Space debris: Assessing risk and responsibility
Citations
144 citations
Cites background from "Space debris: Assessing risk and re..."
...Operational models of the changing risks of space debris damage have been developed to analyze costing strategies for debris removal (Bradley and Wein 2009)....
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...Operational models of the changing risks of space debris damage have been developed to analyze costing strategies for debris removal (Bradley and Wein, 2009)....
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88 citations
Cites background from "Space debris: Assessing risk and re..."
...If, in addition, the distribution of the metals is uncontrolled, the ownership can be difficult to determine (Nollkaemper, 1994; Bradley and Wein, 2009)....
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49 citations
40 citations
Cites background from "Space debris: Assessing risk and re..."
...In this context, the successful Chinese FengYun 1C anti-satellite weapon test in 2007, which significantly increased the probability of collision, has been widely condemned [18,22]....
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...Bradley and Wein [18] demonstrated that achieving full compliance with the 25-year spacecraft deorbiting guidelines could maintain the lifetime risk from space debris at a sustainable level....
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...could be reached in about 50 years [18]....
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References
1,232 citations
337 citations
"Space debris: Assessing risk and re..." refers background or methods in this paper
...9 of Johnson et al. (2001) presents, for altitudes of 200, 500, 1000, and 1500 km, a piecewise-linear probability density function fvc(vc) of the relative velocity of two objects given that they collide (i.e., the relative collision velocity)....
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...(4) in Johnson et al. (2001), which states that the number of fragments from a collision having characteristic length at least Lc meters is N(Lc;M) = 0.1M 0.75L−1.71c , (B.42) where M is the mass of the objects involved if the collision is catastrophic, and M is the product of the mass of the less…...
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...…S} is split between hazardous (F hτ ) and benign (F b τ ) by calculating the probability that a collision between it and an intact would be catastrophic, which occurs if the kinetic energy of the projectile in Joules is 40 times greater than the mass of the target in grams (Johnson et al., 2001)....
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...The collision rate parameters (βαγ), the debris generation parameters (δ τκ αγ), and the decay rates are computed by taking expectations over the three probability distributions from Johnson et al. (2001) and the two uniform distributions....
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...Though Johnson et al. (2001) defines a non-catastrophic collision as one in which only the less massive object breaks up, we assume that in intact-intact and fragment-fragment collisions, a non-catastrophic collision produces no new fragments....
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324 citations
289 citations
"Space debris: Assessing risk and re..." refers background or methods in this paper
...01 m(2)/kg (Kaula, 1983) and does not deploy an end-of-life sail-like device to increase this ratio....
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...We assume the intact has an area-to-mass ratio of 0.01 m2/kg (Kaula, 1983) and does not deploy an end-of-life sail-like device to increase this ratio....
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...01 m(2)/kg (Kaula, 1983) and does not deploy an end-of-life sail-like device to increase this ratio. The intact is initally in a circular orbit at 950 km, and by Eq. (B.10), its initial velocity is 7.375 km/s. Fig. 6-2 of NASA Safety Standard 1740.14 (1995) gives orbits as (perigee, apogee) pairs for various area-to-mass ratios that decay naturally in 25 years....
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...Recommended values for the A/M ratio for intacts range between 2× 10−3 and 2 × 10−2 m(2)/kg (Kaula, 1983), which yield residence times of between 5....
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...Recommended values for the A/M ratio for intacts range between 2× 10−3 and 2 × 10−2 m2/kg (Kaula, 1983), which yield residence times of between 5.5× 103 and 5.5× 104 years....
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219 citations
"Space debris: Assessing risk and re..." refers background or methods in this paper
...The values for the collision rate parameters βαγ, the fragment generation parameters δ τκ αγ, and the decay rates μα are found by physical modeling (Alberty & Silbey, 1997; King-Hele, 1964) and calculations using the empirical probability distributions and formulas describing satellite fragmentation and fragment characteristics developed in Johnson et al....
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...…incorporating physical principles for collision rates (Alberty & Silbey, 1997), decay rates (Rossi et al., 1994), and orbital trajectories (King-Hele, 1964), as well as rocket body and spacecraft characteristics (Kessler, 2000) and the fragmentation models and empirical distributions…...
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...A satellite sweeps out an area of an ellipse at constant rate r2θ̇ = h (King-Hele, 1964, Eq....
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...(3.20) in King-Hele (1964)....
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..., 1994), and orbital trajectories (King-Hele, 1964), as well as rocket body and spacecraft characteristics (Kessler, 2000) and the fragmentation models and empirical distributions developed in Johnson et al....
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