Contents

• Contents
• List of Figures
• List of Tables
• 1. Introduction
• 2. Executive Summary
• 3. Project Architecture
  • 3.1 Work Breakdown Structure
  • 3.2 Project Schedule
• 4. Mission Design
  • 4.1 Mission Events Sequence
  • 4.2 Trajectory
• 5. Design Requirements to Support Surface Lander
  • 5.1 Lander Targeting and Deployment
  • 5.2 Link Geometry
    • 5.2.1 Between Asterius and Earth during Orbit
    • 5.2.2 Between SOM and Earth after Landing
    • 5.2.3 Between WISP and SOM
• 6. Spacecraft Modules
  • 6.1 Titan IV/Centaur Launch Vehicle
  • 6.2 The Orbital Operations Module (OOM)
  • 6.3 The Surface Operations Module (SOM)
  • 6.4 The Water/Ice Scientific Probe (WISP)
• 7. Spacecraft Subsystems
  • 7.1 Structural Subsystem
    • 7.1.1 OOM Structure
      • 7.1.1.1 Engine Mounting.
      • 7.1.1.2 Propulsion Support Assembly
      • 7.1.1.3 Lander Adapter
      • 7.1.1.4 Bipropellant Tank Assembly
      • 7.1.1.5 Launch Vehicle Adapter
      • 7.1.1.6 Toroidal Fuel Tank
      • 7.1.1.7 Materials
      • 7.1.1.8 Calculations
      • 7.1.1.9 Launch Vehicle Adapter Calculations
    • 7.1.2 SOM structures
      • 7.1.2.1 Lander Skeletal Structure
      • 7.1.2.2 Landing Gear
      • 7.1.2.3 Teardrop-Shaped Tank
      • 7.1.2.4 Antennas and Mounts
      • 7.1.2.5 Minor Structures
      • 7.1.2.6 Materials
      • 7.1.2.7 Calculations
    • 7.1.3 WISP Structure
      • 7.1.3.1 Materials
  • 7.2 Attitude Control and Sensing Subsystem
    • 7.2.1 ACS Options
    • 7.2.2 Attitude Determination
    • 7.2.3 Attitude Control
  • 7.3 Propulsion Subsystem
    • 7.3.1 Mass Budget
    • 7.3.2 Propellant budget
    • 7.3.3 Deep Space Propulsion System
    • 7.3.4 Attitude Control Propulsion System
    • 7.3.5 Landing Propulsion System
  • 7.4 Communications Subsystem
    • 7.4.1 Assumptions and Calculations
    • 7.4.2 Communication Between SOM and Earth via HGA
    • 7.4.3 Communication Between SOM and Earth via LGA
    • 7.4.4 Communication Between WISP and SOM
  • 7.5 Command and Data Handling Subsystem
    • 7.5.1 SOM Hardware
      • 7.5.1.1 Interfaces to Other Components
      • 7.5.1.2 Housekeeping Devices
      • 7.5.1.3 On-Board Computers
      • 7.5.1.4 Memory Storage Device
      • 7.5.1.5 Timer
    • 7.5.2 WISP Hardware
    • 7.5.3 Operation
  • 7.6 Power Subsystem
    • 7.6.1 Power Budget
    • 7.6.2 Power Elements
      • 7.6.2.1 Radioisotope Thermoelectric Generators (RTGs)
      • 7.6.2.2 Dynamic Isotope Power Systems (DIPS)
    • 7.6.3 The DIPS
    • 7.6.4 The RTG
  • 7.7 Thermal Control Subsystem
    • 7.7.1 Spacecraft Thermal Balance
    • 7.7.2 WISP Thermal Considerations
  • 7.8 Scientific Instruments
    • 7.8.1 Magnetometer
    • 7.8.2 Ice Radar
    • 7.8.3 Energetic Particle Detector
    • 7.8.4 Dust Detector
    • 7.8.5 Metastable Ionization Detector
    • 7.8.6 EuropaCam
    • 7.8.7 Acoustic Sounders/Sensors
    • 7.8.8 Seismic Accelerometers
    • 7.8.9 Temperature & Pressure Gauges
    • 7.8.10 MicroWISPCam
    • 7.8.11 Electrodes
    • 7.8.12 Alpha Proton Xray Spectrometer (APXS)
• 8. Operations and Ground Data System Design
• 9. Mission Life Cycle Cost
• 10. Technology
• 11. Outstanding Issue(s)
• 12. Conclusions
• Bibliography