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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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Approximate dynamic programming with policy-based exploration for microgrid dispatch under uncertainties
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An Algorithm to Warm Start Perturbed (WASP) Constrained Dynamic Programs
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Seismic Event Discrimination Using Dynamic Programming Methods
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Application of dynamic programming to optimizing the orbital control process of a 24 hour communication satellite
Optimization of 24-hour communication satellite orbital control process
Landing dynamics program for impact attenuating vehicles /LANDIT/
Computer program accurately predicts impact response of previously designed disc-type Mars prototype landing vehicle. Program may be used in any design area where energy dissipation is considered.
Dynamic programming as applied to feature subset selection in a pattern recognition system.
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User's guide for Skylab dynamics program, SKYDYN
This user's manual describes the capabilities, required input data, and resulting output of SKYDYN, version of the 6 degree-of-freedom digital program REENTR which was extensively modified for the Honeywell CP-V system and was tailored to the specfic requirements for SKYLAB.
NASA/FAA general aviation crash dynamics program
The program involves controlled full scale crash testing, nonlinear structural analyses to predict large deflection elastoplastic response, and load attenuating concepts for use in improved seat and subfloor structure. Both analytical and experimental methods are used to develop expertise in these areas. Analyses include simplified procedures for estimating energy dissipating capabilities and comprehensive computerized procedures for predicting airframe response. These analyses are developed to provide designers with methods for predicting accelerations, loads, and displacements on collapsing structure. Tests on typical full scale aircraft and on full and subscale structural components are performed to verify the analyses and to demonstrate load attenuating concepts. A special apparatus was built to test emergency locator transmitters when attached to representative aircraft structure. The apparatus is shown to provide a good simulation of the longitudinal crash pulse observed in full scale aircraft crash tests.
Basic research for the Earth dynamics program
A comparison of data from Project MERIT Short Campaign is presented. The time delay weight matrix in VLBI geodetic parameter estimation was investigated. The utilization of range difference observations in geodynamics is discussed.
Basic research for the Earth dynamics program
The technique of range differencing with Lageos ranges to obtain more accurate estimates of baseline lengths and polar motion variation was studied. Differencing quasi simultaneous range observations eliminate a great deal of orbital biases. Progress is reported on the definition and maintenance of a conventional terrestrial reference system.
Terminal Area Productivity Program: Dynamic Spacing Human Factors
Dynamic spacing human factors deals with the following human factors issues: define controller limits to incorporating dynamic changes in separation standards; identify timing, planning, and coordination strategies; and consider consistency with current practices, policies, and regulations. The AVOSS technologies will make it possible to reduce separation standards in the terminal area under certain meteorological conditions. This paper contains the following sections: Dynamic space human factors overview, Preliminary tests, and current research status & plans.
Deterministic Dual Dynamic Programming Applied to Optimal Power System Restoration
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Analysis of dynamic systems with DAP4H computer program
Dynamic Analysis Program, FORTRAN 4 Level H /DAP4H/, developed from 27 subprograms, features liberal use of the subroutines, subprograms, and skeletonization to minimize programming effort in formulating models of new systems and components. It formulates mathematical models of complex mechanical, pneumatic, and hydraulic dynamic systems.
Computer program for the prediction of reorientation flow dynamics
Program uses Navier-Stokes and continuity equations for incompressible, viscous fluid as the basic equations governing reorientation flow dynamics. Program can simulate curved as well as straight-walled boundaries; has ability to calculate both free-surface and confined flows; and can be used in either cylindrical or plane geometry.
NES/ETS-1 duct structural dynamics. NERVA PROGRAM
Structural dynamics analysis of nuclear exhaust system duct for Nerva engine test stand