A fractally fractionated spacecraft

Giuliano Punzo, Derek James Bennet, Malcolm Macdonald

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

The advantages of decentralised multi-spacecraft architectures for many space applications are well understood. Distributed antennas represent popularly envisaged applications of such an architecture; these are composed of, typically, receiving elements carried on-board multiple spacecraft in precise formation. In this paper decentralised control, based on artificial potential functions, together with a fractal-like connection network, is used to produce autonomous and verifiable deployment and formation control of a swarm of spacecraft into a fractal-like pattern. The effect of using fractal-like routing of control data within the spacecraft generates complex formation shape patterns, while simultaneously reducing the amount of control information required to form such complex formation shapes. Furthermore, the techniques used ensures against swarm fragmentation, which can otherwise be a consequence of the non-uniform connectivity of the communication graph. In particular, the superposition of potential functions operating at multiple levels (single agents, subgroups of agents, groups of agents) according to a self-similar adjacency matrix produces a fractal-like final deployment with the same stability property on each scale. Results from the investigations carried out indicate the approach is feasible, whilst outlining its robustness characteristics, and versatility in formation deployment and control. Considering future high-precision formation flying and control capabilities, this paper considers, for the first time and as an example of a fractally fractionated spacecraft, a decentralised multi-spacecraft fractal shaped antenna. Furthermore, multi-spacecraft architecture exploiting fractal-like formations can be considered to investigate multi-scale phenomena in areas such as cosmic radiation and space plasma physics. Both numerical simulations and analytic treatment are presented, demonstrating the feasibility of deploying and controlling a fractionated fractal antenna in space through autonomous decentralised means.
This work frames the problem of architecture and tackles the one of control, whilst not neglecting actuation.
LanguageEnglish
PagesArticle IAC-11-D1.4.11
Number of pages10
Publication statusPublished - 3 Oct 2011
Event62nd International Astronautical Congress 2011 - Cape Town, South Africa
Duration: 3 Oct 20117 Oct 2011

Conference

Conference62nd International Astronautical Congress 2011
CountrySouth Africa
CityCape Town
Period3/10/117/10/11

Fingerprint

Fractals
Spacecraft
Antennas
Decentralized control
Cosmic rays
Space applications
Physics
Plasmas
Communication
Computer simulation

Keywords

  • multi-spacecraft swarms
  • distributed antennas
  • formation flying
  • fractal patterns
  • control data
  • spacecraft architectures
  • numerical simulation
  • decentralised control

Cite this

Punzo, G., Bennet, D. J., & Macdonald, M. (2011). A fractally fractionated spacecraft. Article IAC-11-D1.4.11. Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa.
Punzo, Giuliano ; Bennet, Derek James ; Macdonald, Malcolm. / A fractally fractionated spacecraft. Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa.10 p.
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Punzo, G, Bennet, DJ & Macdonald, M 2011, 'A fractally fractionated spacecraft' Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa, 3/10/11 - 7/10/11, pp. Article IAC-11-D1.4.11.

A fractally fractionated spacecraft. / Punzo, Giuliano; Bennet, Derek James; Macdonald, Malcolm.

2011. Article IAC-11-D1.4.11 Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa.

Research output: Contribution to conferencePaper

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Punzo G, Bennet DJ, Macdonald M. A fractally fractionated spacecraft. 2011. Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa.