The website enables the capability to search multiple, internal NASA and external databases for small spacecraft parts, technologies and conference proceedings. General Website Disclaimer: The NASA Small Spacecraft Systems Virtual Institute provides the Small Satellite Information Search website for the benefit of NASA and the Small Satellite community. The resources ratings reflected on this website do not necessarily represent those of NASA, and do not convey any NASA approval, endorsement or recommendations.

User Rating Disclaimer: We encourage and welcome public user ratings of the resources provided on the Small Satellite Reliability Initiative (SSRI) Knowledge Base Tool, including, but not limited to: small satellite articles, books, software tools, papers, standards, and websites. Note that FTA is not limited to mechanical systems, so these resources often include electronic and software systems however, the general approach is consistent and the examples are still useful for mechanical FTA. Resources in this topic area are primarily articles that include FTA case studies and software tools for FTA. FTA is an intuitive, graphical approach for reliability analysis of these designs. Deployable mechanisms are common in smallsats, and are often custom built for a particular payload. The logic and events captured in the fault tree can be used to predict the fault probability and identify efficient approaches (e.g., modified designs or operational plans) to reduce the overall probability of a fault. As opposed to a failure mode and effects analysis (FMEA), an FTA is a top-down approach which starts with the higher level system fault and expands downward to identify events or combinations of events that would result in the fault. Fault tree analyses provide a graphical, logical representation of the reliability of a system against individual faults. This topic area covers fault tree analysis (FTA) of spacecraft mechanisms. MCF > Detailed Design and Analysis > Mechanical and Thermal > Mechanical Fault Tree Analysis Scope and Description

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