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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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Computerized method of analysis predicts bearing loads, shaft deflections, and critical speeds for shafts coupled by rolling contact bearings to the machine housing. The bearing nonlinearities, casing as well as rotor dynamics, and rotor-imbalance forcing functions are all included in the system dynamics analysis.
FORTRAN 4 program for predicting charring ablation performance of Apollo heat shield in turbulent flow
Feasibility of analytical error analysis applied to thermal network solutions
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Programs based on equations that include functions for boundary values along nozzle axis yield different types of flow field configurations. Program's documentation details method of calculating subsonic flow field and sonic line, and describes modified method of characteristics for calculating supersonic flow downstream of sonic line.
Program evaluates propellant heating in a nuclear rocket stage. Program code employs infinite-medium buildup factors to calculate gamma dosage and employs the Albert-Welton kernal to calculate the fast neutron dosage.
Input data cards program listing for MTRAC
FORTRAN matrix conversion for implementing FORMAT 2 on system 360 for airframe structural strain analysis
MTRAC program for transient analysis of circuits with square loop magnetic cores based on linearization of nonlinear circuit elements and Kirchhoff current law
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Calculation is taken from pressure or velocity distribution along blade surface. Blade sections have either one or two /tandem/ blade segments. Program is recommended primarily for use with ideal flow pressure distributions where forces in drag direction are neglected.
Program generates and solves governing equations for unknown deflection of mesh points as if problem were to locate stationary point of total potential function associated with given loading and unknown deflections. Solution is obtained by means of displacement method and finite element technique.
Program is used in design of turbomachinery blade rows, where fluid velocities in blade to blade passage must be obtained. TURBLE requires input data on blade geometry, meridional stream-channel geometry, total flow conditions, weight flow, and inlet and outlet flow angles.
Fast algorithm for minimization of Boolean functions to two level and-or form
FORTRAN program for computerized design of axial flow pump by blade element analysis
Computerized stability design of time lag combustion system for liquid propellant rocket engine
Algorithm for simultaneous minimization of multiple Boolean functions with application to telemetry system