Measurement of embedment stresses in electronic modules.
Reliable test method based on special strain gauge load transducer for embedment axial stress measurement in electronic modules
STRAIN GAUGE↗
SEARCH · Engineering Papers
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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Development of the manual thrust vector mode /MTVC/ of the Apollo command and service module stabilization and control system /SCS/.
Manual thrust vector control development for Apollo Command and Service Module Stabilization and Control System
COMMAND MODULE↗
Wirecon - A wire-connected module system.
Wire-connected electronic packaging module system providing change capability, design flexibility, arrangement freedom and volumetric efficiency
ELECTRONIC MODULE↗
Nonlinear theory of the internally loss- modulated laser.
Nonlinear theory of internally loss modulated laser including effect of arbitrary atomic line shape, saturation and mode pulling
PHASE LOCK↗
Determination of modulation indexes and design of two-channel coherent communication systems.
Modulation indexes for two-channel phase coherent communication system determining data rate yielding predetermined bit-error probability
COMMUNICATION SYSTEM↗
Solar modulation of cosmic rays and its relationship to proton and helium fluxes, interstellar travel, and interstellar secondary production.
Solar wind modulation of low energy galactic cosmic radiation, estimating primary source spectra, proton and helium fluxes
MODULATION TECHNIQUE↗
A performance study of the lunar module /LM/ LANDING radar system.
Lunar landing module Doppler radar system in guidance navigation and control system, studying mathematical model performance
DOPPLER RADAR↗
Solar dynamic power module design
Studies have shown that use of solar dynamic (SD) power for the growth eras of the Space Station Freedom program will result in life cycle cost savings when compared to power supplied by photovoltaic sources. In the SD power module, a concentrator collects and focuses solar energy into a heat receiver which has integral thermal energy storage. A power conversion unit (PCU) based on the closed Brayton thermodynamic cycle removes thermal energy from the receiver and converts that energy to electrical energy. Since the closed Brayton cycle is a single phase gas cycle, the conversion hardware (heat exchangers, turbine, compressor, etc.) can be designed for operation in low earth orbit, and tested with confidence in test facilities on earth before launch into space. The concentrator subassemblies will be aligned and the receiver/PCU/radiator combination completely assembled and charged with gas and cooling liquid on earth before launch to, and assembly on orbit.
Space power↗
Transmit/receive modules for large aperture membrane phase arrays (T/R membrane)
This paper discusses the challenges of placing Transmit/Receive (T/R) modules on a membrane array to achieve an active phased array.
high efficiency T/R module class E amplifier class↗
Three-wave mixing with whispering-gallery modes for electro-optic modulation and photonic reception
We demonstrate an electro-optic microwave modulator with milliWatt control power and a sub-microWatt photonic receiver based on triply-resonant three-wave mixing in high-Q toroidal lithium niobate cavities with whispering-gallery (WG) modes.
processing lithium niobate↗
Cooperative modulation for long haul relay in sensor networks
Cooperative modulation techniques can reduce the energy requirements for the long haul transmission of data from localized sensor networks.
modulation sensor networks↗
The application of large format, broadband QWIP arrays to spatially modulated prism interferometers
The Spatially Modulated Prism Interferometer (SMPI) is a new type of imaging interferometer that has double the efficiency of conventional interferometers and only a fraction of the mass and volume.
QWIP solid-state interferometer spatially modulate↗
Multiple-Symbol Noncoherent Decoding of Uncoded and Convolutionally Codes Continous Phase Modulation
Recently, a method for combined noncoherent detection and decoding of trellis-codes (noncoherent coded modulation) has been proposed, which can practically approach the performance of coherent detection.
multiple-symbol continous phase modulation coding ↗
T-PPM: A Novel Modulation Scheme for Optical Communications Impaired by Pulsewidth Inaccuracies
This paper presents the analysis of a trellis-based pulse position modulation (T-PPM) scheme for photon communications with non-rectangular pulses.
optical pulse position modulation (PPM) trellis-ba↗
Test Strategies for NASAs 3-D Stack Multichip Module Space Flight Computer
Advanced packaging technologies such as 3D chip stacking, multichip modules (MCMs), and 3D stacks of MCMs provide opportunities for significant reductions in system mass, volume and power.
Test Strategies Space Flight Computer 3D chip stac↗
A 1-Gigabit Memory System on a multi-Chip Module for Space Applications
Current spaceborne applications desire compact, low weight, and high capacity data storage systems along with the additional requirement of radiation tolerance. This paper discusses a memory system on a multi-chip module (MCM) that is designed for space applications.
data storage data storage systems multi-chip modul↗
Waveguide Transfer Switch Driver Multichip Module
This paper summarizes and reports a radiation hardened Spacecraft Integrated Circuit Technology to be flown on board the Cassini spacecraft in 1997 A.D. The Multichip Module has been designed to have an operating life of fifeteen (15) years with appropriate derating guidelines for high reliability.
integrated circuits Cassini multichip module space↗
Compact Multimedia Systems in Multi-chip Module Technology
This tutorial paper shows advanced multimedia system designs based on multi-chip module (MCM) technologies that provide essential computing, compression, communication, and storage capabilities for various large scale information highway applications.!.
Multi-Chip Module Technology↗