NAMED AFTER THE POLAR EXPLORER CAPTAIN ROBERT FALCON SCOTT AND THE RAPTOR KNOWN FOR EXTRAORDINARY EYESIGHT; THE FALCON PROJECT SEEKS TO PROVIDE UNPRECEDENTED ICY WORLDS MISSION DESIGN CAPABILITY FORGING UNCHARTED TERRITORIES AND FINDING NEW PATHS FOR BOTH SCIENCE AND EXPLORATION. .OBJECTIVE: AUTOMATE THE EXPLORATION OF THE SEARCH SPACE AND THE GENERATION OF END-TO-END OPTIMIZED HIGH-FIDELITY EARTH TO ICY MOON TRAJECTORIES. .MOTIVATION: MULTIPLE FLYBY TRAJECTORIES SUPPORTING ICY WORLDS MISSIONS ARE AMONG HARDEST TO DESIGN IN THE ASTRODYNAMICS FIELD. ACCORDINGLY THEY ARE CURRENTLY OPTIMIZED IN A SEQUENTIAL FASHION ACROSS MANY PHASES. FURTHERMORE THE DISCRETE VARIABLES (E.G. FLYBY BODY NUMBER OF FLYBYS AND MANEUVER TYPE) ARE OFTEN CHOSEN BASED ON AD HOC METHODS. THE CURRENT GENERATION OF SUCH TRAJECTORIES TAKES SEVERAL WEEKS AND TYPICALLY INVOLVES MULTIPLE TEAMS SOFTWARE SUITES AND MANUAL INTERFACES. THEREFORE REFERENCE TRAJECTORIES FOR ICY WORLD MISSION PROPOSALS ARE NOT FULLY INTEGRATED INTO THE OVERALL MISSION AND SPACECRAFT SYSTEMS DESIGN CYCLE. THE RESULT IS OFTEN A MISSION PROPOSAL WITH A FEASIBLE BUT SUBOPTIMAL POINT DESIGN- FOR BOTH THE REFERENCE TRAJECTORY AND THE HIGHLY COUPLED SPACECRAFT SYSTEM AS A WHOLE. AN AUTOMATED APPROACH TO GENERATE OPTIMAL END-TO-END TRAJECTORIES FOR SUCH COMPLEX MISSIONS IS WITHIN REACH; BUT REQUIRES A CAREFUL INTEGRATION OF EMERGING IDEAS METHODS AND EXISTING TOOLS DEVELOPED BY ASTRODYNAMICISTS OVER THE LAST DECADE. .APPROACH: WE WILL 1) DEVELOP A NEW OPEN-SOURCE PATHFINDING TOOL (RAPTOR) TO EFFICIENTLY EXPLORE THE FLYBY TOUR DESIGN SPACE IN LOWFIDELITY 2) OPTIMIZE RESULTING TRAJECTORIES IN HIGH-FIDELITY USING EXISTING SOLVERS AND 3) DEVELOP AN OPEN-SOURCE INTEGRATION TOOL (FALCON) TO AUTOMATE THE INTERFACE EXECUTION AND DESIGN LOOPS OF THE LOW-FIDELITY BROAD SEARCHES AND HIGH-FIDELITY OPTIMIZATIONS. HIGHFIDELITY REFERS TO A DYNAMICAL ACCURACY SUFFICIENT FOR NASA MISSION PROPOSALS (E.G. INTEGRATED FLYBYS N-BODY EPHEMERIS MODEL AND NON-SPHERICAL GRAVITY). THE OBJECTIVE IS ACHIEVABLE BECAUSE THE CRITICAL COMPONENTS OF THE APPROACH HAVE STRONG THEORETICAL AND APPLIED SUPPORT. THE EFFORT WILL EFFICIENTLY INCORPORATE EXISTING CODES CUSTOM BUILT FOR LARGE GLOBAL SEARCHES (E.G. LAMBERT V-INFINITY LEVERAGING AND LOW-THRUST SOLVERS). TWO EXISTING HIGH-FIDELITY SOLVERS WILL BE USED: A) ODYSSEY (DEVELOPED BY THE PI UNDER THE 2012 ASTRODYNAMICS ROSES CALL IMPROVED WITH APL FUNDING IN 2017-2018 BOOTSTRAPPED OTHERWISE); AND B) EMTG. ODYSSEY WAS CUSTOM BUILT FOR MULTIPLE FLYBY TRAJECTORIES AND IS AN ENABLING TECHNOLOGY FOR THE HIGH-FIDELITY DESIGN. EMTG HAS RECENTLY BEEN UPDATED TO INCLUDE HIGH-FIDELITY CAPABILITIES. THIS PROJECT WILL VALIDATE AND POTENTIALLY IMPROVE SUCH CAPABILITIES IN BOTH SOLVERS. DEVELOPMENT OF THE PROCESS AUTOMATION SOFTWARE IS AN IMPORTANT NEW CONTRIBUTION. MODERN SOFTWARE PRACTICES WILL ENABLE CODE LONGEVITY MAINTAINABILITY AND POTENTIAL FOR COMMUNITY-DRIVEN DEVELOPMENT. .RELEVANCE: THE PROPOSED WORK IS A DIRECT RESPONSE TO THE SOLICITATION AS OUR PLAN SUPPORTS THE FORMULATION MATURATION AND VALIDATION OF PROMISING ASTRODYNAMICS ANALYSIS TOOLS. SPECIFICALLY EXISTING BROAD SEARCH TOOLS WILL BE MATURED AND NEW ONES WILL BE FORMULATED. THE SEARCH TOOLS AND THE RECENTLY INNOVATED ODYSSEY AND EMTG TOOLS WILL BE CROSS-VALIDATED. THE RESULTING CAPABILITIES AND AUTOMATING THE DESIGN PROCESS WILL REDUCE POTENTIALLY BY MULTIPLE ORDERS OF MAGNITUDE THE LABOR AND TIME REQUIRED TO PRODUCE A PROPOSAL-QUALITY ICY WORLD REFERENCE TRAJECTORY. .TEAM: THE TEAM CONSISTS OF RESEARCHERS WITH DECADES OF COMBINED ICY WORLD MISSION DESIGN EXPERIENCE FROM FOUR INSTITUTES: UNIVERSITY OF TEXAS AT AUSTIN (LEAD) JOHNS HOPKINS UNIVERSITY/APPLIED PHYSICS LABORATORY NASA GODDARD SPACE FLIGHT CENTER AND NABLA ZERO LABS. THE TEAM WILL BE SUPPORTED IN PART BY IN-KIND CONTRIBUTIONS LEADING TO A HIGH VALUE PROPOSITION FOR THE NASA ROSES PROGRAM. .