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[[File:ISS Node STA.jpg|thumb|The Node STA in the [[Space Station Processing Facility]] during 2010]] |
[[File:ISS Node STA.jpg|thumb|The Node STA in the [[Space Station Processing Facility]] during 2010]] |
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'''Node 4''', also known as the '''Docking Hub System''' ('''DHS'''), is a proposed module of the [[International Space Station]] (ISS). [[NASA]] is considering a 40-month design and development effort for Node 4 that would result in its launch in late 2013.<ref name=NasaSpaceflight>{{cite web|last=Bergin|first=Chris|title=Soyuz TMA-19 relocated as ISS managers discuss Node 4 addition|url=http://www.nasaspaceflight.com/2010/06/soyuz-tma-19-relocated-iss-discuss-node-4-addition/|work=NasaSpaceflight.com|accessdate=4 March 2011}}</ref> |
'''Node 4''', also known as the '''Docking Hub System''' ('''DHS'''), is a proposed module of the [[International Space Station]] (ISS). [[NASA]] is considering a 40-month design and development effort for Node 4 that would result in its launch in late 2013.<ref name=NasaSpaceflight>{{cite web|last=Bergin|first=Chris|title=Soyuz TMA-19 relocated as ISS managers discuss Node 4 addition|url=http://www.nasaspaceflight.com/2010/06/soyuz-tma-19-relocated-iss-discuss-node-4-addition/|work=NasaSpaceflight.com|accessdate=4 March 2011}}</ref> |
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This article needs to be updated. Please help update this article to reflect recent events or newly available information. (June 2013)
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Node 4, also known as the Docking Hub System (DHS), is a proposed module of the International Space Station (ISS). NASA is considering a 40-month design and development effort for Node 4 that would result in its launch in late 2013.[1]
Node 4 would be built using the Node Structural Test Article (STA) and docked to the forward port of the Harmony module. The Structural Test Article was built to facilitate testing of ISS hardware and was intended to become Node 1. However, during construction, structural design flaws were discovered. The under-construction Node 2 was renamed Node 1 and the STA (ex-Node 1) was put into storage at the Kennedy Space Center (KSC).[2]
Since Space Shuttle program has been terminated, should a decision to build and launch Node 4 be taken, it could be launched by an Atlas VorDelta IV rocket.[1]
In December 2011 Boeing proposed using Node 4 as the core of an Exploration Gateway Platform to be constructed at the ISS and relocated via space tug to an Earth-Moon Lagrange point (EML-1 or 2). The purpose of the platform would be to support lunar landing missions with a reusable lunar lander after the first two SLS flights. It would also satisfy the need for a L1 propellant depot for lunar missions. Other hardware would include an airlock, an 'international module', and a MPLM based habitat module.[3]
