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General Description
The FGB is the first ISS element, intended for a 15-year service in orbit. It provides a habitation area for the crew, power supply and flight control functions for the whole station. In terms of size and overall layout, the FGB is similar to the Kvant-2 and Crystal modules of the Mir space station. As a part of the unitary space platform, the FGB will also act as a fuel storage facility, capable of in-flight re-fueling from Progress-M automatic tankers. Moreover, the Block has space to accommodate various scientific equipment, expendables, spare parts, etc. The following is a list of tasks laid on the FGB: to change orbit parameters for moving the FGB itself into the orbit assigned for docking operations to provide orientation and stabilization for itself when docking with the space shuttle to provide electric power for the U.S. segment and orbital position of the FGB/Node-1 assembly until docking with the SM to fulfill the functions of an active vehicle in docking operations with the SM to store fuel for the needs of the whole station throughout its operational life to supply electrical power to the consumers in other ISS modules. Vital data: Weight before launch: 24,100 kg Weight in orbit: 20,040 kg Lifetime: not less than 15 years Orbit inclination, 51.6 degree Orbit height, km minimal 350 maximal 180 Orbit height when docking: 350 km Target orbit: 410-450 km Power to be supplied to the U.S. segment in kWt: until docking with SM, 0.8 after docking with SM, 1.2 (Russian ISS Modules, Vladimir Karnozov, Launchspace Publications, 1998)
Images from NASA, ESA, NASDA, CSA, RSA
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