|
samples be collec ted. at
On CASTLE it is desired that the six primaryeltitose of leeri
~
°
true one arfinal
an initial altitude of 42,000 feet
g
Mike
» Becuas
time intervals aentio
true
beon
cannot
range
altitude
this
in
root eeieeonIVY which were collected
the total devris, theresul anane
of
representative
truly
be
- conclusively to
+
te on the IVY “super”
of the critical rad
°se
sing
a
desired to obtain
are lees useful than otherwise. Jt is, therefore,
highont Sy
from as
‘special sample on each of the four high yield CASTLE shots
u joer
representativeness
the
main body of the cloud as possible and to check
:
cox786
be
should
samale
altitude samples by comparison with it. This special
at
ta
flight
a
require
at least 55,000 feet true at about BY) hours and should
in order
55,000 feet of asproximately one-half hour in the semmling area
prove
by this
lower eltitudes
cne or two cloud venetrations. Unless samples from high
altitude sanjle, it
comparison generally to be as representative as the
of the primary
would be desirable on "super shots after CASTLE to collect as many
sarples as possible at altitudes of 55,000 feet or higher. As mentioned in
paregraph 2c, the apparently lower rate of cloud disperasl above 50,000 feet would
make such a capability serve the additional purpose of making it possible to plan
to sample betueen
to 6 hours after shot time with a greater probability of
success when unfavorable wind conditions exist at lower altitudes.
3.
Operational Requirements
@.
Aircreft
1.
Samoling aircraft are required to provide the sixorimary samczlse
in paragraph 2a,
anc the epecialBemple described
The aircraft for the six primary
sandles should have the flight time capebilities in the vicinity of the cloud
steici in paragraph 2c and corressonding altitude capability stated in paragreph
2d. in order to minimize exposure during return to base, these aircraft should
use axial flow engines with turbine and cir intake located not less than ten fest
‘from crew compartment. They should have a speed performsnce of asproximately 0.8
mach end be capable of carrying high performance filter devices. These devices
should be equipped with rainoroof valves and with a sample radiation measuring
instrument to be read in the cockpit. Their location on the aircraft and the design of the filter element should minimize crew radiation and permit safe renoral
of the intenscly radioactive materials collected and the transportation of thes:
{materisis. The design of the filter element should also be integrated with re' ‘quirements bassd on laboratory handling operations. All air antering the cre
compertment for heating, ventileting and pressurisstion purposes should be filtered
to prsvent the entrance of radioactive cloud particles. Los Alamos Scientific
Laboratory also has a generel requirement that the sampling aircraft be capable
of carrying gee sampling equipment. As a result of a cooperative arrangement it
is expected that details regarding this requirement will come from another agency.
it retains, however, the greatest importance to this laboratory.
The special samole aircraft should have the altitude anid flicht
time charecteristice in the cloud vicinity stated in paragraph 2d.
Its speed
and encine tyye may be whatever is revuired. For a mediun speed aircreft, it
is sugrested that the "shoe~box" type filter device developed by Tracerlat, In Ses
for AFl2T+1 be adapted for use.
If e higher speed jet-type aircraft is used
(0.8 mech), it is suggested that a filter device similar to the tyne used on IVY
be developed within the shape of the wing tank used on the aircraft.
U
pe
LANL RC
5
50 6532:
Py
' TOPIED Nee
Dé
The air e:4erans
338