Order number
page 11
940406-171827-13
-001-001
set 5 with L1OFFICIAEUSE ONLY
Test results from automatic yield indicators
110. PRIMARY TITLE (M)
Cowan, M.; Munro, D.N.; Sander, H.H. |
70. PERSONAL AUTHOR (M)
Sandia Corp., Albuquerque, NM (USA) !
710. CORPORATE SOURCE
750. PUBL ..ANNOUNCEMENT
ERA~-12:005062; EDB-87:005160
601000
371. PUB. DATE (YYMMDD)
34. CLASSIF. LEVEL TEXT
unclassified
Automatic yield indicators which operate on the
950. ABSTRACT
‘
negative-phase duration principle were developed. Yield
estimates were obtained during Hardtack Phase I for five
detonations at distances ranging from 11 to 25 miles.
é
The greatest error in yield was obtained at 22.5 miles
where the ratio of indicated yield to actual yield was
about 2.5. For a lapse condition, it is estimated that
automatic yield indicators will nearly always indicate
within a factor of 2 or 3 of the actual yield within the
range to 0.1 psi peak overpressure (about 30 miles for 1
mt).
Under strong low-level temperature inversions
(rapid increase in temperature with increase in height
above the surface)
at Nevada Test Site, automatic yield
indicators functioned properly on 11 shots on Operation
Hardtack, Phase II. Yields ranged from 0.62 ton to 6.5
kt and distances ranged from 2 to 13 miles. On eight of
801.
KEYWORD (S)
these events, indicated yields were within a factor of 2
of actual yields. Greater errors on the three other
events were caused by interference effects resulting
from the inversion conditions. This and other blast-wave
measurements indicate that factor-of-2 yield estimates
can be obtained by the AYI about 70% of the time under
strong inversion conditions within the range of 0.1 psi.
HARDTACK/; ATOMIC EXPLOSIONS/YIELD; SHOCK WAVES;
ERRORS ; EQUIPMENT; YIELD; AUTOMATION; ERRORS
Item 20
150.
110.
70.
710.
REPORT NUMBER
PRIMARY TITLE (M)
PERSONAL AUTHOR (M)
CORPORATE SOURCE
AD--363644/6/XAB
Detection of fireball light at distances
Oleson, M.H.
Air Force Technical Applications Center,
AFB, FL
(USA)
Patrick
750. PUBL. ANNOUNCEMENT
ERA-11:051890;EDB-86:159957
371. PUB. DATE (YYMMDD)
580829
34. CLASSIF. LEVEL TEXT
unclassified
950. ABSTRACT
Attempts were made to detect at long distances the
light emitted from the Ivy detonations. Two locations,
Johnston Island (3,100 km) and Kwajalein Island (620 km),
were chosen. At Kwajalein, in addition to a ground
installation, equipment was also mounted in a plane
flying above the cloud cover. Measurements were made
with red- and blue-sensitive photocelis. Out of a
possible total of six records, only one positive
5003385
OFFICIAL USE ONLY