JWST Functional Flow Diagrams and Schematic Block Diagrams

Size: px

Start display at page:

Download "JWST Functional Flow Diagrams and Schematic Block Diagrams"

Penelope McKinney
5 years ago
Views:

1 CC532 Collaborate System Design Fundamentals of Systems Engineering W6, Spring, 2012 KAIST JWST Functional Flow Diagrams and Schematic Block Diagrams 1

2 JWST Operational s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations 2

3 JWST s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations Collect, Process Store Engineering Data Downlink Engineering Data Evaluate and Trend Engineering Data Plan Engineering Activities Uplink Commands Process, Store Distribute Commands Determine Orbit Maintain Temperatures Protect Components from Environments 3

4 JWST s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations Separate from LV Determine Orbit Null Rates SA and Acquire Sun HGA Perform MCC1 Aft Forward Sunshield OTE Tower Sunshield SMSS PM Wings Collect, Process Store Engineering Data Downlink Engineering Data Evaluate and Trend Engineering Data Plan Engineering Activities Uplink Commands Process, Store Distribute Commands Manage Momentum Point the Maintain Temperatures Protect Components from Environments 4

5 JWST s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations OTE WF Alignment and Phasing ISIM and SI Initialization and Calibration Determine Orbit Perform MCC2 Perform MCC2 Perform L2 Orbit Insertion Collect, Process Store Engineering Data Downlink Engineering Data Evaluate and Trend Engineering Data Plan Engineering Activities Uplink Commands Process, Store Distribute Commands Manage Momentum Point the Acquire Targets Manage Vibration Maintain Fine Pointing Small / Medium Angle Maneuver Maintain Temperatures Protect Components from Environments 5

6 JWST s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations Plan Science Operations Uplink Observation Plan Generate Observation Plan Cmds Perform Science Observations Perform SI Calibrations Perform WFSC Process / Store Science Data Downlink Science Data Ground Process Science Data Determine Orbit Perform Orbit Maintenance Collect, Process Store Engineering Data Downlink Engineering Data Evaluate and Trend Engineering Data Plan Engineering Activities Uplink Commands Process, Store Distribute Commands Manage Momentum Slew the Acquire Targets Manage Vibration Maintain Fine Pointing Small / Medium Angle Maneuver Maintain Temperatures Protect Components from Environments 6

NASA Integrated Services Network (NISN) JWST Communications System Architecture L2 Point L2 Lissajous Orbit L2 Transfer Trajectory Segment The launch vehicle

and the observatory autonomously executes these plans STScI Science Operations Center (SOC) NASA Provided Communication Asset for Early Orbit Launch Segment

7 NASA Integrated Services Network (NISN) JWST Communications System Architecture L2 Point L2 Lissajous Orbit L2 Transfer Trajectory Segment The launch vehicle injects observatory into an L2 transfer trajectory The observatory operates at L2 point for 5 years with a goal of 10 years, providing imagery and spectroscopy in the Near and Mid Infrared wavebands. The Ground Segment receives downloads of science data and sends command uploads during daily 4 hour contacts Ground Segment uploads plans to the ~once a week and the observatory autonomously executes these plans STScI Science Operations Center (SOC) NASA Provided Communication Asset for Early Orbit Launch Segment Madrid Goldstone Canberra JPL Deep Space Network (DSN) Ground Segment GSFC Flight Dynamics Facility (FDF) Simulators (OTB/STS) Flight Operations (FOS) Data Management (DMS) Operations Script (OSS) Project Reference DB (PRDS) Wavefront Sensing Control Exec (WFSC Exec) Proposal Planning (PPS) 7

8 Schematic Block Diagram Region 1 Region 2 Region 3 Radiator Heat Switches Contn Ctrl Htrs Cryo Temp Sensors NIRSpec FGS NIRCam MIRI IRSU NIRSpec FPE/ICE/ MCE FGS Guiders FPE/ICE FGS TF FPE/ICE/ TCE NIRCam FPEs/ICE MIRI FPE/ICE Cooling Lines ISIM ISIM Command Data Handling CCE-PC CCE-JT Compressor Assembly Solid State Recoder Command Telemetry Processor Orientation Drive Electronics with Resolver Coarse Sun Sensors (x4) CDH S-Band Transponder Ka-Band Modulator Power Control Unit Switches Ka-Band TWTA Solar Array Regulators Telemetry Acquisition Unit Motor Switching Relay Omni HGA Solar Array (3 panels) 40 Ah NiH2 Battery Analog/ Bilevel COMM EPS FSM Act Tertiary Mirror Secondary Mirror MIRI FPE Primary Mirror SMSS Act Hexapod (6 DOF) Hexapod (7 DOF) x18 DIT CE OTE Cold Junction Box Wing Acts Latch Acts (x8) Actuator Drive Unit Region 3 Tower Actuators Fine Sun Sensors Sunshield Sunshield Act (x6) Solar Array Act Inertial Reference Unit (1) Wheel Drive Electronics (x6) High Gain Antenna Act Star Trackers (x3) ACS Valve Drive Electronics Reaction Wheels (x6) Propulsion (Bi-Prop) MRE-4 STMs (x8) Secondary Combustion Augmented Thrusters (x4) Legends: photons S/C-ISIM1553B-SI Spacewire RS422 Discrete-pt to pt LVDS Primary Power S/C 1553B-S ISIM 1553B-I Mechanical I/F Region 1-(within Si/OA) Region 2-(within IEC) Region 3-(within spacecraft bus) 8

9 JWST s and System Functional Breakdown Primary Secondary Mirror Pre- Trajectory Correction Cruise Operations Collect, Process Store Engineering Data Downlink Engineering Data Evaluate and Trend Engineering Data Plan Engineering Activities Uplink Commands Process, Store Distribute Commands Manage Momentum And Point the Determine Orbit Perform Orbit Maintenance Maintain Temperatures Protect Components from Environments 9

System Architecture Module Exploration Systems Engineering, version 1.0

System Architecture Module Exploration Systems Engineering, version 1.0 Exploration Systems Engineering: System Architecture Module Module Purpose: System Architecture Place system architecture development