Effects of New Collision Model on LEO Orbital Debris Evolution
- Paper number
IAC-07-A6.4.09
- Author
Mr. Tomohiro Narumi, Kyushu University, Japan
- Coauthor
Prof. Toshiya Hanada, Kyushu University, Japan
- Coauthor
Ms. Satomi Kawamoto, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Coauthor
Dr. Seishiro Kibe, Thailand
- Coauthor
Mr. Yoshihiro Tsuruda, Kyushu University, Japan
- Year
2007
- Abstract
This paper evaluates the effects of newly developed collision model based on two satellite impact tests on LEO orbital debris evolution. (explanation of two satellite impact tests and its remarks) The orbital evolutionary model used is LEODEEM, an orbital debris evolutionary model for low-Earth orbit developed jointly by Kyushu University and Japan Aerospace Exploration Agency. The propagator calculates long-term evolution of artificial objects greater than 1 cm in LEO with future space operations, including collisions and explosions. The aim of LEO modeling is to discuss effective mitigation measures proposed by space agencies (e.g. rocket body explosion suppression, decreasing operational debris, or electrodynamic tether system) for the sake of conserving orbital environment. Therefore there are several evolutionary models in the world and it is necessary to compare and evaluate accuracy and effectiveness of mitigation measures. Currently, respective predictions computed by the models are different because of breakup model, calculation of propagation and collision probability, initial population, and assumptions. The objectives of the research are to validate and evaluate the effect of long-term orbital debris projection using new breakup model at low-velocity impact being developed at Kyushu University. The impact experiments were performed at an impact velocity of 1.45 km/s and 4.44 km/s using the projectile made of aluminum alloy by the two-stage light gas gun in Kyushu Institute of Technology in 2005, and next experiments will be performed in this year. The details of the model and results will be presented in this paper.
- Abstract document