Dragonfly Phase B Mission Design

The Dragonfly mission is designed to conduct a scientific survey of Titan with a relocatable lander and is enabled by a high-energy Delta-V Earth Gravity Assist (ΔV-EGA3+) trajectory. The trajectory utilizes a deep space maneuver, an Earth gravity assist, and a sequence of trajectory correction maneuvers, culminating in an entry, descent, and landing sequence. Several unique challenges exist when designing this trajectory, including accommodating a Multi-Mission Radioisotope Thermoelectric Generator and selecting a Titan atmospheric entry state. The current trajectory as of the Preliminary Design Review is described in detail, along with the trades and constraints that have influenced its design.