NUCLEAR EXPLOSION DAMAGE - Storming Media

Quantification of Rock Damage from Small Explosions and its Effect on Shear-Wave Generation: Phase I - Homogeneous Crystalline Rock

30-Sep-2009

11 pages

Authors: Jessie L Bonner; Randolph J Martin; Anastasia Stroujkova; Mark Leidig; Peter Boyd; WESTON GEOPHYSICAL CORP LEXINGTON MA

The full text of this report is available for sale.

Weston Geophysical Corp., New England Research, Inc., and several geotechnical consultants conducted the New England Damage Experiment (NEDE) in central Vermont during July 2008. A series of five explosions using charges having yields of 135 and 270 lbs and three types of explosives were detonated in homogeneous low-fracture density granite. The goal of the experiment was to generate different amounts of rock damage around the source by using explosives with ...

A Neural Network Approach to Modeling the Effects of Barrier Walls on Blast Wave Propagation PREPRINT

MAR 2008

11 pages

Authors: Ian Flood; Bryan T. Bewick; Hani A. Salim; Robert J. Dinan; APPLIED RESEARCH ASSOCIATES INC TYNDALL AFB FL

A practical means of reducing the impact of blast loads on buildings is to introduce a barrier wall between the explosive device and the building. The height and location of the barrier wall are key design variables in terms of effectively reducing the peak positive and negative overpressure and impulse on the building. Until recently, set-ups that included a barrier between the explosive device and the building could only be ...

A ROBUST MINE DETECTION ALGORITHM FOR ACOUSTIC AND RADAR IMAGES,

FEB 2002

Authors: ARNOLD WILLIAMS; RODNEY MEYER; Peter Pachowicz; GEORGE MAKSYMONKO; SCIENCE APPLICATIONS INTERNATIONAL CORPARLINGTON VA

The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.

(U) THIS PAPER ADDRESSES THE NEED FOR MULTIPLE SENSORS IN THE DETECTION OF MINEFIELDS IN A REALTIME MANNER AND AT A PERFORMANCE LEVEL SUITABLE FOR A FORWARD MANEUVER UNIT. THE PAPER BUILDS A CASE FOR OPERATING IN SCENARIOS AND ENVIRONMENTAL CONDITIONS REQUIRING DEPLOYMENT OF COMPLEMENTARY SENSOR SUITES SUCH AS ACOUSTIC AND GROUND PENETRATING RADAR SENSORS. TO AID THE SENSOR FUSION REQUIRED THE PAPER FOCUSES ON THE DEVELOPMENT OF A COMPUTATIONALLY ...

CRAMER-RAO LOWER BOUNDS OF ANGLE-OF-ARRIVAL ESTIMATES FOR ACOUSTIC SENSOR ARRAYS OPERATING IN THE ATMOSPHERIC TURBULENCE,

FEB 2002

Authors: S. L. COLLLIER; D. K. Wilson; ARMY RESEARCH LAB ADELPHI MD

(U) THIS PAPER PROVIDES AN ANALYSIS OF THE CRAMER-RAO LOWER BOUNDS (CRLB) OF ANGLE OF ARRIVAL (AOA) ESTIMATES FOR A PASSIVE SENSOR ARRAY OPERATING IN A TURBULENT MEDIUM. THE ZERO MEAN ASSUMPTION IS AVOIDED SO THAT THE MODEL IS VALID FOR BOTH STRONG AND WEAK SCATTERING. TO CAPTURE SCATTERING BY EDDIES IN BOTH THE ENERGY CONTAINING AND INERTIAL SUBRANGES, A VON KARMAN SPECTRUM IS USED FOR THE TURBULENCE. THE ANALYSIS ...

MULTI-TARGET TRACKING WITH UNATTENDED GROUND SENSORS (UGS) DATA,

FEB 2002

Authors: Stefano Coraluppi; Craig Carthel; MAHENDRA MALLICK; ALPHATECH INC BURLINGTON MA

(U) THIS PAPER PRESENTS A STUDY OF AN EXTENDED KALMAN FILTER/MULTI-HYPOTHESIS TRACKING (EKD/MHT) APPROACH TO TARGET TRACKING WITH DATA FROM SEISMIC AND ACOUSTIC SENSORS. THE STUDY IMPACTS ON TRACKING PERFORMANCE OF THE NUMBER, PLACEMENT, AND DETECTION THRESHOLD ASSOCIATED WITH THESE SENSORS. THE AUTHORS CLAIM THAT THE ALGORITHM USED SCALES WELL AS THE NUMBER OF SENSORS INCREASES, INDICATING ITS SUITABILITY FOR PROCESSING DATA SETS ASSOCIATED WITH LARGE NUMBERS OF UNATTENDED GROUND ...

SEISMIC-ACOUSTIC HYBRID SENSOR & ITS APPLICATIONS,

FEB 2002

Authors: JOHN SLEDGE; TEST WING ( 46TH) EGLIN AFB FL

(U) THIS PAPER ADDRESSES THE NEED FOR INSTRUMENTATION TO GATHER SEISMIC-ACOUSTIC SIGNATURES UNDER UNUSUAL CONDITIONS REQUIRING THE USE OF LOW COST, SIMPLE DESIGN, ROBUST SENSORS. IN SOME INSTANCES THE SENSORS MUST ADAPT AND MOLD TO THE ENVIRONMENTAL MEDIUM TO PROVIDE PROPER COUPLING FOR DATA COLLECTION PURPOSES. THE PAPER EXPLAINS HOW THE IDEA OF A HYBRID SEISMIC-ACOUSTIC SENSOR ORIGINATED AND INITIALLY IMPLEMENTED. TESTING OF FIELD EVENTS ARE REPORTED TO DEMONSTRATE THE ...

SHAPE BIASED LOW POWER SPIN DEPENDENT TUNNELING MAGNETIC FIELD SENSORS,

FEB 2002

Authors: Mark Tondra; Zhenghong Qian; Dexin Wang; Cathy Nordman; JOHN ANDERSON; ALBRECHT JANDER; BOB SINCLAIR; JAMES DAUGHTON; NVE CORP EDEN PRAIRIE MN

(U) THIS PAPER ADDRESSES THE USE OF SPIN DEPENDENT TUNNELING (SDT) DEVICES AS CANDIDATES FOR INCLUSION IN A NUMBER OF UNATTENDED GROUND SENSOR APPLICATIONS. ONE APPROACH TO THEIR USE IS SHAPE BIASING, WHICH MEANS THAT THE PHYSICAL LAYOUT OF THE SDT SENSING ELEMENTS IS SUCH THAT THE MAGNETIZATION OF A SENSING FILE IS CORRECT EVEN WHEN NO BIASING FIELD IS APPLIED. THE AUTHORS DECLARE THAT SENSORS HAVE BEEN FABRICATED USING ...

PROBLEM-SOLVING APPROACH TO DATA FUSION,

FEB 2002

Authors: ALAN STEINBERG; UTAH STATE UNIV LOGAN

(U) THIS PAPER DEFINES AN APPROACH FOR CHARACTERIZING AND SOLVING DATA FUSION PROBLEMS IN A SYSTEM CONTEXT. IT SUGGESTS A GENERAL ONTOLOGY OF PROBLEM SOLVING PROCESSES AND CHARACTERIZES SEVERAL TYPES OF DATA ACQUISITION/FUSION PROBLEMS IN TERMS OF THE ONTOLOGY. THE AUTHOR CLAIMS THAT, BY RELATING DATA ACQUISITION/FUSION PROBLEM SOLUTION TO A GENERAL THEORY OF PROBLEM SOLVING, THE METHODOLOGY FRAMEWORK WILL ASSIST THE INFORMATION SYSTEM PLANNER OR ANALYST TO FIND ANALOGIES ...

ALIAS REDUCTION AND RESOLUTION ENHANCEMENT OF FOCAL PLANE ARRAY SENSORS BY TEMPORALLY ACCUMULATING REGISTERED IMAGERY,

AUG 2001

Authors: J. SCHULER; D. SCRIBNER; M. Kruer; P. WARREN; J. WATERMAN; R. Klein; G. HOWARD; NAVAL RESEARCH LAB WASHINGTON DC

(U) THIS PAPER OUTLINES A GENERALIZED IMAGE RECONSTRUCTION APPROACH THAT IMPROVES THE RESOLUTION OF DIGITAL VIDEO. THE APPROACH DOES NOT DEPEND ON CONTROLLED MICRO DITHERING OF THE CAMERA, NOR REQUIRE THE SET OF EXPOSURES TO MAINTAIN ANY STRICTLY DEFINED TRANSFORMATION. IT ASSUMES SUCH VIDEO IS PHYSICALLY CAPTURED BY A FOCAL PLANE ARRAY, AND LOOSELY REQUIRES SOME RELATIVE MOTION BETWEEN SENSOR AND SUBJECT.

Dismantling Russia's Northern Fleet Nuclear Submarines: Environmental and Proliferation Risks

JUN 2000

87 pages

Authors: Benjamin A. Snell; NAVAL POSTGRADUATE SCHOOL MONTEREY CA

This thesis examines the 1986 Chernobyl accident and its consequences as the basis for an analysis of the possible dimensions of the nuclear catastrophes that could occur during the dismantlement process of Russia's Northern Fleet nuclear submarines. It assesses the potential demographic, ecological, and economic consequences of a nuclear accident. Given the systemic problems at Russian nuclear facilities, the risks of a catastrophic event in the ...

Design, Construct and Test the Hi-Therm Simulator

01 FEB 98

142 pages

Authors: Peter D. Zavitsanos; Michael C. Matthews; L. D. DeDominicis; Howard Semon; Kenneth Lerner; GENERAL SCIENCES INC SOUDERTON PA

Under the previous SBIR programs, GSI investigated the application of highly exothermic intermetallic reactions with the most energetic of these reactions constituting the basis for the Hi-Therm Simulator. The objective of the technical effort pursued under this effort was to develop and demonstrate a thermal source simulator prototype which is capable of uniformly irradiating a 30 foot by 10 foot area with a target plane peak flux of 150 cal/cm^2/sec ...

Crater Volume-Relative Contributions of Flow, Compaction and Elastic Transport

01 DEC 97

57 pages

Authors: John G. Trullo; APPLIED THEORY INC LOS ANGELES CA

As now modeled, near surface (and contained) bursts make room for craters (cavities) mainly by missile ejection, flow of otherwise elastic material, and compaction. An exact solution discovered here for locking solid admits elasticity, plasticity and compaction: For spherical bursts, a cavity radius dependent pressure Pc on the wall then forces nearby material to flow (and compact) until, at radii >rep, falling shock stress precludes shear failure. Flow ends; material ...

Computational Modeling of Underground Tunnels in Intact and Jointed Rock

JAN 97

59 pages

Authors: Yvonne D. Murray; APTEK INC COLORADO SPRINGS CO

Computational models were developed to predict the dynamic response and damage to reinforced tunnels in rock subjected to ground shock from nuclear weapons. This effort is part of the Underground Technology Program. The finite element calculations were performed with the DYNA3D code using a comprehensive smooth-cap model for intact rock and a nonlinear slideline model for rock joints. Calculated tunnel closures, and free-field stress and velocity histories, compare well with ...

Missile's Guidance Head Anti-Nuclear Electromagnetic Pulse Reinforcement

18 NOV 96

13 pages

Authors: Wang Shun-Kui; NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH

In the nuclear weapon family, following A-bombs and H-bombs, some countries developed and produced some other kinds of nuclear weapons, the nuclear electromagnetic pulse bomb is one of them. This kind of nuclear bomb is mainly used to interfere or damage un-reinforced electric and electronic systems. Un reinforced missile guidance heads also could be damaged. So, this paper simply introduces the generation and main characteristics of the nuclear electromagnetic pulse, ...

Design Concepts for Hardened Communications Structures

01 MAR 90

Authors: William J. Flathau; William G. Smith; JAYCOR VICKSBURG MS

An important component of any hardened command and control structure is the antenna system that provides communication with the outside world. Two types of antennae were considered; i.e., the whip type and the directional. The whip type for short-range communication and the directional for use primarily with satellites. In the super high-frequency range, the use of directional antennae having parabolic dishes greater than 8 feet in diameter are common. In ...

Nuclear Winter: A Brief Review and Comments on Some Recent Literature

JAN 88

Authors: Diran Deirmendjian; RAND CORP SANTA MONICA CA

This is a follow-up to a memo on the subject of nuclear winter (NW), a term introduced by the so-called TTAPS authors in their elaboration (Turco, et al., 1983) of an original study by Crutzen and Birks (1982) on the climatic effects to be expected after a major nuclear conflict. A number of related new studies, reviews, comments, and discussions have since appeared in print. The present piece is a ...

Dynamic Test of a Corrugated Steel Keyworker Blast Shelter Misty Picture

NOV 87

93 pages

Authors: Randy L. Holmes; Thomas R. Slawson; Aaron L. Harris; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB

The 18-man blast shelter was tested dynamically on May 14, 1987 in the MISTY PICTURE event at White Sands Missile Range, NM. The main section of the shelter was fabricated from a 9-foot-diameter, 27.5-foot-long section of 10- gage, galvanized, corrugated steel culvert. The shelter included a vertical entryway and air intake and exhaust stacks. The shelter design was found to be conservative during a previous 50-psi validation test, and some ...

Buckling of Blast Loaded Cylinder

OCT 87

52 pages

Authors: Joseph M. Santiago; Michael H. Klaus; Henry L. Wisniewski; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

The transient response of a thin-walled aluminum cylinder subjected to an enveloping shock wave has been simulated with the ADINA finite element program and the results have been compared with counterpart experimental data. The analysis employed the ADINA 16-noded rectangular curved shell. Using linear analysis, the computed strain histories at gage locations were found to correlate reasonably well with test records for the first four milliseconds, but some strain records ...

Equipment Test Methods for Externally Produced Electromagnetic Transients. Issue 2

JUL 87

35 pages

Authors: R. A. Hobbs; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

This memorandum assesses the effect of electromagnetic pulse and lightning strike produced transients to aircraft systems. It details suitable tests for the simulation of these effects and should be used to form the basis of any future aircraft project transient specifications.

Operation CROSSROADS. Gross Damage Report--Test Able.

28 JAN 1987

Authors: JOINT TASK FORCE ONE WASHINGTON DC

OPERATION TUMBLER-SNAPPER. Technical Air Operations,

15 JAN 1987

177 pages

Authors: Paul H. Fackler; AIR FORCE SPECIAL WEAPONS CENTER KIRTLAND AFB NM

USSR Report Military Affairs

22 JUL 1986

Authors: JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA

Yield Effects on the Response of a Buried Blast Shelter

APR 86

280 pages

Authors: Thomas R. Slawson; Sharon B. Garner; Stanley C. Woodson; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB

The Federal Emergency Management Agency has tasked the US Army Engineer Division, Huntsville, to design a Keyworker blast shelter. In conjunction with this project, the US Army Engineer Waterways Experiment Station conducted a series of tests to investigate the effects of variations in weapon yield and the absence of wall stirrups on the structural response of a reinforced concrete box-type shelter. The VSBS computer program was also utilized in these ...

HgCdTe Surface and Defect Study Program

MAR 86

Authors: J. A. Wilson; V. A. Cotton; J. A. Silberman; G. P. Carey; A. K. Wahl; SANTA BARBARA RESEARCH CENTER GOLETA CA

Enhanced doping density within 250A of the passivated interface of Hg0.7Cd0.3Te (PHO-TOX-Si02 and anodic oxide) were measured using capacitance voltage techniques. Detailed doping profiles in channeled implants in Hg0.7Cd0. 3Te show that nuclear damage is the dominant mechanism causing damage induced donor levels with profiles similar to those expected for unoriented implants. Implant atomic profiles are presented for a variety of ions. The role of the weak Hg bond is ...

Wildland Fires and Nuclear Winters. Selected Reconstruction of Historic Large Fires

28 FEB 86

Authors: Stephen J. Pyne; Philip N. Omi; IOWA UNIV IOWA CITY DEPT OF HISTORY

Under the nuclear winter scenario, large wildland fires are expected to contribute to a general smoke plume and are considered potential analogues for the behavior of gigantic palls. As a means of testing the reasonableness of current estimates of a wildland fire contribution, we reconstructed from the historic record two major events; the Tillamook Burn of August 1933 and the 1910 fire complex in the Northern Rocky Mountains. Both events ...

Nuclear Winter Source-Term Studies. Volume 1. Ignition of Silo-Field Vegetation by Nuclear Weapons. Sanitized

01 FEB 86

Authors: Brian W. Bush; Richard D. Small; PACIFIC-SIERRA RESEARCH CORP LOS ANGELES CA

Smoke produced by the ignition and burning of live vegetation by nuclear explosions has been suggested as a major contributor to a possible nuclear winter. This report considers the mechanics of live vegetation ignition by a finite-radius nuclear fireball. For specified plant properties, the amount of fireball radiation absorbed by a plant community is calculated as a function of depth into the stand and range from the fireball. The spectral ...

Effects of Edge Restraint on Slab Behavior

FEB 86

Authors: L. K. Guice; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB

This study was performed in conjunction with a Federal Emergency Management Agency program to plan, design, and construct keyworker blast shelters which would be used in high-risk areas of the country during and after a nuclear attack. The shelters considered in this study were box-type structures in which damage is much more likely to occur in the roof slab than in the walls or floor. In this part of the ...

Electromagnetic Pulse - The Fifth Factor in the Impact of a Nuclear Explosion

16 JAN 86

Authors: Zbigniew Jastak; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Three ionization zones form during high-altitude nuclear explosions. 1) A short-lived ionization zone in the area of the nuclear explosion; 2) Radioactive cloud hovering over the center of the explosion. The cloud consists of ionized volatile products from the explosion and lingers for several hours or even days; 3) A large zone of increased ionization resulting from gamma and x- ray radiation as well as from neutrons. The zone forms ...

Operation DOMINIC, SHOT SWORD FISH. Scientific Director's Summary Report

01 SEP 1985

Authors: W. W. Murray; DAVID TAYLOR MODEL BASIN WASHINGTON DC

OPERATION REDWING. Project 5.3. In-Flight Participation of a B-66 Aircraft,

01 SEP 1985

Authors: R. W. Bachman; DOUGLAS AIRCRAFT CO LONG BEACH CA

OPERATION REDWING. Project 3.1. Effect of Length of Positive Phase of Blast on Drag-Type and Semidrag-Time Industrial Buildings,

01 SEP 1985

Authors: G. K. Sinnamon; J. D. Haltiwanger; N. M. Newmark; ILLINOIS UNIV AT URBANA

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 ...

OPERATION REDWING. Project 5.4. In-Flight Participation of a B-57B,

01 SEP 1985

Authors: H. M. Wells Jr.; D. M. Roha; D. V. Sallis; J. V. Ward; WRIGHT AIR DEVELOPMENT DIV WRIGHT-PATTERSON AFB OH

This project was establihsed to determine the response of the structure of the B-57 aircraft in flight to thermal, gust, and overpressure effects of large-yield nuclear explosions primarily for the purpose of defining the delivery capabilities of the aircraft and secondarily to obtain basic information relative to the thermoelastic response of the aircraft structure. In order to obtain the necessary data, the aircraft was instrumented to measure the overpressure, gust, ...

OPERATION REDWING. Project 8.4. Thermal Effects on Strength of Aircraft Structural Sandwich-Type Panels,

01 SEP 1985

Authors: A. Julian; C. E. Eves; COOK RESEARCH LABS SKOKIE IL

In this test, panels of varied construction materials and facing thickness were subject to transient heat pulses in unloaded and prestressed conditions to determine if any change in structural integrity could be noted. Initial specimens were instrumented for measurement of temperature-time history at the core-to-facing bond and exposed to thermal radiation. Results of comparative post-exposure mechanical tests on field-exposed, aluminum facing samples showed no noteworthy change in strength characteristics as ...

Modeling of Aspects of Large-Area Fires

30 APR 85

Authors: G. F. Carrier; F. E. Fendell; C. T. Hsu; TRW ELECTRONICS AND DEFENSE SECTOR REDONDO BEACH CA

The theoretical part of this study seeks to identify the simplest physically reasonable extension ( of integral-type theory for the buoyant plume over a finite-area quasisteady fire) that permits description of saturation and condensation of water vapor, if they occur. The plume is subdivided axially into three zones: (1) a low-level fire zone in which entrainment appreciably enhanced over Morton-Taylor-Turner levels occurs, but only that water vapor associated with combustion ...

Operation REDWING-Project 6.4. Airborne Antennas and Phototubes for Determination of Nuclear-Weapon Yield.

01 APR 1985

Authors: Alan J. Waters; Roger E. Clapp; ADVANCE INDUSTRIES INC CAMBRIDGE MA

Airborne equipment was designed for determining the location and yield of a nuclear detonation. This equipment determines yield from a measurement of the interval between the time of the burst and the time of the second peak in the thermal radiation intensity curve. Flush-mounted ferrite-core magnetic loop antennas for use in detecting the electromagnetic signal and thus fixing the time of the burst, performed successfully during Operation Redwing. Two kinds ...

Cumulative Thermal Effects in a Multiburst Scenario

MAR 85

Authors: Barbara A. Hall; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

This thesis sought to develop a computer program to model the cumulative effects of nuclear fireball thermal radiation. The scenario studied was the Peacekeeper Dense Pack missile system. The missile field was subjected to walk attack of 2 MT weapons every two seconds. Aiming error of the incoming RV was modeled using a 10-cell CEP area around the designated ground zero, and the probability of damage due to an RV ...

A Guide to Nuclear Weapons Phenomena and Effects Literature.

31 OCT 1984

Authors: K. E. Gould; DOD NUCLEAR INFORMATION AND ANALYSIS CENTER SANTA BARBARA CA

This is an overview guide to the basic and most significant literature on nuclear weapons phenomena and effects. Topics include: Nuclear Weapon Phenomena--Air shock, Ground shock, cratering, and ejecta; Water shock and related phenomena; Initial ionizing radiations; Thermal and optical; EMP environments and interactions; Cloud and fallout; Nuclear Weapon Effects--Aerospace systems; Naval systems; Ground forces field equipment; Structures; EMP and TREE; C3 systems and the atmosphere; Personnel; Civilian sector and ...

OPERATION CASTLE. The Operation Plan Number 1-53. Task Group 7.1,

31 AUG 1984

133 pages

Authors: W. E. Ogle; KAMAN TEMPO SANTA BARBARA CA

Overseas experimentation depends upon progress of construction, reliability of instrumentation and the overcoming of obstacles presented by local conditions. This Operation Plan is intended to be used as a guide for TG 7.1 personnel since it represents a record of agreements arrived at prior to its compilation. Keywords include: NTPR(Nuclear Test Personnel Review), Bikini Atoll, Eniwetok Atoll, and Nuclear explosion testing.

Vehicle Overturning Vulnerability from Air Blast Loads

AUG 1984

11 pages

Authors: R. R. Robinson; H. Napadensky; A. Longinow; IIT RESEARCH INST ANNAPOLIS MD

The overturning response of an armored personnel carrier to air blast loads derived from a nuclear blast environment is presented. The orientation of the vehicle is side-on to the air blast shock front. It is assumed there is no translation at the downwind wheels, i.e., the roll over point. In addition, the vehicle is assumed to behave as a rigid body. That is, the suspension systems is taken as rigid, ...

BRIK, An Interactive, Goal Programming Model for Nuclear Exchange Problems

MAR 1984

261 pages

Authors: R. E. Bunnell; R. A. Takacs; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING

VRIK, unique nuclear exchange model (NEM), is the first NEM to be both totally interactive and to rely entirely upon preemptive goal programming to drive its allocations. Written in Fortran 77 it exists on the VAX 11-798 using the UNIX operating system. Since it includes as internal allocation subroutine, it is completely transportable. BRIK will allocate weapons to targets in order to meet damage expectancy (DE) goals of the user. ...

Algorithm for Calculating Unit Separation Distances,

FEB 1984

Authors: T. M. Geipe; J. V. Michalowicz; HARRY DIAMOND LABS ADELPHI MD

Battlefield units adjacent to a targeted unit must maintain some separation distance to avoid collateral damage. A tabular algorithm for determining such separation distances based on unit damage criteria and weapon delivery errors for several confidence levels is presented. The algorithm depends on a numerical technique for integrating a two-dimensional weapon burst distribution function over some base region and an iterative technique to obtain separation distances given other known parameters. ...

Protection of Radiation Detectors from Fast Neutron Damage.

30 JAN 1984

Authors: S. Kronenberg; DEPARTMENT OF THE ARMY WASHINGTON DC

A circuit for biasing a solid state crystal used as a radiation detector in which the passage of the initial gamma ray pulse from the explosion of a nearby tactical nuclear weapon is utilized to temporarily remove the bias from said crystal for a time sufficient to permit the fast neutron pulse from the same explosion to pass by without permanently damaging the counter crystal. The circuit comprises an RC ...

Dynamic Pressure Impulse for Near-Ideal and Non-Ideal Blast Waves -- Height of Burst Charts. Supplement

31 DEC 1983

Authors: E. J. Bryant; F. J. Allen; KAMAN TEMPO SANTA BARBARA CA

Blast wave data for all past field tests have been reviewed. Some previously unused gage data of sufficiently good quality for determining dynamic pressure impulse have been found and the data reduced. Dynamic pressure impulse has been inferred from tank displacement data using the curve of dynamic pressure impulse versus displacement as a calibration curve (with the tank playing the role of a gage). This allowed extension of dynamic pressure ...

A Program to Develop and Codify Urban Nuclear Weapon Effects

24 JUN 1983

Authors: J. A. Northrop; B. E. Freeman; R. E. Duff; S-CUBED LA JOLLA CA

A program is developed which, if implemented, would assess those effects of a detonation of a terrorist nuclear weapon located in a highly built- up urban area which are unique to the environment, and consider possible techniques for damage limitation. It is assumed that the weapon is of low-yield, that its hiding place can be located, and that there is sufficient time before its detonation for the application of mitigation ...

Study of the Capabilities of Six Advanced Soil Models to Predict Responses to Complex Strain Paths Typical of Explosively-Induced Ground Motion

30 APR 83

Authors: H. E. Read; H. Y. Ko; G. Y. Baladi; P. V. Lade; J. H. Prevost; S-CUBED LA JOLLA CA

The capabilities of six advanced soil models to predict the response of remolded Ralston Valley soil to complex strain paths were investigated in a joint, cooperative effort among several organizations. The complex strain paths were typical of those experienced by soil elements during nearby near-surface explosive ground motion events. The investigation involved both analysis and extensive laboratory testing. Standard laboratory tests were conducted to provide the usual type of data ...

The Mathematical Basis of Exposure Control Calculations. Revision

01 MAR 1983

Authors: S. Mark Clardy; AIR DIV (25TH) (TAC) MCCHORD AFB WA

The current exposure control system is based on empirical data for standard decay which is shown in graphic form in Attachment A. The graphs indicate a linear relationship. Note that this is standard decay with a decay exponent of -1.2. The current exposure control system cannot handle non-standard decay.

Operation DOMINIC II, Shots LITTLE FELLER II, JOHNIE BOY, SMALL BOY, LITTLE FELLER I, 7 July-17 July 1962

31 JAN 1983

Authors: Jean Ponton; Carl Maag; Stephen Rohrer; Robert Shepanek; JRB ASSOCIATES INC MCLEAN VA

This report describes the activities of an estimated 3,000 DOD personnel, both military and civilian, in Operation DOMINIC II, the eighth peacetime series fo nuclear weapons tests, conducted in Nevada from 7 July through 17 July 1962. Activities engaging DOD personnel included the Exercise IVY FLATS troop maneuver, joint DASA and AEC scientific experiments to evaluate the effects of the nuclear devices, and air support.

Applicability of Existing C3 (Command, Control and Communications) Vulnerability and Hardness Analyses to Sentry System Issues

13 JAN 83

Authors: R. C. Lee; TITAN SYSTEMS INC LA JOLLA CA

This report is a compilation of abstracts resulting from a literature search of reports relevant to Sentry Ballistic missile system C3 vulnerability and hardness. Primary sources consulted were the DOD Nuclear Information Analysis Center (DASIAC) and the Defense Technical Information Center (DTIC). Approximately 175 reports were reviewed and abstracted, including several related to computer programs for estimating nuclear effects on electromagnetic propagation. The reports surveyed were ranked in terms of ...

The Neutron Weapon--Peculiarities of the Construction and Destructive Effect

13 DEC 1982

Authors: V. Logachev; NAVAL INTELLIGENCE SUPPORT CENTER WASHINGTON DC TRANSLATION DIV

Viscoplastic Analysis of a Continuous Cylindrical Opening Surrounded by Volcanic Tuff

DEC 1982

Authors: David E. Schmitz; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Nuclear blast effect on a deep underground tunnel was studied for quasi-static and quasi-transient loading conditions. A finite element model was developed and used with a two-dimensional constant strain triangle computer code. Viscoplasticity was introduced through the Malvern flow law in conjunction with the Drucker-Prager constitutive equations. The quasi-static results compared favorably with experimental studies. Quasi-transient results can be compared against future experimental work and field tests. (Author)