Tethers as Debris: Hydrocode Simulation of Impacts of Tether Fragments on Planar Aerospace Materials

Details Tethers as Debris: Hydrocode Simulation of Impacts of Tether Fragments on Planar Aerospace Materials Tethers as Debris: Hydrocode Simulation of Impacts of Tether Fragments on Planar Aerospace Materials

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.474e&link_type=abstract

IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,

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Tethers promise to find use in a variety of space applications. Despite being narrow objects, their great lengths result in them having large total areas, and so tethers are quite susceptible to being severed by orbital debris. Extensive work has been done designing tethers that resist severs by small debris objects, and hence have longer working lives. It is from this perspective that most recent work has considered the tether - debris question. The potential of intact tethers, or severed tether fragments, as debris to pose a significant collision risk to other spacecraft has been less well studied. Understanding the consequences of such encounters is important in assessing the risks to other spacecraft posed by tethers. In this paper I discuss the damage that different types of tethers may produce on planar aerospace materials, as revealed by hypervelocity impact simulations using the SPH hydrodynamic code. Tether types considered include single-line braided polymers and multi-strand metal wires. Target materials considered include aluminum plates and woven polymer panels typically used in debris shielding. Characterizing potential damage by errant tethers is pertinent to the design of missions and spacecraft utilizing them, especially when considering the mandatory orbital debris hazard assessments missions will have to undertake to meet future debris mitigation guidelines.

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