A digital controller employing truncated logarithmic quantization
Truncated logarithmic quantization for digital controller
LOGARITHM↗
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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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Study for the indicial load effects on multistage space vehicle systems. volume iii- a description of the computer programs employed annual summary report, 21 jun. 1963 - 20 aug. 1964
Documentation of computer programs used to study load effects on multistage space vehicle systems
LOAD FACTOR↗
Comments on synthesis techniques employing the direct method
Equations for investigating control signal by continuous and discontinuous sign functions based on synthesis technique using Liapunov direct method
SIGNAL DETECTION↗
Test-stand study of a vehicle upper stage employing a rotating solid-rocket attitude control system and a comparison with analog studies
Rotating solid rocket control system - test stand study of vehicle upper stage, and comparison with analog studies
ROTATING VEHICLE↗
Synthesis techniques employing the direct method.
Liapunov direct method applied to design of controllers for class of nonlinear time-varying processes
NONLINEAR SYSTEM↗
Methods employed in america for the experimental investigation of aerodynamic phenomena at high speeds
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Jacobs, E. N.↗
Nixie tube display unit employs time-shared logic
Cathodes of display tubes wired in parallel achieve input switching simplification of a Nixie tube display system. Use of time- shared logic energizes the appropriate anode and inhibits all unnecessary cathodes.
Gray, J.↗
Fuel and oxidizer valve assembly employs single solenoid actuator
Valve assembly simultaneously starts or stops the flow of oxidizer and fuel from separate inlet channels to reaction control motors. The assembly combines an oxidizer shutoff valve and a fuel shutoff valve which are mechanically linked and operated by a single high-speed solenoid actuator.
Source record↗
A study of Gemini-Agena docking using a fixed-base simulator employing a closed-circuit television system
Gemini-Agena docking using fixed base visual simulator with closed circuit television system
CLOSED CIRCUIT TELEVISION↗
Two experiments yielding lunar surface information employing polarized radar waves
Polarized radar waves used for determining local statistical electromagnetic backscattering properties of lunar or other planetary surface
ELECTROMAGNETIC SCATTERING↗
Development of a mass spectrometer employing a photoionization source
Mass spectrometer using photoionization for ion production
MASS SPECTROMETER↗
A study of the feasibility of employing a magnetic mass spectrometer for the analysis of the Martian atmosphere
Magnetic-sector mass spectrometer for Mars atmosphere analysis
PLANETARY ATMOSPHERE↗
A day-night high resolution infrared radiometer employing two-stage radiant cooling, volume I First quarterly report, 1 Jan. - 1 Apr. 1966
Two-stage radiant cooler for infrared detector in day-night high resolution radiometer on Nimbus- type spacecraft
RADIATION COOLING↗
A day-night high resolution infared radiometer employing two-stage radiant cooling, volume II First quarterly report, 1 Jan. - 1 Apr. 1966
Theoretical calculations of time constants, view factor, and cone and gold surface emissivities for radiant cooler of infrared detector
INFRARED DETECTOR↗
Structural weight and cost comparison of large space structures employing beryllium-aluminum alloys.
Axially loaded cylindrical structures analyzed for optimum weight construction consistent with cost constraint, emphasizing beryllium-aluminum alloys
ALUMINUM ALLOY↗
Linear estimators of the export employment multiplier working paper no. 6415
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Terry, E.↗
New electron microscope employs new video display technique
Video display system for a scanning electron microscope provides slow scanning rates, a self-generated color gradient technique, and allows leisurely viewing of several hours. It also enables the viewing of areas where selected energy regions contribute relatively few electrons, and the changing of specimen position and magnification without adjustments.
Brookshier, W. K.↗
Improved frequency divider employs transistor avalanche effect
New frequency divider circuit can be synchronized over a wider input control frequency range, has greater phase stability, and is less sensitive to temperature changes than conventional synchronized oscillators. The new circuit uses the avalanche breakdown mode of operation of transistors.
Johns, C. E.↗