In-service power requirement for motorised momentum exchange tether (MMET)

N. Ismail, M.P. Cartmell

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


In this paper, the study is focused on the power requirements of an electric motor located in the central facility of the Motorised Momentum Exchange Tether (MMET). A simulation was run using a specially written computer program to obtain the required minimum power for a typical duty cycle, and also to study the responses for three different operational conditions; before payload release, torque-off and reverse torques conditions for both the propulsion and outrigger system on both circular and elliptical orbits. The differences in the responses when using rigid body and flexural models of MMET are highlighted and discussed in order to look at the sensitivity of the model to the power budget calculations. The study then continues with a comparative study between the MMET and conventional propulsion systems in terms of the energy used specifically for an Earth-Moon return mission for circular and elliptical orbits.
Original languageEnglish
Title of host publication61st International Astronautical Congress 2010, IAC 2010
Place of PublicationParis
Number of pages7
Publication statusPublished - 2010


  • computer simulation
  • conventional propulsion
  • duty cycles
  • elliptical orbits
  • momentum exchange
  • operational conditions
  • power budgets
  • power requirement
  • rigid body

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