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====Cancelled modules====
[[File:ISS Crew Return Vehicle.jpg|thumb|Il prototipo del [[NASA X-38|X-38]] a [[corpo portante]].]]
[[File:ISS Crew Return Vehicle.jpg|thumb|The prototype [[X-38]] [[lifting body]], the cancelled ISS [[Crew Return Vehicle]]|alt=A small, stubby spaceplane, coloured black on its underside and white on its topside, descending against a cloudy sky. The words "United States" and the NASA logo are visible on its sides.]]
Several modules planned for the station have been cancelled over the course of the ISS programme, whether for budgetary reasons, because the modules became unnecessary, or following a redesign of the station after the 2003 [[Space Shuttle Columbia disaster|''Columbia'' disaster]]. The cancelled modules include:
Molti moduli pianificati per la stazione sono stati cancellati nel corso del programma, sia per motivi legati al bilancio, sia perchè non si sono più resi necessari e sia a seguito della riprogettazione della stazione a seguito dell'incidente del Columbia. I moduli cancellati includono:
* The US [[Centrifuge Accommodations Module]] for experiments in varying levels of [[artificial gravity]].<ref>{{cite web|url=http://forum.nasaspaceflight.com/forums/thread-view.asp?tid=12560&mid=269666|title=Where is the Centrifuge Accommodation Module (CAM)?|publisher=NASASpaceflight.com|accessdate=12 October 2009}}</ref><!-- ▼
U.S. President [[Barack Obama]]'s 2011 budget contains money for extending the ISS and this could allow procuring a new centrifuge for the International Space Station.<ref>[http://www.whitehouse.gov/omb/factsheet_department_nasa/ White House FY 2011 Budget Proposal]</ref>
▲* TheLa USstatunitense ''[[Centrifuge Accommodations Module]] '' forper experimentsesperimenti ina varyingvariabile levelslivello ofdi [[ artificialInterazione gravitygravitazionale|gravità]] artificiale.<ref>{{cite web|url=http://forum.nasaspaceflight.com/forums/thread-view.asp?tid=12560&mid=269666|title=Where is the Centrifuge Accommodation Module (CAM)?|publisher=NASASpaceflight.com|accessdate=12 October 2009}}</ref> <!--
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* The US L'''[[Habitation Module]]'' (statunitense), whichche woulddoveva havefornire servedalla asstazione theuna station'szona living quartersabitativa. TheLe zone dedicate al sonno sleepsono stationsadesso aredislocate nowin spreaddiversi throughoutluoghi thedella stationstazione.<ref>{{cite web|url=http://www.space.com/missionlaunches/060214_iss_module.html|title=NASA Recycles Former ISS Module for Life Support Research|author=Tariq Malik|accessdate=11 March 2009|publisher=Space.com|date=14 February 2006}}</ref>
* The USIl ''[[Crew Return Vehicle]]'' would(statunitense) haveche serveddoveva asessere thela station'sscialuppa lifeboat;di asalvataggio servicedella nowstazione, providedquesto bycompito oneviene svolto dalle neavette [[Soyuz spacecraftSojuz]] for every three crew members aboard.<ref name="CRV">{{cite web|url=http://esapub.esrin.esa.it/bulletin/bullet101/graf.pdf|title=The X-38 and Crew Return Vehicle Programmes|accessdate=4 October 2009|author=E. D. Graf|date=February 2000|format=PDF|work=ESA Bulletin 101|publisher=European Space Agency}}</ref>
* The US [[Interim Control Module]] and [[ISS Propulsion Module]] were intended to replace functions of ''Zvezda'' in case of a launch failure.<ref>{{cite web|title=ICM Interim Control Module|publisher=U.S. Naval Center for Space Technology|url=http://code8200.nrl.navy.mil/icm.html|archiveurl=http://web.archive.org/web/20070208164211/http://code8200.nrl.navy.mil/icm.html|archivedate=8 February 2007}}</ref> ▼
* The Russian [[Universal Docking Module]], to which the cancelled Russian Research modules and spacecraft would have docked.<ref name="Zak">{{cite web|url=http://www.russianspaceweb.com/iss_russia.html|accessdate=3 October 2009|publisher=russianspaceweb.com|author=Anatoly Zak|title=Russian segment of the ISS}}</ref>
▲* TheGli USstatunitensi ''[[Interim Control Module]] ìì ande ''[[ISS Propulsion Module]] '' wereerano intendedstati toprogettati replaceper functionssostituire ofil modulo ''Zvezda'' innel caso caseche ofil alancio launchfosse failurefallito.<ref>{{cite web|title=ICM Interim Control Module|publisher=U.S. Naval Center for Space Technology|url=http://code8200.nrl.navy.mil/icm.html|archiveurl=http://web.archive.org/web/20070208164211/http://code8200.nrl.navy.mil/icm.html|archivedate=8 February 2007}}</ref>
* The Russian [[Science Power Platform]] would have provided the [[Russian Orbital Segment]] with a power supply independent of the ITS solar arrays.<ref name="Zak"/>
* Two L'''[[RussianUniversal ResearchDocking Module]]s'' thatdi wereprogettazione plannedrussa, todove beavrebbe useddovuto foressere scientificagganciato researchil laboratorio spaziale russo poi cancellato.<ref name="Zak">{{cite web|url=http://www.boeingrussianspaceweb.com/defense-space/space/spacestation/components/russian_laboratoryiss_russia.html|titleaccessdate=Russian3 ResearchOctober Modules2009|publisher=Boeingrussianspaceweb.com|accessdateauthor=21Anatoly JuneZak|title=Russian 2009segment of the ISS}}</ref>
* La russa ''[[Science Power Platform]]' che avrebbe dovuto fornire energia elettrica al segmento russo indipendentemente dai pannelli solari della ISS.<ref name="Zak"/>
* Due ''[[Russian Research Module]]'' erano stai pianificati per la ricerca scientifica.<ref>{{cite web|url=http://www.boeing.com/defense-space/space/spacestation/components/russian_laboratory.html|title=Russian Research Modules|publisher=Boeing|accessdate=21 June 2009}}</ref>
==Traduzione==
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