James Webb Space Telescope Initial On-Orbit Thermal Performance
MetadataShow full item record
The James Webb Space Telescope (JWST) is expected to be the premier space based astronomical observatory when it reaches its intended operational temperatures in the Spring of 2022. The cryogenic telescope portion features a deployed 6.5 meter primary mirror, backplane structure, and instrument complement passively cooled below 50Kelvin. Cooling to these temperatures is enabled by an L2 orbit, a 22x10 meter deployed sunshield, and numerous thermal isolation schemes. Proper observatory thermal performance will allow the scientific instruments to observe exoplanet formation, evolution of galaxies, and characteristics of the early universe. Prior to launch, extensive thermal testing was performed on a thermal simulator and the flight telescope to characterize on-orbit thermal performance including the ~120 day post-launch cooldown. This paper focuses on early JWST flight thermal performance, expected cryo-stable temperatures, and comparisons to test results and analytical predictions.
Showing items related by title, author, creator and subject.
An Innovative Very Low Thermal Power Waste Heat Recovery System for Thermal Control of Deep Space Missions - A Thermal Flask in Space Bhandari, Pradeep (45th International Conference on Environmental Systems, 2015-07-12)Future missions to deep space, such as those to the outer planets (Jupiter, Saturn, etc.), which would rely on solar photovoltaic power, would need extremely large solar arrays to produce sufficient power for their operations ...
Thermal Performance Characterization of TED-Enhanced Thermal Straps and Thermal Links with Oscillating Heat Pipes Wilson, Mike; Hengeveld, Derek; Lockyer, Steven (48th International Conference on Environmental Systems, 2018-07-08)Thermal straps provide a method of dissipating heat to a thermal sink in the challenging space environment. A novel device, the flexible and enhanced active thermal strap, has the potential to deal with high heat flux ...
Influence of Orbit and Thermal Design Parameters on the Temperature Behaviour of CubeSats - Implications for Thermal Analysis and Thermal Hardware Demands Hager, Philipp; Janzer, Katja (2020 International Conference on Environmental Systems, 2020-07-31)In this paper we investigate the impact of different parameters on the thermal behavior of common CubeSats. Thermal aspects are often treated as an afterthought in the design process of CubeSats. In the past, CubeSats were ...