Source: NASA/JPL-Caltech
Published: January 4, 2022

Shown here is the NISAR spacecraft's antenna boom hinge and latching actuator during testing in a clean room at NASA’s Jet Propulsion Laboratory in Southern California.

The spacecraft's radar antenna boom has a four-hinge deployment system that precisely locates  the 12-meter (approximately 39-foot) radar antenna. The testing is intended to confirm functionality of the latching actuator before launch.