Shots 1 to 4 (see Reference 3) was... 2." pressure predictions.
The use of this curve for predictions wags~believed justified
by the reasonable correlation with Shot Mike.
=~
The gage stations were located by scaling the distances by the
cube root scaling law. The ground distances for the contractor
installed stations, 122-series and 123-series, were b defi |upon the
average expected yields published for the various shofsin the early
14
as