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