232
232

Jun 2, 2011
06/11

by
Darcy, Eric; Strangways, Bra

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Contents include the following: 1. Introduction: What is the (Floating Potential Probe) FPP Why was NiMH battery selected Haw well would crimped seal cell performed in long term vacuum exposure 2. Verification tests: Battery description. Test methods. Results. Main findings. FPP status.

Topics: ALTIMETERS, FORTRAN, USER MANUALS (COMPUTER PROGRAMS), FILE MAINTENANCE (COMPUTERS), SOFTWARE...

242
242

Jul 12, 2010
07/10

by
English, R. E

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The thermionic and Brayton reactor concepts were compared for application to space power. For a turbine inlet temperature of 15000 K the Brayton powerplant weighted 5 to 40% less than the thermionic concept. The out of core concept separates the thermionic converters from their reactor. Technical risks are diminished by: (1) moving the insolator out of the reactor; (2) allowing a higher thermal flux for the thermionic converters than is required of the reactor fuel; and (3) eliminating fuel...

Topics: COASTAL WATER, AIR WATER INTERACTIONS, ANNUAL VARIATIONS, COMPUTERIZED SIMULATION, FORTRAN, FREE...

422
422

Jul 26, 2010
07/10

by
Liandrat, J.; Tchamitchian, PH

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The Burgers equation with a small viscosity term, initial and periodic boundary conditions is resolved using a spatial approximation constructed from an orthonormal basis of wavelets. The algorithm is directly derived from the notions of multiresolution analysis and tree algorithms. Before the numerical algorithm is described these notions are first recalled. The method uses extensively the localization properties of the wavelets in the physical and Fourier spaces. Moreover, the authors take...

Topics: COMPUTER PROGRAMS, DESIGN ANALYSIS, FORMAT, GEOMETRY, USER MANUALS (COMPUTER PROGRAMS), AERODYNAMIC...

372
372

Sep 20, 2010
09/10

by
Mcknight, R. L.; Huang, H.; Hartle, M

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Accomplishments are described for the third years effort of a 5-year program to develop a methodology for coupled structural/thermal/electromagnetic analysis/tailoring of graded composite structures. These accomplishments include: (1) structural analysis capability specialized for graded composite structures including large deformation and deformation position eigenanalysis technologies; (2) a thermal analyzer specialized for graded composite structures; (3) absorption of electromagnetic waves...

Topics: COMBUSTION STABILITY, COMBUSTION CHAMBERS, FORTRAN, HIGH FREQUENCIES, INTERMEDIATE FREQUENCIES, LOW...

PISCES 2 is a programming environment and set of extensions to Fortran 77 for parallel programming. It is intended to provide a basis for writing programs for scientific and engineering applications on parallel computers in a way that is relatively independent of the particular details of the underlying computer architecture. This user's manual provides a complete description of the PISCES 2 system as it is currently implemented on the 20 processor Flexible FLEX/32 at NASA Langley Research...

Topics: NASA Technical Reports Server (NTRS), PARALLEL COMPUTERS, PARALLEL PROGRAMMING, USER MANUALS...

This program produces a map giving an overall view of all components and attributes of a FORTRAN program unit run by Cray. Unlike the maps produced by the Cray FORTRAN compiler which relates only to a single module, this map relates to the entire program. It maps the usage of all variable and all commons used.

Topics: NASA Technical Reports Server (NTRS), CRAY COMPUTERS, FORTRAN, MAPPING, SUPERCOMPUTERS, USER...

The user's manual for the LOGSIM Program is presented. All program options are explained and a detailed definition of the format of each input card is given. LOGSIM Program operations, and the preparation of LOGSIM input data are discused along with data card formats, postprocessor data cards, and output interpretation.

Topics: NASA Technical Reports Server (NTRS), COMPUTER AIDED DESIGN, COMPUTER PROGRAMS, USER MANUALS...

This user's manual describes the input and output variables as well as the job control language necessary to utilize the IMP-H apogee motor firing program, IMPMOT. The IMPMOT program can be executed as either a stand-alone program or as a member of the flight dynamics system. This program is used to determine the time and attitude at which to fire the IMP-H apogee boost motor. The IMPMOT program is written in FORTRAN 4 for use on the IBM 360 series computer.

Topics: NASA Technical Reports Server (NTRS), EXPLORER 47 SATELLITE, USER MANUALS (COMPUTER PROGRAMS),...

This disk contains both a FORTRAN computer program and the corresponding user's guide that facilitates both its incorporation into your system and its utility. The computer program represents an efficient algorithm that routes signal traces on layers of a printed circuit with both through-pins and surface mounts. The computer program included is an implementation of the ideas presented in the theoretical paper titled "A Formal Algorithm for Routing Signal Traces on a Printed Circuit...

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, PRINTED CIRCUITS, ARTIFICIAL INTELLIGENCE,...

The Raster Graphics Display Library (RGDL) is a high level subroutine package that give the advanced raster graphics display capabilities needed. The RGDL uses FORTRAN source code routines to build subroutines modular enough to use as stand-alone routines in a black box type of environment. Six examples are presented which will teach the use of RGDL in the fastest, most complete way possible. Routines within the display library that are used to produce raster graphics are presented in...

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), COMPUTER GRAPHICS,...

A two dimensional linear aeroacoustic theory for rotor/stator interaction with unsteady coupling was derived and explored in Volume 1 of this report. Computer program CUP2D has been written in FORTRAN embodying the theoretical equations. This volume (Volume 2) describes the structure of the code, installation and running, preparation of the input file, and interpretation of the output. A sample case is provided with printouts of the input and output. The source code is included with comments...

Topics: NASA Technical Reports Server (NTRS), AEROACOUSTICS, COMPUTATIONAL FLUID DYNAMICS, INTERACTIONAL...

This manual presents computer programs FLAPS for characterizing and predicting fatigue and creep-fatigue resistance of metallic materials in the high-temperature, long-life regime for isothermal and nonisothermal fatigue. The programs use the Total Strain version of Strainrange Partitioning (TS-SRP), and several other life prediction methods described in this manual. The user should be thoroughly familiar with the TS-SRP and these life prediction methods before attempting to use any of these...

Topics: NASA Technical Reports Server (NTRS), FATIGUE LIFE, USER MANUALS (COMPUTER PROGRAMS), STRAIN...

The viscous driven-cavity problem is solved using a stream-function and vorticity formulation for the incompressible Navier-Stokes equations. This report provides the user's manual and FORTRAN code for the set of governing equations presented in NASA TM-110262.

Topics: NASA Technical Reports Server (NTRS), NAVIER-STOKES EQUATION, COMPUTATIONAL FLUID DYNAMICS,...

A FORTRAN coded computer program which determines secular variations in mean orbital elements of earth satellites and the lifetime of the orbit is described. The dynamical model treats a point mass satellite subject to solar and lunar disturbing gravitational fields, second, third and fourth harmonics of the earth's oblate potential, earth's atmospheric drag, and solar radiation pressure. Each of these disturbing functions may be selectively simulated. Data preparation instructions, a sample...

Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL SATELLITES, FORTRAN, ORBITAL ELEMENTS, USER...

There are no author-identified significant results in this report.

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, CROP INVENTORIES, DATA PROCESSING, KANSAS,...

A description of and users manual for a USA FORTRAN IV computer program which plots the planform and control points of a wing are presented. The program also plots some of the configuration data such as the aspect ratio. The planform data is stored on a disc file which is created by a geometry program. This program, the geometry program, and several other programs are used together in the analysis of lifting, thin wings in steady, subsonic flow according to a kernel function lifting surface...

Topics: NASA Technical Reports Server (NTRS), COMPUTER GRAPHICS, COMPUTER PROGRAMS, USER MANUALS (COMPUTER...

The total Bhattacharyya distance is calculated using all N channels. The output of this subroutine is used to construct the B matrix using one or two Householder transformations. FORTRAN calling sequences are given.

Topics: NASA Technical Reports Server (NTRS), COMPUTER SYSTEMS PROGRAMS, DISTANCE, USER MANUALS (COMPUTER...

The Pressure Visualization (PreViz) package is a software tool which merges a wireframe model of the test aircraft with pressure data represented as a series of displacement vectors normal to the aircraft's skin. The PreViz package automates much of the researcher's data reduction effort, reduces the time required to review large amounts of pressure data, presents the data more clearly than tabular listings, and provides a wireframe description for a black and white graphic suitable for a...

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, DYNAMIC PRESSURE, PRESSURE DISTRIBUTION,...

A design problem is viewed as a complex system divisible into modules. Before the design of a complex system can begin, the couplings among modules and the presence of iterative loops is determined. This is important because the design manager must know how to group the modules into subsystems and how to assign subsystems to design teams so that changes in one subsystem will have predictable effects on other subsystems. Determining these subsystems is not an easy, straightforward process and...

Topics: NASA Technical Reports Server (NTRS), COMPUTER AIDED DESIGN, EXPERT SYSTEMS, SYSTEM IDENTIFICATION,...

A users' manual for a new three-dimensional grid generator called 3DGRAPE is presented. The program, written in FORTRAN, is capable of making zonal (blocked) computational grids in or about almost any shape. Grids are generated by the solution of Poisson's differential equations in three dimensions. The program automatically finds its own values for inhomogeneous terms which give near-orthogonality and controlled grid cell height at boundaries. Grids generated by 3DGRAPE have been applied to...

Topics: NASA Technical Reports Server (NTRS), AERODYNAMICS, COMPUTATIONAL GRIDS, POISSON EQUATION, PROBLEM...

The programs described were developed to process GEODYN-formatted satellite altimeter data, and to apply the processed results to predict geoid undulations and gravity anomalies of inland sea areas. These programs are written in standard FORTRAN 77 and are designed to run on the NSESCC IBM 3081(MVS) computer. Because of the experimental nature of these programs they are tailored to the geographical area analyzed. The attached program listings are customized for processing the altimeter data...

Topics: NASA Technical Reports Server (NTRS), ALTIMETERS, COMPUTER PROGRAMS, DATA PROCESSING, GRAVITY...

RTMCL is a user friendly computer code which simulates the manufacture of fabric composites by the resin infusion process. The computer code is based on the process simulation model described in reference 1. Included in the user's guide is a detailed step by step description of how to run the program and enter and modify the input data set. Sample input and output files are included along with an explanation of the results. Finally, a complete listing of the program is provided.

Topics: NASA Technical Reports Server (NTRS), COMPOSITE STRUCTURES, COMPUTER PROGRAMS, FABRICS, INJECTION...

The FSLIP program documentation and user's manual is presented. As a follow on program to the FLEXSTAB computer analysis system, the primary function of this FORTRAN IV program is to integrate panel pressure coefficients computed by FLEXSTAB to obtain total shear, bending, and torque airloads on various surfaces, summed relative to user specified axes. The program essentially replaces the ALOADS module in FLEXSTAB with expanded capabilities and flexibility. As such, FSLIP is generalized to work...

Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC LOADS, COMPUTER SYSTEMS PROGRAMS, PRESSURE...

The FORTRAN program RANDOM2 is documented. RANDOM2 is based on fracture mechanics using a probabilistic fatigue crack growth model. It predicts the random lifetime of an engine component to reach a given crack size. Included in this user manual are details regarding the theoretical background of RANDOM2, input data, instructions and a sample problem illustrating the use of RANDOM2. Appendix A gives information on the physical quantities, their symbols, FORTRAN names, and both SI and U.S....

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), COMPONENT RELIABILITY,...

Descriptions of the operational requirements for all of the programs of the Automated Verification System (AVS) are provided. The AVS programs are: (1) FORTRAN code analysis and instrumentation program (QAMOD); (2) Test Effectiveness Evaluation Program (QAPROC); (3) Transfer Control Variable Tracking Program (QATRAK); (4) Program Anatomy Table Generator (TABGEN); and (5) Network Path Analysis Program (RAMBLE).

Topics: NASA Technical Reports Server (NTRS), AUTOMATIC CONTROL, FORTRAN, QUALITY CONTROL, USER MANUALS...

A users manual is described for a USA FORTRAN 4 computer program which computes an aerodynamic influence matrix and is one of several computer programs used to analyze lifting, thin wings in steady, subsonic flow according to a kernel function method lifting surface theory. The most significant features of the program are that it can treat unsymmetrical wings, control points can be placed on the leading and/or trailing edges, and a stable, efficient algorithm is used to compute the influence...

Topics: NASA Technical Reports Server (NTRS), LIFTING BODIES, SUBSONIC FLOW, USER MANUALS (COMPUTER...

Users are introduced to and instructed in the use of the Langley Easy (LEZ) routines of the Common Graphics Library (CGL). The LEZ routines form an application independent graphics package which enables the user community to view data quickly and easily, while providing a means of generating scientific charts conforming to the publication and/or viewgraph process. A distinct advantage for using the LEZ routines is that the underlying graphics package may be replaced or modified without...

Topics: NASA Technical Reports Server (NTRS), COMPUTER GRAPHICS, COMPUTER PROGRAMS, USER MANUALS (COMPUTER...

The appendices A-K to the user's manual for the rocket combustor interactive design (ROCCID) computer program are presented. This includes installation instructions, flow charts, subroutine model documentation, and sample output files. The ROCCID program, written in Fortran 77, provides a standardized methodology using state of the art codes and procedures for the analysis of a liquid rocket engine combustor's steady state combustion performance and combustion stability. The ROCCID is currently...

Topics: NASA Technical Reports Server (NTRS), COMBUSTION CHAMBERS, COMPUTER AIDED DESIGN, DESIGN ANALYSIS,...

FEMOM3DS is a computer code written in FORTRAN 77 to compute electromagnetic(EM) scattering characteristics of a three dimensional object with complex materials using combined Finite Element Method (FEM)/Method of Moments (MoM) technique. This code uses the tetrahedral elements, with vector edge basis functions for FEM in the volume of the cavity and the triangular elements with the basis functions similar to that described for MoM at the outer boundary. By virtue of FEM, this code can handle...

Topics: NASA Technical Reports Server (NTRS), USER MANUALS (COMPUTER PROGRAMS), FORTRAN, ELECTROMAGNETIC...

LINER is a system of Fortran 77 codes which performs a 2D analysis of acoustic wave propagation and noise suppression in a rectangular channel with a continuous liner at the top wall. This new implementation is designed to streamline the usage of the several codes making up LINER, resulting in a useful design tool. Major input parameters are placed in two main data files, input.inc and nurn.prm. Output data appear in the form of ASCII files as well as a choice of GNUPLOT graphs. Section 2...

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), WAVE PROPAGATION, USER...

Documentation for the FORTRAN program B2DATL is provided. The program input, output, and operational procedures are described; a dictionary of the principal FORTRAN variables is provided; the function of all subroutines; is outlined and flow charts of the principal subroutines and the main program are presented.

Topics: NASA Technical Reports Server (NTRS), CASCADES, COMPUTER PROGRAMS, TRANSONIC FLOW, UNSTEADY FLOW,...

DANST is a FORTRAN computer program for static and dynamic analysis of spur gear systems. The program can be used for parametric studies to predict the static transmission error, dynamic load, tooth bending stress and other properties of spur gears as they are influenced by operating speed, torque, stiffness, damping, inertia, and tooth profile. DANST performs geometric modeling and dynamic analysis for low- or high-contact-ratio spur gears. DANST can simulate gear systems with contact ratios...

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, USER MANUALS (COMPUTER PROGRAMS), GEARS,...

Information pertinent to users of the program to optimize simulated trajectories (POST) is presented. The input required and output available is described for each of the trajectory and targeting/optimization options. A sample input listing and resulting output are given.

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, COMPUTERIZED SIMULATION, TRAJECTORY...

This document contains the design of the proportional estimate processor which was written to satisfy the software requirement of Part A of the P1A experiment. The purposes of the project are: (1) to select the dots to be labelled; (2) to create tables of green numbers and brightness values for all selected dots per acquisition; (3) to create scatter plots of green numbers vs brightness for each acquisition for all selected dots. If labels have been provided then scatter plots of only...

Topics: NASA Technical Reports Server (NTRS), BRIGHTNESS, COMPUTER PROGRAMS, IMAGE PROCESSING, OPERATING...

A computer program (program LEE) has been developed to calculate the fully coupled solution of the radiating viscous stagnation streamline flow with strong blowing. The report describes the digital computer program, including FORTRAN IV listing, flow charts, instructions for the user, and a test case with input and output. Program LEE is available through COSMIC.

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, EQUILIBRIUM FLOW, LAMINAR FLOW, STAGNATION...

All subprograms or routines associated with the solid rocket booster performance evaluation model are indexed in this computer listing. An alphanumeric list of each routine in the index is provided in a table of contents.

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, INDEXES (DOCUMENTATION), PERFORMANCE...

A user's manual is provided for program PARACH, a FORTRAN digital computer program operational on the Univac 1108. A description of the program and operating instructions for it are included. Program PARACH is used to study the interaction dynamics of a parachute and its payload during terminal descent. Operating instructions, required input data, program options and limitations, and output data are described. Subroutines used in this program are also listed and explained.

Topics: NASA Technical Reports Server (NTRS), BOOSTER ROCKET ENGINES, DIGITAL SIMULATION, INPUT/OUTPUT...

A user's manual for the current CONIC computer program is presented. The program was written in FORTRAN for use on the TRW Time Share system. The CONIC program is used to calculate the relative motion of two bodies in any conic-section orbit (circular, elliptical, parabolic, or hyperbolic). This manual describes the basic equations used for trajectory propagation and defines the input and output parameters of the program. Sample runs with corresponding figures and a detailed flow chart of the...

Topics: NASA Technical Reports Server (NTRS), ORBIT CALCULATION, USER MANUALS (COMPUTER PROGRAMS), FORTRAN,...

The computer program AeroFcn is discussed. AeroFcn is a utility program that computes the following aerodynamic parameters: geopotential altitude, Mach number, true velocity, dynamic pressure, calibrated airspeed, equivalent airspeed, impact pressure, total pressure, total temperature, Reynolds number, speed of sound, static density, static pressure, static temperature, coefficient of dynamic viscosity, kinematic viscosity, geometric altitude, and specific energy for a standard- or a modified...

Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC CHARACTERISTICS, ALTITUDE, APPLICATIONS PROGRAMS...

The user's manual for a computer program that performs system optimization of gasdynamic lasers is provided. Detailed input/output formats are CDC 7600/6600 computers using a dialect of FORTRAN. Sample input/output data are provided to verify correct program operation along with a program listing.

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, GAS LASERS, USER MANUALS (COMPUTER...

Written in standard FORTRAN, NAS is capable of identifying linear as well as nonlinear relations between input and output parameters; the only restriction is that the input/output relation be linear with respect to the unknown coefficients of the estimation equations. The output of the identification algorithm can be specified to be in either the time domain (i.e., the estimation equation coefficients) or in the frequency domain (i.e., a frequency response of the estimation equation). The frame...

Topics: NASA Technical Reports Server (NTRS), LEAST SQUARES METHOD, PARAMETER IDENTIFICATION, USER MANUALS...

The Thermal Insulation System Analysis Tool (TISTool) was developed starting in 2004 by Jonathan Demko and James Fesmire. The first edition was written in Excel and Visual BasIc as macros. It included the basic shapes such as a flat plate, cylinder, dished head, and sphere. The data was from several KSC tests that were already in the public literature realm as well as data from NIST and other highly respectable sources. More recently, the tool has been updated with more test data from the...

Topics: NASA Technical Reports Server (NTRS), SYSTEMS ANALYSIS, THERMAL INSULATION, APPLICATIONS PROGRAMS...

An optimized cost and performance model for a phosphoric acid fuel cell power plant system was derived and developed into a modular FORTRAN computer code. Cost, energy, mass, and electrochemical analyses were combined to develop a mathematical model for optimizing the steam to methane ratio in the reformer, hydrogen utilization in the PAFC plates per stack. The nonlinear programming code, COMPUTE, was used to solve this model, in which the method of mixed penalty function combined with Hooke...

Topics: NASA Technical Reports Server (NTRS), ELECTRIC POWER PLANTS, OPTIMIZATION, PHOSPHORIC ACID FUEL...

A user's manual for using FORTRAN code to perform electromagnetic analysis of arbitrarily shaped material cylinders using a hybrid method that combines the finite element method (FEM) and the boundary element method (BEM). In this method, the material cylinder is enclosed by a fictitious boundary and the Maxwell's equations are solved by FEM inside the boundary and by BEM outside the boundary. The electromagnetic scattering on several arbitrarily shaped material cylinders using this FORTRAN...

Topics: NASA Technical Reports Server (NTRS), BOUNDARY ELEMENT METHOD, FINITE ELEMENT METHOD, USER MANUALS...

This manual describes the use of the computer code ICAN/DAMP (Integrated Composite Analyzer with Damping Analysis Capabilities) for the prediction of damping in polymer-matrix composites. The code is written in FORTRAN 77 and is a version of the ICAN (Integrated Composite ANalyzer) computer program. The code incorporates a new module for synthesizing the material damping from micromechanics to laminate level. Explicit micromechanics equations based on hysteretic damping are programmed relating...

Topics: NASA Technical Reports Server (NTRS), DAMPING, LAMINATES, MATRIX MATERIALS, MICROMECHANICS, POLYMER...

A user's manual for a set of computer programs written in FORTRAN for the layout and generation of photomasks is presented. A limited amount of related information on photomasks, their design, and use is included. Input to the programs includes data describing the photomask design. Possible outputs include plots of the layout and a magnetic tape for controlling generation of the photomask by a pattern generator.

Topics: NASA Technical Reports Server (NTRS), HYBRID CIRCUITS, INTEGRATED CIRCUITS, PATTERN REGISTRATION,...

Linear least squares estimation and regression analyses continue to play a major role in orbit determination and related areas. A library of FORTRAN subroutines were developed to facilitate analyses of a variety of estimation problems. An easy to use, multi-purpose set of algorithms that are reasonably efficient and which use a minimal amount of computer storage are presented. Subroutine inputs, outputs, usage and listings are given, along with examples of how these routines can be used. The...

Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMMING, INDEPENDENT VARIABLES, LEAST SQUARES...

A variety of computational methods were developed to obtain shockless or near shockless flow past two-dimensional airfoils. The approach used was the method of complex characteristics, which determines smooth solutions to the transonic flow equations based on an input speed distribution. General results from fluid mechanics are presented. An account of the method of complex characteristics is given including a description of the particular spaces and coordinates, conformal transformations, and...

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), BOUNDARY VALUE PROBLEMS,...

Three-dimensional unsteady viscous effects can significantly influence the performance of fixed and rotary wing aircraft. These effects are important in both flows about helicopter rotors in forward flight and flows about three-dimensional (swept and tapered) supercritical wings. A computational procedure for calculating such flow field was developed. The procedure is based upon an alternating direction technique employing the Linearized Block Implicit method for solving three-dimensional...

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), BOUNDARY LAYER EQUATIONS,...

The user's manual for the rocket combustor interactive design (ROCCID) computer program is presented. The program, written in Fortran 77, provides a standardized methodology using state of the art codes and procedures for the analysis of a liquid rocket engine combustor's steady state combustion performance and combustion stability. The ROCCID is currently capable of analyzing mixed element injector patterns containing impinging like doublet or unlike triplet, showerhead, shear coaxial, and...

Topics: NASA Technical Reports Server (NTRS), COMBUSTION CHAMBERS, COMPUTER AIDED DESIGN, COMPUTER...