qn
(Ogle had mentioned in discussion of anotherproject the
large
_
hichmust be
DELETED
planned for,
|
DELETED
__. / The instrumenta-
‘tion must be planned with enough range to go from 100° KT to 4 MT.)
Getting pressures at distances of interest to submarines is
achieved by putting the muges at different depths, since the pressures
increase with depth of water.
The instrument lines will be in a position roughly as shown
in the sketch relative to the weapons barge.
Three lines will be used, to achieve distances
of 6780 or 7500 ft (depending on the weapon
chosen). 10,000 and 16,000 f% from zero.
4
1
I
'
DELETED
—_
ot
Z
Weapons Barge
FETED
ELE
[The moorings
planned will position these to several
t———
hundred feet.
meee
It is thought that a 1-1/2" chain should be sufficient to
go from the moorings to the water. Then a 1/2" wire cable with breaking
strength of 28,000 lbs will be adequate from the cable to the buoys.
chain
A deep sea moor will be put down to'a 2800 1b anchor with a 1-1/2"
leader.
The instrument cans will be fastened to this system.
It 4s planned to use a net layur and a tug, the former to lay
the moors, the latter the cans..
As for the pressures expected, there are practically no data
available on largeescale surface bursts, so they have taken smallescale
data and attempted to scale it up. This has resulted in the predictions
noted below for instrumentation at depths of 75, 260, 600 and 1000 ft,
as shown in the sketch.
the buoys.
All instruments are self-recording on magnetic tape within
In addition, it is planned to telemeter the information from
the Sechannel Wiancko system.at 10,000 ft. They had considered telemotering by a remote-controlled relay station on Eniwetok to a manned.
aircraft which would have a recording station in it. (Photographic
_ recording would be used forthis phase.)
The aircraft also has a comand
i