Martian Moons eXploration transfer analysis between planar and spatial QSOs around Phobos
- Paper number
IAC-21,C1,5,2,x62928
- Author
Mr. Nishanth Pushparaj, Japan, The Graduate University for Advanced Studies
- Coauthor
Dr. Nicola Baresi, United Kingdom, Surrey Space Centre, University of Surrey
- Coauthor
Dr. Yasuhiro Kawakatsu, Japan, Japan Aerospace Exploration Agency (JAXA)
- Year
2021
- Abstract
Quasi-satellite orbits (QSO) are considered stable retrograde parking orbits around Phobos for JAXA's upcoming robotic sample return mission MMX [1]. During the proximity operations of MMX, the spacecraft inserted in a high altitude QSO will gradually descend to lower altitude QSOs with suitable transfer and station-keeping techniques between different relative QSOs. Preliminary analysis of two-impulsive planar transfers between relative retrograde orbits utilizing the bifurcated QSOs families is studied to estimate the ΔV costs and Time of Flights of the transfers [2]. In spatial transfers, trajectories utilizing the invariant manifolds of unstable 3D-QSOs connecting planar QSOs are studied [3]. However, these intermediate 3D-QSOs are weakly to highly unstable and require additional station-keeping strategies to perform MMX scientific observations [4]. These transfer trajectories have a longer flight time and might require minor correction maneuvers along the transfer paths. In this paper, an orbital maintenance strategy [5] that suppresses and eliminates linear dynamical instability of the unstable 3D-QSOs has been considered for shortlisting feasible 3D-QSOs for high-latitude observations. Differently from the previous works on the QSO transfers [2,3,6], we utilize the initial guesses found through the preliminary results [2,3] that provide two-impulsive transfer $\Delta$V execution points as finite burns and optimize the transfers between relative QSOs around Phobos. Besides, this paper proposes introducing an indirect optimization method that uses the primer vector [7] of the transfer trajectories to investigate whether intermediate maneuver or initial/final coasting times along the trajectories can minimize the total $\Delta$V cost between the transfers. References \small \begin{enumerate} \item Kawakatsu et al, “Mission Definition of Martian Moons eXploration (MMX)”, 70th IAC, Washington DC, USA, 2019. \item Pushparaj et al, “Transfers around Phobos via bifurcated retrograde orbits: Applications to Martian Moons eXploration mission”, Acta Astronautica,180, 70-80, 2021. \item Pushparaj et al, “Transfers around Phobos using invariant manifolds of unstable Quasi-Satellite Orbits”, 71st IAC, CyberSpace Edition, 2020. \item Chen et al, “Effective Stability of Quasi-Satellite Orbits in the Spatial Problem for Phobos Exploration”, Journal of Guidance, Control, and Dynamics, 43 (12), 2309-2320, 2020. \item Nakamiya and Kawakatsu, “Maintenance of Halo Orbits Under the Thrusting Constraints”, Journal of Guidance, Control, and Dynamics, 35 (4), 1224-1229, 2012. \item Canalias et al, “Transfer between planar and three-dimensional Quasi Satellite Orbits in the vicinity of Phobos”, AAS/AIAA Space Flight Mechanics Meeting, Hawaii, USA, 2019. \item Russell, “Primer Vector Theory Applied to Global Low-Thrust Trade Studies”, Journal of Guidance, Control, and Dynamics. 30 (2), 460-472, 2007. \end{enumerate}- Abstract document
- Manuscript document
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