Launch Configuration
Payload 8 racks with 2 x 0.314 m3 and 2 x 0.414 m3 
envelope: each 1.146 m3 in front of 4 of these 8 racks
Cargo mass: Dry cargo: 1,500 - 5,500 kg
 Water: 0 - 840 kg
 Gas (Nitrogen, Oxygen, air, 2 gases/flight): 0 - 
 100 kg
 ISS Refueling propellant: 0 - 860 kg (306 kg 
 of fuel, 554 kg of oxidizer)
 ISS re-boost and attitude control propellant: 0 - 
 4,700kg
 Total cargo upload capacity: 7,667 kg