Computer program for thermodynamic performance of Brayton-cycle space-power systems
Computer program for calculating thermodynamic performance of Brayton cycle space power systems
SPACECRAFT POWER SUPPLY↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Computer program performs frequency analysis of nonuniform turbine disk subjected to temperature gradients
Computer program determines the natural frequencies of a turbine disk of variable thickness subjected to uniform rotation and radial temperature gradients by using Rayleigh-Ritzs procedure. The program involves the potential and kinetic energy expressions for a circular flat plate of variable thickness.
Soo, P. P.↗
General Computer Program for Calculation of Radiation from Inhomogeneous, Nonisobaric, Nonisothermal Rocket Exhaust Plume
Computer program evaluates radiation from an axisymmetric gas body with water vapor, carbon dioxide, carbon monoxide, and solid carbon particles as radiating constituents, and hydrogen as a nonradiating constituent. The program provides a convenient method of evaluating a great many problems of radiation from rocket exhaust plumes.
Dash, M. J.↗
Computer program offers new method for constructing periodic orbits in nonlinear dynamical systems
Computer program uses an iterative method to construct precisely periodic orbits which dynamically approximate solutions that converge to precise dynamical solutions in the limit of the sequence. The method used is a modification of the generalized Newton-Raphson algorithm used in analyzing two point boundary problems.
Bennett, A. G.↗
Computer program analyzes Buckling Of Shells Of Revolution with various wall construction, BOSOR
Computer program performs stability analyses for a wide class of shells without unduly restrictive approximations. The program uses numerical integration, finite difference of finite element techniques to solve with reasonable accuracy almost any buckling problem for shells exhibiting orthotropic behavior.
Almroth, B. O.↗
Interplanetary guidance system requirements study. Volume 2 - Computer program description. Part 4 - Performance assessment for all inertial guidance systems
Digital computer program for performance analysis of all inertial guidance system along reference trajectories
Source record↗
Reaction control system integrated systems performance analysis - LM computer program user's manual
Reaction control system integrated systems performance analysis LM computer program - users manual
Garza, C. C., Jr.↗
A computer program for electron probe microanalysis in the fields of metallurgy and geology
Computer program for metallurgical and geological data reductions
Comella, P. A.↗
A computer program for the mixed analysis of variance model based on maximum likelihood
Computer program for mixed analysis of variance model based on maximum likelihood
Hartley, H. O.↗
Computer program to calculate convective heat-transfer coefficients from harmonic temperature oscillations
Computer program for calculation convective heat transfer coefficients from harmonic temperature oscillations
Amling, G. E.↗
Computer program for preliminary design and analysis of V/STOL tip-turbine fans
Computer program for design and analysis of V/STOL tip turbine fans
Auer, B. M.↗
Outer planet data presentation computer program. Volume 2: Appendixes
Sample data cases for outer planet data presentation computer program
Source record↗
ALLMAG, GDALMG, LINTRA: Computer programs for geomagnetic field and field-line calculations
A set of computer programs has been developed for the calculation of the geomagnetic field and the tracing of field lines in space. The basic subroutine, geocentric ALLMAG, contains coefficients for seven recently-published field models as built-in data statements. At execution time the user can vary the model and/or the time period by simply changing input parameters. Subroutine GDALMG is adapted for input and output in geodetic coordinates. ALLMAG and GDALMG are equivalent to Cain's FIELD and FIELDG, with the added flexibility of the choice of seven models. LINTRA traces field lines from any point in space to a specified altitude intersect in the same or opposite hemisphere, using any of the models contained in ALLMAG. Input is in either geocentric or geodetic coordinates, and output is returned in both. McIlwain's INVAR package, which calculates B and L, has been adapted to use ALLMAG. All programs are described in detail, and sample calculations are given.
Stassinopoulos, E. G.↗
Supplement to the ICRPG turbulent boundary layer nozzle analysis computer program
A supplement is presented for a turbulent boundary layer nozzle analysis computer program. It describes the program calculation sequence and presents a detailed documentation of each subroutine. Important equations are derived explicitly, and improvements to the program are discussed.
Omori, S.↗
Computer programs for calculation of thermodynamic functions of mixing in crystalline solutions
The computer programs Beta, GEGIM, REGSOL1, REGSOL2, Matrix, and Quasi are presented. The programs are useful in various calculations for the thermodynamic functions of mixing and the activity-composition relations in rock forming minerals.
Comella, P. A.↗
Practical application of computer programs for supersonic combustion
Experimental data were interpreted using two supersonic combustion computer programs. The P1 program is based on a conventional boundary layer treatment of the mixing of concentric gas streams and complete combustion chemistry. The H1 program is based on a modified boundary layer approach which accounts for radial pressure gradients in the flow and also incorporates a finite rate chemistry calculation. The objective of the investigation was to compare the experimental data with theoretical predictions of the two programs with special emphasis on the prediction of radial pressure gradients by the H1 program. A test of the H1 program was also desired through comparison with the experimental data and with the P1 program.
Groves, F. R., Jr.↗
Fluid dynamics computer programs for NERVA turbopump
During the design of the NERVA turbopump, numerous computer programs were developed for the analyses of fluid dynamic problems within the machine. Program descriptions, example cases, users instructions, and listings for the majority of these programs are presented.
Brunner, J. J.↗
Computer program for thin-wire structures in a homogeneous conducting medium
A computer program is presented for thin-wire antennas and scatters in a homogeneous conducting medium. The anaylsis is performed in the real or complex frequency domain. The program handles insulated and bare wires with finite conductivity and lumped loads. The output data includes the current distribution, impedance, radiation efficiency, gain, absorption cross section, scattering cross section, echo area and the polarization scattering matrix. The program uses sinusoidal bases and Galerkin's method.
Richmond, J. H.↗