Cross-grid display and computer input study Final report, Apr. - Dec. 1969
Feasibility of plasma panels as graphic display devices
Schott, D. J.↗
SEARCH · Search NASA
Results for “Input”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Dual-channel circuit conditions/amplifies transducers' inputs and outputs
Circuit includes two data channels and one shared precision power supply installed on a single 11.4 cm square circuit card. The unit is relatively inexpensive, compact, and suitable for most tests where low-noise and high-gain signal processing is required.
Murphy, K. M.↗
Approximate properties of the response of nonlinear dynamic systems to stochastic inputs
Indirect method considers effect of nonlinearity and obtains approximate probability densities of certain characteristics, from these densities various statistical properties are calculated. Direct method determines response moments directly. Neither method is restricted by system motion with regard to whether or not it is stationary.
Zirkle, L. D.↗
Multiple input radio receiver Patent
Radio receiver with array of independently steerable antennas for deep space communication
Schrader, J. H.↗
GIG - A FORTRAN 4 geometry input generator program for a finite-element heat- transfer code
FORTRAN computer program for generating geometrical data of heat transfer code
Sprague, E. L.↗
Solid state pulse generator with constant output width, for variable input width, in nanosecond range Patent
Development and characteristics of single or doubl pulse generator which produces constant width pulses in nanosecond region
Garrahan, N. M.↗
Passive synchronized spike generator with high input impedance and low output impedance and capacitor power supply Patent
Pulse generator for synchronizing or resetting electronic signals without requiring separate external source
Cancro, C. A.↗
Low input voltage conversion from unconventional primary /RTG'S/ and secondary /battery/ sources
Voltage converter/regulator for primary and secondary power sources in deep space missions
Pasciutti, E. R.↗
A three dimensional model of thermospheric - 1 - Heat input and eigenfunctions
Three dimensional thermospheric model developed from solar XUV radiation and corpuscular heating during geomagnetic storms of atmospheric system
Mayr, H. G.↗
Analysis of subjective ratings for the XB-70 airplane response to atmospheric turbulence and controlled inputs
Pilot subjective evaluation of XB-70 aircraft response to atmospheric turbulence in comparison with measured accelerations
Ehernberger, L. J.↗
Safety inputs to development program plans
Safety engineers integration into overall system through basic development programs, involving management, manufacturing, testing and integrated logistic support
Ball, L. W.↗
A three dimensional model of thermospheric dynamics. I - Heat input and eigenfunctions
Thermospheric dynamics three dimensional model in terms of atmospheric system eigenfunctions, deriving formulas for solar XUV and corpuscular heating during geomagnetic storms
Mayr, H. G.↗
Optimization theory for time-variant missile systems and nonstationary inputs
Explore the source record for details and available documents.
Smith, G. L.↗
Vortex servovalve for fluidic or electrical input
Proportional-pressure control servovalve consisting of fluid amplifier bellows-driven jet-pipe and two vortex valves operating in push-pull, with a pair of bellows for pressure feedback is tolerant to comtaminant particles and meets minimum standby flow requirements for applications such as rocket thruster nozzles.
Honda, T. S.↗
Computer Program and User Documentation Medical Data Input System
Several levels of documentation are presented for the program module of the NASA medical directorate minicomputer storage and retrieval system. The biomedical information system overview gives reasons for the development of the minicomputer storage and retrieval system. It briefly describes all of the program modules which constitute the system. A technical discussion oriented to the programmer is given. Each subroutine is described in enough detail to permit in-depth understanding of the routines and to facilitate program modifications. The program utilization section may be used as a users guide.
Anderson, J.↗
Pressure-fluctuation inputs and response of panels underlying attached and separated supersonic turbulent boundary layers
Results are presented for an investigation of surface pressure fluctuations and response of panels underlying attached and separated turbulent boundary layers and shock waves. Tests conducted at transonic and supersonic Mach numbers to 3.6 to study the pressure fields. Assorted fixed edge flat panels were tested at Mach numbers from 1.6 to 3.6 in attached and completely separated flow fields, and also in mixed flow with a step-induced shock wave oscillating on the panels. The surface pressure fluctuations are described in terms of broadband rms, spectral density, and spatial correlation information. The effectiveness of parameters for scaling the pressure fluctuations is also illustrated. Measurements of the amplitude and strain response of the panels are compared with response computations by the normal mode method of analysis.
Coe, C. F.↗
Regulated dc-to-dc converter for voltage step-up or step-down with input-output isolation.
A dc-to-dc regulated-converter circuit employing duty-cycle control with variable on and variable off time has been presented. A unique feature of this converter is the method by which the bistable-comparator output controls the duty cycle of the power switching transistor through the action of the encoder. The utilization of minor-loop flux excursions of a saturable-core transformer in the encoder makes it feasible to extend the converter switching frequency considerably higher than would normally be possible. With this converter circuit, high and very-high frequency converter operations were explored.
Feng, S. Y. M.↗
Strain-biased PLZT input devices /page composers/ for holographic memories and optical data processing.
The features of a new class of transparent ferroelectric ceramic materials, called PLZT, are described. PLZT are shown to have very strong electrooptic properties and memory, and are switched through transparent electrodes when mechanically strained. Because of these properties, they can be used to fabricate two-dimensional page composers for coherent optical systems. Techniques for fabricating such devices are outlined along with preliminary test results. Applications in displays are shown to be also feasible.
Roberts, H. N.↗