JWST Heat Switch

James Webb Space Telescope

SDL designed the JWST thermal switch to provide a highly conductive path between JWST instruments and the cooling radiators while also enabling the disconnection of these instruments from the radiators during on-orbit events as necessary. The switch was designed to be straightforward and easy to manufacture and assemble while meeting stringent conductance requirements. The qualification switches were tested and proven in accordance with NASA’s Technology Readiness Level (TRL) 6.