Fast Attitude Maneuvers for the Lunar Reconnaissance Orbiter

Karpenko, Mark ; Lippman, Travis ; Ross, I Michael ; Halverson, Julie K ; McClanahan, Timothy ; Barker, Michael ; Mazarico, Erwan ; Besser, Rebecca ; Dennehy, Cornelius J ; VanZwieten, Tannen(NASA Kennedy Space Center, Cocoa Beach, FL, United States)

关键词: ALGORITHMS;    ATTITUDE CONTROL;    FLIGHT TESTS;    LASER ALTIMETERS;    LUNAR ORBITER;    LUNAR RECONNAISSANCE ORBITER;    ORBITAL MANEUVERS;    TURBOGENERATORS;    ATTITUDE (INCLINATION);    CONTROL SYSTEMS DESIGN;    DATA ACQUISITION;    OCCULTATION;    SEQUENTIAL CONTROL;    SPACECRAFT MOTION;    TELEMETRY;   

RP-ID  :  AAS 19-053,GSFC-E-DAA-TN65209

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

This paper describes a new operational capability for fast attitude maneuvering that is being developed for the Lunar Reconnaissance Orbiter (LRO). The LRO hosts seven scientific instruments. For some instruments, it is necessary to per-form large off-nadir slews to collect scientific data. The accessibility of off-nadir science targets has been limited by slew rates and/or occultation, thermal and power constraints along the standard slew path. The new fast maneuver (FastMan) algorithm employs a slew path that autonomously avoids constraint violations while simultaneously minimizing the slew time. The FastMan algo-rithm will open regions of observation that were not previously feasible and improve the overall science return for LRO's extended mission. The design of an example fast maneuver for LRO's Lunar Orbiter Laser Altimeter that reduc-es the slew time by nearly 40% is presented. Pre-flight, ground-test, end-to-end tests are also presented to demonstrate the readiness of FastMan. This pioneer-ing work is extensible and has potential to improve the science data collection return of other NASA spacecraft, especially those observatories in extended mission phases where new applications are proposed to expand their utility.