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- W2029923319 abstract "The collision risk with orbital debris has become an important design issue for space missions. The highest potential danger occurs in regions of high spatial density of debris objects. This case is given by fragmentation clouds shortly after a breakup where the fragments of a parent satellite are concentrated in the vicinity of its initial orbit. The evolution of those fragmentation clouds and the resulting collision risk to a population of targets can be assessed using the tool DETACT. DETACT characterizes the uncertainty of position by describing each object's position within an volume. The collision risk or flux vs. time is derived via the intersection of the two volumes representing projectile (debris object) and target (satellite). The uncertainties of the fragmentation model used to generate a cloud of fragments are described by a uncertainty of the breakup velocity d v . This d v result in a volume inflating with time which characterizes the increasing uncertainty of the position of a fragment. Using this approach, DETACT can propagate the evolution of fragmentation clouds from short-term to long-term range. Short-term, i.e. directly after a fragmentation, to the long-term range, which starts when the cloud is distributed along the breakup orbit. Further features offered by DETACT are the capability to describe the position uncertainty of objects by several volume shapes. So other cases concerning the collision with orbital debris can be evaluated. This paper gives the theoretical background of the tool and the models included therein. It discusses DETACT's verification by comparing with ESA's MASTER model and shows the capabilities of DETACT by presenting the results of several cases. A special emphasis is laid on the assessment of breakup events within orbital constellations." @default.
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- W2029923319 date "2003-08-01" @default.
- W2029923319 modified "2023-10-16" @default.
- W2029923319 title "Assessing the short- and long-term collision risk due to fragmentation clouds" @default.
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- W2029923319 doi "https://doi.org/10.1016/s0094-5765(02)00205-9" @default.
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