Deployment simulation of very large inflatable tensegrity reflectors

Thomas Sinn, Massimiliano Vasile

Research output: Contribution to conferencePaper

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Abstract

Propulsion, energy collection, communication or habitation in space requires ever larger space structures for the exploration of our solar system and beyond.
Due to the payload size restrictions of the current launch vehicles, deployable structures are the way to go to launch very large structures into orbit. This paper therefore presents the design and simulation of a tensegrity based structure with inflatable rigidizable tubes as compression struts. The
literature review showed that inflatable structures are most promising for the development of deployable reflectors larger than twenty meters in diameter.
Good compression performance and reliability can be achieved by employing
rigidisable inflatable tubes. The concept presented in this paper will focus on the development and simulation of a one meter diameter hexagonal reflector substructure that can be easily expanded to larger diameters due to its modular design. The one meter diameter modular approach was chosen to be able to build a full size benchmark model to validate the numerical data in the future. Due to the fact that the tensegrity compression elements are not
initiating at one specific location, a passive reaction gas inflation technique is proposed which makes the structure independent of any pumps or other active inflation devices. This paper will discuss the use of inflatable rigidizable
elements and their counteraction with the rest of the tensegrity structure. Simulations have been undertaken to capture the deployment behaviour of the inflating tube while getting perturbated by the attached tensegrity tension
cables. These simulations showed that the use of inflatable rigidisable struts in tensegrity assemblies can greatly decrease the system mass and stowed volume, especially for very large reflectors compared to conventional
approaches.
Original languageEnglish
PagesIAC-11-C2
Number of pages8
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

Keywords

  • simulation
  • inflatable reflectors

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  • Cite this

    Sinn, T., & Vasile, M. (2011). Deployment simulation of very large inflatable tensegrity reflectors. IAC-11-C2. Paper presented at 62nd International Astronautical Congress 2011, Cape Town, South Africa.