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 ===2.9.1 Mir Specifications=== Mir base block
 * Length .................................................... 13.13 m
 * Maximum diameter ................................... 4.15 m
 * Habitable volume ..................................... 90 m3
 * Weight at launch ....................................... 20,400 kg
 * Launch vehicle ......................................... Proton (three-stage)
 * Orbital inclination .................................... 51.6°
 * Number of solar arrays ............................. 2 (3rd added by EVA)
 * Span across solar arrays ........................... 29.73 m
 * Area of solar arrays .................................. 76 m2 (98 sq/m w/third array)
 * Electricity available .................................. 9-10 kW at 28.6 v
 * Resupply carriers ...................................... Progress, Progress M
 * Number of docking/berthing ports ............ 2 docking; 4 berthing
 * Number of main engines .......................... 2
 * Main engine thrust (each) ......................... 300 kg