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Defense Technical Information Archive
by Defense Technical Information Center
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Contents: Computer Programs--Multiple Energy Domain Systems, Transfer Function Analysis, Dynamics of Spacecraft Structures, Torsional Systems, Crash Simulation, Highway Vehicle Simulation, Cable Systems, Offshore Structures Analysis, Frames, Nonlinear Transient Response of Solids, Time Dependent Materials, Prediction of Highway Noise, Liquid Propellant Dynamics Analysis, Optimum Design of Dynamic Mechanical Systems, Mechanical and Thermal Shock Analysis, Random Vibration of Structures, Beams,...
Topics: DTIC Archive, Pilkey, Walter, Pilkey, Barbara, VIRGINIA UNIV CHARLOTTESVILLE, *COMPUTER PROGRAMS,...
Contents: Introduction; CGSM Source Listing; Discussion of CGSM Modifications; and Modified CGSM Source Listing.
Topics: DTIC Archive, McDonough,R K, LTV AEROSPACE CORP DALLAS TEX VOUGHT SYSTEMS DIV, *COMPUTER PROGRAMS,...
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Partial Contents: Hydrodynamics for Safety/Maneuvering -- Effects of beam on the hydrodynamic characterisitcs of ship hulls; Bank effects on a ship moving through a short dredged channel, Double-body flow theory, Oscillatory testing for assessment of ship maneuverability, Large amplitude PMM tests and maneuvering predictions for a Mariner class vessel, Ship-controllability of a wide-beam tanker using large scale model, Digital simulation analysis of maneuvering performance, Hybrid simulation of...
Topics: DTIC Archive, Cooper, Ralph D., Doroff, Stanley W., OFFICE OF NAVAL RESEARCH ARLINGTON VA, *SHIPS,...
The physical model and computational procedure of the code is described in detail. The code is validated in tests against a variety of known analytical solutions from the literature and is also compared against actual mountain wave observations. The code will receive as initial input either mathematically idealized or discrete observational data. The form of the obstacle or mountain is arbitrary.
Topics: NASA Technical Reports Server (NTRS), BARRIERS, COMPUTER PROGRAMS, COMPUTERIZED SIMULATION,...
Defense Technical Information Archive
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The Trajectory Reconstruction Program (TRP) system consists of vehicle simulation subprograms designed and written in FORTRAN for CDC 6600/ 7600, IBM 360/370, and UNIVAC 1108/1110 series computers. The overall simulation system has been designed to accommodate extreme variations in vehicle configuration, flight profile, and mission objective and to provide a fast reaction to specific simulations at minimal cost. This simulation system consists of a family of computer subprograms from which a...
Topics: DTIC Archive, Rademacher, M. J., Rearick, W. F., AEROSPACE CORP EL SEGUNDO CA ENGINEERING SCIENCE...
A Numerical Aerodynamic Simulation Facility (NASF) was designed for the simulation of fluid flow around three-dimensional bodies, both in wind tunnel environments and in free space. The application of numerical simulation to this field of endeavor promised to yield economies in aerodynamic and aircraft body designs. A model for a NASF/FMP (Flow Model Processor) ensemble using a possible approach to meeting NASF goals is presented. The computer hardware and software are presented, along with the...
Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC CONFIGURATIONS, AIRCRAFT DESIGN, COMPUTER SYSTEMS...
Defense Technical Information Archive
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For the B-1 Systems Approach to Training (SAT), the primary mechanism for the automated data maintenance is the Sorting Program. The data upon which the Sorting Program operates consists of two interacting components, the Task Analysis Data Base and the Control and Display Catalog. A Thesaurus of Action Verbs functions as a user interface with the Task Analysis Data. This memorandum consists of four computer-generated reports, the first three of which represent the essential information in the...
Topics: DTIC Archive, Ranney, Thomas A, Blair, Anndrea J, CALSPAN CORP BUFFALO NY, *FLIGHT TRAINING, *JOB...
For abstract, see N78-25123.
Topics: NASA Technical Reports Server (NTRS), ATTITUDE CONTROL, COMPUTERIZED SIMULATION, SPACECRAFT...
A generalized ship motion data base applicable to set of five non- aviation ships, i.e., the DD 963, CG 26, FF 1052, FFG 7, and FF1040 was developed. This Non-Aviation Ship Motion data base is stored on the David W. Taylor Naval Ship R and D Center CDC 6700 computer disk packs. The data base consists of an extensive frequency domain data base, a time domain data base selected from the frequency domain results, as well as the computer program to access and manipulate the data as required by...
Topics: DTIC Archive, Baitis, A E, DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD...
Supporting information for the ERS loading study contains computer simulation loading output including printout description, and similar output representing data that include night station contacts.
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, DATA RECORDERS, EARTH RESOURCES...
Defense Technical Information Archive
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This report describes the design and development of a real-time adaptive transform coder that transmits high-quality speech over a 9600 bps channel with bit-error rates of up to 1% without significant loss of speech fidelity. The report presents the results of our FORTRAN simulations on the adaptive transform coder which maximized the quality of the transmitted speech. Important aspects of the ATC algorithm which are optimized were specification and transmission of the side-band information,...
Topics: DTIC Archive, Goldberg,A J, GTE PRODUCTS CORP NEEDHAM HEIGHTS MA COMMUNICATION SYSTEMS DIV,...
This three-part document contains a collection of technical papers presented at the Second NASA/Air Force Symposium on Recent Advances in Multidisciplinary Analysis and Optimization, held September 28-30, 1988 in Hampton, Virginia. The topics covered include: helicopter design, aeroelastic tailoring, control of aeroelastic structures, dynamics and control of flexible structures, structural design, design of large engineering systems, application of artificial intelligence, shape optimization,...
Topics: NASA Technical Reports Server (NTRS), AIRCRAFT DESIGN, COMPUTATIONAL FLUID DYNAMICS, COMPUTER AIDED...
Defense Technical Information Archive
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This report documents the development and incorporation of a stochastic Optical Contrast Seeker Model into the existent Monte Carlo point target terminal homing 6-DOF simulation program. In addition the basic pitch and yaw seeker platform dynamics, parameter target size, seeker breaklock, seeker blind range, transport log, and helicopter induced launch transients are included. Platform imperfections such as mass unbalance and rate gyro drifts were modeled. Each data point generated by the...
Topics: DTIC Archive, O'Hanian, S. L., Lee, A. W., Jr., Lewis, C. L., ARMY MISSILE RESEARCH DEVELOPMENT AND...
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A specialized computer program has been assembled that can calculate the effects of a deformable axisymmetric projectile impacting a visco-elastic medium. An earlier Eulerian code, EVE, was designed to calculate the impact of a rigid projectile with a visco-elastic medium. Another existing code, the Lagrangian CRAM, capable of calculating the deformation of a multi-material projectile due to pressure loading along the projectile surface, was adapted to the calculation of projectile deformation....
Topics: DTIC Archive, Dienes, J K, Halda, E J, Welch, J E, SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA,...
Defense Technical Information Archive
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Volume II of the conference proceedings contains technical papers that pertain to the following broad topic areas: Automation and Human Performance; Individual and Team Performance; Aerial Vehicles and Intelligent Systems; and Military Applications.
Topics: DTIC Archive, Vincenzi, Dennis A, EMBRY-RIDDLE AERONAUTICAL UNIV DAYTONA BEACH FL, *AUTOMATION,...
This report gives a detailed description of aerodynamic (Shock-free/Shocked flow) and acoustic turbulent mixing computer prediction programs developed by the General Electric Company for subsonic and supersonic simple exhaust jets. In addition to giving detailed descriptions of the aeroacoustic formulations and discussions of computer manual instructions for operating the program, extensive theory/data comparisons are given, as well as computer program listings and sample test cases. (Author)
Topics: DTIC Archive, Ferguson,David R, GENERAL ELECTRIC CO CINCINNATI OHIO AIRCRAFT ENGINE GROUP,...
Defense Technical Information Archive
by Defense Technical Information Center
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Aircraft fire safety, despite its importance, is not a subject frequently covered, and the Propulsion and Energetics Panel of AGARD has taken the initiative to focus attention more specifically on this topic which covers a wide diversity of subjects.
Topics: DTIC Archive, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE),...
The Conference was comprised of our sessions. The first session was composed of advanced numerical models and programming methods for computer representation of plasmas. The second session, designated computational sciences, was comprised entirely of invited papers which dealt with numerical techniques in fields other than plasma physics. The third session dealt with numerical methods for the solution of plasma models other than particle simulation. The fourth session included the theory of...
Topics: DTIC Archive, Boris, Jay P, Shanny, Ramy A, NAVAL RESEARCH LAB WASHINGTON DC, *COMPUTERIZED...
Defense Technical Information Archive
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We report on the design and optimisation of a 600 GHz double barrier resonant tunneling diode (RTD) oscillator. Using the simple Esaki equivalent circuit diode model and published DC experimental I-V data, a custom device model was developed and integrated within a commercial harmonic balance (HB) simulator. This technique utilizes a spline interpolation algorithm as part of the device model to determine instantaneous values of device voltage and current when called from within the main HB...
Topics: DTIC Archive, Muscat, John, Sammut, Charles V., MALTA UNIV MSIDA DEPT OF PHYSICS, *DIODES,...
A Technical Team of the NATO RTO has created a manual on aircraft gas turbine simulation, ranging from applications to latest methodology of modelling techniques. Application is from design to operation and maintenance. Twenty two examples of models are reviewed, including educational examples and completed engine models. Present computer platforms in use for such models are reviewed, and an outlook on development is given. Executable models are included. On the theoretical side recent and...
Topics: DTIC Archive, NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE), *AIRCRAFT, *GAS...
The 7th Japan International SAMPE Symposium was held on 13-16 Nov 01 in Tokyo, Japan. 232 papers are included in the proceedings. The conference consisted of 5 satellite workshops and 10 sessions. Satellite workshops included: A. Smart structures and materials/eco-materials, B. Design and Manufacturing of revolutionary light weight aircraft structures, C. Development of low cost composite structures, D. New materials in space vehicles, and E. Composite applications to infrastructure. Sessions...
Topics: DTIC Archive, Ishikawa, T, NIHON UNIV TOKYO, *COMPOSITE MATERIALS, COMPUTERIZED SIMULATION, FIBERS,...
Executable Architectures allow the evaluation of system architectures not only regarding their static, but also their dynamic behavior. However, the systems engineering community do not agree on a common formal specification of executable architectures. To close this gap and identify necessary elements of an executable architecture, a modeling language, and a modeling formalism is topic of ongoing PhD research. In addition, systems are generally defined and applied in an operational context to...
Topics: NASA Technical Reports Server (NTRS), FORMALISM, ARCHITECTURE (COMPUTERS), COMPUTERIZED SIMULATION,...
Defense Technical Information Archive
by Defense Technical Information Center
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The HELP computer code (BRLHELP) which is maintained on the CDC 7600 computers at the Ballistic Research Laboratory, Aberdeen Proving Ground, Maryland and the Ballistic Missile Defense Advanced Technology Center in Huntsville, Alabama, is described. Three shaped charge design applications, a 43 mm conical shaped charge, a hemispherical shaped charge, and an impacting copper wedge, are discussed. Input decks and selected output for each problem are listed, and results are compared with...
Topics: DTIC Archive, Lacetera, joseph, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *COMPUTER...
The symposium dealt with design approaches for military aircraft propulsion systems to provide enhanced operational flexibility, longer range, better fuel efficiency and improved affordability. All classes of gas turbines were addressed in nine sessions as follows: Engine Design and Analysis (Part 1) (5 papers); Mechanical Systems (6 papers); Controls (4 papers); Combustors/Augmentors (4 papers); Compressor Systems (Part I) (5 papers); Compressor Systems (Part II) (3 papers); Turbines (Part I)...
Topics: DTIC Archive, NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE), *AIRCRAFT...
NASA Network Resource and Training Site
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The topics of volume 2 of First CLIPS Conference are associated with following applications: quality control; intelligent data bases and networks; Space Station Freedom; Space Shuttle and satellite; user interface; artificial neural systems and fuzzy logic; parallel and distributed processing; enchancements to CLIPS; aerospace; simulation and defense; advisory systems and tutors; and intelligent control.
Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL INTELLIGENCE, C (PROGRAMMING LANGUAGE),...
A complete system for the modeling, analysis and post-analysis of wing structures utilizing finite elements in simulated flight loads testing has been developed. The preprocessor incorporated the MAGNA element types 3, 4 and 5 (2-D membrane, truss and thin shells) into three predefined wing class models and allows for the conversion of existing wing models to be analyzed by MAGNA. MAGNA is a very powerful and flexible material and geometrical nonlinear analysis program capable of solving a wide...
Topics: DTIC Archive, Bruner,T S, DAYTON UNIV OH RESEARCH INST, *MATHEMATICAL MODELS, *COMPUTERIZED...
Defense Technical Information Archive
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Contents: Appendix N. Naval Engagement Model (NEM) - Fortran Source Program.
Topics: DTIC Archive, LTV AEROSPACE CORP DALLAS TEX VOUGHT SYSTEMS DIV, *COMPUTER PROGRAMS, *COMPUTERIZED...
The Final Proceedings for Materials and Coatings for Extreme Performance: Investigations, Applications, Ecologically Safe Technologies for Their Production and Utilization, 13 September 2004 - 17 September 2004 Principles of designing materials and coatings for operation in hazard conditions; Scientific fundamentals and computer models for the processes of manufacturing materials and coatings for operation in hazard conditions; Advanced technologies for production and joining materials and...
Topics: DTIC Archive, INSTITUTE FOR PROBLEMS IN MECHANICS MOSCOW (USSR), *COMPUTERIZED SIMULATION,...
Defense Technical Information Archive
by Defense Technical Information Center
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An analysis of alternative organizations of the U.S. Army Medium Tank Battalion is conducted using the computer-assisted war game BATTLE (Battle Analyzer and Tactical Trainer for Local Engagements). The purpose of this study is to determine the best organization to conduct an active defense in a non- toxic conventional environment against Soviet breakthrough tactics. The scope of the study is limited to operational aspects of a defensive battle conducted by a tank battalion with not more than...
Topics: DTIC Archive, Schurtz, G. P., NAVAL WAR COLL NEWPORT RI CENTER FOR ADVANCED RESEARCH, *MANAGEMENT...
This appendix contains the coordinated basic data developed and employed in the International Lake Erie Regulation Study. It describes the methods and techniques employed in obtaining the water supply data and development of the basis-of-comparison. Volume 2 also contains tabulations of the final basis-of-comparison data and tabulations of the basic data employed in their derivation. The report also provides a description of the methods and techniques employed in the development of the level...
Topics: DTIC Archive, INTERNATIONAL LAKE ERIE REGULATION STUDY BOARD, *Lake Erie, Elevation,...
Defense Technical Information Archive
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This report describes the computer code and the models developed to form the computer code used to analyze low frequency augmentor instability (rumble). Rumble occurs mainly at high fuel-air ratios and at flight Mach numbers and altitudes where low duct inlet air temperatures and pressures exist. The model was developed in conjunction with and checked by two experimental programs.
Topics: DTIC Archive, Russell,P L, PRATT AND WHITNEY AIRCRAFT GROUP WEST PALM BEACH FL GOVERNMENT PRODUCTS...
NASA Network Resource and Training Site
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Various applications of interactive computer graphics to the following areas of science and engineering were described: design and analysis of structures, configuration geometry, animation, flutter analysis, design and manufacturing, aircraft design and integration, wind tunnel data analysis, architecture and construction, flight simulation, hydrodynamics, curve and surface fitting, gas turbine engine design, analysis, and manufacturing, packaging of printed circuit boards, spacecraft design.
Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC CONFIGURATIONS, CATHODE RAY TUBES, COMPUTER...
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This Final Phase A report covers two major task areas of this contract. One is the establishment and support of the Air Force-ASD/ENA Seafac Facilities in Building 485 at Wright-Patterson Air Force Base. The second task is the establishment and support of an F4E (aircraft 304) flight test program at the Air Force Flight Test Center for evaluating an Austere HUD in mission modes off air-to-air missile, air-to-ground weapons, and and air-to-air gunnery mechanizations.
Topics: DTIC Archive, Patterson,Walter, WESTINGHOUSE DEFENSE AND ELECTRONIC SYSTEMS CENTER BALTIMORE MD,...
Computer program 'PLUMOD' description and users' manual. PLUMOD is an integral part of the exhaust emissions measurement technique for afterburning turbojet engines developed for AFAPL. It is used in conjunction with gas sample surveys made at the engine exhaust plane to compute the true residual emissions released to the atmosphere. PLUMOD is coded in FORTRAN IV language for the Heneywell 6000 computer. (Author)
Topics: DTIC Archive, Colley,W C, GENERAL ELECTRIC CO CINCINNATI OHIO AIRCRAFT ENGINE GROUP, *COMPUTER...
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A preliminary theoretical and experimental analysis was conducted of the constant-area, supersonic-supersonic ejector wherein one supersonic stream is pumped directly by another inside a confining duct. The theoretical analysis, based on a one-dimensional treatment of the constant-area mixing section and inviscid interaction region, is well suited to parametric evaluations and ejector optimization procedures. The experimental investigation of four, small- scale axisymmetric ejector...
Topics: DTIC Archive, Mikkelsen, C. D., Sandberg, M. R., Addy, A. L., ILLINOIS UNIV AT URBANA DEPT OF...
Defense Technical Information Archive
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The history of the Rand/ARPA Dynamics of Climate Project is briefly reviewed, and an overview is given of the project's principal research activities, including significant accomplishments in the areas of atmospheric and oceanic modeling, climatic experimentation and analysis, assembly of climatic data, and programming and use of the Illiac-IV computer. A preliminary assessment is made of future research needs.
Topics: DTIC Archive, Gates, W L, RAND CORP SANTA MONICA CA, *ATMOSPHERE MODELS, *CLIMATE, *OCEAN MODELS,...
A Technical Team of the NATO RTO has created a report on gas turbine simulation, ranging from applications to latest methodology of modeling techniques for gas turbine propulsion applications. The report includes examples of how gas turbine numerical simulations have been utilized for aircraft, marine, and vehicular propulsion applications. The major numerical simulation presented in the report is the gas turbine engine cycle code which provides performance for both steady state and transient...
Topics: DTIC Archive, NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE), *MATHEMATICAL...
The accuracy and dispersion of flechettes are investigated by: (1) An exploratory firing program; (2) A supersonic dynamic testing wind tunnel program; (3) Development of a theory for jump and dispersion for computer computation and analysis; and (4) Precision range firings at this Arsenal. The exploratory firing program reveals the importance of fin and body damage, the blast region, and saboting. The dynamic wind tunnel program yields the static and dynamic aeroballistic stability...
Topics: DTIC Archive, Nicolaides, J. D., Ingram, C. W., Lijewski, L. E., Garsik, M. J., NOTRE DAME UNIV IN,...
Partial Contents: Boundary Layer Fluctuating Pressure Data Obtained in a High Background Noise Environment; Dynamic Measurement of Low-frequency Components of Track-induced Railcar Wheel Accelerations; Development and Application of a Miniature Recorder/Analyzer for Measurement of the Transportation Environment; Shipping Damage Prevention. Coherence Methods Used to Define Transmission Paths in Airborne Antenna Vibration; Component Random Vibration Requirements and Response Spectra; Statistical...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC SHOCK AND VIBRATION INFORMATION CENTER, *DAMPING,...
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by Defense Technical Information Center
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The COMBAT-II model is a highly aggregated, expected value model of combat at the theater level featuring both air and ground interactions in conventional and nuclear environments. Forces interact on three fronts. Multiple artillery systems, missile systems, supply and munitions flows, and aircraft are represented. (Author)
Topics: DTIC Archive, Ayres,B P, BDM CORP MCLEAN VA, *PROGRAMMING MANUALS, *COMPUTERIZED SIMULATION, *WAR...
Program descriptions, flow charts, and program listings for the SIMWEST model generation program, the simulation program, the file maintenance program, and the printer plotter program are given. For Vol 2, see .
Topics: NASA Technical Reports Server (NTRS), CLEAN ENERGY, COMPUTERIZED SIMULATION, ENERGY STORAGE, ENERGY...
Defense Technical Information Archive
by Defense Technical Information Center
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This report contains 357 summaries of research projects which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, contributions to books, published papers, magazine articles, and technical reports. The research was conducted in the areas of Aeronautics and Astronautics, Computer Science, Electrical and Computer Engineering, Mathematics, Mechanical...
Topics: DTIC Archive, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *RESEARCH MANAGEMENT, SIGNAL PROCESSING,...
Defense Technical Information Archive
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This Annex is part of Appendix E - Power. Appendix E contains the economic evaluation of Lake Erie regulation plans in terms of their effects on the generation of hydroelectric power on the connecting channels of the Great Lakes and on the St. Lawrence River. It also contains a description of the methodology that was developed for the purpose of carrying out this evaluation. The purpose of Annex D is to document the computer programs that were used for the determination of power output at each...
Topics: DTIC Archive, INTERNATIONAL LAKE ERIE REGULATION STUDY BOARD, *Lake Erie, *Hydroelectricity, Great...
Defense Technical Information Archive
by Defense Technical Information Center
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A majority of military optical systems operate in the atmoshphere and their performance is often degraded by weather. For several decades researchers have studied in-depth the performance limitations imposed by the atmosphere and devised techniques to get around these problems. The purpose of this symposium was to bring together and update our understanding of atmospheric optical propagation, present a comprehensive review of the state-of-the-art, and provide interaction among the key...
Topics: DTIC Archive, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE),...
NASA Network Resource and Training Site
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A goal of NASA s Fundamental Aeronautics Program is the improvement of aircraft noise prediction. This document provides an assessment, conducted from 2006 to 2009, on the current state of the art for aircraft noise prediction by carefully analyzing the results from prediction tools and from the experimental databases to determine errors and uncertainties and compare results to validate the predictions. The error analysis is included for both the predictions and the experimental data and helps...
Topics: NASA Technical Reports Server (NTRS), AEROACOUSTICS, NOISE PREDICTION (AIRCRAFT), JET AIRCRAFT...
Defense Technical Information Archive
by Defense Technical Information Center
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The purpose of Distributed Processor/Memory Architecture (DP/M) design program was to extend the DP/M avionic system processing concept to a detailed system hardware and software design. The functional design for the DP/ M Processing Element (PE) is summarized, including the processor, memory, input/ output interface, and a dual-level time-division-multiplex bus interface unit. A set of simulation and analysis programs was developed for modeling both the high-level network interaction among...
Topics: DTIC Archive, Consolver, G., Ackley, D., Rickard, M., McAfee, R., Shipchandler, T., TEXAS...
Defense Technical Information Archive
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The best available aeroballistic information on currently fielded and in-development US Army artillery projectiles (105mm and up) for indirect fire has been collected or generated and is discussed in the main report. The aeroballistic data includes: dimensions and inertial properties, zoning, compacted firing tables, dispersion, sensitivity coefficients, aerodynamic coefficients estimates, and a bibliography of lethality and vulnerability. A bibliography and available data on guided projectile...
Topics: DTIC Archive, Hudgins, Henry E., Jr, PICATINNY ARSENAL DOVER NJ, *PROJECTILES, *GUIDED PROJECTILES,...
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Two methods are presented for the analysis of tunnel support loading caused by rock failure. In the first part closed-form solutions are used; in the second, numerical techniques. Emphasis is put upon the statical indeterminacy of the problem and upon the necessity for considering the relative displacements between ground and support. From this follows the need for a realistic calculation of the stiffness of ground and support, as well as the need to consider the sequential development of the...
Topics: DTIC Archive, Daemen, Jaak J, MINNESOTA UNIV MINNEAPOLIS DEPT OF CIVIL AND MINING ENGINEERING,...
Defense Technical Information Archive
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SRI PUFF is a Lagrangian finite difference computer program for calculating one-dimensional stress wave propagation through solid, liquid, gaseous, and porous materials. The calculational procedure is the standard leapfrog method of von Neumann and Richtmyer using artificial viscosity to smooth shock fronts. Planar, cylindrical, and spherical flow are treated. The constitutive relations include the standard Mie-Grueneissen equation of state and elastic, plastic (Mises or Coulomb) work-hardening...
Topics: DTIC Archive, Seaman, L, SRI INTERNATIONAL MENLO PARK CA, *COMPUTER PROGRAMS, *STRESS WAVES,...
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IBHVG2, which stands for Interior Ballistics of High Velocity Guns, version 2, is a lumped-parameter, interior ballistic computer code. The code, which was developed at the BRL, is an updated version of the classic Baer Frankle interior ballistic code. IBHVG2 is used for calculation of interior ballistic trajectories, including gas pressure, projectile displacement and projectile velocity as a function of time. The code treats both regular and deterred propellants. It contains powerful...
Topics: DTIC Archive, Anderson, Ronald D., ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *GUNS,...
Trajectory data are presented for a nominal and two launch window trajectory simulations. These trajectories are designed to insert a manned Apollo spacecraft into a 150/167 km. (81/90 n. mi.) earth orbit inclined at 51.78 degrees for rendezvous with a Soyuz spacecraft, which will be orbiting at approximately 225 km. (121.5 n. mi.). The launch window allocation defined for this launch is 500 pounds of S-IVB stage propellant. The launch window opening trajectory simulation depicts the earliest...
Topics: NASA Technical Reports Server (NTRS), APOLLO SOYUZ TEST PROJECT, SATURN 1B LAUNCH VEHICLES,...
The purpose of the Conference was to bring together world leaders in aviation safety research, aircraft design and manufacturing, fleet operation and aviation maintenance to disseminate information on current practices and advanced technologies that will assure the continued airworthiness of the aging aircraft in the military and commercial fleets. The Conference included reviews of current industry practices, assessments of future technology requirements, and status of aviation safety...
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, AIRCRAFT RELIABILITY, STRUCTURAL ANALYSIS,...
Defense Technical Information Archive
by Defense Technical Information Center
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Modeling human understanding of natural language requires a model of the processes underlying human thought. No two people think exactly alike; different people subscribe to different beliefs and are motivated by different goals in their activities. A theory of subjective understanding has been proposed to account for subjectively-motivated human thinking ranging from ideological belief to human discourse and personality traits. A process-model embodying this theory has been implemented in a...
Topics: DTIC Archive, Carbonell,Jaime Guillermo, YALE UNIV NEW HAVEN CONN DEPT OF COMPUTER SCIENCE,...
Studies were conducted to develop appropriate space shuttle electrical power distribution and control (EPDC) subsystem simulation models and to apply the computer simulations to systems analysis of the EPDC. A previously developed software program (SYSTID) was adapted for this purpose. The following objectives were attained: (1) significant enhancement of the SYSTID time domain simulation software, (2) generation of functionally useful shuttle EPDC element models, and (3) illustrative...
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Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, ELECTRIC EQUIPMENT, ELECTRIC POWER...
NASA Network Resource and Training Site
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This document is a collection of technical reports on research conducted by the participants in the 1996 NASA/ASEE Summer Faculty Fellowship Program at the Kennedy Space Center (KSC). This was the twelfth year that a NASA/ASEE program has been conducted at KSC. The 1996 program was administered by the University of Central Florida in cooperation with KSC. The program was operated under the auspices of the American Society for Engineering Education (ASEE) with sponsorship and funding from the...
Topics: NASA Technical Reports Server (NTRS), EDUCATION, ELECTRICAL ENGINEERING, NASA PROGRAMS, INFORMATION...
Defense Technical Information Archive
by Defense Technical Information Center
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The Women in the Army Study Group was established as an ad hoc group to revalidate the Army's program for women. This report reviews current and planned policy on the utilization of women in the Army. In this regard eleven distinct areas are discussed in separate chapters with conclusions and recommendations provided concerning each.
Topics: DTIC Archive, Fox, Eugene A., Alexander, Franklin D., Kelly, Jacquelin J., Kleb, George R., Lotz,...
This report describes a computer program which calculates the viscous effects on the lift and pressure distributions of arbitrary three-dimensional bodies. The program is a combination of a panel method which computes the potential flow about arbitrary three-dimensional lifting configurations, and a two-dimensional boundary-layer method, which calculates the viscous-effects. These effects are applied to the three-dimensional shape in a 'strip-theory' sense and the resultant viscous lift and...
Topics: DTIC Archive, MACK,Dun-Pok, DOUGLAS AIRCRAFT CO LONG BEACH CALIF, *COMPUTER PROGRAMS, *BOUNDARY...
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This report describes a program designed expressly to be used in conjunction with OPTSA model. Its purpose is to take allocations of Blue and Red general-purpose aircraft to the three missions (CAS, ABA, and INT) for each decision period in the war, and run them through the OPTSA assessment routine to determine and to print out a variety of quantities (e.g., number of aircraft and sorties of various kinds destroyed on each day by various means, values of the various MOEs on all intermediate...
Topics: DTIC Archive, Anderson, Lowell Bruce, Bracken, Jerome, Schwartz, Eleanor L, INSTITUTE FOR DEFENSE...
For abstract, see volume 1 N77-13130.
Topics: NASA Technical Reports Server (NTRS), LANDING GEAR, LANDING LOADS, SCALE MODELS, SPACE SHUTTLE...
This Program User's Guide discusses the Nuclear Thermal Propulsion (NTP) engine system design features and capabilities modeled in the Nuclear Engine System Simulation (NESS): Version 2.0 program (referred to as NESS throughout the remainder of this document), as well as its operation. NESS was upgraded to include many new modeling capabilities not available in the original version delivered to NASA LeRC in Dec. 1991, NESS's new features include the following: (1) an improved input format; (2)...
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Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, NUCLEAR ENGINE FOR ROCKET VEHICLES,...
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This report describes the prototype of a Direct Digital Modulation Converter (DDMC). The codes considered are PCM (pulse code modulation) and delta modulation with sampling frequencies of 16, 19.2, 32, 38.4 for the later. The objective is to convert from one form of digitized voice signal to another without reconstruction of the original analog signal. The results obtained indicate that DDMC's can be designed with characteristics as good as the existing analog means for converting between...
Topics: DTIC Archive, Stephenne, Hubert, Villeret, Michel, SHERBROOKE UNIV (QUEBEC), *CONVERTERS, *DELTA...
In order to examine the state of technology of all areas of magnetic suspension and to review recent developments in sensors, controls, superconducting magnet technology, and design/implementation practices, the Fifth International Symposium on Magnetic Suspension Technology was held at the Radisson Hotel Santa Barbara, Santa Barbara, California, on December 1-3, 1999. The symposium included 18 sessions in which a total of 53 papers were presented. The technical sessions covered the areas of...
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, MAGNETIC SUSPENSION, SUPERCONDUCTING MAGNETS,...
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This document constitutes the final technical report on the 'Modification to Math Model for SIAF Small Independent Action Forces program. The principal product of this program was a revision to a computerized simulation model of a SIAF operating in both reconnaissances and combat modes. The SIAF simulation model is provided as computer software installed on CDC 6500 computer at Fort Leavenworth, Kansas, and additions to and replacements for a six-volume User's Manual as follows: Volume I-Model...
Topics: DTIC Archive, TRW SYSTEMS GROUP REDONDO BEACH CA, *COMPUTERIZED SIMULATION, *WAR GAMES, *GUERRILLA...
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The goals of the project have been the development of forecasting techniques to the point where the impact of alternative U.S. foreign policies toward specific countries can be assessed in alternative strategic environments. As a way of achieving this objective, the Project is developing computer simulations of several Middle-East oil producing nations. In doing this, assumptions about relations between U.S. policies and policy actions and country and region specific indicators of stability are...
Topics: DTIC Archive, Thorson, Stuart J, OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS, *FORECASTING,...
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This report describes a parametric engineering system definition model developed for use in planning tank-automotive research and development. The model can be used for (1) estimating the performance of a conceptual armored combat vehicle consisting of a specified set of components or (2) 'sizing' a vehicle to meet a set of performance specifications. Key elements of the model include a structure for a data base to contain descriptions of components which might be incorporated into future...
Topics: DTIC Archive, Spaulding, S., VECTOR RESEARCH INC ANN ARBOR MI, *COMPUTER PROGRAMS, *MATHEMATICAL...
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Instructions in the organization and use of the computer programs which implement the Initial NATO Reference Mobility Model (INRMM) are presented. A brief description of the mathematical equations and computing algorithms which predict the speed of a vehicle over a variety of terrain, the input data required, and the outputs generated is included. Some aid to the interpretation of various output variables is given.
Topics: DTIC Archive, Jurkat, M. Peter, STEVENS INST OF TECH HOBOKEN NJ DAVIDSON LAB, *MOBILITY, *LAND...
The volume provides the additional bibliographic coverage from March 1974 to March 1975. RAC assigned document numbers for this publication are 10417 through 11044.
Topics: DTIC Archive, ITT RESEARCH INST CHICAGO IL RELIABILITY ANALYSIS CENTER, *BIBLIOGRAPHIES,...
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The FAA has developed a family of computer models for the analyses of the airside of an airport. These models can be used to determine the capacity and delay on airports, and to study the fine-grain sensitivity of capacity and delay to variations of airport specific conditions. This model users manual presents detailed instructions for using the FAA capacity and delay models. The manual is written primarily for airport planners and engineers who have a general familiarity with computer...
Topics: DTIC Archive, Ball,Carl T, FEDERAL AVIATION ADMINISTRATION WASHINGTON D C SYSTEMS RESEARCH AND...
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This is an interdisciplinary conference involved with the synergistic integration of mechanical engineering with electronics and intelligent computer control for design and manufacture of products and processes. Topics include: (1) mechatronics design, (2) distributed systems, (3) vision and sensors, (4) robots and mobile machines, (5) vibration and control, (6) computational intelligence in mechatronics, (7) embedded real time systems, (8) micro-mechatronics, (9) motion control, (10)...
Topics: DTIC Archive, Kaynak, Okyay, BOGAZICI UNIV ISTANBUL (TURKEY) FACULTY OF ENGINEERING, *ROBOTICS,...
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Contents: Glossary; Software Modules used in the Radar Simulation Model; Variables used in the Radar Simulation Model; Table of Time Sharing Files; Tschebyscheff Filter Design Data; Digital Filter Design; Computer Program used in Reading Radar Cross Section Tapes; Computer Program for Imaging Coherent Short Pulse Target Data; TSAR Simulation Run Catalogues; Antenna Lobe Scanner Output Data; Interactive Radar Simulator Design Study; Radar Cross Section Analytic Model Descriptions; and Hewlett...
Topics: DTIC Archive, Hancock,Robert J, Cleveland, Fred H, GENERAL DYNAMICS FORT WORTH TEX CONVAIR...
The final report outlines the study results and design for an Educational Technology Assessment Model. The primary report feature is an eight task procedure in Section III intended to guide the assessor of a training innovation through the required data collection and analysis steps leading to a decision to accept, reject, or continue to study the innovation. Scenarios in Section V describe the step by step application of the ETAM procedures to the assessment of an innovation. A summary of...
Topics: DTIC Archive, Miller, Robert B, Duffy, Larry R, TRAINING ANALYSIS AND EVALUATION GROUP (NAVY)...
This document provides a comprehensive description of program KRASH, as modified. Included in this User's Manual are the Program KRASH (Description and Theory), Program Controls, and Listing. The User's Manual is part one of a three-volume document. The second volume describes modeling technique applicable to program KRASH to assist in the development of improved structural crashworthiness designs, as well as the detailed input requirements and output capabilities of KRASH. Volume III contains...
Topics: DTIC Archive, Gamon,Max A, LOCKHEED-CALIFORNIA CO BURBANK, *STRUCTURAL ANALYSIS, *AVIATION SAFETY,...
The volume provides additional bibliographic coverage from March 1975 through March 1976. RAC-assigned document numbers for this volume are 11045 through 11745.
Topics: DTIC Archive, ITT RESEARCH INST CHICAGO IL RELIABILITY ANALYSIS CENTER, *BIBLIOGRAPHIES,...
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The purpose of the CH-54 Operational Statistics program was to validate the CH-54 helicopter in the Army's tactical aircraft reliability and maintainability model and to analyze the results obtained from the factorially designed arrangement of simulation runs on sensitivity, credibility, and sufficiency. Changes in utilization, failure rate, NORS waiting time, TBO concepts, major inspection durations, and repair/replacement time distributions were studied. Effects on operational availability,...
Topics: DTIC Archive, Caseria, Robert W, UNITED TECHNOLOGIES CORP STRATFORD CT SIKORSKY AIRCRAFT DIV,...
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This paper provides an overview of the Undersea Weapon Design and Optimization (UWDO) program sponsored by the United States Navy's Office of Naval Research (ONR). Progress, status, and future research directions of the UWDO program are presented. The objective of the UWDO program is to develop computational tools and simulation-based methodology to optimize undersea weaponry system designs with respect to cost and performance. The design toots and environment developed in this program continue...
Topics: DTIC Archive, Ng, Kam W., OFFICE OF NAVAL RESEARCH ARLINGTON VA, *SYSTEMS ENGINEERING, *UNDERWATER...
Selected papers from MODSIM World 2011 Conference & Expo are contained in this NASA Conference Publication (CP). MODSIM World 2011 was held in Virginia Beach, Virginia, October 11-14, 2011. The theme of the 2011 conference & expo was "Overcoming Critical Global Challenges with Modeling & Simulation". The conference program consisted of five technical tracks - Defense, Homeland Security & First Responders; Education; Health & Medicine; The Human Dimension; and...
Topics: NASA Technical Reports Server (NTRS), COGNITION, GAME THEORY, COMPUTERIZED SIMULATION, DECISION...
In order to assess the state of the art in transonic flow disciplines and to glimpse at future directions, NASA-Langley held a Transonic Symposium. Emphasis was placed on steady, three dimensional external, transonic flow and its simulation, both numerically and experimentally. The symposium included technical sessions on wind tunnel and flight experiments; computational fluid dynamic applications; inviscid methods and grid generation; viscous methods and boundary layer stability; and wind...
Topics: NASA Technical Reports Server (NTRS), COMPUTATIONAL FLUID DYNAMICS, COMPUTERIZED SIMULATION, GRID...
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This bibliography lists 967 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1987 and June 30, 1987. Its purpose is to provide helpful information to the researcher, manager, and designer in technology development and mission design according to system, interactive analysis and design, structural and thermal analysis and design, structural concepts and control systems, electronics, advanced materials, assembly...
Topics: NASA Technical Reports Server (NTRS), MISSION PLANNING, SPACE STATION POWER SUPPLIES, SPACE STATION...
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Contents: Session I-Invited papers on the fundamentals of EM noise and EMC; Session II-Contributed papers on EM noise; Session III-EMC specifications; Session IV-EMC and RFI design and management techniques; Session V-Computer modelling, simulation and analysis applied to EMC; Session VI- Installation and interface problesm; Session VII-EMC testing, techniques and equipment.
Topics: DTIC Archive, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE),...
Papers that cover the following topics are presented: subgrid scale modeling; turbulence modeling; turbulence structure, transport, and control; small scales mixing; turbulent reacting flows; and turbulence theory.
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, CONFERENCES, DATA BASES, NASA...
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The objective of the overall research program is to develop an evaluation procedure applicable to existing NSS-type structures and private homes. Past efforts have been concerned with examining exterior walls; window glass; steel frame connections; applications to actual buildings; reinforced concrete floor systems, including restrained slabs; wood-joist floors; and the dynamic inelastic analysis of a steel frame building. Since this is the final report in this effort, a summary of the...
Topics: DTIC Archive, Wiehle, C. K., STANFORD RESEARCH INST MENLO PARK CA FACILITIES AND HOUSING RESEARCH...
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An Accident Recovery Model (ARM) for recreational boating accidents is presented. Its development and application are described. The model is used to estimate the benefits of regulatory programs in four recovery problem areas. Methods and problems in benefit estimation are described and recommendations for further development of ARM are offered. An investigation of the causes of sudden and unexplained drownings is reported, including a review of the biomedical literature and an analysis of...
Topics: DTIC Archive, Doll,T, Stiehl,C, Pfauth,M, MacNeill,R, WYLE LABS HUNTSVILLE ALA, *COMPUTERIZED...
Volume 2, of a 3 volume technical memoranda contains a detailed documentation of the GLAS fourth order general circulation model. Volume 2 contains the CYBER 205 scalar and vector codes of the model, list of variables, and cross references. A variable name dictionary for the scalar code, and code listings are outlined.
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC CIRCULATION, NUMERICAL WEATHER FORECASTING,...
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This manual provides a detailed description of the cost input required to operate the RMS Cost model; the descriptions, flow-charts and source listings for the operation and maintenance cost computation subroutines; a complete source listing of the RMS Cost program with annotations for RMS code modifications; and a sample of the cost-information tables.
Topics: DTIC Archive, Kirchmer, James E., TECHNOLOGY INC DAYTON OH INSTRUMENTS AND CONTROLS DIV,...
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The Time Warp Operating System (TWOS) is an implementation of the Time Warp synchronization method proposed by David Jefferson. In addition, it serves as an actual platform for running discrete event simulations. The code comprising TWOS can be divided into several different sections. TWOS typically relies on an existing operating system to furnish some very basic services. This existing operating system is referred to as the Base OS. The existing operating system varies depending on the...
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, MULTIPROCESSING (COMPUTERS),...
Partial contents: The Information in Contingency Tables; Multi- Dimensional, Non-Gaussian, Random Processes with Specified Covariance and Probability Density Functions; Design of Experiments for Evaluation of Materiel Performance in Worldwide Environments; Short Pulse Testing of EEDs and the Bruceton Problem; Target Visibility and Decision Optimization; Optimizing a Production Line for Cost and Quantity; An Application of Weibull-Gnedenko Distribution Function for Generalizing Conditional Kill...
Topics: DTIC Archive, ARMY RESEARCH LAB RESEARCH TRIANGLE PARK NC ARMY RESEARCH OFFICE, *APPLIED...
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A detailed investigation has been conducted on the structural dynamic response of solid rocket motors. The study was particularly concerned with estimating the structural response to unstable acoustic combustion oscillations that often occur in solid motors during motor firing time. Detailed finite element analyses were performed on the Poseidon C-3 second stage motor and on the Minuteman III third stage motor using a NASTRAN computer program. In addition, the response of an inert second stage...
Topics: DTIC Archive, Jensen, F. R., HERCULES INC WILMINGTON DE SYSTEMS GROUP, *COMPUTER PROGRAMS,...
A timeline containing altitude, control surface deflection rates and angles, hinge moment loads, thrust vector control gimbal rates, and main throttle settings is used to derive the model. The timeline is constructed from the output of one or more trajectory simulation programs.
Topics: NASA Technical Reports Server (NTRS), AUXILIARY POWER SOURCES, COMPUTER PROGRAMS, HYDRAULIC...
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Contents: Shock testing and analysis; Fluid structure topics; Acoustic and vibration testing; Imapct and blast; Measurement and criteria development; Isolation and damping; Dynamic analysis; Minuteman dynamics; Modal test and analysis; Shipboard problems and blast effects.
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON D C SHOCK AND VIBRATION INFORMATION CENTER, *VIBRATION,...
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This report presents the relations necessary to define the motion of a target in the gravitational field of the earth. In order to express this target motion in the frame of a radar, an appropriate set of coordinate systems (and transformations) is introduced. Target tracking in the form of a Maximum Likelihood Estimator is discussed. The problem of interceptor miss distance is treated from the standpoint of the uncertainty volumes associated with estimated target state vectors.
Topics: DTIC Archive, Diamond, Bliss L., Austin, Michael E., MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN...
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The description of a flexible computer program that simulates the airlift of army units from supply bases to a threatened area. The program can be used on several types of large-scale computer. Inputs tell the computer where men and materiel are, where they must go, and what units and equipment have priority. Also specified are the number and the capabilities of each type of transport aircraft. The size and weight of each type of equipment (actual Army values) are already incorporated. The...
Topics: DTIC Archive, Hayes,James H, Cutler,Leola, RAND CORP SANTA MONICA CALIF, *COMPUTER PROGRAMS,...
A linearized mathematical model is developed which simulates the dynamic response of the Navy F/A-18 for the study of flight control reconfiguration. The aircraft is modeled as a multi-input multi-output, sampled data, closed system, which couples the dynamics of the flight control system to the aircraft linearized small perturbation equations. The discrete time, state variable equations for the system are then formulated. A computer program is developed which will compose the model matricies...
Topics: DTIC Archive, Rojek, Fredric W, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *FLIGHT CONTROL SYSTEMS,...
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Program listings.
Topics: DTIC Archive, COMPUTER SCIENCES CORP HUNTINGDON VALLEY PA, *COMPUTERIZED SIMULATION, *ANTISUBMARINE...
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This catalog contains a brief description of 139 military simulations and models which are in general use throughout the Department of Defense. The models and simulations are categorized as to application. All models are listed alphabetically and are indexed by short title, long title, proponent, and developer. The description for each model includes: proponent, developer, purpose, general description, input, output, limitations, hardware, software, time requirements, security classification,...
Topics: DTIC Archive, Berg,Donald J, STUDIES ANALYSIS AND GAMING AGENCY WASHINGTON D C, *MILITARY...
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Coding schemes for the correction of random errors or burst errors for fixed block length digital data words are presented in this report. The word format considered is a 48-bit word with six 8-bit subwords, and the codes developed are for the correction of errors in two subwords with a third subword for the parity bits. Several codes are considered and analyzed for their error correcting capability. Also, computer simulations were carried out on several of these codes, and a burst length...
Topics: DTIC Archive, Komo, John J, MISSOURI UNIV-COLUMBIA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING,...
This report presents a description of a computer program to combine and modify stress history simulations generated by a companion computer program described in Volume I. Input random stress history data sets are combined and modified to create stress spectra variations. Each variation is characterized by its mission mix; a mission mix consists of a particular order of mission types (Air-to-Air, Air-to-Ground, and Instrumentation and Navigation). An example problem is included which...
Topics: DTIC Archive, Young, H. T., MCDONNELL AIRCRAFT CO ST LOUIS MO, *COMPUTERIZED SIMULATION, *STRESS...
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The second volume of this report is principally developed for the user, as an aid in the use and modification of the SINGER code. The objective is to document the experience gained through the study of problem solutions and code details. In addition, this volume includes the description of new subroutines developed and a listing of the current version of the code. (Author)
Topics: DTIC Archive, Somers,A E, VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF CIVIL...
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This conference proceedings document is a compilation of 120 papers presented orally or as poster displays to the Fifth International Microgravity Combustion Workshop held in Cleveland, Ohio on May 18-20, 1999. The purpose of the workshop is to present and exchange research results from theoretical and experimental work in combustion science using the reduced-gravity environment as a research tool. The results are contributed by researchers funded by NASA throughout the United States at...
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, MICROGRAVITY, GRAVITATIONAL EFFECTS, COMBUSTION...
There is a need for a more responsive method for predicting maintenance manpower requirements for aircraft systems during development. This method should provide early estimates for use in trade offs and evaluations, and should be sensitive to the ways in which the new aircraft will be employed. A maintenance manpower simulation model was developed. In using the model, early estimates of maintenance task data for the new aircraft are based on Air Force experience with comparable subsystems and...
Topics: DTIC Archive, Tetmeyer, Donald C., Moody, William D., AIR FORCE HUMAN RESOURCES LAB BROOKS AFB TX,...
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This report describes work done under grant AFOSR-76-2962. This work has included the development of computer programs for simulating spacecraft charging at three levels of complexity: LOCHG, a relatively simple local-charging calculation; CYLVIA, a two-dimensional simulation program for treating cylindrical spacecraft cross-sections, and XYCIC, a simulation program for the treatment of a larger variety of two-dimensional geometries. This work has also included studies of two physical phenomena...
Topics: DTIC Archive, Laframboise,J G, YORK UNIV DOWNSVIEW (ONTARIO) CENTRE FOR RESEARCH IN EXPERIMENTAL...