Stochastic Analysis of Survivability of Double Tether
- Paper number
IAC-05-B6.P.04
- Author
Dr. Hiroshi Hirayama, Kyushu University, Japan
- Coauthor
Mr. Atushi Oishi, Kyushu University, Japan
- Coauthor
Prof. Toshiya Hanada, Kyushu University, Japan
- Year
2005
- Abstract
A stochastic method to estimate survivability of a double tether system is described in this paper. Double tether is a pair of parallel strings connected at an every certain distance, in order to improve the survivability against collisions of space debris. First, probabilities of cutting a single line tether is modeled, which is caused by a collision of space debris. Next, survivability of a double tether is formulated. It is useful to describe the process of cutting the double tether can be described with the stochastic state functions which indicate how many strings out of two have survived. And then, survivabilities of single and double tether system are evaluated and compared according to an environmental model of space debris. Result shows that the single tether is too vulnerable to survive during a mission period, and the estimated lifetime is drastically extended by implementing the double tether.
- Abstract document
- Manuscript document
IAC-05-B6.P.04.pdf (🔒 authorized access only).
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