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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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INTAP - Interplanetary Trajectory Analysis Program
Computer program for studying point-to-point nonintegrated heliocentric conic section trajectories
PAP - Parametric Analysis Program
Computer program for parametric analysis of systems of nonlinear functions
PERTRAN - A transport-perturbation program
Computer programs for determining neutron lifetime, effective delayed neutron fraction, and reactivity contributions
A brief discussion of Berger's latest Monte Carlo program
Computer program based on Monte Carlo method for calculating transport of electrons and photons through matter
Fast Mars communication geometry program
Computer program calculates trajectories of orbiting spacecraft and lander vehicles simultaneously. Using data from both vehicles, program calculates communications geometry which consists of orbiting spacecraft cone/clock angle, lander cone/clock angle, range, range rate and acceleration, and fade, reflective, and system margins.
Non-symmetrical two dimensional scattering program
Computer program, 2DSCAT, solves integral equation for currents induced by electric or magnetic plane wave incident upon one or more conducting cylinders. Subroutine, FIELD, assumes that an incident wave is perpendicular to the cylindrical surface. Restrictions on this program are given.
Symmetrical two dimensional scattering program
Computer program solves integral equation for currents induced by electric or magnetic plane wave incident upon one or more conducting cylinders with a midplane of symmetry. Program utilizes symmetry of the geometry. Restrictions on the program are given.
Tracking antenna deformation program
Computer program provides capability for analyzing accelerometer data obtained from impulsive testing of large antennas, and of determining from that data pertinent characteristics /amplitude, frequency, damping/ of the structural modes excited by the impulse.
Radiation view factor program
Computer program, RAVFAC, calculates diffuse radiation view factors, using contour integrals. Technique is combined with finite difference /double summation/ technique to compose total program package.
Quick response targeting program
Computer program generates and verifies operational launch vehicle targeting presettings for lunar free-return missions and lunar landing missions. Program is applicable in astronomy and nuclear physics, and in areas where improved targeting techniques are valuable.
Battery simulation program
Computer program calculates spacecraft battery energy at specific times dictated by input sequence of recharge, discharge, and no activity phases. Recharge phases are assumed during times not specified, unless batteries are fully charged. Warnings are printed when energy falls below specified level. Program assumes two identical batteries.
Metabolic balance analysis program
Computer program calculates 28 day diet for life support consumables requirements and waste removal. Equations representing food breakdown into carbohydrates, fats, and proteins, modified to account for digestive materials and indigestible crude fibers, formulate total energy consumption. Program applications are listed.
Optical design and analysis program
Computer program provides efficient handling of optical analysis equations and is sufficiently general in approach to accept wide variety of systems. Diagnostic messages are generated to aid user in pinpointing any inconsistencies in system definition.
Analysis of folding strains on composite bladder structures. Volume 2 - Programming manual. Folding strains analysis program
Computer program for analysis of folding strains on composite bladder structures
Tree analysis code /TRACE/ program E64106. NERVA program
Computer program for Monte Carlo simulation of fault trees in analysis of large complex systems
Flight operations and DSN programming
Computer programs for calculating trajectories to Mars and Jupiter
Apollo cryogenic integrated systems program
Computer program for simulation of nominal and anomalous operation of Apollo cryogenics storage system