Article Number: 11F615A8. Manufacturer's Designation: 7K-T, 7K-T/AF/. Class: Manned. Type: Spacecraft. Nation: USSR. Manufacturer: NPOE. Craft.Crew Size: 2. Design Life: 3 days. Orbital Storage: 110.00 days. Total Length: 7.5 m. Maximum Diameter: 2.7 m. Total Habitable Volume: 11.00 m3. Total Mass: 6,800 kg. Total Propellants: 500 kg. Primary Engine Thrust: 417 kgf. Main Engine Propellants: Nitric Acid/Hydrazine. Main Engine Isp: 282 sec. Total spacecraft delta v: 210 m/s. Electric system: 0.84 total average kW. Electrical System: Batteries. Description: Version of 7K-T for flights to Almaz; unknown differences with model for Salyut. References: 102 .