Verification of Pointing Constraints for the Dawn Spacecraft

Vanelli, Charles A.; Swenka, Edward R.; Smith, B. A.

doi:10.2514/6.2008-7085

Cited by 8 publications

(2 citation statements)

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“…This remark applies to all subsequent insertions of new events. 6 The interpreter continues executing the AddData code and creates a modeling command saying use DataRate(rate). It encapsulates this command in a new usage event at time S.…”

Section: B Changes To the Remodeling Algorithmmentioning

confidence: 99%

APGEN Scheduling: 15 Years of Experience in Planning Automation

Maldague

Wissler

Lenda

et al. 2014

SpaceOps 2014 Conference

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In this paper, we discuss the scheduling capability of APGEN (Activity Plan Generator), a multi-mission planning application that is part of the NASA AMMOS (Advanced MultiMission Operations System), and how APGEN scheduling evolved over its applications to specific Space Missions. Our analysis identifies two major reasons for the successful application of APGEN scheduling to real problems: an expressive DSL (Domain-Specific Language) for formulating scheduling algorithms, and a well-defined process for enlisting the help of auxiliary modeling tools in providing high-fidelity, system-level simulations of the combined spacecraft and ground support system. Nomenclature ACS= Attitude Control System AI = Artificial Intelligence AL = APGEN Language AMMOS = Advanced Multi-Mission Operations System APGEN = Activity Plan GENerator DI = Deep Impact DPT = Data Priority Table DSL = Domain-Specific Language DSN = Deep-Space Network FPT = Frame Priority Table INSIGHT = Interior Exploration using Seismic Investigations, Geodesy and Heat Transport MER = Mars Exploration Rover MRO = Mars Reconnaissance Orbiter MSL = Mars Science Laboratory PEF = Predicted Event File PEL = Power Equipment List S/C = Spacecraft SASF = Spacecraft Activity Sequence File SEQGEN = SEQuence GENerator TOL = Time-Ordered Listing

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Section: B Changes To the Remodeling Algorithmmentioning

confidence: 99%

APGEN Scheduling: 15 Years of Experience in Planning Automation

Maldague

Wissler

Lenda

et al. 2014

SpaceOps 2014 Conference

View full text Add to dashboard Cite

show abstract

“…While using IPS thrusting, the one commanded thrust vector fully defines the spacecraft attitude and it is the navigation team's responsibility to ensure the spacecraft attitude, controlled by the designed thrust vector, does not endanger the spacecraft. Dawn's geometric constraints and ACS power steering algorithm are described in Reference [3].…”

Section: Geometric Constraint For Instruments and Thrustersmentioning

confidence: 99%