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Dynamics Team Prakhar Mehrotra Inki Choi Kevin Watts Ajay Harish Derek Chan Silas Hilliard

Dynamics Team Prakhar Mehrotra Inki Choi Kevin Watts Ajay Harish Derek Chan Silas Hilliard. Receivables and Deliverables. Receivables from other teams Structural Team: M, K, C for dynamics model Metrology Team: Accuracies & tolerances; Sensor inputs that relates to observability

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Dynamics Team Prakhar Mehrotra Inki Choi Kevin Watts Ajay Harish Derek Chan Silas Hilliard

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  1. Dynamics TeamPrakhar MehrotraInki ChoiKevin WattsAjay HarishDerek ChanSilas Hilliard 1

  2. Receivables and Deliverables • Receivables from other teams • Structural Team: M, K, C for dynamics model • Metrology Team: Accuracies & tolerances; Sensor inputs that relates to observability • Receivables from JPL • Decide how to model disturbance forces • Internal (Reaction wheels) • External (Solar pressure, Drag etc) • More details on S/C configuration • Reaction wheel, Torqrod configuration and specs • Mass model comes from Structure team • Deliverables • Complete dynamic model and modal analysis • Orbital information and effect of disturbance forces • Dynamic responses in time/frequency domain • Controllability and observability of S/C • Sensitivity studies and error budget • Develop framework for determining optimal control 2

  3. Team Objectives and Steps Outlined • TEAM OBJECTIVES • Dynamic modeling (before PDR) • Orbital dynamics (before PDR) • Altitude control (after PDR) • Stability of spacecraft about each axis – x, y and z • Error budget and sensitivity studies • Create framework to design optimal control system • STEPS OUTLINED • Obtain dynamic model • Determine orbital motion • Point mass  Rigid body  Flexible body • Determine attitude dynamics, controllability and observability • Dynamic analysis in time/frequency domain • Control system plan • System block diagrams 3

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