Optimizing science return from Titan aerial explorers

This paper explores the scientific challenges of post-Cassini exploration of Titan, Saturn's giant, hazy moon. In particular, the scientific objectives are addressed, and the vehicle types that might be most appropriate are considered, paying particular attention to the energy required for mobility, for acquiring data, and downlinking it to Earth, and to the rate at which science data can be acquired. While many mission types are possible, a helicopter mission, flying only 10% of the time, may offer the best overall scientific return.