NTRS - NASA Technical Reports Server

Back to Results
Operational Experiences in Planning and Reconstructing Aqua Inclination ManeuversAs the lead satellite in NASA's growing Earth Observing System (EOS) PM constellation, it is increasingly critical that Aqua maintain its various orbit requirements. The two of interest for this paper are maintaining an orbit inclination that provides for a consistent mean local time and a semi-major Axis (SMA) that allows for ground track repeatability. Maneuvers to adjust the orbit inclination involve several flight dynamics constraints and complexities which make planning such maneuvers challenging. In particular, coupling between the orbital and attitude degrees of freedom lead to changes in SMA when changes in inclination are effected. A long term mission mean local time trend analysis was performed in order to determine the size and placement of the required inclination maneuvers. Following this analysis, detailed modeling of each burn and its Various segments was performed to determine its effects on the immediate orbit state. Data gathered from an inclination slew test of the spacecraft and first inclination maneuver uncovered discrepancies in the modeling method that were investigated and resolved. The new modeling techniques were applied and validated during the second spacecraft inclination maneuver. These improvements should position Aqua to successfully complete a series of inclination maneuvers in the fall of 2004. The following paper presents the events and results related
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Rand, David
(AI Solutions, Inc. Lanham, MD, United States)
Reilly, Jacqueline
(AI Solutions, Inc. Lanham, MD, United States)
Schiff, Conrad
(AI Solutions, Inc. Lanham, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Meeting Information
Meeting: 18th International Symposium on Space Flight Dynamics
Location: Munich
Country: Germany
Start Date: October 11, 2004
End Date: October 15, 2004
Distribution Limits
Work of the US Gov. Public Use Permitted.
No Preview Available