Libration Orbit Eclipse Avoidance Maneuver Study for the James Webb Space Telescope Mission

Yu, Wayne ; Richon, Karen

关键词: AVOIDANCE;    JAMES WEBB SPACE TELESCOPE;    LAUNCH WINDOWS;    LIBRATION;    LUNAR ECLIPSES;    SOLAR ECLIPSES;    SPACECRAFT MANEUVERS;    SPACECRAFT TRAJECTORIES;    TRAJECTORY PLANNING;   

RP-ID  :  GSFC-E-DAA-TN71102

学科分类：天文学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Mission analysis of libration orbit trajectories at Sun-Earth/Moon L2 typically includes predictions of lunar and Earth eclipses during the mission life-time. The NASA James Webb Space Telescope (JWST) trajectory, by design, avoids these eclipses by pruning its launch window. In an off-nominal scenario where an eclipse is predicted, a maneuver strategy is needed. In this paper, trade studies are examined for JWST that characterize the burn magnitude, location, and epochs of multiple maneuver plans to avoid an eclipse. The results enable analysts to explore the space of feasible maneuver strategies during routine operations.