TASTE of Europe's JUICE Mission: Tradespace Analysis for Spacecraft Technical Evaluation (TASTE) of ESA's JUpiter ICy moons Explorer (JUICE)

摘要

The European Space Agency (ESA) in May 2012 selected the JUICE (JUpiter ICy moons Explorer) mission as the first cornerstone large (L-class) mission within the Cosmic Vision Program 2015-25. The primary scientific objectives of the JUICE Mission carrying onboard the spacecraft ten state-of-the-art instruments are (1) Explore the habitable zone of the Galilean moons, Ganymede, Europa and Callisto and (2) Explore the Jupiter system as an archetype for gas giants. The JUICE Orbiter Mission will provide a comprehensive investigation of the icy shell, subsurface ocean and deep interior of the Solar System's largest moon Ganymede. JUICE spacecraft is based on a structure featuring a cone on which a central cylinder is mounted that hosts two propellant tanks, six shear walls and four lighten external walls. The complex trajectory of the eleven-year JUICE mission presents design challenges in radiation environment, power availability, propulsion, thermal aspects and navigation and autonomy. The Design Value Mapping (DVM) method provides a means to assess the design concepts ability to fulfill stakeholder needs, allowing decision makers to focus on key utility drivers and to identify value expectations that are potentially difficult to drive. The Multi-Attribute Tradespace Exploration (MATE), developed at MIT combines two techniques used in complex technical design and decision making: Multi-Attribute Utility Theory (MAUT) and Tradespace Exploration (TSE). This paper presents Tradespace Analysis for Spacecraft Technical Evaluation (TASTE) of ESA's JUpiter ICy moons Explorer (JUICE) through value-driven design, tradespace exploration model and visualization. An Epoch-Era Analysis (EEA) that provides a dynamic perspective of the JUICE Mission to enable evaluation of value robustness across time periods such as interplanetary cruise, scientific exploration of the Jovian system with changing contexts and value expectations is also presented through select design evaluations.