ouprise:
BNA
(OIeLygyY
AeseaLell AVSLLALCLS).
URA
FINLLO
NED)
Country of Origin: United States
Country of Publication: United States
Abstract: This Redwing project was designed to furnish supplemental
information on the requirements for protection against retinal burns,
using both rabbits and monkeys as experimental animals. Chorioretinal
burns were produced by various segments of the thermal pulse. This was
accomplished by two series of time-fractionating shutters. The first
group, the early closing shutters, were open at time zero and closed at
increasing intervals of time. The second series, the delayed-opening
shutters, were closed at time zero and subsequently opened for
preselected time increments during the flash. The feasibility of
protection by fixed-density optical filters was explored. Two types of
protective electronic shutters were field tested. Additional objectives
were to: (1) determine whether blink reflexes would prevent
chorioretinal burns; (2) ascertain which portions of the time-intensity
pulse can produce thermal injury to the retina and choroid of the eye;
(3) determine the time required for blink reflex in rabbits and monkeys
exposed to the extreme light intensity of the nuclear detonations; (4)
explore the feasibility of ocular protection by means of fixed-density
optical
filters or combinations
of
filters;
and
(5)
tests,
under field
conditions, protective shutter devices that are in the developmental
state and are designed to close more rapidly than the blink reflex.
Major Descriptors: *NUCLEAR EXPLOSIONS -- THERMAL RADIATION; *REDWING
PROJECT; *RETINA -- RADIATION BURNS; *THERMAL RADIATION -- RADIATION
BURNS
Descriptors: MONKEYS; OPTICAL FILTERS; RABBITS
Broader Terms: ANIMALS; BIOLOGICAL EFFECTS; BIOLOGICAL RADIATION EFFECTS;
BODY; BODY AREAS; BURNS; ELECTROMAGNETIC RADIATION; EXPLOSIONS; EYES;
FACE; FILTERS; HEAD; INJURIES; LOCAL RADIATION EFFECTS; MAMMALS; ORGANS
; PRIMATES; RADIATION EFFECTS; RADIATION INJURIES; RADIATIONS; SENSE
ORGANS; VERTEBRATES
Subject Categories: 450202*
Weaponry -- (-1989)
560400
10/5/493
01877614
Author(s):
--
-- Explosions & Explosives -- Nuclear --
Other Environmental Pollutant Effects
{Item 193 from file: 103)
ERA-12-005140; EDB-87-005247
Sinnamon,
G.K.;
Haltiwanger,
J.D.;
Newmark,
N.M.
Title: Operation Redwing. Project 3.1. Effect of length of positive phase
of blast on drag-type and semidrag-time industrial buildings
Corporate Source:
Illinois Univ., Urbana (USA)
Publication Date: 1 Sep 1985
p 90
Report Number(s):
AD-A-995413/2/XAB
Document Type:
Report
Language: English
Journal Announcement: EDB8611
Availability: NTIS, PC AO5/MF AOQl.
Subfile:
ERA (Energy Research Abstracts).
Country of Origin: United States
Country of Publication: United States
GRA
(NTIS NTS)
Abstract: The primary objective of the project was to obtain information
regarding the effect of the length of the positive phase of blast on
the response of drag and semidrag structures. A total of six
steel-frame buildings were tested during this operation. The structure
of each type nearest ground zero was located such that if the yield of
the weapon was near the lower limit of its predicted range, it would
probably undergo considerable inelastic deformation. Conversely, those
structures farthest from ground zero were located such that if the
yield of the nuclear device was near the upper limit of its predicted
range,
weey would be substantially deformed,
The third
but would not
collapse.
building of each type was located at an intermediate point
between these two extremes.
Instrumentation was provided to obtain
records of the transient structural deflections,
accelerations,
strains,
and
as well as of overpressure and dynamic pressure versus
9003183