Electrical/Electronics

Architecture Framework for Fault Management Assessment and Design

Marshall Space Flight Center, Alabama Modern spacecraft, aircraft, and surface vehicles support complex science missions in harsh environments. These spacecraft and vehicles provide diverse functionality that is deployed on increasingly complex and heterogeneous hardware and mechanical systems, with stringent dependability requirements.

Posted in: Briefs, Electronics & Computers, Electronics & Computers, Software, Failure analysis, Architecture, Reliability, Spacecraft

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Spacecraft Parameter Database Tool

Goddard Space Flight Center, Greenbelt, Maryland The GOES-R Program has requirements to maintain knowledge of the GOES-R satellite onboard memory contents, including managing general satellite operations tables; processor memory dumps for memory verification; creating command loads, memory (table) loads, and command sequences to operate the satellite; verifying stored command and memory (table) loads; and to provide for operator-initiated memory dumps from satellite processors. The principal limitation is the tie to specific spacecraft architecture.

Posted in: Briefs, Electronics & Computers, Electronics & Computers, Software, Computer software and hardware, Data management, Spacecraft

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Eliminating the Need for Payload-Specific Coupled Loads Analyses Without Mission Risk

Marshall Space Flight Center, Alabama Amore efficient structural verification process for small satellites has been demonstrated. This new process eliminates the need for payload-specific coupled loads analysis (CLA) and simplifies structural testing while not increasing mission risk. The process entails the following:

Posted in: Briefs, Electronics & Computers, Electronics & Computers, Software, Failure modes and effects analysis, Safety testing and procedures, Satellites

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Moon Tours Android

NASA’s Jet Propulsion Laboratory, Pasadena, California This Android app provides a native interface to the Lunar Mapping and Modeling Portal’s (LMMP) lunar data archive and analysis tools. It complements the iOS app previously released, incorporating a very similar feature set. Both apps contain a subset of the functionality available in the desktop/Web version. Compared to the iOS version of the LMMP, the Android version provides the additional tools necessary to perform elevation analysis and perimeter/area measurements.

Posted in: Briefs, TSP, Electronics & Computers, Electronics & Computers, Software, Computer software and hardware, Imaging and visualization, Historical reference

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Full-Wave Matching Circuit Optimization Shortens Design Iterations

Full-wave matching circuit optimization (FW-MCO) is a new technology introduced by Remcom, which combines full wave 3D EM simulation and circuit optimization to solve an age-old RF problem:determining which component values provide the desired match for a given matching network layout.

Posted in: White Papers, Communications, Electronics, Electronics & Computers, Electronics & Computers, Software

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Full RF Signal Chains from 0 Hz to 110 GHz

Analog Devices (ADI) has expanded its RF capabilities in the full signal chain, including companion products, in the full bandwidth from 0 Hz to 110 GHz.This white paper provides examples of the wider frequency spectrum covered by ADI, and explains that true DC is important. Off signal chain performance is also critical, and this paper shows how low-noise, high-stability control and power components are important to overall RF signal performance.

Posted in: White Papers, Electronics, Semiconductors & ICs, Data Acquisition, Sensors, Test & Measurement

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Development of a Multi-User Modem for Space Telecommunications

This technology has applications in the cellphone industry. NASA’s Jet Propulsion Laboratory, Pasadena, California Efficient support of planetary surface missions typically requires an orbiting asset that acts as a relay point to/from Earth. Orbital relay passes are normally 5 to 15 minutes in duration over any specific landed site. When multiple landed assets are co-located or near-located in the same coverage circle of a single relay orbiter, their telecom relay support opportunities will overlap. This will be the case with cooperative lander missions, a lander-rover operations pair, distributed intelligent lander missions, and future deployment of multiple equipment components for support of complex sample return or manned operations. In these situations, the capability of simultaneous support to multiple landers is very valuable for mission performance and operations flexibility. This technology work enables simultaneous telecom support to multiple landers (Mars, Titan, Europa), and provides single-radio, multi-mode support to Entry, Descent & Landing (EDL) and emergency operations (e.g., demodulation + Open Loop Recording).

Posted in: Briefs, TSP, Electronics & Computers, Satellite communications, Telecommunications systems, Spacecraft

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