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Transfer and rendez-vous strategies for the deployment and the servicing of an inhabited space station at Earth-Moon L2

Lizy-Destrez, Stéphanie and Le Bihan, Bastien and Iranmanesh, Mohammad Transfer and rendez-vous strategies for the deployment and the servicing of an inhabited space station at Earth-Moon L2. (2014) In: The 65th International Astronautical Congress, IAC 2014, 29 September 2014 - 3 October 2014 (Toronto, Canada). (Unpublished)

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Official URL: http://www.proceedings.com/25520.html

Abstract

The next step for human exploration in the solar system could be the deployment of an inhabited station at Earth-Moon Libration points (EML), as a gateway for further destinations such as the Moon (lunar surface settlement), Mars or asteroids, according to International Space Exploration Coordination Group (ISECG) roadmap [1] and several recent publications [5]. In this context, this paper examines how to design a low cost mission, using the natural dynamics for Station integration, crew rotations, cargo delivery and disposal. Preliminary studies lead us to select a Halo orbit around EML2 to locate the space station. Then, the entire trajectory, from the selection of the departure Low Earth Obit to the rendez-vous strategy in EML2, was analyzed with several possible transfer types (direct, indirect, lunar flyby or weak stability boundary). Actually, optimization criteria strongly depend on the mission phase. For instance, when crew transit is considered, mission duration has to be minimized, while in the case of cargo transportation, we rather seek to optimize the global delta-v. This paper presents the results (in term of duration and cost) obtained for the two strategies we selected: lunar flybys for the crew and weak stability boundaries trajectories for cargo. We carefully considered the constraints for rendez-vous in EML2 and evaluated their impact on the performances. Moreover, we assessed the impacts of the model selection (ephemeris, four bodies versus restricted circular three bodies problem...). The main contribution of this project lies in the global optimization of the entire mission from LEO to EML2 and return with regards to two criteria (mission duration and delta-v), with a focus on the rendez-vous feasibility in EML2.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited By: Lizy-Destrez Stéphanie
Deposited On:01 Dec 2014 15:16

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