Static DC to sinusoidal AC inverter using techniques of high-frequency pulse-width modulation.
HF pulse width modulation applied to DC to sinusoidal AC inverter to provide LF sine wave output without LF transformer or filter
Babaa, I. M. H.↗
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Results for “Modulation”
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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Distortion and Crosstalk of Linearly Filtered, Angle-Modulated Signals
Linearly filtered angle modulated signals distortion and crosstalk analysis applied to filter input-output relation, noting satellite communication FM reception
Bedrosian, E.↗
Broadband, low drive-power electrooptic modulator.
Broadband low drive power electro-optic laser beam optical intensity modulator design and test results
Bicknell, W. E.↗
Testing and analysis of the lunar module supercritical helium pressurization system.
Apollo lunar module cryogenically stored supercritical He propellant tank pressurization system in descent propulsion subsystem, discussing design and performance tests
Boyland, R. E.↗
The stability of integral pulse frequency modulation systems.
Stability of single loop feedback circuit comprising integral pulse frequency modulator and stationary linear system
Cumpston, J. R.↗
Two-position roll modulation of lift for aerodynamic braking of a Mars entry vehicle.
Two position roll modulation of lift for aerodynamic braking for soft landing on Mars, solving boundary value problem by quasi- linearization
Niemann, R. A.↗
Experiments on a multistage electrooptic amplitude modulator.
Multistage electro-optic amplitude modulator performance tests, noting agreement between experiment and theory
Ammann, E. O.↗
The Apollo Lunar Module Reaction Control System.
Apollo lunar module pressure-fed bipropellant reaction control system design requirements and system description
Grossman, R. L.↗
Simulation of the Apollo Command Module aerodynamics at re-entry altitudes.
Apollo Command Module aerodynamics at reentry altitudes simulated by models in hypersonic flow
Boylan, D. E.↗
Complex stochastic noise and modulation.
Distribution theory to represent stochastic modulation and noise processes as analytic time functions
Gupta, S. C.↗
Improved modulation and coding methods for space communication systems.
Modulation and coding methods for deep space communication systems requirements, noting decreased error probability in onboard data reduction
Heller, J. A.↗
On the stability of pulse-width-modulated feedback systems.
Pulse width modulated feedback systems stability, discussing Nyquist criterion for sample data systems
Skoog, R. A.↗
Proton and helium nuclei cosmic-ray spectra and modulations between 100 and 2000 Mev/nucleon.
Proton and He nuclei cosmic ray differential energy spectra, examining functional form of 11 year solar modulation
Ormes, J. F.↗
Solar modulation of galactic cosmic rays and its effect on meteorites.
Meteorites surface layers composition changes measured to determine solar modulation magnitude effect on galactic cosmic rays
Shen, C. S.↗
A performance study of the lunar module's landing radar system.
Lunar landing module Doppler radar system in guidance navigation and control system, studying mathematical model performance
Eichler, J.↗
Cosmic-ray proton and helium spectra and solar modulation effects in the new solar cycle measured with a four-element counter telescope.
Primary cosmic ray proton and He energy spectra and solar modulation effects during sunspot minimum from balloon-borne scintillation counter telescope data
Ormes, J. F.↗
Solar modulation of galactic cosmic rays near solar minimum /1965/.
Cosmic rays intensity variation and heavy nuclei energy spectra investigation to interpret galactic cosmic rays solar modulation near sunspot minimum
Balasubrahmanyan, V. K.↗
Implications of the cosmic-ray radial intensity gradients observed during minimum solar modulation.
Galactic cosmic ray radial intensity gradients modulation by interplanetary medium at solar minimum and at other phases of solar cycle
Ogallagher, J. J.↗