Combined high and low-thrust geostationary orbit insertion with radiation constraint

Malcolm Macdonald, Steven Robert Owens

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
146 Downloads (Pure)


The sequential use of an electric propulsion system is considered in combination with a high-thrust propulsion system for application to the propellant-optimal Geostationary Orbit insertion problem, whilst considering both temporal and radiation flux constraints. Such usage is found to offer a combined propellant mass saving when compared with an equivalent high-thrust only transfer. This propellant mass saving is seen to increase as the allowable transfer duration is increased, and as the thrust from the low-thrust system is increased, assuming constant specific impulse. It was found that the required plane change maneuver is most propellant-efficiently performed by the high-thrust system. The propellant optimal trajectory incurs a significantly increased electron flux when compared to an equivalent high-thrust only transfer. However, the electron flux can be reduced to a similar order of magnitude by increasing the high-thrust propellant consumption, whilst still delivering an improved mass fraction.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalActa Astronautica
Early online date12 Oct 2017
Publication statusPublished - 30 Jan 2018


  • orbit Insertion
  • radiation constraint
  • mission analysis
  • system analysis
  • hybrid propulsion


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