SEARCH · Search NASA
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.
The high-performance, scalability and miniaturization requirements together with the power, mass and cost constraints mandate the use of commercial-off-the-shelf (COTS) components and standards in the X2000 avionics system architecture for deep-space missions.
This guideline is written to help facilitate adoption of COTS components by space flight projects by elucidating the radiation effects that various types of components are susceptible to, by describing potential mitigations, and by recommending component selection strategies that minimize radiation risks.
Limitations of a traditional approach to screening and qualification of COTS capacitors for space applications that is based on burn-in and life test requirements described in the relevant military specifications are analyzed. An alternative approach that is originated from analysis of highly accelerated life testing (HALT) of capacitors susceptible to wear-out failures and allows for assessments of the risks of failure during the mission is suggested. Examples include results of reliability testing of advanced BME ceramic capacitors, polymer tantalum capacitors and multianode manganese oxide tantalum capacitors.
The NASA Johnson Space Center (JSC) and other partners have developed and verified a software suite intended to allow users with little-to-no experience with star trackers/attitude estimation to assemble, deploy, calibrate, and operate a star tracker using COTS cameras and computers. This software is open source, written in Python 3, and has been demonstrated across a variety of computers, operating systems, and cameras. The first release of the software is now available to download at the link below. We’re excited to see what you do with it! Please contact us for more information.
Building on previous collaborations, maxon and the Jet Propulsion Laboratory (JPL) established a partnership to modify Ø20mm & Ø32mm Commerical-Off-The-Shelf (COTS) BrushLess Direct Current (BLDC) flat motors and a Ø22mm planetary gearbox.The commercial design was modified to meet the requirements for the Mars2020 rover, a Class B [1], Martian surface environment, interplanetary mission, whilst maintain as much of the industrial heritage as possible. Despite numerous problems encountered during the development, these were all overcome and qualification of the design and acceptance testing for the 10 Flight Model (FM) actuators that were installed on the Mars2020 rover was completed on-time for the rover assembly schedule.
This is a 12-minute presentation that highlights many of the actual experiential elements from the use COTS in space, covering a time span of over 20 years.
The primary objective of this study was to simulate lunar thermal environments to qualify a modified Commercial-Off-The-Shelf (COTS) camera for potential flight applications. A comprehensive testing regimen was developed, including both vacuum and thermal vacuum testing. The tests subjected the camera to temperatures corresponding to expected extrema, and thermal performance was recorded throughout the process. The testing demonstrated that both the camera and its thermal protection systems were able to maintain operational functionality under most of the simulated conditions. The results of the testing indicate that the implemented thermal protection system is effective for the expected lunar environments. Despite the decrease in operational time in comparison with terrestrial usage, the camera's overall performance supports its suitability for use in both flight and lunar missions.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Fault-tolerant systems are traditionally divided into fault containment regions and custom logic is added to ensure the effects of a fault within a containment region would not propagate to the other regions.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The use of flight hardware breadboards to construct an avionics subsystem testbed has been used on Jet Propulsion Laboratory (JPL) projects very successfully.
Advanced commercial DRAMs are particularly attractive to designers for space applications needing large memory arrays due to resulting savings in mass, volume, and power.
This paper will discuss a proposed methodology intended for qualification of PEMs by NASA.
Explore the source record for details and available documents.