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Table 5 Averaged density (poured and tapped), porosity, and angle of repose

From: Surface environment of Phobos and Phobos simulant UTPS

Simulant type Poured bulk density [g/cm3] Bulk porosity (Poured sample) [%] Tapped density [g/cm3] Bulk porosity (Tapped sample) [%] Angle of repose[°]
UTPS-S1 0.82 68.7 1.51 42.4 55.1
UTPS-S2 1.33 53.5 1.44 49.7 48.4
UTPS-S3 1.67 41 1.85 34.6 47.1
UTPS-TB (model1) 1.15 59.5 1.39 51.1 41.6
UTPS-TB (model2) 1.11 60.9 1.28 54.9 40.8
UTPS-TB (model3) 1.09 61.6 1.26 55.6 38.5