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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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Improved Operations Capabilities to Reduce the Risk of Command-Related Error
No abstract available
Robust, Radiation Tolerant Command and Data Handling and Power System Electronics from NASA Goddard Space Flight Center
The Goddard Modular Smallsat Architecture (GMSA) is developed at NASA Goddard Space Flight Center (GSFC) to address future reliability along with minimizing cost and schedule challenges for NASA Cubesat and Smallsat missions.
ISS Science Payload Command & Data Handling
For decades, the International Space Station (ISS) has provided a distinctive platform in low Earth orbit for experimental research. In support of this platform is a family of avionics systems that enables reliable data distribution of the many science payloads installed, and future internal and external payloads. This poster provides an update to the ISS avionics hardware system architecture, including design change successes, test bed architecture, and performance upgrades in the operation of all ISS avionics. We conclude with an outlook on future avionics system enhancements required to support additional modules and payload expansions taking place on the ISS, and how these avionics systems translate to a lunar gateway.
Command of three-dimensional solitary waves via photopatterning
Multidimensional solitons are prevalent in numerous research fields. In orientationally ordered soft matter system, three-dimensional director solitons exemplify the localized distortion of molecular orientation. However, their precise manipulation remains challenging due to unpredictable and uncontrolled generation. Here, we utilize preimposed programmable photopatterning in nematics to control the kinetics of director solitons. This enables both unidirectional and bidirectional generation at specific locations and times, confinement within micron-scaled patterns of diverse shapes, and directed propagation along predefined trajectories. A focused dynamical model provides insight into the origins of these solitons and aligns closely with experimental observations, underscoring the pivotal role of anchoring conditions in soliton manipulation. Our findings pave the way for diverse fundamental research avenues and promising applications, including microcargo transportation and optical information processing.
SURVEYOR SPACECRAFT COMMAND AND DATA HANDLING GSE
Description of ground support systems for the surveyor lunar-landing spacecraft
Guidance of space vehicles by radio measurements and command. appendix a - correcting velocity components. appendix b - magnitude of the maneuver. appendix c - outline of the method of computing the orbit.
Correction of space trajectories by small midcourse maneuvers governed by impulse which is computed on the ground from radio measurements and sent by radio to the space probe
Ring counter may be advanced or retarded by command signal
A power logic circuit, with bidirectional capability, is used to drive small loads in planned sequence. This is designed in the form of a shift register, with a reversible ring counter.
Apollo logistics support systems molab studies- task report on mission command and control technical report, 1 jul. 1964 - 1 sep. 1964
Stabilization of Lunar Mobile Laboratory VII
Apollo logistic support systems nolab studies- mission command and control interim report
Vehicle stability, steering, and control system characteristics for Apollo logistic support of lunar mobile laboratory /Molab/
Command system study for the operation and control of unmanned scientific satellites. task i- unified tracking/command/telemetry at lunar distances first quarterly progress report, 30 jun. - 30 sep. 1964
Control of unmanned scientific satellites and unified tracking/command/telemetry at lunar distances
Apollo extension system lsv studies. mission command and control
Steering system and control circuit for Lunar Surface Vehicle /LSV/ - Apollo project
On the application of extreme-value statistics to command oriented problems
Extreme value theory for estimating statistical parameters of spacecraft communication systems
Command angle torquing of gyros in the Apollo Guidance and Navigation System.
Apollo Guidance and Navigation System positioning by electrically torquing gyros, discussing error sources
Simplified processing of star tracker commands for satellite attitude control.
Star tracker error signal processor for onboard current satellite attitude control over wide range of gimbal angles
Spacecraft telemetry and command
Multiple-mission telemetry system - bit-sync lock detector evaluation