Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Generation of optimal trajectories for Earth hybrid pole sitters

Ceriotti, Matteo and McInnes, Colin (2011) Generation of optimal trajectories for Earth hybrid pole sitters. Journal of Guidance, Control and Dynamics, 34 (3). pp. 847-859. ISSN 0731-5090

[img] PDF - Submitted Version
Download (608Kb)

    Abstract

    A pole-sitter orbit is a closed path that is constantly above one of the Earth's poles, by means of continuous low thrust. This work proposes to hybridize solar sail propulsion and solar electric propulsion (SEP) on the same spacecraft, to enable such a pole-sitter orbit. Locally-optimal control laws are found with a semi-analytical inverse method, starting from a trajectory that satisfies the pole-sitter condition in the Sun-Earth circular restricted three-body problem. These solutions are subsequently used as first guess to find optimal orbits, using a direct method based on pseudospectral transcription. The orbital dynamics of both the pure SEP case and the hybrid case are investigated and compared. It is found that the hybrid spacecraft allows savings on propellant mass fraction. Finally, it is shown that for sufficiently long missions, a hybrid pole-sitter, based on mid-term technology, enables a consistent reduction in the launch mass for a given payload, with respect to a pure SEP spacecraft.

    Item type: Article
    ID code: 29194
    Notes: Impact Factor: 1.031, Half-Life: >10.0
    Keywords: pole-sitter orbit, hybrid propulsion, trajectory optimisation, earth observation, Motor vehicles. Aeronautics. Astronautics, Mechanical engineering and machinery, Applied Mathematics, Control and Systems Engineering, Electrical and Electronic Engineering, Space and Planetary Science, Aerospace Engineering
    Subjects: Technology > Motor vehicles. Aeronautics. Astronautics
    Technology > Mechanical engineering and machinery
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Technology and Innovation Centre > Advanced Engineering and Manufacturing
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 07 Mar 2011 23:27
    Last modified: 28 Mar 2014 11:15
    URI: http://strathprints.strath.ac.uk/id/eprint/29194

    Actions (login required)

    View Item

    Fulltext Downloads: