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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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Measurement technique involves frequency modulated discriminator which produces an error signal as two signals, one of known and one of unknown frequency. The signals are electronically switched to a discriminator input, allowing independent measuring of dynamic linearity in a frequency modulated subcarrier oscillator.
New mathematical algorithm solves linear systems of equations, AX equals B, and preserves the integer properties of the coefficients. The algorithms presented can also be used for the efficient evaluation of determinates and their leading minors.
Set of design curves eliminates work involved in designing linear phase filters by being normalized in such a way as to apply to low, band, and high-pass filters of any bandwidth. Similar curves for any number of poles are plotted by solving a system of simultaneous equations.
Superconducting linear accelerator and use of superconductivity at low temperatures in physics experiments
Computational procedures for determining differential equation governing motion of linear and nonlinear structural systems subject to random excitation
Computational techniques for identifying linear and nonlinear mechanical systems subject to random excitation
Longitudinal edge effect in linear induction magnetohydrodynamic generators
Optimal piecewise constant solutions of linear regulator problem
Small signal characteristics of diode stabilized linear integrated devices
Trajectory optimization and linearized pitch computer program for Scout launch vehicle
ELAS general purpose digital computer program for equilibrium problems of linear structures
Digital computer program for determining modes and frequencies of arbitrary linear space frames
Representations for solutions of linear functional differential equations
Theory of linear estimation and applicability to problems of smoothing, filtering, extrapolation, and nonlinear estimation
Statistical feedback optimization of linear stochastic systems with measurement errors
Control of linear unstable systems using direct method of Liapunov
Rapid linear pyrolysis of thermoplastic solid fuels by intense heat flux levels to simulate combustion
Solution for linear boundary value problems using digital computers