Mars transfer trajectories using the space elevator
- Paper number
IAC-09.D4.2.7
- Author
Mr. Kilian A. Engel, International Space University (ISU), Germany
- Year
2009
- Abstract
Assuming that the tall technical challenges of constructing a space elevator can be overcome, the technology would revolutionize space access. Not only does it open up earth orbit to use at an unprecedented scale, it also has the potential to greatly ease access to large parts of the solar system. The main advantage is the provision of earth departure velocity without the use of conventional propulsion by using the elevator as a sling for the departing spacecraft. Since Mars will likely remain one of the most important targets of exploration, it is interesting to investigate how the space elevator can be used for Mars transfer. The paper summarizes and quantitatively characterizes the options that a space elevator offers for Mars transfer trajectories. First the general differences between conventional and elevator-launched trajectories and their implications are described. Then transfer trajectory options are quantitatively characterized in terms of deltaV, transfer time, and launch opportunities. Elevator-specific constraints, mainly associated with the fixed orbital plane of elevator-launched trajectories, are discussed, and it is shown at what cost of additional deltaV these constraints may be relaxed. Finally, elevator-based Mars transfer options are compared against conventional transfer options, and the advantages and disadvantages are discussed.
- Abstract document
- Manuscript document
(absent)