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• ISS_Propulsion_Module abstract "The ISS Propulsion module was proposed as a backup to functions performed by the Zvezda Service Module and Progress spacecraft. Critical ISS functionality such as guidance, navigation, control and propulsion are provided only by Russian (Zvezda and Progress) and the European (ATV). A Propulsion Module would have been needed for ISS altitude maintenance and reboost, debris avoidance maneuvers, attitude control and propellant supply in the event the Zvezda Service Module was not available (launch failure, etc.) to the International Space Station. If the Zvezda had not been available, the Interim Control Module would have been used at first. It only had a lifetime of three years; then the Propulsion Module would have been necessary.The ISS requires an average 7,000 kg of propellant each year for altitude maintenance, debris avoidance and attitude control. Based on current usage, it will need 105,000 kg through 2014. A Propulsion Module would have provided reserve propellant for one year of ISS orbit life in case of supply interruption. A Propulsion Module would have been attached to the Unity node of the ISS.Multiple supply vehicles are required to satisfy the ISS's 7,000 kg annual average propellant need. The current plan for six Progress M1 spacecraft per year meets that need.The Propulsion Module would hold 9808 kg fuel. Progress M holds 1100 kg; Progress M1 holds 1950 kg. ESA ATV holds 4,000 kg. The cancelled U.S. Interim Control Module holds 5000 kg of fuel. A Shuttle Orbiter ISS generic reboost has 232 kg of fuel available. An Orbiter Max reboost mission has 1626 kg of reboost fuel available. Zarya FGB [Russian: ФГБ - Функциональный Грузовой Блок, English: Functional (or Operational) Cargo Block (or Module)] holds 5,500 kg and the Zvezda Service module holds 860 kg, however, it is generally preferred to keep the main thrusters on Zarya and Zvezda in reserve, as they have finite lifespans.The Propulsion Module, besides being part of the backup plan for if the Service Module was not available, was intended to be an American-owned propulsion system for the station and planned as a late addition. However, the original design was overbudget and late. An alternative design, the "Node X" design, which was built around an improperly fabricated hull intended for Node 2 or 3, was then proposed and tentatively included in the plan, designed with two detachable fuel modules that could be carried up and down in a Shuttle cargo bay for replacement to avoid the problems of transferring propellant between tanks in space. It has subsequently been deleted from the plans, instead requiring the station to rely on the ATV and Progress spacecraft for reboost. Furthermore, in the wake of the Shuttle's retirement, further redesign of the Propulsion Module would have been necessary.".
• ISS_Propulsion_Module thumbnail ISS_Propulsion_module.jpg?width=300.
• ISS_Propulsion_Module wikiPageExternalLink index.html.
• ISS_Propulsion_Module wikiPageExternalLink 1296.
• ISS_Propulsion_Module wikiPageExternalLink components.htm.
• ISS_Propulsion_Module wikiPageID "940473".
• ISS_Propulsion_Module wikiPageRevisionID "540527725".
• ISS_Propulsion_Module hasPhotoCollection ISS_Propulsion_Module.
• ISS_Propulsion_Module subject Category:Components_of_the_International_Space_Station.
• ISS_Propulsion_Module type Abstraction100002137.
• ISS_Propulsion_Module type Cognition100023271.
• ISS_Propulsion_Module type Component105868954.
• ISS_Propulsion_Module type ComponentsOfTheInternationalSpaceStation.
• ISS_Propulsion_Module type Concept105835747.
• ISS_Propulsion_Module type Content105809192.
• ISS_Propulsion_Module type Idea105833840.
• ISS_Propulsion_Module type Part105867413.
• ISS_Propulsion_Module type PsychologicalFeature100023100.
• ISS_Propulsion_Module comment "The ISS Propulsion module was proposed as a backup to functions performed by the Zvezda Service Module and Progress spacecraft. Critical ISS functionality such as guidance, navigation, control and propulsion are provided only by Russian (Zvezda and Progress) and the European (ATV).".
• ISS_Propulsion_Module label "ISS Propulsion Module".
• ISS_Propulsion_Module label "ISS Propulsion Module".
• ISS_Propulsion_Module label "ISS推進モジュール".
• ISS_Propulsion_Module label "Module de propulsion (Station spatiale internationale)".
• ISS_Propulsion_Module label "Módulo de Propulsão".
• ISS_Propulsion_Module sameAs ISS_Propulsion_Module.
• ISS_Propulsion_Module sameAs Module_de_propulsion_(Station_spatiale_internationale).
• ISS_Propulsion_Module sameAs ISS推進モジュール.
• ISS_Propulsion_Module sameAs ISS_추진_모듈.
• ISS_Propulsion_Module sameAs Módulo_de_Propulsão.
• ISS_Propulsion_Module sameAs m.03rytg.
• ISS_Propulsion_Module sameAs Q1060240.
• ISS_Propulsion_Module sameAs Q1060240.
• ISS_Propulsion_Module sameAs ISS_Propulsion_Module.
• ISS_Propulsion_Module wasDerivedFrom ISS_Propulsion_Module?oldid=540527725.
• ISS_Propulsion_Module depiction ISS_Propulsion_module.jpg.
• ISS_Propulsion_Module isPrimaryTopicOf ISS_Propulsion_Module.