a. The space debris part of the MASTER-2005 model specified in clause 10.2.3 shall be used for Earth altitudes below 36 786,0 km.
b. The model shall be used for all mission durations.
c. The model shall be used for particle diameters from 1 micron to 100 m.
d. For conversion between mass and diameter and for impact damage assessments the following shall be used:
1. An average density of 2,8 g cm-3.
2. A spherical shape.
NOTE 1 For altitudes above 36 786,0 km and for all other interplanetary or planetary orbits space debris does not need to be considered.
NOTE 2 The density of 2,8 g cm-3 represents the average density of space debris objects > 1mm. Additional information is given in Annex J.2.2.1.4.
a. The meteoroid model shall be selected according to the mission altitude as follows:
1. For the analysis of meteoroid fluxes in Earth altitudes below 36 786,0 km, use either the meteoroid part of the MASTER-2005 model specified in clause 10.2.3 or the model specified in clause 10.2.4.
NOTE The meteoroid model in 10.2.3 is defined for particle masses from 10-12g to 100g. The meteoroid model defined in 10.2.4 is defined for particle masses from 10-18g to 100g.
2. For the analysis of meteoroid fluxes in orbits not covered by 10.2.2.2a.1 and between the mean Venus and Mars heliocentric orbits, use the model specified in clause 10.2.4.
NOTE 1 This includes the moon distance and the Lagrange points of the Sun-Earth system.
NOTE 2 Contributions from the meteoroid stream model specified in clause 10.2.4.5 can be neglected for orbits between Venus and Mars and not covered by 10.2.2.2a.1.
NOTE 3 For interplanetary orbits outside of the range defined in 10.2.2.2a.1 and 10.2.2.2a.2 no reference model is specified. Available interplanetary meteoroid flux models are given in Annex J.2.1.5.
b. The models specified in 10.2.2.2a shall be used for all mission durations.
c. For missions of less than 3 weeks duration the flux from the meteoroid stream model specified in 10.2.4.5 shall be added for the given mission period.
d. For conversion between mass and diameter and for impact damage assessments the following shall be used:
1. A density of 2,5 g cm-3.
2. A spherical shape.