ay
v=
6
s.
2
3
Velocity ia ft/sec
Tr
+ 336)
ts
1
552100
KE =
1
|: + 250
r
(5.2)
.
iE)|
1000
3
Tiae ip seconds
(5.2)
Kinetic energy in ergs
(5.3)
.
ad is00)
where ris the shell radius in feet.
The expanding shell was expected to saintain its identity until the speed
of sound within the sheil was about chat of the directed shell motion.
Since
_~
t
‘
the radiation loss was high, the late shell temperature was expected to be
about 10% degrees Kelvin.
pex second.
This corresponds to a sound speed of 10,000 feet
At a radius of 7500 feet the shell should lose its inward in-
tegrity, and debris, together with encompassed air, was expected to start
filling the void within the shell.
This turbulent phenomenon was expected
to accomplish dispersion of the debris fragvents throughout a volume having
a radius nearly that which was initially obtaized.
expansion of the beated air was expected.
An eventual hydrodynzic
When these processes were coupleted
the debris was expected to be situated in a sphere having a radius of about
15,000 feet.
The debris cloud vas expected, of course, to become even larger
as the hot gas bobble lofted.
Cloud Rise.
The possible initial debris cloud diameter achieved has
been examined, sicce it is an important parameter in estimating the effectivepess of the samplizg program.
The second parameter, also of importance, is
whether che debris rises with the heated air after the burst.
By approximate
arguzeots it can de shown chat, for a given gas-bubble size and a given ten-
perature ratio berseen the gas of the bupoie and ambient, tie mews cist ihavior can be expected.
Such an argument does not take account of atmosphere
332