Topics: DTIC Archive, Walsh, John E, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *MONTE CARLO METHOD, *CURVE...

This final report of a series of five evaluates the effects of limited fields of contamination on the dose rate within multistory structures. Comparisons are made between experimentally determined results and those obtained through use of the OCD Guide for Architects and Engineers, the National Shelter Survey Computer Program, and the OCD Manual entitled The Design and Review of Structures for Protection from Fallout Gamma Radiation. The National Shelter Survey Computer Program method for...

Topics: DTIC Archive, BATTER, JOHN F, TECHNICAL OPERATIONS INC BURLINGTON MA, *NUCLEAR EXPLOSIONS,...

This report presents a progress report of SDC's work with Bassett School District and Brigham Young University in planning a new high school for the Bassett District. Discusses the project background, objectives, procedures used, and progress made in this SDC effort. States that in addition to gaining general acquaintance with the nature of the educational program, progress thus far has concentrated on developing detailed operational descriptions, via flow charts of the Coweling Service and the...

Topics: DTIC Archive, Egbert, Robert L, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *EDUCATION, *OPERATIONS...

Programs can be writtenproduce results from field research and, based on these results, various situations which yield theoretically relevant data can be examined in detail. Simu lator programs appear to have two main advan tages: first, they permit utilization of the favorable characteristics of high-speed compu ters, that is, speed, accuracy, control of varia bles, etc.; second, and most important, they permit the researcher to test hypotheses de duced from theory. As experimentation...

Topics: DTIC Archive, Coe, Rodney M, WASHINGTON UNIV ST LOUIS MO, *COMPUTERIZED SIMULATION, *BEHAVIOR,...

SIMRESET (Simulation Reset Routine) will read a Reset Tape on one tape unit. However, SIMRESET will not check for record length errors. SIMRESET is a special purpose modification utilized by the simulation programs.

Topics: DTIC Archive, Kastama, P T, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *COMPUTERIZED SIMULATION,...

Simulated vehicle time message makeup routine will generate vehicle time messages once for ever NN seconds of simulated time. Also these messages will be included on a simulation Bird Buffer - 1604 Transfer Tape, or a Bird Buffer Simulation Tape.

Topics: DTIC Archive, Kastama, P T, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *COMPUTERIZED SIMULATION,...

SDGC (Simulation Data Generation Control Routine) is used by the ordered execution of the data generation subroutines pre-scheduled by SIPSA, to update the system time counters, and to pack outputs from the executed subroutines in the formats requested.

Topics: DTIC Archive, Madrid, G A, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *COMPUTERIZED SIMULATION,...

A SAGE long-range-radar simulation model.

Topics: DTIC Archive, Dugas, R L, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *COMPUTERIZED SIMULATION,...

The programs described make it possible to generate the entire flow field about axisymmetric bodies of revolution in hypersonic flight. These second generation programs can accommodate virtually any geometrical configuration, including those having very blunt noses and after-bodies with expansion and reentrant corners. The gas considered is in chemical equilibrium and includes the effects of gas dissociation and vibrational excitation.

Topics: DTIC Archive, Lieberman, E, GENERAL APPLIED SCIENCE LABS INC HEMPSTEAD NY, *COMPUTERIZED...

Most of the pattern-recognition self-organizing machines can be classified as adjustable-weight threshold-logic machines, statistical-switching machines, or correlation machines. A noisy pattern is a pattern that varies slightly from a model pattern that the machine has been taught. Computer simulations of a typical machine from each of three classes indicate that the noisy pattern recognition capabilities are poor for statistical-switching machines, good for threshold-logic machines, best for...

Topics: DTIC Archive, Foreman, Alling C, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...

A mathematical model of a small solid propellant rocket was programmed for use with a Univac Solid State 90 digital computer by means of Fortran I and Fortran II. In addition to calculating the pressure-time and thrust-time transients, the program computes time-averaged pressure, thrust coefficient, thrust, flow rate, and burning rate, as well as total impulse and specific impulse. The report includes the derivation of equations, the method of solution, the program in Fortran I and Fortran II,...

Topics: DTIC Archive, De Leo, James M., FRANKFORD ARSENAL PHILADELPHIA PA, *COMPUTERIZED SIMULATION, *SOLID...

A new procedure is described for determining that frequency at which the power spectrum of a signal has its absolute peak. The salient feature of the procedure is that it does not explicitly involve the estimation of the power spectrum of the signal itself. Specifically, it is shown that the limit of the iterated normalized autocorrelation of a function f(t) is a pure cosine wave whose frequency corresponds to the location of the maximum energy density in the spectrum of f(t). Furthermore, if...

Topics: DTIC Archive, Kleinrock, L, MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB, *ELECTROMAGNETIC...

The assumptions, logic, and operations of an Information Retrieval System simulation model are described in this report. The model has been programmed in FORTRAN II for the IBM 1620. Two model variations, input and output examples, and some possibilities for improvement and development are given. Data reduction and analysis programs, operating upon the output of the simulation model, are explained and a set of sample outputs for these programs are given. Also included are listings of the latest...

Topics: DTIC Archive, Conger, C R, HRB-SINGER INC STATE COLLEGE PA, *INFORMATION RETRIEVAL, *DATA STORAGE...

The Base Operations-Maintenance Simulator (BOMS), a computer program written in Simscript language, simulates the essential characteristics of an Air Force Base. It represents a SAC B-52/KC-135 organization, but can, with slight modifications represent most other single base operations. Three separate computer programs which make up the BOMS are described. The Data Generator combines a flying schedule with random failures, generated by a Monte Carlo process, with the resources required for...

Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *COMPUTERIZED SIMULATION, *AIRCRAFT MAINTENANCE, MILITARY...

A number of problems that arise in radar and sonar applications can be regarded as parameter estimation problems, in which the desired signal, f(t, alpha), is imbedded in non-white, Gaussian noise. It is desired to estimate the unknown, nonrandom parameter vector, alpha, from observations (continuous or sampled) of the received noisy signal over a finite time interval (0,T). Here f(t,alpha) is a known nonstochastic function, and we shall consider the case when f(t,alpha) is linear in alpha. In...

Topics: DTIC Archive, Goldstein, Gene B, UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES ELECTRONIC SCIENCES...

A simulation of Cincinnati mass media system predicts frequency and reach of flow of messages from known facts taken from census statistics, newspaper and radio audience studies, and a content analysis of the press relevant to attitudes and opinions measured by NORC survey of the effects of a public information campaign on the United Nations made in 1947-48. Three trial scenarios tested plausibility of exposure and consistency with which model synthesized input data before actual scenario of...

Topics: DTIC Archive, Kramer, John F, MASSACHUSETTS INST OF TECH CAMBRIDGE CENTER FOR INTERNATIONAL...

A two-dimensional numerical model of the surface recession dynamics and transient heating of metal plates simultaneously subjected to high intensity laser radiation and aerodynamic frictional forces is developed. The model employs heat and force balance calculations over successive finite time increments on an array of finite elements within the plate's cross-sectional profile lying parallel to the wind vector and bisecting the laser beam spot. A computer program of the model in FORTRAN...

Topics: DTIC Archive, Wigglesworth, Richard G, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...

The feasibility of engine thrust vectoring for lateral control of aircraft in the high angle-of-attack regime was investigated for an airplane with F-11 characteristics. The technique was found to be effective in increasing the angle-of-attack at which departure occurs. The method used an effective dynamic directional stability parameter to account for the thrust effect alteration of the static lateral stability parameters Cnbeta and Cl beta, dyn could not be used to predict departure in the...

Topics: DTIC Archive, Warley, III, Deas H, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...

A problem of an outpatient clinic is described. The problem is then formulated as a queueing problem with some special properties. Using a few results in queueing theory the authors discuss the existence of some parameters of this model. In order to find explicitly the optimal schedule of patients in a clinic a trade-off between patient waiting time and doctor idle time was used. A simulation program was coded and run in order to find the expected waiting time and the total relevant costs of...

Topics: DTIC Archive, Granot, D, TEXAS UNIV AT AUSTIN CENTER FOR CYBERNETIC STUDIES, *MEDICAL SERVICES,...

A generalized conception of an insurgency situation is examined with a systems approach. The model is divided into two sectors, propaganda and military. The emphasis in the propaganda sector is on all actions taken by the insurgent and government sides which have a psychological impact on the population. In the military sector variables associated with combat and troop replacement are examined. A computer simulation, written in DYNAMO II, is provided and several simulation runs are examined....

Topics: DTIC Archive, Combs, Robert M, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *INSURGENCY, COMPUTERIZED...

The thesis investigates the effectiveness of a search plan developed by B. O. Koopman in a submarine versus submarine search situation. Two computer simulation models allow probability of target detection as a function of sonar range to be used as a measure of effectiveness. The Koopman search plan is analyzed and a family of alternate search plans are developed. The choice of a particular alternate search plan is dependent on the parameters of the problem. These parameters are target speed,...

Topics: DTIC Archive, Smith, Thomas J, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *ANTISUBMARINE WARFARE,...

The basic objective of the work reported herein was to provide a braoder technology base to support the development of a medium STOL Transport (MST) airplane. This work was limited to the application of the externally blown flap (EBF) powered lift concept. The technology of EBF STOL aircraft has been investigated through analytical studies, wind tunnel testing, flight simulator testing, and design trade studies. The results obtained include development of methods for the estimation of the...

Topics: DTIC Archive, Roe, Marshall H, ROCKWELL INTERNATIONAL LOS ANGELES CA LOS ANGELES AIRCRAFT DIV,...

The paper describes insights, procedures, and limitations involved in the semi-automatic solution of large-scale computer simulation problems. It uses the experience gained in solving test problems by both a human analyst and an automatic OPTIMIZER program. Particular attention is paid to tasks performed by the man but not the machine and tasks best done by the machine. Guidelines are suggested for incorporating some of the human problem-solving processes as a first step toward interactive...

Topics: DTIC Archive, Mandelbaum, Jay, DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA...

The reporting investigates second order terms of the expansion in the beam/length ratio of the potential of flow past a thin ship. The ship is in a steady translational motion, in water of infinite depth and infinite lateral extent, within its central plane of symmetry. Heave and trim are not taken into account.

Topics: DTIC Archive, Dagan, Gedeon, HYDRONAUTICS INC LAUREL MD, *SHIPS, *OCEAN WAVES, MATHEMATICAL MODELS,...

The Rand version of the Mintz-Arakawa two-level general circulation model of the atmosphere was used to study effects of a 6.5% reduction in incoming solar radiation. Sixty days were simulated. The temperatures of both the atmosphere and the ground began dropping immediately, relative to a control experiment, and dropped fairly steadily, reaching an average decrease of about a degree centigrade at the end of sixty days. (Modified author abstract)

Topics: DTIC Archive, Kahle, Anne B, RAND CORP SANTA MONICA CA, *CLIMATE, *CLIMATE CHANGE, AIR POLLUTION,...

The result of the study is a computer program which simulates the performance of a turbo-alternator power system under varying load conditions. The propellant used in this model is hydrazine and the design output level of the alternator is 3mw. The computer program uses the technique of Newton- Raphson for the simultaneous solution of non-linear equations. The program is set up to allow easy modification to the system equations. The decomposition chamber, turbine stages, and exhaust system are...

Topics: DTIC Archive, Williams, David W, ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL...

Computer simulation is a major evaluation tool used by military decision makers. The report is a comprehensive reference on computer simulation techniques and the basic concepts employed in model building. It is suitable for use by both military planners and operations research analysts. The report includes a general discussion of model building as a decision-making aid and the methodology of a simulation study. Since representing random behavior is a significant part of most models, generation...

Topics: DTIC Archive, McQuay, William K, AIR FORCE AVIONICS LAB WRIGHT-PATTERSON AFB OH, *COMPUTERIZED...

A simplified two-dimensional peripheral jet theory for the equilibrium performance of an air cushion vehicle is investigated. The proposed theory intends to yield a rapid prediction of the actual flow rate and actual power requirements for an air cushion landing system in the hover condition. Nine specific nozzle configurations were tested to determine which resulted in the best power-height performance and whether the theory is able to predict the experimental performance. Three single...

Topics: DTIC Archive, Rogers, John R, AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH, *LANDING AIDS,...

The emplacement and recovery of large deep ocean cable systems containing in-line packages require a knowledge of the dynamic tension and motions of the system under the influence of surface ship motions, subsurface ocean currents and other external loads. A two-dimensional lumped mass model was developed to simulate simply connected cables and in-line packages. Cable tensions and mass point position and velocity are determined by a finite difference method using a predictor - corrector...

Topics: DTIC Archive, Liu, F C, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *COMPUTERIZED SIMULATION,...

Coherent optical adaptive techniques (COAT) can be applied to overcome the deleterious effects of atmospheric turbulence. The report covers the design phase of an experimental program to design, fabricate and evaluate an eighteen-element, self-adaptive, optical phased array. In addition, a computer simulation program developed to aid in system design and performance prediction is also described. Results are presented on preliminary experiments performed with an existing seven-element COAT...

Topics: DTIC Archive, Brunner, P T, HUGHES RESEARCH LABS MALIBU CA, *OPTICAL RADAR, *PHASED ARRAYS,...

A program was conducted to develop analysis techniques that would facilitate the tasks of estimating the impact of predicted component reliability and maintainability (R and M) on an aircraft system in an Army operating environment and evaluating and ranking competing component concepts on the basis of their R and M characteristics. The effort included origination of algorithms that prepare R and M data for Army helicopter operations and maintenance (O and M) simulation, preparation of an O and...

Topics: DTIC Archive, Peake, James E, ARINC RESEARCH CORP ANNAPOLIS MD, *ARMY AIRCRAFT, *HELICOPTERS,...

The report discusses the analysis, design, fabrication, and flight test of an experimental active arm external load stabilization system. The purpose of this effort was to achieve the load damping required for helicopter instrument flight rules operations (load modal damping ratio greater than 0.25) without imposing excessive power requirements on the helicopter subsystems or unsafe conditions on the helicopter. Flight test of the system on the Boeing Model 347 helicopter demonstrated adequate...

Topics: DTIC Archive, Smith, J H, BOEING VERTOL CO PHILADELPHIA PA, *HELICOPTERS, *HELICOPTER HOISTS,...

Since 1969 the services have been required to develop their preferred programs within a fiscal constraint set by the Secretary of Defense. Today's Navy planner chooses force levels, major procurement programs, and ship and aircraft operating policies; constrained by the fixed budget, he achieves increases in one area only by giving up resources in another. It became desirable to have an automated technique that would rapidly and consistently determine the resources needed for the many broad...

Topics: DTIC Archive, Hibbs, Norma, CENTER FOR NAVAL ANALYSES ARLINGTON VA, *LOGISTICS SUPPORT, *MILITARY...

Program WAMP is a Wire Antenna Modeling Program written in FORTRAN IV and applicable to arbitrary antenna and support structures. WAMP models an antenna as a series of interconnected straight wire segments, and solves the electromagnetic boundary value problems by numerically evaluating an electric field integral equation. Antennas may be analyzed in free space, over a perfect ground, a radial ground screen or in the presence of any homogeneous media. Antenna input impedance, current...

Topics: DTIC Archive, Deadrick, Fred J, LAWRENCE LIVERMORE NATIONAL LAB CA, *ANTENNAS, *COMPUTERIZED...

Turbulent flows play a major role in many problems of great practical interest. In the report the authors consider whether the advent of a new generation of computers (Illiac IV, Star, ASC) makes feasible a numerical attack on turbulence by direct integration of the Navier-Stokes equations.

Topics: DTIC Archive, Case, K M, STANFORD RESEARCH INST MENLO PARK CA, *NAVIER STOKES EQUATIONS, *NUMERICAL...

The Scatterable Antipersonnel Mine Test was conducted at Fort Hood, Texas, from 24 September to 5 October 1973. The test was conducted to collect data on the detectability of tripwires. Resulting data tables were used in a computer simulation on tripwire effectiveness. The test provided information on some effective tripwire countermeasures.

Topics: DTIC Archive, Ott, John J, MODERN ARMY SELECTED SYSTEMS TEST EVALUATION AND REVIEW FORT HOOD TX,...

It is true that there are a vast number of techniques that can be used in computer simulation. For validation, each of these requires its own individual method of verification. The compounding of these techniques makes verification of the total simulation often approach the impossible. However, this does not eliminate simulation as a very valuable methodology for performing systems analysis. The report presents an example of a simulation that can be shown to produce accurate results by...

Topics: DTIC Archive, Bramwell, Barry H, EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD, *IMPACT PREDICTION,...

The capability to predict and understand discriminatory features of teleseismic ground motion from earthquakes and nuclear explosions is close at hand. The central question may be stated as follows: Is it possible to develop an earthquake model, whose parameters may be obtained from laboratory tests on rock samples, that is capable of specifying the earthquake's equivalent elastic source. Our results to date indicate that the answer to this question should be affirmative. The approach we have...

Topics: DTIC Archive, Cherry, J Theodore, SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA, *COMPUTERIZED...

Project Diamond Ore was initiated in FY 1971 to determine the effects of different types of stemming, depths of burial, and geologic conditions on the crater size and collateral effects produced by the subsurface detonation of a nuclear cratering device. This determination is being made by using a combination of hydrodynamic code calculations and large-scale chemical explosive charges to model the nuclear explosive energy source. The research program also includes development of a nuclear...

Topics: DTIC Archive, O'Connor, J M, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *COMPUTERIZED...

The report covers the fabrication phase of an experimental program to design, fabricate and evaluate an eighteen-element, self-adaptive, laser phased array. Computer simulation efforts were extended to aid in designing system electronics and in analyzing servo-loop performance for rapid glint selection and adaptive array focusing. The hardware configurations for the beamsplitter- mirror assembly (Phasor matrix), electronics and receiver/transmitter channels are described in this report along...

Topics: DTIC Archive, Hansen, S, HUGHES RESEARCH LABS MALIBU CA, *OPTICAL RADAR, *PHASED ARRAYS,...

The report describes the results of a detailed examination of the radiation and heat budgets of the Rand version of the Mintz-Arakawa two-level atmospheric general circulation model for a January control run. The Mintz- Arakawa model is used extensively in the Rand Climate Dynamics Project, for the Defense Advanced Research Projects Agency, and this study represents part of the continuing effort to verify and improve the model. Considerations of the sort undertaken here are necessary to insure...

Topics: DTIC Archive, Kahle, Anne B, RAND CORP SANTA MONICA CA, *ATMOSPHERIC MOTION, *COMPUTERIZED...

An investigation was undertaken to determine the radial pressure due to the slumping propellant in a gun-launched rocket motor case subject to high axial g loading during launch. Using a Rayleigh-Ritz formulation an approximate solution was obtained.

Topics: DTIC Archive, Salinas, David, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *ROCKET ENGINE CASES, *SOLID...

Previous work on the characteristics of electrically small antennas, antennas in the tip region of a conical projectile, and antennas in or on a conical projectile is briefly reviewed. Using computer modelling new design data for antennas in the tip region of a conical projectile in the frequency range 500 to 1100 MHz is presented. A loop-dipole combination is used to obtain a cardioid type pattern in the forward hemisphere.

Topics: DTIC Archive, Newman, E H, OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB, *ANTENNAS, ANTENNA...

The research discusses a program which aids the user of an automatic programming system (APS) in the debugging of his model of his problem situation. The problem domain considered in the thesis is that of business games (i.e., the management simulation games which are used as a learning tool in the study of management). A language for describing models of these games is presented. The paper then describes the program's methods of simulating and finding bugs in models written in this language....

Topics: DTIC Archive, Mark, William S, MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC, *ARTIFICIAL...

The document describes a fine mesh sea-level pressure analysis scheme for the Mediterranean area with a grid length of approximately 50 n mi. The analysis scheme is an adaptation of the Fields by Information Blending methodology, Sea-Level Pressure version (FIB/SLP) for the northern hemisphere. The effect of orography is included. To test the accuracy of the fine mesh FIB/ SLP, a case study including high resolution satellite pictures from the Defense Meteorological Satellite Program (DMSP)...

Topics: DTIC Archive, Brody, L R, NAVAL ENVIRONMENTAL PREDICTION RESEARCH FACILITY MONTEREY CA,...

A novel reactor, capable of regenerating heat of reaction into the inlet stream, was analyzed for application to NOx reduction (by oxygen and methane) in nitric acid tail gas. The process was evaluated thermodynamically and kinetically over conventional catalysts. The device was simulated mathematically, and isothermal bed characteristics were obtainable. The simulated unit was also demonstrated with bench-scale hardware. Satisfactory performance was achieved on feed streams that could not...

Topics: DTIC Archive, Fleming, Donald K, INSTITUTE OF GAS TECHNOLOGY CHICAGO IL, *NITROGEN OXIDES, HEAT...

A method of total trajectory simulation was established which is based on the governing equations of the various phases of an airdrop or recovery system. In view of these equations, a computer program capable of predicting the performance characteristics of a parachute-load system from the instant of initiation to the moment of landing was established. Calculations were performed for a number of different aerial delivery systems. The calculated results fall well within the broad ranges of...

Topics: DTIC Archive, Heinrich, Helmut G, MINNESOTA UNIV MINNEAPOLIS, *AIR DROP OPERATIONS, *CARGO...

A method of total trajectory simulation was established which is based on the governing equations of the various phases of an airdrop or recovery system. In view of these equations, a computer program capable of predicting the performance characteristics of a parachute-load system from the instant of initiation to the moment of landing was established. Calculations were performed for a number of different aerial delivery systems. The calculated results fall well within the broad ranges of...

Topics: DTIC Archive, Noreen, Robert A, MINNESOTA UNIV MINNEAPOLIS, *AIR DROP OPERATIONS, *CARGO...

A two-dimensional, vertical-plane, computer simulation model describing the dynamics of a wheeled vehicle exiting from the riverine environment is presented. The model includes the effects of soft soil, suspensions, buoyancy, drive train characteristics and the inertial reactions of the unsprung masses. The body is modeled as a composite of rectangular sections; the tires are rigid. The stream bottom and bank surface can be any specified arbitrary geometry; their soil properties are specified...

Topics: DTIC Archive, Jurkat, M P, STEVENS INST OF TECH HOBOKEN NJ DAVIDSON LAB, *AMPHIBIOUS VEHICLES,...

The report details the development of a computer simulation model of the attack helicopter to predict the visual detectivity of the aircraft by a ground observer due to sun reflections from its windows. In addition, the model was exercised to determine probabilities of detection versus angles of incident sunlight and also used to determine sunshade configuration for reducing reflections.

Topics: DTIC Archive, Daumit, Richard H, WESTINGHOUSE DEFENSE AND ELECTRONICS CENTER BALTIMORE MD SYSTEMS...

PHAS20 performs simultaneous multiple regression of a mathematical model for the functional relations among thermodynamic quantities to experimental data for a group of chemically related species. The thermodynamic quantities included are heat capacity, entropy, enthalpy, free energy, equilibrium constant, electrochemical potential, and relative heat content. PHAS20 will fit the model to 70 sets of data containing a total of 1200 observations on 20 species. The program is divided into 4 major...

Topics: DTIC Archive, Haas, Jr, John L, GEOLOGICAL SURVEY RESTON VA, *COMPUTER PROGRAMS, *THERMOCHEMISTRY,...

A computer model for simulating oil spreading and transport has been developed. The model can be used as a useful tool in providing advance information and this may guide decisions for an effective response in control and clean-up once an accidental spill occurs. The spreading motion is simulated according to the physical properties of oil and its characteristics at the air- oil-water interfaces. The transport movement is handled by superimposing the spreading with a drift motion caused by...

Topics: DTIC Archive, Wang, Shen, TETRA TECH INC PASADENA CA, *BAYS, *OIL SPILLS, COMPUTER PROGRAMS,...

The hospital emergency room is a complex system having many interrelated factors contributing to its operation. A computer program has been designed which uses computer graphics and interaction with the user to create a flexible modeling environment for analysis of hospital emergency rooms. In projects involving analysis of public systems, it is especially important that close communication be maintained between the public administrator and the analyst. Tools of the type which concern the...

Topics: DTIC Archive, Weissberg, Richard W, MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC, *INTERACTIVE...

An investigation is made to determine the effect of object shape on the calculation of 26 view vulnerable areas from six orthogonal views by the geometric projection method. Errors in vulnerable area are found for a parallelepiped, a pyramid, a cone, a cylinder, a sphere, a combination of these bodies, and two aircraft shapes - the OV-10 and the A-10. The POO1 Antiaircraft Artillery Simulation Computer Program is used to determine probability of kill variation due to errors in vulnerable areas...

Topics: DTIC Archive, VerStreate, James P, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...

The problem investigated is a method of role determination, using a general purpose of payoff, in a differential game model of aerial combat. Role determination is taken to mean a combatant's selection of a combat objective, based on his relative advantage. The class of game is two person, free time, zero sum and perfect information. The aircraft dynamics are restricted to constant speed in the horizontal plane. The controls for both players are limited turn rates. A fixed weapon range...

Topics: DTIC Archive, Jenkins, P G, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING,...

Results of simulating the addition of a large body of water to the Sahara Desert using the Rand version of the Mintz-Arakawa general circulation model. The simulated lake is a relatively small perturbation to the earth's boundary condition and was chosen to test the hypothesis that an observable and statistically significant change would be produced in the local circulation. The flux and flux divergence of water vapor over North Africa was studied to determine where the water added to the...

Topics: DTIC Archive, Rapp, R R, RAND CORP SANTA MONICA CA, *CLIMATE, *COMPUTERIZED SIMULATION, *SAHARAN...

Results of using the Rand version of the Mintz-Arakawa general circulation model to investigate the initial atmospheric response to a stratospheric dust cloud spread uniformly in a zone between twenty-five degrees north and seventy-five degrees north. The dust particles, construed to be two microns or less in diameter, have a total volume comparable to the ejecta of Krakatoa in 1883. The model was integrated for a simulated period corresponding to January and February, the results being...

Topics: DTIC Archive, Batten, E S, RAND CORP SANTA MONICA CA, *ATMOSPHERIC MOTION, *DUST, ATMOSPHERIC...

Volume II of this report provides a description of a model for predicting emission polarization from paints. The report includes a description of measurements that were made along with graphs of measurement data. Validation of the model shows that model predictions agree with measurement to within the measurement accuracy 70% of the time, thus allowing degree of polarization to be calculated for smooth-surfaced materials in the thermal IR region for any wavelength (from about 7 to 15...

Topics: DTIC Archive, Maxwell, J R, ENVIRONMENTAL RESEARCH INST OF MICHIGANANN ARBOR, *POLARIZATION,...

Multipath compensation techniques for radar applications are being evaluated. Three methods which comprise an extension of the conventional monopulse and a fourth that uses coherent samples taken across the antenna aperture were considered. The performance in the presence of a single specular reflection from the ground is compared by means of Monte Carlo computer simulations. The aperture sampling technique using a minimizing search processing is found to outperform the other methods. (Author)

Topics: DTIC Archive, Kupiec, Israel, MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB, *RADAR TRACKING,...

In the report, bulk filtering refers to simultaneous measurement of the velocity of all objects in a radar beam, and the automatic rejection of those with a velocity less than some specified amount. The Bulk filtering, Acquisition, and Tracking System (BATS) is a signal processor used with the TRADEX radar for experiments in the bulk filtering of ballistic-missile tank fragments. BATS is a part of the Designation and Discrimination Engineering Program which studies ABM radar system functions...

Topics: DTIC Archive, Steinmetz,Carl M, MASSACHUSETTS INST OF TECH LEXINGTON LEXINGTON United States, G...

The main objectives of the research were to develop realistic model for an individual thunderstorm cell, and to investigate the relationships between the large-scale meteorological fields and cumulus cloud ensembles so that the parameterization for cumulus clouds in a global circulation model may be improved on a more scientifically sound basis.

Topics: DTIC Archive, Ogura, Y, ILLINOIS UNIV AT URBANA LAB FOR ATMOSPHERIC RESEARCH, *CLOUD PHYSICS,...

The AIDJEX Modeling Group is developing a predictive model of the dynamics and thermodynamics of the arctic ice cover. To date, an elastic- plastic model of the ice behavior has been developed and operated using field data from AIDJEX pilot programs. A complete model using air stress, water stress, and momentum balance for the ice pack will be developed by the spring of 1975 and checked against the AIDJEX field data taken in a year-long experiment from spring 1975 to spring 1976.

Topics: DTIC Archive, Coon, M D, WASHINGTON UNIV SEATTLE ARCTIC ICE DYNAMICS JOINT EXPERIMENT OFFICE,...

The report discusses the structure of the PMAP module of the TACOS system which is defined by specifying the functional flow, a detailed narrative description of each submodel contained in PMAP, a description of inputs required and outputs generated by PMAP and the subroutine call sequence.

Topics: DTIC Archive, BRADDOCK DUNN AND MCDONALD INC ALBUQUERQUE NM, *ANTIMISSILE DEFENSE SYSTEMS,...

The report presents a description of the TERAIN, PMAP, and SORTEV computer programs of the TACOS system.

Topics: DTIC Archive, BRADDOCK DUNN AND MCDONALD INC ALBUQUERQUE NM, *ANTIMISSILE DEFENSE SYSTEMS,...

An outline of the final report to be issued during August 1974 is provided. Major topics to be covered are Multipath Theory, Experimental Measurements, Computer Simulation and Proposed Plans and Schedule for Phases 2 and 3. Included also is material presented at a recent Design Review which describes technical progress to date.

Topics: DTIC Archive, Greene, Alan H, RAYTHEON CO WAYLAND MA ADVANCED DEVELOPMENT LAB, *MULTIPATH RADAR,...

An extended version of the MAGI (Mathematical Applications Group, Inc.) Combinatorial Geometry technique has been developed which is capable of realistic modeling of trees and bushes. The method has been demonstrated photographically using the SYNTHAVISION process developed by MAGI. Although the basic modeling techniques are those of the standard Combinatorial Geometry method, major extensions have been introduced to reduce the strains on computer memory and computer time that are inherent in a...

Topics: DTIC Archive, Brooks, Joan, MATHEMATICAL APPLICATIONS GROUP INC ELMSFORD NY, *PATTERN RECOGNITION,...

Methods used to determine the Hugoniot equation-of-state were experimentally evaluated for structural concrete having 3/4 in. (prototype) and 1/8 in. (modeled) aggregate sizes. Shock wave simulations were conducted using a two-dimensional shock-wave propagation computer code. Results showed that Hugoniot tests could be conducted on the prototype concrete within acceptable tolerances of experimental error. Results also showed that the Hugoniot equation-of-state of the prototype concrete can be...

Topics: DTIC Archive, Bombich, Anthony A, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS,...

The problem of determining true azimuth from noisy gyrocompass data is presented. First, an adaptive filter is shown to be able to correct the gyrocompass output for environmental effects. Second, it is demonstrated that a low-pass digital filter is able to reduce the measurement noise in the raw data so that it can be properly passed through the adaptive estimator. Computer simulations are presented that indicate that the proposed digital and adaptive filter perform as anticipated.

Topics: DTIC Archive, Janosko, Ronald E, FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY CO,...

Coherent optical adaptive techniques are designed to overcome degradations experienced by optical beams propagating in media with fixed or time-varying distortions. This report presents results from the calibration phase of an experimental eighteen-element, self-adaptive optical phased array. Initial tests on a turbulent, outdoor propagation range are also presented. Computer simulation studies have demonstrated the advantages of a divider-AGC network and have detailed the theoretical system...

Topics: DTIC Archive, Bridges, W B, HUGHES RESEARCH LABS MALIBU CA, *OPTICAL RADAR, *PHASED ARRAYS,...

This report presents the results of a study which develops and validates CH-47C and HLH (Heavy Life Helicopter) R and M to this (Reliability and Maintainability) simulation models. Integral to this study is the development of R and M input data, mission scenarios, and maintenance concepts, representing the CH-47C and HLH in various types of deployment and maintenance support.

Topics: DTIC Archive, Dougherty, III, J J, BOEING VERTOL CO PHILADELPHIA PA, *HELICOPTERS, COMPUTERIZED...

The TRACE Trajectory Analysis and Orbit Determination Program is a general-purpose orbital analysis program. It was written and continues to be developed specifically to assist technical personnel in the analysis and design of satellite orbits and tracking systems. Volume 7 is intended to serve as in input usage guide that defines all input required to perform TRACE functions such as trajectory generation, data/observation generation, orbit determination, and statistical analysis.

Topics: DTIC Archive, Downs, III, Willard D, AEROSPACE CORP EL SEGUNDO CA, *COMPUTER PROGRAMMING, *ORBITS,...

The TRACE Trajectory Analysis and Orbit Determination Program is a general-purpose orbital analysis program. It was written and continues to be developed specifically to assist technical personnel in the analysis and design of satellite orbits and tracking systems. Volume VII is intended to serve as in input usage guide that defines all input required to perform TRACE functions such as trajectory generation, data/observation generation, orbit determination, and statistical analysis. The report...

Topics: DTIC Archive, Downs, III, Willard D, AEROSPACE CORP EL SEGUNDO CA, *COMPUTER PROGRAMMING, *ORBITS,...

A theoretical analysis of the performance of a nearest-prototype classifier (nearest in the sense of Euclidean distance) is presented as an approximate analysis of the performance of the Terrain Contour Matching Navigation System (TERCOM). The analysis is used to predict classifier performance on both artificially generated terrain with Gauss-Markov statistics and on real-world terrain. Over 150 simulation runs were performed over such terrain having added Gauss-Markov noise (independent of the...

Topics: DTIC Archive, Cannon, Jr , Mark W, AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB...

A numerical technique for the simulation of the time dependent, axisymmetric flow of muzzle gases exiting a gun barrel with the attendant flow of ambient air is described. The technique is based on modifications to the OIL Eulerian hydrodynamics computer program to include treatment of arbitrary fixed and moving solid boundaries. This capability permits the inclusion of complex muzzle device geometry and a moving projectile in the Eulerian finite difference mesh.

Topics: DTIC Archive, Traci, R M, SCIENCE APPLICATIONS INC EL SEGUNDO CA, *GUN BARRELS, *GAS FLOW, MUZZLE...

The paper documents six computer programs used by the Rand/ARPA Climate Dynamics Project in simulating the behavior of the global atmosphere to study the complex interactions that produce world climate. The primary research tool, the Mintz-Arakawa model, runs 25 hours computing time for a 60-day simulation, generating 2 billion numbers, of which 15 million are stored in 18 arrays. The MAPGEN, Map Display, and Zonal Profile programs, documented in this report, post-process this output into...

Topics: DTIC Archive, Pass, David S, RAND CORP SANTA MONICA CA, *ATMOSPHERIC MOTION, *CLIMATE, *WEATHER...

The report describes research performed at Cornell University aimed at furthering the understanding of energy transfer and deactivation mechanisms in chemical and molecular lasers as well as the study of new laser systems and new chemical sources for laser systems. The methodology employed consists of laboratory experiments, data analysis including computer modeling, and literature review. Work is reported in several areas: (1) Measurement of the vibrational deactivation of HF(v=1), CO2(001)...

Topics: DTIC Archive, Wolga, George J, CORNELL UNIV ITHACA NY, *CHEMICAL LASERS, ATOMS, CARBON DIOXIDE,...

Four baseline chemistry models which include a detailed reaction mechanism, temperature dependent rate coefficients and radiative properties are presented. The four models include: APOLLO Model for the O/H/OH/H2/O2/H2O system; RELAXATION Model for the O/H/N2/CO/H2O/CO2 system; HYDROCARBON Model for hydrocarbon fuel afterburning; and AMINE Model for amine/substituted amine afterburning. Preliminary calculations are presented on the RELAXATION and AMINE Models while references are listed for a...

Topics: DTIC Archive, Fisher, Edward R, PHYSICAL DYNAMICS INC BERKELEY CA, *COMBUSTION, *INFRARED...

An invariant second-order closure program for compressible shear flows has been developed at ARAP. The program has been applied to study a simulation of the mixing region in a HF chemical laser. Considerable insight into the complex processes occurring in laser cavities has been achieved by these studies. The results show that the assumptions used in the eddy viscosity and the turbulent kinetic energy closure methods are not completely valid for nonequilibrium flows such as in the chemical...

Topics: DTIC Archive, Varma, Ashok K, AERONAUTICAL RESEARCH ASSOCIATES OF PRINCETON INC NJ, *LASER...

The paper presents a plan for FAA development of a method to establish aircraft structural inspection programs on a more rational scientific basis. The structure of a commercial air transport is inspected periodically to detect defects or damage before such deficiencies become hazardous and preferably before extensive repair is required. While the airline safety record is considered good and has been improving, there have still been accidents and incidents in recent years as a result of...

Topics: DTIC Archive, FEDERAL AVIATION ADMINISTRATION WASHINGTON DC FLIGHT STANDARDS SERVICE, *STRUCTURAL...

The effects of systematically manipulating five physical features of random, closed figures were determined. Subjects were asked to select one of four figures presented as being least like the others. The five features investigated were: number of edges, area, radial length variance, edge length variance, and orientation of the major axis. A five-factor, five-level, central-composite response surface design was employed. The resulting regression equation indicated that four features were...

Topics: DTIC Archive, Scanlan, Lawrence A, ILLINOIS UNIV AT URBANA-CHAMPAIGN SAVOYAVIATION RESEARCH LAB,...

The report describes a SAR (Synthetic Aperture Radar) image quality analysis and an image quality model incorporating the conclusions of the image quality analysis into a SAR system digital simulation. The objective of the model and its development program is to provide a fundamental approach for SAR image quality effects for specific SAR systems (parameter combinations performing specific missions). The model thus provides a relatively economical prediction of the information which can be...

Topics: DTIC Archive, Mitchel, Ralph H, ENVIRONMENTAL RESEARCH INST OF MICHIGAN ANN ARBOR, *SYNTHETIC...

A new technique for the correction of atmospheric distortion in a telescope is presented. Most of this distortion arises from a random phase variation in the incoming light across the telescope aperture. This variation limits the resolving power of even large telescopes to about one second of arc. If one defines the 'sharpness' value of the images in a suitable way, this sharpness is maximized only when the phase distortion of the incoming light is zero. The report presents computer simulations...

Topics: DTIC Archive, Muller, Richard A, STANFORD RESEARCH INST MENLO PARK CA, *ASTRONOMICAL INSTRUMENTS,...

Computer simulation is recognized as a valuable systems analysis research tool which enables the detailed examination, evaluation, and manipulation, under stated conditions, of a system without direct action on the system. This technique provides management with quantitative data on system performance and capabilities which can be used to compare proposed methods, concepts, or designs. The planning of a new Navy technical school provided the opportunity to demonstrate the feasibility and value...

Topics: DTIC Archive, Lindahl, William H, TRAINING ANALYSIS AND EVALUATION GROUP (NAVY) ORLANDO FL,...

Many natural and man-made events entail disturbances of the upper atmosphere. Of particular interest is the sequence of deionization phenomena following a nuclear burst. These disturbed regions can be described mathematically with an appropriate computer code designed for a specific function. To describe the deionization of a disturbed region by an appropriate code one must know the source of the disturbance, its duration, the atmospheric species densities, and basic physical and chemical...

Topics: DTIC Archive, GENERAL ELECTRIC CO PHILADELPHIA PA SPACE DIV, *ATMOSPHERE MODELS, *ATMOSPHERIC...

The paper is a review of research done primarily at IIASA. The problem of finding the optimal policy for controlling the spruce budworm -- an insect whose outbreaks from time to time do great damage to the fir forests of New Brunswick, Canada -- represents a rare opportunity to develop and to successfully apply the methodology of optimization. The two interacting populations, the tree and the insect, constitute about the simplest ecosystem of practical importance. A very detailed computer...

Topics: DTIC Archive, Dantzig, George B, STANFORD UNIV CA SYSTEMS OPTIMIZATION LAB, *ECOLOGY, *FORESTS,...

The investigation deals with the dynamic behavior of an airplane encountering aircraft wake turbulence. A digital computer simulation was developed to study the response of an aircraft flying into a trailing vortex wake. The simulation includes the complete six degree of freedom equations of motion, a description of the vortex velocity field, unsteady aerodynamics, and pilot control input. The parameters included the penetration angle, separation distance, aircraft size, and pilot control...

Topics: DTIC Archive, Nelson, Robert C, AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH, *COMMERCIAL...

This report presents results of a study for predicting analytically the dynamic response of magazine headwalls subjected to blast pressure loadings resulting from the explosion of the contents of an adjacent magazine. Primary study objective is to simulate headwalls in the Eskimo I test by a finite element model and to compare results with test data. A nonlinear finite element computer program, INSLAB Code, is used to compute dynamic responses of the headwall. Headwall material behavior is...

Topics: DTIC Archive, Ts'ao, Hsueh-Sheng, AGBABIAN ASSOCIATES EL SEGUNDO CA, *EXPLOSION EFFECTS, *STORAGE,...

This report presents results of investigating the limiting performance attainable with angle modulation (PM and FM) receivers. Statistical estimators which implement the criteria of minimum mean-square-error (MMSE) and maximum a posteriori probability (MAP) are compared with phase-locked loops. Mathematical investigations were carried out for the threshold region. Asymptotic formulae were developed where applicable; the region which could not be effectively treated analytically was analyzed by...

Topics: DTIC Archive, Lawton, John G, CORNELL AERONAUTICAL LAB INC BUFFALO NY, *INFORMATION THEORY,...

For range safety purposes, it is necessary to know the capability of an Atlas missile to change the direction of its velocity vector. The mechanism of this change could be autopilot or control system failure, the result being that the engines are locked in some arbitrary fashion so as to produce a turn. The flight characteristics of an Atlas are such that a condition like this will cause the missile to tumble. The digital simulation discussed in this report is designed to execute the maneuvers...

Topics: DTIC Archive, Willwerth, D E, GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CA, *SURFACE TO SURFACE...

THEATERSPIEL is a two-sided, closed, computer-assisted, theater-level war game with resolution at division level. The THEATERSPIEL game model consists of the cyclical application of flexible sets of rules, procedures, mathematical expressions, empirical formulas, and military judgments to a specific set of data descriptive of the military units, weapons, and equipment being studied. The purpose of the model is to realistically simulate combat situations in specified environments, producing...

Topics: DTIC Archive, RESEARCH ANALYSIS CORP MCLEAN VA, *MILITARY OPERATIONS, *WAR GAMES, *COMBAT...

This project has sought to develop greater understanding of the interaction of explosive blast forces with the structural targets which require protection from the accidental detonation of stored explosives. The relationships which have been developed will be helpful in understanding the risks which are implied in the established explosive quantity-distance criteria and will provide a basis for estimating the potential damage to structures exposed in a blast field which is sufficient to cause...

Topics: DTIC Archive, Custard, George H, FALCON RESEARCH AND DEVELOPMENT CO ENGLEWOOD CO TECHNODYNE DIV,...

Contents: Vulnerability Analysis and Nuclear Hardening of Laser Gyro Circuit Assemblies; Superflash X-Ray Test; Hardened Laser Angular Rate Sensor; Paper 'The Laser Gyro'; and Predicted Effects of X-Radiation Upon the Glow Discharge and Output Signal of a Helium-Neon Laser.

Topics: DTIC Archive, Johnson, R R, HONEYWELL INC MINNEAPOLIS MN GOVERNMENT AND AERONAUTICAL PRODUCTS DIV,...

The SPINNER computer program has been updated to compute aerodynamic coefficients for a wide variety of spin stabilized projectile shapes. Improvements over the original program are substantial as ogive radius, meplat diameter and rotating band diameter are accounted for instead of assuming mean values. Test cases are shown comparing the 1969 SPINNER, the 1973 SPINNER and experimental data. Input instructions and sample program outputs are given along with the 1973 program listing.

Topics: DTIC Archive, Whyte, Robert H, GENERAL ELECTRIC CO BURLINGTON VT ARMAMENT AND ELECTRICAL SYSTEMS...

Three computer programs are described which allow the study of optical properties of two dimensional laser resonators. Two of the programs treat the propagation of an electric field inside an optical resonator (there are two methods for propagating an arbitrary electric field), and couple the propagating fields to a specified laser medium which may be nonuniform, transversely flowing, saturable, and inhomogeneous. The propagation technique includes diffraction effects throughout the laser...

Topics: DTIC Archive, South, Charles, HUGHES RESEARCH LABS MALIBU CA, *COMPUTER PROGRAMS, *LASER BEAMS,...

The goal of this handbook for EMP Electronic Analysis is to provide the circuit designer with techniques and models for use in assessing the degree of hardness of the circuits he is designing. New concepts and interpretation of existing techniques are presented and serve as a basis for defining the future effort required to provide a complete subsystem analysis capability. Topics covered are: (1) A brief overview of the various facets of a susceptibility threshold analysis. (2) A discussion of...

Topics: DTIC Archive, Gage, Byron P, BOEING CO SEATTLE WA, *ELECTROMAGNETIC PULSES, *ELECTRONIC EQUIPMENT,...

A two-stage light gas gun incremental interior ballistic formalism is presented, along with a FORTRAN IV computer program that utilizes the system. Typical input and output data, both plotted and tabular, are included. A standard conventional gun ballistic analytic approach is coupled to a mathematical model of the light gas chamber. Correlations of the mathematical model and computer predictions to experimental device firings are demonstrated.

Topics: DTIC Archive, Heiney, Otto K, AIR FORCE ARMAMENT LAB EGLIN AFB FL, *INTERIOR BALLISTICS, *LIGHT GAS...

The Surface Target Subgroup of the Joint Technical Coordinating Group/Munitions Effectiveness (JTCG/ME) is sponsoring an effort for compilation of target test data and vulnerability methodologies. As part of that effort, this report was prepared to provide a ready reference to analytical and empirical relationships used in target vulnerability and weapon system effectiveness computer simulation routines. The principal intent of this compilation is to provide the target vulnerability analyst...

Topics: DTIC Archive, Day, William R, BOOZ-ALLEN AND HAMILTON INC FORT WALTONBEACH FL, *KILL PROBABILITIES,...

The infrared emission characteristics of six pyrophoric mixtures have been investigated at simulated altitudes up to 60,000 feet and the data compared to kerosene burned under the same conditions. The experiments were performed in large vacuum chambers with the mass flow rate being varied from 1 to 5 grams per second. Pyrophoric mixtures were atomized in a mixing nozzle by nitrogen and released as unchoked exhaust plumes. One series of tests demonstrated that the mixtures: (1) spontaneously...

Topics: DTIC Archive, Ebeoglu, Davut B, AIR FORCE ARMAMENT LAB EGLIN AFB FL, *AERIAL TARGETS, *PLUMES,...

This Phase C final technical report describes the analysis, design, and manufacturing work directed toward the advanced development of a miniature cryogenic turbo refrigerator for cooling infrared sensors, superconducting elements, and electronic devices. An important goal of the program is the demonstration of long life (30,000 hours) and maintenance-free operation, with a 5000-hour endurance test. The refrigeration requirement for the turbo refrigerator is: 1.5 watts at 12 K; and 40.0 watts...

Topics: DTIC Archive, Colyer, D B, GENERAL ELECTRIC CO SCHENECTADY NY MECHANICAL ENGINEERING LAB,...

BMT helps USACE to evaluate challenging wave related issues in navigation and flooding projects to reduce the O and M costs by developing more accurate and cost-effective engineering solutions. BMT is used in optimization of integrated navigation system to improve performance, realignment, safety, reliability and operations of channels; improvement of navigation operations by advanced dredging practices and modifications for ports, harbors and marinas with innovative infrastructures design;...

Topics: DTIC Archive, Demirbilek,Zeki, U.S. Army Engineer Research and Development Center Coastal Inlets...