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{{Short description|2nd expedition to the International Space Station}}
⚫
{{Use dmy dates|date=December 2021}}
{{Infobox spaceflight
{{Infobox spaceflight
| name = ISS Expedition 2
| name = Expedition 2
| image = S100E5971 - STS-100 - View of the ISS taken during final flyaround of STS-100 - DPLA - 3c811fbfeeeb9d6d9e00b4729badfff5.jpg
| image =
| image_caption =
| image_caption = Aft view of the International Space Station in April 2001, a month into Expedition 2.
| insignia = Expedition 2 insignia.svg
| insignia = Expedition 2 insignia.svg
| insignia_caption = Expedition 2 mission patch


| mission_type = ISS Expedition
| mission_type = [[List of International Space Station expeditions|Long-duration expedition]]
| mission_duration = 163&nbsp;days, 8&nbsp;hours, 13&nbsp;minutes (at ISS)<br/>167&nbsp;days, 6&nbsp;hours, 41&nbsp;minutes (launch to landing)<ref name=ISS2 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/station/crew/exp2/index.html|title=ISS Expedition Two Crew|publisher=NASA|accessdate=3 January 2011}}</ref>
| mission_duration = 163&nbsp;days, 8&nbsp;hours, 13&nbsp;minutes (at ISS)<br/>167&nbsp;days, 6&nbsp;hours, 41&nbsp;minutes (launch to landing)<ref name=ISS2 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/station/crew/exp2/index.html|title=ISS Expedition Two Crew|publisher=[[NASA]]|access-date=3 January 2011|archive-date=22 April 2008|archive-url=https://web.archive.org/web/20080422122857/http://spaceflight.nasa.gov/station/crew/exp2/index.html|url-status=dead}}</ref>
| orbits_completed = 2,635<ref name=SFexp2>{{cite web|url=http://www.spacefacts.de/iss/english/exp_2.htm|title=ISS: Expedition 2|publisher=spacefacts.de|accessdate=3 January 2011}}</ref>
| orbits_completed = 2,635<ref name=SFexp2>{{cite web|url=http://www.spacefacts.de/iss/english/exp_2.htm|title=ISS: Expedition 2|publisher=spacefacts.de|access-date=3 January 2011|archive-date=21 December 2010|archive-url=https://web.archive.org/web/20101221093958/http://spacefacts.de/iss/english/exp_2.htm|url-status=live}}</ref>
| distance_travelled = {{convert|111152720|km|mi}}
| distance_travelled = {{convert|111152720|km|mi}}


| crew_size = 3
| crew_size = 3
| crew_members = [[Yury Usachev]]<br/>[[Susan J. Helms|Susan Helms]]<br/>[[James Voss]]
| crew_members = [[Yury Usachev]]<br/>[[Susan J. Helms|Susan Helms]]<br/>[[James S. Voss|James Voss]]
| crew_EVAs = 1
| crew_EVAs = 1
| crew_EVA_duration = 19&nbsp;minutes
| crew_EVA_duration = 19&nbsp;minutes
| crew_photo = ISS Expedition 2 crew.jpeg
| crew_photo = ISS Expedition 2 crew.jpeg
| crew_photo_caption = L-R: [[James Voss]], [[Yury Usachev]], and [[Susan J. Helms|Susan Helms]]
| crew_photo_caption = L-R: [[James S. Voss|James Voss]], [[Yury Usachev]], and [[Susan J. Helms|Susan Helms]]


| space_station = [[International Space Station]]
| space_station = [[International Space Station]]
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}}
}}


'''Expedition 2''' (also called '''ISS EO-2'''<ref name=EA-ISS2>{{cite web|url=http://www.astronautix.com/flights/isseo2.htm|title=ISS EO-2|publisher=Encyclopedia Astronautica|accessdate=3 January 2011}}</ref>) was the second long-duration [[spaceflight]] aboard the [[International Space Station]], immediately following [[Expedition 1]]. Its three-person crew stayed aboard the station from March to August 2001. In addition to station maintenance, the crew assisted in several station assembly missions, welcomed the first [[space tourist]] [[Dennis Tito]], and conducted some scientific experiments.
'''Expedition 2''' (also called '''ISS EO-2'''<ref name=EA-ISS2>{{cite web|url=http://www.astronautix.com/flights/isseo2.htm|title=ISS EO-2|publisher=[[Encyclopedia Astronautica]]|access-date=3 January 2011|url-status=dead|archive-url=https://web.archive.org/web/20101129075339/http://astronautix.com/flights/isseo2.htm|archive-date=29 November 2010}}</ref>) was the second long-duration [[spaceflight]] aboard the [[International Space Station]], immediately following [[Expedition 1]]. Its three-person crew stayed aboard the station from March to August 2001. In addition to station maintenance, the crew assisted in several station assembly missions, welcomed the first [[space tourist]] [[Dennis Tito]], and conducted some scientific experiments.


The crew consisted of one [[Russia]]n, Commander [[Yury Usachev]], and two American flight engineers [[Susan J. Helms|Susan Helms]] and [[James Voss]]. The three had been to the station briefly in the previous year, during the 10-day mission [[STS-101]] in May 2000.
The crew consisted of one [[Russia]]n, Commander [[Yury Usachev]], and two American flight engineers [[Susan J. Helms|Susan Helms]] and [[James S. Voss|James Voss]]. The three had been to the station briefly in the previous year, during the 10-day mission [[STS-101]] in May 2000.


The Expedition 2 crew was brought to the station aboard [[Space Shuttle]] [[Space Shuttle Discovery|''Discovery'']] during mission [[STS-102]]. The Expedition's increment began when ''Discovery'' docked on 10 March 2001, bringing Expedition 1 to an end.<ref name=ISS2 group=NASA/> In addition to the Space Shuttle flights which brought the crew to and from the station, there were two visiting Space Shuttle missions and one Soyuz mission which docked with the ISS during Expedition Two.
The Expedition 2 crew was brought to the station aboard [[Space Shuttle]] [[Space Shuttle Discovery|''Discovery'']] during mission [[STS-102]]. The Expedition's increment began when ''Discovery'' docked on 10 March 2001, bringing Expedition 1 to an end.<ref name=ISS2 group=NASA/> In addition to the Space Shuttle flights which brought the crew to and from the station, there were two visiting Space Shuttle missions and one Soyuz mission which docked with the ISS during Expedition Two.
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==Crew==
==Crew==
[[File:Expedition 2 crew poster.jpg|thumb|Expedition 2 promotional poster]]
All three crew members had visited the International Space Station together in May 2000 aboard [[STS-101]]. In addition to this spaceflight, the Expedition 2 Commander Yuri Usachev also had two other spaceflights, both of which were long-duration missions aboard ''[[Mir]]'' ([[Mir EO-15|EO-15]] and [[Mir EO-21|EO-21]]).<ref name=UsachevBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/usachev.html|title=Cosmonaut Bio: Yury Vladimirovich Usachev|publisher=NASA|date=August 2001}}</ref>
All three crew members had visited the International Space Station together in May 2000 aboard [[STS-101]]. In addition to this spaceflight, the Expedition 2 Commander Yuri Usachev also had two other spaceflights, both of which were long-duration missions aboard ''[[Mir]]'' ([[Mir EO-15|EO-15]] and [[Mir EO-21|EO-21]]).<ref name=UsachevBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/usachev.html|title=Cosmonaut Bio: Yury Vladimirovich Usachev|publisher=NASA|date=August 2001|access-date=4 January 2011|archive-date=24 November 2010|archive-url=https://web.archive.org/web/20101124150419/http://www.jsc.nasa.gov/Bios/htmlbios/usachev.html|url-status=live}}</ref>


In addition to STS-101, flight engineer Susan Helms had three other spaceflights, all of which were Space Shuttle missions ([[STS-54]], [[STS-64]], [[STS-78]]).<ref name=HelmsBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/helms.html|title=Astronaut Bio: Susan J. Helms|publisher=NASA|date=May 2007}}</ref> James Voss also had three other spaceflights, all of which were Space Shuttle missions ([[STS-44]], [[STS-53]], [[STS-69]]).<ref name=VossBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/voss-ji.html|title=Astronaut Bio: James S. Voss|publisher=NASA|accessdate=3 January 2011}}</ref>
In addition to STS-101, flight engineer Susan Helms had three other spaceflights, all of which were Space Shuttle missions ([[STS-54]], [[STS-64]], [[STS-78]]).<ref name=HelmsBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/helms.html|title=Astronaut Bio: Susan J. Helms|publisher=NASA|date=May 2007|access-date=4 January 2011|archive-url=https://web.archive.org/web/20070715234949/http://www.jsc.nasa.gov/Bios/htmlbios/helms.html|archive-date=15 July 2007|url-status=dead}}</ref> James Voss also had three other spaceflights, all of which were Space Shuttle missions ([[STS-44]], [[STS-53]], [[STS-69]]).<ref name=VossBio group=NASA>{{cite web|url=http://www.jsc.nasa.gov/Bios/htmlbios/voss-ji.html|title=Astronaut Bio: James S. Voss|publisher=NASA|access-date=3 January 2011|archive-date=22 September 2018|archive-url=https://web.archive.org/web/20180922091754/https://www.jsc.nasa.gov/Bios/htmlbios/voss-ji.html|url-status=live}}</ref>


===Prime crew===
{{Spaceflight crew
{{Spaceflight crew
|terminology = Astronaut
| crew = prime
⚫
|position1 = Commander
⚫
|crew1_up = [[Yury Usachev]]
⚫
|flights1_up = Fourth
⚫
|agency1_up = [[Russian Federal Space Agency|RSA]]
⚫
|position2 = Flight Engineer 1
⚫
|crew2_up = [[James Voss]]
⚫
|flights2_up = Fifth
⚫
|agency2_up = [[NASA]]
⚫
|position3 = Flight Engineer 2
⚫
|crew3_up = [[Susan J. Helms|Susan Helms]]
⚫
|flights3_up = Fifth
⚫
|agency3_up = [[NASA]]
⚫
}}


⚫
| position1 = Commander
===Backup crew===
⚫
| crew1_up = {{Flagicon|RUS}} [[Yury Usachev]]
⚫
| flights1_up = Fourth and last
⚫
| agency1_up = [[Russian Federal Space Agency|RSA]]

⚫
| position2 = Flight Engineer
⚫
| crew2_up = {{Flagicon|USA}} [[James S. Voss|James Voss]]
⚫
| flights2_up = Fifth and last
⚫
| agency2_up = [[NASA]]

⚫
| position3 = Flight Engineer
⚫
| crew3_up = {{Flagicon|USA}} [[Susan J. Helms|Susan Helms]]
⚫
| flights3_up = Fifth and last
⚫
| agency3_up = [[NASA]]
⚫
}}
{{Spaceflight crew
{{Spaceflight crew
|terminology = Astronaut
| crew = backup

|position1 = Commander
|crew1_up = [[Yury Onufrienko]]
| position1 = Commander
| crew1_up = {{Flagicon|RUS}} [[Yury Onufrienko]]
|flights1_up = Second
|agency1_up = [[Russian Federal Space Agency|RSA]]
| agency1_up = [[Russian Federal Space Agency|RSA]]

|position2 = Flight Engineer 1
|crew2_up = [[Daniel W. Bursch]]
| position2 = Flight Engineer 1
| crew2_up = {{Flagicon|USA}} [[Daniel W. Bursch]]
|flights2_up = Fourth
|agency2_up = [[NASA]]
| agency2_up = [[NASA]]

|position3 = Flight Engineer 2
|crew3_up = [[Carl E. Walz]]
| position3 = Flight Engineer 2
| crew3_up = {{Flagicon|USA}} [[Carl E. Walz]]
|flights3_up = Fourth
|agency3_up = [[NASA]]
| agency3_up = [[NASA]]
}}
}}


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During this expedition, research facilities launched to the Space Station included a Human Research Facility, two EXPRESS (Expedite the Processing of Experiments to the Space Station) Racks, one of which contains the Active Rack Isolation System and the Payload Equipment Restraint System. They also prepared the Destiny laboratory to enable upcoming experiments to be conducted.<ref name=SFexp2/>
During this expedition, research facilities launched to the Space Station included a Human Research Facility, two EXPRESS (Expedite the Processing of Experiments to the Space Station) Racks, one of which contains the Active Rack Isolation System and the Payload Equipment Restraint System. They also prepared the Destiny laboratory to enable upcoming experiments to be conducted.<ref name=SFexp2/>


A major focus was on gaining a better understanding of how to protect crew members from radiation while working and living in space. Radiation exposure in high doses over long periods of time can damage human cells and cause cancer or injury to the central nervous system.<ref name=Exp2Science group=NASA>{{cite web|url=http://www.nasa.gov/centers/marshall/news/background/facts/exp2fact.html_prt.htm|title=International Space Station Expedition Two: Science Operations Overview|publisher=NASA|date=March 2001}}</ref>
A major focus was on gaining a better understanding of how to protect crew members from radiation while working and living in space. Radiation exposure in high doses over long periods of time can damage human cells and cause cancer or injury to the central nervous system.<ref name=Exp2Science group=NASA>{{cite web|url=http://www.nasa.gov/centers/marshall/news/background/facts/exp2fact.html_prt.htm|title=International Space Station Expedition Two: Science Operations Overview|publisher=NASA|date=March 2001|access-date=5 January 2011|archive-date=24 November 2010|archive-url=https://web.archive.org/web/20101124150419/http://www.nasa.gov/centers/marshall/news/background/facts/exp2fact.html_prt.htm|url-status=live}}</ref>


===Launch and docking===
===Launch and docking===
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===STS-100===
===STS-100===
{{main|STS-100}}
{{main|STS-100}}
The first visitors to the station during Expedition 2 was the crew of [[STS-100]], when they docked Space Shuttle [[Space Shuttle Endeavour|''Endeavour'']] with the ISS on 21 April 2001. They spent eight days docked to the station. The primary objective of this mission was to deliver and install the [[Canadarm2]] on the ISS, which is a robotic arm similar to the [[Canadarm]] which is used on some Space Shuttle flights.<ref name=STS100 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/shuttle/archives/sts-100/|title=HSF – STS-100 Shuttle Archives|publisher=NASA|accessdate=5 January 2011}}</ref> A later mission in 2002, [[STS-111]], would deliver a movable base platform which would allow the Canadarm2 to have a larger range.
The first visitors to the station during Expedition 2 was the crew of [[STS-100]], when they docked Space Shuttle [[Space Shuttle Endeavour|''Endeavour'']] with the ISS on 21 April 2001. They spent eight days docked to the station. The primary objective of this mission was to deliver and install the [[Canadarm2]] on the ISS, which is a robotic arm similar to the [[Canadarm]] which is used on some Space Shuttle flights.<ref name=STS100 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/shuttle/archives/sts-100/|title=HSF – STS-100 Shuttle Archives|publisher=NASA|access-date=5 January 2011|archive-date=21 August 2010|archive-url=https://web.archive.org/web/20100821132045/http://spaceflight.nasa.gov/shuttle/archives/sts-100/|url-status=dead}}</ref> A later mission in 2002, [[STS-111]], would deliver a movable base platform which would allow the Canadarm2 to have a larger range.

===ISS EP-1===
===ISS EP-1===
[[File:Soyuz TM-32 patch.png|right|200px|EP-1 insignia]]
[[File:Soyuz TM-32 patch.png|right|200px|EP-1 insignia]]
On the day after the Space Shuttle undocked, the Russian spacecraft [[Soyuz TM-32]] docked to the station, carrying two cosmonauts with previous spaceflight experience, as well as [[Dennis Tito]], the first ever [[space tourist]]. This 8 day mission is sometimes referred to as ''ISS EP-1'',<ref name=EA-EP1>{{cite web|url=http://www.astronautix.com/flights/issep1.htm|title=ISS EP-1|publisher=Encyclopedia Astronautica|accessdate=5 January 2011}}</ref> ''ISS-2S'',<ref name=SR-2S>{{cite web|url=http://www.spaceref.com/iss/mission/2s.html|title=Mission ISS-2S|publisher=spaceref.com|accessdate=5 January 2011}}</ref> ''Soyuz 2 Taxi Flight'',<ref name=Soyuz2 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/station/crew/exp2/taxi2/index.html|title=Soyuz 2 Taxi Flight Crew|publisher=NASA|accessdate=5 January 2011}}</ref> or simply by its launching spacecraft ''Soyuz TM-32''. The Commander of this visiting mission was [[Kazakhs|Kazakh]] cosmonaut [[Talgat Musabayev]], who had previously been on two long-duration missions aboard the space station ''[[Mir]]'' in the 1990s. The other crew member of ISS EP-1 was [[Yuri Baturin]], who had one other spaceflight, [[Mir EP-4]], which was a visiting mission to ''Mir'' launched with the spacecraft [[Soyuz TM-28]].<ref name=EA-EP4>{{cite web|url=http://www.astronautix.com/flights/mirep4.htm|title=Mir EP-4|publisher=Encyclopedia Astronautica}}</ref> Baturin's first mission occurred during the long-duration mission [[Mir EO-25]], so he and Musabayev had already been in space together prior to ISS EP-1; in fact both were landed with the spacecraft [[Soyuz TM-27]] in August 1998.
On the day after the Space Shuttle undocked, the Russian spacecraft [[Soyuz TM-32]] docked to the station, carrying two cosmonauts with previous spaceflight experience, as well as [[Dennis Tito]], the first ever [[space tourist]]. This 8 day mission is sometimes referred to as ''ISS EP-1'',<ref name=EA-EP1>{{cite web|url=http://www.astronautix.com/flights/issep1.htm|title=ISS EP-1|publisher=Encyclopedia Astronautica|access-date=5 January 2011|url-status=dead|archive-url=https://web.archive.org/web/20101129150324/http://astronautix.com/flights/issep1.htm|archive-date=29 November 2010}}</ref> ''ISS-2S'',<ref name=SR-2S>{{cite web|url=http://www.spaceref.com/iss/mission/2s.html|title=Mission ISS-2S|publisher=spaceref.com|access-date=5 January 2011}}{{Dead link|date=March 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> ''Soyuz 2 Taxi Flight'',<ref name=Soyuz2 group=NASA>{{cite web|url=http://spaceflight.nasa.gov/station/crew/exp2/taxi2/index.html|title=Soyuz 2 Taxi Flight Crew|publisher=NASA|access-date=5 January 2011|archive-date=4 January 2011|archive-url=https://web.archive.org/web/20110104165123/http://spaceflight.nasa.gov/station/crew/exp2/taxi2/index.html|url-status=dead}}</ref> or simply by its launching spacecraft ''Soyuz TM-32''. The Commander of this visiting mission was [[Kazakhs|Kazakh]] cosmonaut [[Talgat Musabayev]], who had previously been on two long-duration missions aboard the space station ''[[Mir]]'' in the 1990s. The other crew member of ISS EP-1 was [[Yuri Baturin]], who had one other spaceflight, [[Mir EP-4]], which was a visiting mission to ''Mir'' launched with the spacecraft [[Soyuz TM-28]].<ref name=EA-EP4>{{cite web|url=http://www.astronautix.com/flights/mirep4.htm|title=Mir EP-4|publisher=Encyclopedia Astronautica|url-status=dead|archive-url=https://web.archive.org/web/20111011182802/http://astronautix.com/flights/mirep4.htm|archive-date=11 October 2011}}</ref> Baturin's first mission occurred during the long-duration mission [[Mir EO-25]], so he and Musabayev had already been in space together prior to ISS EP-1; in fact both were landed with the spacecraft [[Soyuz TM-27]] in August 1998.


===STS-104===
===STS-104===
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;First spacewalk; Joint Airlock Installation
;First spacewalk; Joint Airlock Installation


The first spacewalk occurred on 15 July, and focused on installation of the Quest Joint Airlock. The spacewalkers helped as Susan Helms, using the station's robotic arm, lifted the new station airlock from Atlantis' payload bay and moved it to the station's Unity module. During much of the 5 hour, 59 minute spacewalk, Jim Reilly worked from a foot platform attached to the end of the shuttle's robotic arm, operated by Janet Kavandi. After the spacewalk, crew members inside the Station attached connections to the airlock to prevent thermal damage.<ref name="STS104a">{{Cite web|url=http://www.space.com/missionlaunches/missions/sts104_journal-3.html |title=First spacewalk concludes |accessdate=21 October 2008 |publisher=Space.com |year=2001 |author=Jim Banke |deadurl=yes |archiveurl=https://web.archive.org/web/20090213045055/http://www.space.com:80/missionlaunches/missions/sts104_journal-3.html |archivedate=13 February 2009 |df=dmy }}</ref><ref name="STS104b" group=NASA>{{Cite web|url=http://www.shuttlepresskit.com/sts-104/eva15.htm|title=STS-104 Spacewalks: Installing a Spacewalking Portal|accessdate=21 October 2008|publisher=Shuttle Press Kits|year=2001|author=Boeing/NASA/United Space Alliance}}</ref><ref name="STS104f" group=NASA>{{Cite web|url=http://spaceflight.nasa.gov/shuttle/archives/sts-104/eva/|title=STS-104 Extravehicular Activities|accessdate=21 October 2008|publisher=NASA|year=2001|author=NASA}}</ref>
The first spacewalk occurred on 15 July, and focused on installation of the Quest Joint Airlock. The spacewalkers helped as Susan Helms, using the station's robotic arm, lifted the new station airlock from Atlantis' payload bay and moved it to the station's Unity module. During much of the 5 hour, 59 minute spacewalk, Jim Reilly worked from a foot platform attached to the end of the shuttle's robotic arm, operated by Janet Kavandi. After the spacewalk, crew members inside the Station attached connections to the airlock to prevent thermal damage.<ref name="STS104a">{{Cite web |url=http://www.space.com/missionlaunches/missions/sts104_journal-3.html |title=First spacewalk concludes |access-date=21 October 2008 |publisher=[[Space.com]] |year=2001 |author=Jim Banke |url-status=dead |archive-url=https://web.archive.org/web/20090213045055/http://www.space.com/missionlaunches/missions/sts104_journal-3.html |archive-date=13 February 2009 }}</ref><ref name="STS104b" group=NASA>{{Cite web|url=http://www.shuttlepresskit.com/sts-104/eva15.htm|title=STS-104 Spacewalks: Installing a Spacewalking Portal|access-date=21 October 2008|publisher=Shuttle Press Kits|year=2001|author=Boeing/NASA/United Space Alliance|url-status=dead|archive-url=https://web.archive.org/web/20090106191015/http://www.shuttlepresskit.com/STS-104/eva15.htm|archive-date=6 January 2009}}</ref><ref name="STS104f" group=NASA>{{Cite web|url=http://spaceflight.nasa.gov/shuttle/archives/sts-104/eva/|title=STS-104 Extravehicular Activities|access-date=21 October 2008|publisher=NASA|year=2001|author=NASA|archive-date=17 September 2008|archive-url=https://web.archive.org/web/20080917071250/http://www.spaceflight.nasa.gov/shuttle/archives/sts-104/eva/|url-status=dead}}</ref>


;Second spacewalk
;Second spacewalk


The second spacewalk which happened on 18 July, lasted 6 hours, 29 minutes. The internal hatches between the shuttle and station were closed at the end of Flight Day 6 so Atlantis' cabin pressure could be lowered in preparation for the second spacewalk. The major objective was to attach and connect an oxygen and a nitrogen tank. Susan Helms operated the station arm to lift the tanks from the shuttle's payload bay and maneuver them to the new airlock. At the airlock, Mike Gernhardt and Jim Reilly latched the tanks in place and connected cables and hoses. The spacewalkers were able to get ahead of schedule and also install another oxygen tank, leaving only one tank to be connected on the third spacewalk.<ref name="STS104a"/><ref name="STS104f" group=NASA/><ref name="STS104c" group=NASA>{{Cite web|url=http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-104.html|title=STS-104|accessdate=21 October 2008|publisher=NASA|year=2001|author=NASA}}</ref>
The second spacewalk which happened on 18 July, lasted 6 hours, 29 minutes. The internal hatches between the shuttle and station were closed at the end of Flight Day 6 so Atlantis' cabin pressure could be lowered in preparation for the second spacewalk. The major objective was to attach and connect an oxygen and a nitrogen tank. Susan Helms operated the station arm to lift the tanks from the shuttle's payload bay and maneuver them to the new airlock. At the airlock, Mike Gernhardt and Jim Reilly latched the tanks in place and connected cables and hoses. The spacewalkers were able to get ahead of schedule and also install another oxygen tank, leaving only one tank to be connected on the third spacewalk.<ref name="STS104a"/><ref name="STS104f" group=NASA/><ref name="STS104c" group=NASA>{{Cite web|url=http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-104.html|title=STS-104|access-date=21 October 2008|publisher=NASA|year=2001|author=NASA|archive-date=21 September 2008|archive-url=https://web.archive.org/web/20080921112903/http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-104.html|url-status=live}}</ref>


;Third spacewalk
;Third spacewalk


The third spacewalk, which occurred on 21 July, was the first spacewalk based out of the new Quest Joint Airlock, and lasted 4 hours, 2 minutes. Primary objective was to install the final nitrogen tank outside the airlock.<ref name="STS104f" group=NASA/><ref name="quest1">{{Cite web|url=http://www.space.com/missionlaunches/missions/sts104_eva3b_010721-1.html |title=Quest Airlock Makes Orbital Debut as Astronauts Wrap Up Station Construction Work |accessdate=21 October 2008 |publisher=Space.com |year=2001 |author=Todd Halvorson |deadurl=yes |archiveurl=https://web.archive.org/web/20090213044127/http://www.space.com:80/missionlaunches/missions/sts104_eva3b_010721-1.html |archivedate=13 February 2009 |df=dmy }}</ref><ref name="STS104d">{{Cite web|url=http://www.space.com/missionlaunches/missions/sts104_journal-6.html|title=Historic milestone at Alpha|accessdate=21 October 2008|publisher=Space.com|year=2001|author=Jim Banke}}</ref> This spacewalk tested a new protocol developed by former commercial diver Mike Gernhardt: essentially exercising while breathing oxygen to purge nitrogen from the spacewalkers' bodies.<ref>{{cite web|url=http://www.space.com/missionlaunches/missions/sts104_journal-6.html|title=Third spacewalk on schedule|publisher=Space.com}}</ref>
The third spacewalk, which occurred on 21 July, was the first spacewalk based out of the new Quest Joint Airlock, and lasted 4 hours, 2 minutes. Primary objective was to install the final nitrogen tank outside the airlock.<ref name="STS104f" group=NASA/><ref name="quest1">{{Cite web |url=http://www.space.com/missionlaunches/missions/sts104_eva3b_010721-1.html |title=Quest Airlock Makes Orbital Debut as Astronauts Wrap Up Station Construction Work |access-date=21 October 2008 |publisher=Space.com |year=2001 |author=Todd Halvorson |url-status=dead |archive-url=https://web.archive.org/web/20090213044127/http://www.space.com/missionlaunches/missions/sts104_eva3b_010721-1.html |archive-date=13 February 2009 }}</ref><ref name="STS104d">{{Cite web|url=http://www.space.com/missionlaunches/missions/sts104_journal-6.html|title=Historic milestone at Alpha|access-date=21 October 2008|publisher=Space.com|year=2001|author=Jim Banke|url-status=dead|archive-url=https://web.archive.org/web/20090523131627/https://www.space.com/missionlaunches/missions/sts104_journal-6.html|archive-date=23 May 2009}}</ref> This spacewalk tested a new protocol developed by former commercial diver Mike Gernhardt: essentially exercising while breathing oxygen to purge nitrogen from the spacewalkers' bodies.<ref>{{cite web|url=http://www.space.com/missionlaunches/missions/sts104_journal-6.html|title=Third spacewalk on schedule|publisher=Space.com|url-status=dead|archive-url=https://web.archive.org/web/20090523131627/https://www.space.com/missionlaunches/missions/sts104_journal-6.html|archive-date=23 May 2009}}</ref>


===Undocking and landing===
===Undocking and landing===
{{main|STS-105}}
{{main|STS-105}}
In August, Space Shuttle ''Discovery'' returned to the station during the mission [[STS-105]], which carried the three Expedition 2 crew members back down to Earth. They undocked from the station on 20 August 2001, marking the end of the Expedition 2 increment.
In August, Space Shuttle ''Discovery'' returned to the station during the mission [[STS-105]], which carried the three Expedition 2 crew members back down to Earth. They undocked from the station on 20 August 2001, marking the end of the Expedition 2 increment.<ref>{{cite web|title=Space Station 20th: STS-105 Exchanges Expedition 2 and 3 Crews, Resupplies Space Station|date=18 August 2021 |url=https://www.nasa.gov/feature/space-station-20th-sts-105-exchanges-expedition-2-and-3-crews-resupplies-space-station|publisher=NASA|access-date=12 December 2022}}</ref>


==Mission patch==
==Mission patch==
The International Space Station Expedition Two patch depicts the Space Station as it appeared during the time the second crew was on board. The Station flying over the Earth represents the overall reason for having a space station: to benefit the world through scientific research and international cooperation in space. The number 2 is for the second expedition and is enclosed in the Cyrillic MKS and Latin ISS which are the respective Russian and English abbreviations for the International Space Station. The United States and Russian flags show the nationalities of the crew indicating the joint nature of the program. When asked about the stars in the background, a crew spokesperson said they "...represent the thousands of space workers throughout the ISS partnership who have contributed to the successful construction of our International Space Station."<ref name=PatchBlurb group=NASA>{{cite web|url=http://spaceflight.nasa.gov/gallery/images/station/crew-2/html/iss02-s-001.html|title=International Space Station Imagery (Expedition 2 patch)|publisher=NASA}}</ref>
The International Space Station Expedition Two patch depicts the Space Station as it appeared during the time the second crew was on board. The Station flying over the Earth represents the overall reason for having a space station: to benefit the world through scientific research and international cooperation in space. The number 2 is for the second expedition and is enclosed in the Cyrillic MKS and Latin ISS which are the respective Russian and English abbreviations for the International Space Station. The United States and Russian flags show the nationalities of the crew indicating the joint nature of the program. When asked about the stars in the background, a crew spokesperson said they "...represent the thousands of space workers throughout the ISS partnership who have contributed to the successful construction of our International Space Station."<ref name=PatchBlurb group=NASA>{{cite web|url=http://spaceflight.nasa.gov/gallery/images/station/crew-2/html/iss02-s-001.html|title=International Space Station Imagery (Expedition 2 patch)|publisher=NASA|access-date=5 January 2011|archive-date=31 December 2010|archive-url=https://web.archive.org/web/20101231123225/http://spaceflight.nasa.gov/gallery/images/station/crew-2/html/iss02-s-001.html|url-status=dead}}</ref>


==Science activities==
==Science activities==


[[File:Physics of Colloids in Space (PCS) experiment on the International Space Station - 2001.jpg|right|thumb|220px|An early image in Experiment of Physics of Colloids in Space (EXPPCS), taken during Expedition 2. It shows the diffraction pattern of a colloidal crystal made from [[Poly(methyl methacrylate)|polymethyl methacrylate]] spheres index matched to the solvent|alt=Photo of a circular dish containing a rainbow like pattern.]] Two science racks, known as EXPRESS Racks No. 1 and 2, were delivered to the station in April aboard [[STS-100]]. One of the experiments on EXPRESS Rack No. 2 was the Experiment of Physics of [[Colloid]]s in Space.<ref group=NASA name=EXPPCS>{{cite web|url=http://www.nasa.gov/centers/glenn/about/fs12grc.html|title=Experiment of Physics of Colloids in Space (EXPPCS)|publisher=[[Glenn Research Center]]|accessdate=29 October 2010}}</ref> Several different colloid mixtures were studied, and the analysis is still underway.<ref group=NASA name=EXPPCS2>{{cite web|url=http://www.nasa.gov/mission_pages/station/research/experiments/EXPPCS.html|title=EXPRESS Physics of Colloids in Space (EXPPCS)|publisher=NASA|date=19 October 2010|accessdate=29 October 2010}}</ref>
[[File:Physics of Colloids in Space (PCS) experiment on the International Space Station - 2001.jpg|right|thumb|220px|An early image in Experiment of Physics of Colloids in Space (EXPPCS), taken during Expedition 2. It shows the diffraction pattern of a colloidal crystal made from [[Poly(methyl methacrylate)|polymethyl methacrylate]] spheres index matched to the solvent|alt=Photo of a circular dish containing a rainbow like pattern.]] Two science racks, known as EXPRESS Racks No. 1 and 2, were delivered to the station in April aboard [[STS-100]]. One of the experiments on EXPRESS Rack No. 2 was the Experiment of Physics of [[Colloid]]s in Space.<ref group=NASA name=EXPPCS>{{cite web|url=http://www.nasa.gov/centers/glenn/about/fs12grc.html|title=Experiment of Physics of Colloids in Space (EXPPCS)|publisher=[[Glenn Research Center]]|access-date=29 October 2010|archive-date=11 November 2010|archive-url=https://web.archive.org/web/20101111035433/http://www.nasa.gov/centers/glenn/about/fs12grc.html|url-status=live}}</ref> Several different colloid mixtures were studied, and the analysis is still underway.<ref group=NASA name=EXPPCS2>{{cite web|url=http://www.nasa.gov/mission_pages/station/research/experiments/EXPPCS.html|title=EXPRESS Physics of Colloids in Space (EXPPCS)|publisher=NASA|date=19 October 2010|access-date=29 October 2010|archive-date=25 November 2010|archive-url=https://web.archive.org/web/20101125113945/http://www.nasa.gov/mission_pages/station/research/experiments/EXPPCS.html|url-status=dead}}</ref>


==References==
==References==
{{Reflist|2}}
{{Reflist}}


===NASA===
===NASA===
Line 131: Line 134:


==External links==
==External links==
{{commonscat|ISS Expedition 2}}
{{commons category|ISS Expedition 2}}
* [http://spaceflight.nasa.gov/gallery/images/station/crew-2/ndxpage1.html Expedition 2 Photography]
* [https://web.archive.org/web/19991129023625/http://spaceflight.nasa.gov/gallery/images/station/crew-2/ndxpage1.html Expedition 2 Photography]


{{ISS expeditions}}
{{ISS expeditions}}

⚫
{{Use dmy dates|date=April 2012}}


[[Category:Expeditions to the International Space Station|Expedition 02]]
[[Category:Expeditions to the International Space Station|Expedition 02]]

Latest revision as of 03:26, 2 September 2024

Expedition 2
Aft view of the International Space Station in April 2001, a month into Expedition 2.
Mission typeLong-duration expedition
Mission duration163 days, 8 hours, 13 minutes (at ISS)
167 days, 6 hours, 41 minutes (launch to landing)[NASA 1]
Distance travelled111,152,720 kilometres (69,067,100 mi)
Orbits completed2,635[1]
Expedition
Space stationInternational Space Station
Began10 March 2001 (2001-03-10)
Ended20 August 2001 (2001-08-21)
Arrived aboardSTS-102
Space Shuttle Discovery
Departed aboardSTS-105[1]
Space Shuttle Discovery
Crew
Crew size3
MembersYury Usachev
Susan Helms
James Voss
EVAs1
EVA duration19 minutes

Expedition 2 mission patch

L-R: James Voss, Yury Usachev, and Susan Helms

Expedition 2 (also called ISS EO-2[2]) was the second long-duration spaceflight aboard the International Space Station, immediately following Expedition 1. Its three-person crew stayed aboard the station from March to August 2001. In addition to station maintenance, the crew assisted in several station assembly missions, welcomed the first space tourist Dennis Tito, and conducted some scientific experiments.

The crew consisted of one Russian, Commander Yury Usachev, and two American flight engineers Susan Helms and James Voss. The three had been to the station briefly in the previous year, during the 10-day mission STS-101 in May 2000.

The Expedition 2 crew was brought to the station aboard Space Shuttle Discovery during mission STS-102. The Expedition's increment began when Discovery docked on 10 March 2001, bringing Expedition 1 to an end.[NASA 1] In addition to the Space Shuttle flights which brought the crew to and from the station, there were two visiting Space Shuttle missions and one Soyuz mission which docked with the ISS during Expedition Two. In August Discovery returned to rotate the long-duration crews again, bringing the crew of the next expedition. The Expedition 2 increment ended when Discovery undocked from the station on 20 August 2001.[NASA 1]

Crew

[edit]
Expedition 2 promotional poster

All three crew members had visited the International Space Station together in May 2000 aboard STS-101. In addition to this spaceflight, the Expedition 2 Commander Yuri Usachev also had two other spaceflights, both of which were long-duration missions aboard Mir (EO-15 and EO-21).[NASA 2]

In addition to STS-101, flight engineer Susan Helms had three other spaceflights, all of which were Space Shuttle missions (STS-54, STS-64, STS-78).[NASA 3] James Voss also had three other spaceflights, all of which were Space Shuttle missions (STS-44, STS-53, STS-69).[NASA 4]

Prime crew
Position Crew
Commander Russia Yury Usachev, RSA
Fourth and last spaceflight
Flight Engineer United States James Voss, NASA
Fifth and last spaceflight
Flight Engineer United States Susan Helms, NASA
Fifth and last spaceflight
Backup crew
Position Crew
Commander Russia Yury Onufrienko, RSA
Flight Engineer 1 United States Daniel W. Bursch, NASA
Flight Engineer 2 United States Carl E. Walz, NASA

Mission highlights

[edit]
James S. Voss, Expedition Two flight engineer, looks over an atlas in the Zvezda Service Module. (NASA)

Expedition 2, the second long-term crew for the International Space Station arrived in March 2001. They returned to Earth on mission STS-105, 22 August 2001 after having spent 163 days aboard the station and 167 days in space. Only Voss performed a spacewalk on STS-101, along with Jeffrey Williams.

During this expedition, research facilities launched to the Space Station included a Human Research Facility, two EXPRESS (Expedite the Processing of Experiments to the Space Station) Racks, one of which contains the Active Rack Isolation System and the Payload Equipment Restraint System. They also prepared the Destiny laboratory to enable upcoming experiments to be conducted.[1]

A major focus was on gaining a better understanding of how to protect crew members from radiation while working and living in space. Radiation exposure in high doses over long periods of time can damage human cells and cause cancer or injury to the central nervous system.[NASA 5]

Launch and docking

[edit]
Main article: STS-102

The three-member Expedition 2 crew successfully launched on 8 March 2001 on Space Shuttle Discovery during mission STS-102. They docked with the International Space Station on 10 March, but the Expedition 2 increment didn't begin until the previous crew undocked from the station on 18 March.

STS-100

[edit]
Main article: STS-100

The first visitors to the station during Expedition 2 was the crew of STS-100, when they docked Space Shuttle Endeavour with the ISS on 21 April 2001. They spent eight days docked to the station. The primary objective of this mission was to deliver and install the Canadarm2 on the ISS, which is a robotic arm similar to the Canadarm which is used on some Space Shuttle flights.[NASA 6] A later mission in 2002, STS-111, would deliver a movable base platform which would allow the Canadarm2 to have a larger range.

ISS EP-1

[edit]
EP-1 insignia
EP-1 insignia

On the day after the Space Shuttle undocked, the Russian spacecraft Soyuz TM-32 docked to the station, carrying two cosmonauts with previous spaceflight experience, as well as Dennis Tito, the first ever space tourist. This 8 day mission is sometimes referred to as ISS EP-1,[3] ISS-2S,[4] Soyuz 2 Taxi Flight,[NASA 7] or simply by its launching spacecraft Soyuz TM-32. The Commander of this visiting mission was Kazakh cosmonaut Talgat Musabayev, who had previously been on two long-duration missions aboard the space station Mir in the 1990s. The other crew member of ISS EP-1 was Yuri Baturin, who had one other spaceflight, Mir EP-4, which was a visiting mission to Mir launched with the spacecraft Soyuz TM-28.[5] Baturin's first mission occurred during the long-duration mission Mir EO-25, so he and Musabayev had already been in space together prior to ISS EP-1; in fact both were landed with the spacecraft Soyuz TM-27 in August 1998.

STS-104

[edit]
Main article: STS-104

In July, Space Shuttle Atlantis docked with the station for an eight-day visit as a part of STS-104. The main objective of this mission was to install the Quest Joint Airlock onto the station.

The STS-104 crew performed 3 spacewalks.

First spacewalk; Joint Airlock Installation

The first spacewalk occurred on 15 July, and focused on installation of the Quest Joint Airlock. The spacewalkers helped as Susan Helms, using the station's robotic arm, lifted the new station airlock from Atlantis' payload bay and moved it to the station's Unity module. During much of the 5 hour, 59 minute spacewalk, Jim Reilly worked from a foot platform attached to the end of the shuttle's robotic arm, operated by Janet Kavandi. After the spacewalk, crew members inside the Station attached connections to the airlock to prevent thermal damage.[6][NASA 8][NASA 9]

Second spacewalk

The second spacewalk which happened on 18 July, lasted 6 hours, 29 minutes. The internal hatches between the shuttle and station were closed at the end of Flight Day 6 so Atlantis' cabin pressure could be lowered in preparation for the second spacewalk. The major objective was to attach and connect an oxygen and a nitrogen tank. Susan Helms operated the station arm to lift the tanks from the shuttle's payload bay and maneuver them to the new airlock. At the airlock, Mike Gernhardt and Jim Reilly latched the tanks in place and connected cables and hoses. The spacewalkers were able to get ahead of schedule and also install another oxygen tank, leaving only one tank to be connected on the third spacewalk.[6][NASA 9][NASA 10]

Third spacewalk

The third spacewalk, which occurred on 21 July, was the first spacewalk based out of the new Quest Joint Airlock, and lasted 4 hours, 2 minutes. Primary objective was to install the final nitrogen tank outside the airlock.[NASA 9][7][8] This spacewalk tested a new protocol developed by former commercial diver Mike Gernhardt: essentially exercising while breathing oxygen to purge nitrogen from the spacewalkers' bodies.[9]

Undocking and landing

[edit]
Main article: STS-105

In August, Space Shuttle Discovery returned to the station during the mission STS-105, which carried the three Expedition 2 crew members back down to Earth. They undocked from the station on 20 August 2001, marking the end of the Expedition 2 increment.[10]

Mission patch

[edit]

The International Space Station Expedition Two patch depicts the Space Station as it appeared during the time the second crew was on board. The Station flying over the Earth represents the overall reason for having a space station: to benefit the world through scientific research and international cooperation in space. The number 2 is for the second expedition and is enclosed in the Cyrillic MKS and Latin ISS which are the respective Russian and English abbreviations for the International Space Station. The United States and Russian flags show the nationalities of the crew indicating the joint nature of the program. When asked about the stars in the background, a crew spokesperson said they "...represent the thousands of space workers throughout the ISS partnership who have contributed to the successful construction of our International Space Station."[NASA 11]

Science activities

[edit]
Photo of a circular dish containing a rainbow like pattern.
An early image in Experiment of Physics of Colloids in Space (EXPPCS), taken during Expedition 2. It shows the diffraction pattern of a colloidal crystal made from polymethyl methacrylate spheres index matched to the solvent

Two science racks, known as EXPRESS Racks No. 1 and 2, were delivered to the station in April aboard STS-100. One of the experiments on EXPRESS Rack No. 2 was the Experiment of Physics of Colloids in Space.[NASA 12] Several different colloid mixtures were studied, and the analysis is still underway.[NASA 13]

References

[edit]
  1. ^ a b c "ISS: Expedition 2". spacefacts.de. Archived from the original on 21 December 2010. Retrieved 3 January 2011.
  2. ^ "ISS EO-2". Encyclopedia Astronautica. Archived from the original on 29 November 2010. Retrieved 3 January 2011.
  3. ^ "ISS EP-1". Encyclopedia Astronautica. Archived from the original on 29 November 2010. Retrieved 5 January 2011.
  4. ^ "Mission ISS-2S". spaceref.com. Retrieved 5 January 2011.[permanent dead link‍]
  5. ^ "Mir EP-4". Encyclopedia Astronautica. Archived from the original on 11 October 2011.
  6. ^ a b Jim Banke (2001). "First spacewalk concludes". Space.com. Archived from the original on 13 February 2009. Retrieved 21 October 2008.
  7. ^ Todd Halvorson (2001). "Quest Airlock Makes Orbital Debut as Astronauts Wrap Up Station Construction Work". Space.com. Archived from the original on 13 February 2009. Retrieved 21 October 2008.
  8. ^ Jim Banke (2001). "Historic milestone at Alpha". Space.com. Archived from the original on 23 May 2009. Retrieved 21 October 2008.
  9. ^ "Third spacewalk on schedule". Space.com. Archived from the original on 23 May 2009.
  10. ^ "Space Station 20th: STS-105 Exchanges Expedition 2 and 3 Crews, Resupplies Space Station". NASA. 18 August 2021. Retrieved 12 December 2022.

NASA

[edit]

Public Domain This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.

  1. ^ a b c "ISS Expedition Two Crew". NASA. Archived from the original on 22 April 2008. Retrieved 3 January 2011.
  2. ^ "Cosmonaut Bio: Yury Vladimirovich Usachev". NASA. August 2001. Archived from the original on 24 November 2010. Retrieved 4 January 2011.
  3. ^ "Astronaut Bio: Susan J. Helms". NASA. May 2007. Archived from the original on 15 July 2007. Retrieved 4 January 2011.
  4. ^ "Astronaut Bio: James S. Voss". NASA. Archived from the original on 22 September 2018. Retrieved 3 January 2011.
  5. ^ "International Space Station Expedition Two: Science Operations Overview". NASA. March 2001. Archived from the original on 24 November 2010. Retrieved 5 January 2011.
  6. ^ "HSF – STS-100 Shuttle Archives". NASA. Archived from the original on 21 August 2010. Retrieved 5 January 2011.
  7. ^ "Soyuz 2 Taxi Flight Crew". NASA. Archived from the original on 4 January 2011. Retrieved 5 January 2011.
  8. ^ Boeing/NASA/United Space Alliance (2001). "STS-104 Spacewalks: Installing a Spacewalking Portal". Shuttle Press Kits. Archived from the original on 6 January 2009. Retrieved 21 October 2008.
  9. ^ a b c NASA (2001). "STS-104 Extravehicular Activities". NASA. Archived from the original on 17 September 2008. Retrieved 21 October 2008.
  10. ^ NASA (2001). "STS-104". NASA. Archived from the original on 21 September 2008. Retrieved 21 October 2008.
  11. ^ "International Space Station Imagery (Expedition 2 patch)". NASA. Archived from the original on 31 December 2010. Retrieved 5 January 2011.
  12. ^ "Experiment of Physics of Colloids in Space (EXPPCS)". Glenn Research Center. Archived from the original on 11 November 2010. Retrieved 29 October 2010.
  13. ^ "EXPRESS Physics of Colloids in Space (EXPPCS)". NASA. 19 October 2010. Archived from the original on 25 November 2010. Retrieved 29 October 2010.
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