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Tranquility (ISS module)

From Wikipedia, the free encyclopedia

Tranquility
Node 3 - Isolated view.jpg
Tranquility in 2011
Module statistics
COSPAR ID2010-004A [1]
Launch date8 February 2010, 09:14:08 UTC [2]
Launch vehicleSpace Shuttle Endeavour
Docked12 February 2010
Mass19,000 kg (42,000 lb)
Length6.706 m (22.00 ft)
Diameter4.48 m (14.7 ft)

Tranquility, also known as Node 3,[3] is a module of the International Space Station (ISS). It contains environmental control systems, life support systems, a toilet, exercise equipment, and an observation cupola.

The European Space Agency (ESA) and the Italian Space Agency (ASI) had Tranquility manufactured by Thales Alenia Space. A ceremony on 20 November 2009 transferred ownership of the module to NASA.[4] On 8 February 2010, NASA launched the module on the Space Shuttle's STS-130 mission.

Design and manufacturing

Interior of Tranquility
Interior of Tranquility
The Tranquility node during initial manufacturing
The Tranquility node during initial manufacturing

Tranquility was built within the ESA-NASA ISS bartering system. ESA committed to build and fund both Harmony and Tranquility as well as the ATV in order to use NASA ISS facilities, fly astronauts on the Shuttle and for other ISS services. ESA teamed up with the Italian Space Agency (ASI) to manufacture both Harmony and Tranquility at Thales Alenia Space in Turin, Italy. The module pressure shell is constructed of 2219 aluminum and its debris shield is made from hardened 6061 aluminum. The metal is heat-treated, enabling it to have similar ballistics resistance to stainless steel.[5]

Tranquility provides six berthing locations with power, data and commanding, thermal and environmental control, and crew access for more attached habitable volumes or for crew transportation vehicles or stowage, or an appropriate combination of all of these. One of the berthing locations is used by the Cupola, which houses a Robotic Work Station inside it to assist in the assembly/maintenance of the ISS, and offers a window for Earth observations. Tranquility was launched with the Cupola attached to its port-facing Common Berthing Mechanism (CBM). After mating Tranquility with the port CBM of Unity, the Cupola was transferred to the nadir facing port of Tranquility where it will stay.

The module has three redundant berthing ports that were not scheduled to be used prior to the end of the Space Shuttle program, although there is a Power Data Grapple Fixture reserved for the Special Purpose Dexterous Manipulator (Dextre), which is located on the zenith berthing location. In the current ISS configuration Tranquility is docked to the port berthing location of Unity. As such, the three unused berthing locations of Tranquility were disabled as the node's close proximity to other segments would prohibit the port's direct use for cargo spacecraft or using the docking module PMA-3, which was relocated from Harmony to the port berthing location of Tranquility for storage. At the time, the move of PMA-3 to the port location of Tranquility was required because NASA decided to leave the Multi-Purpose Logistics Module (MPLM) Leonardo permanently attached to the ISS, which will be located at the nadir side of Unity.

In 2001, NASA considered changing the design of the module. This idea for an extended or "stretched" module,[6] was a result of the deferral/deletion of the Habitation Module. The stretched module would have held 16 racks, compared with the baseline capacity of eight racks. This modification was not funded and the plans were abandoned.

Purpose

Space toilet inside Node 3, after relocation from the U.S. lab
Space toilet inside Node 3, after relocation from the U.S. lab

The module's life-support system (ECLSS) recycles waste water for crew use and generates oxygen for the crew to breathe. In addition, Tranquility contains an atmosphere revitalization system to remove contaminants from the atmosphere and monitor/control the atmosphere constituents of the ISS. Tranquility also contains a Waste and Hygiene Compartment (toilet) for supporting the on-board crew.

Tranquility is primarily used for exercise, storage, and robotics work in connection with Cupola.

Launch, berthing, and connections to other station components

Tranquility in the SSPF
Tranquility in the SSPF

Tranquility was located in the clean room at the Thales Alenia Space, Turin site until 2009.[7] It was shipped to Kennedy Space Center (KSC) on 17 May 2009 and arrived in Florida on 20 May 2009. It was officially welcomed to KSC on 8 June 2009.[8]

Tranquility was launched on 8 February 2010 on board the STS-130 mission flown by Endeavour.[9] It was berthed to the port side of Unity on 12 February 2010.[10]

To accommodate the SpaceX Dragon V2 and Boeing Starliner Commercial Crew transports expected to be operational by 2017, ISS crews began work in March 2015 to configure the station. As part of this work, Pressurized Mating Adapter-3 on the port side of Tranquility will be moved to the zenith port of the Harmony module, above Pressurized Mating Adapter-2, to serve as a backup docking port for these vehicles. In addition, on 27 May 2015 the Leonardo Permanent Multipurpose Module was moved from the nadir of Unity, to the forward port side of Tranquility to free up Unity as a backup port for Commercial Resupply Services cargo spacecraft from SpaceX and Orbital Sciences.[11][12]

In April 2016, as part of the cargo payload from SpaceX CRS-8, the Bigelow Expandable Activity Module (BEAM) was attached to Tranquility on its aft port for a two-year duration.[13]

Port
Starboard
Forward
Aft
Nadir

Naming contest

NASA held an online poll to name Node 3. Users were allowed to choose from among four provided names (Earthrise, Legacy, Serenity, and Venture), or to suggest their own.[15] In early voting, fans of the science fiction TV series Firefly boosted "Serenity", also the name of the show and film's eponymous spacecraft, to the top with 86%.[16] On 3 March 2009, episode of The Colbert Report, host Stephen Colbert instructed his viewers to suggest "Colbert" as the name for Node 3 in the online poll.[17]

Following Colbert's call to have the node named after him, several other groups attempted to influence the vote. For example, a number of different environmental groups promoted the name "Amazonia", after the Amazon Rainforest. They argued that the name was more appropriate given that Node 3 will include the station's environmental control systems.[18] Humorist Dave Barry urged readers of his blog to name the node "Buddy", which finished as the sixth most popular user-suggested name.[19] Gaia Online asked its users to "Send Gaia to Space" by naming the node "Gaia", referring to the Greek goddess of the planet Earth,[20] and "Gaia" finished third among the user-suggested names.[19] Other popular user suggestions included "myYearbook", "SocialVibe", "Ubuntu", and the name of Scientology's galactic overlord: "Xenu".[19]

"Serenity" was the top choice among the NASA-provided names, with 70% of the vote, but finished second overall, losing to "Colbert" by more than 40,000 votes.[19] The naming contest rules, however, state that although the poll results will be taken into account, NASA has ultimate discretion in choosing an appropriate name for the node.[15] On 6 April 2009, Stephen Colbert, in jest, threatened a lawsuit if the node was not named after him.[21] In addition, United States Congressman Chaka Fattah stated that he believes that paying attention to democracy and voting results should not be limited to earthbound organizations so he planned to use congressional power to force NASA to honor the winning Colbert write-in votes.[22]

On 14 April 2009, astronaut Sunita Williams appeared on The Colbert Report, and announced the name of the node would be Tranquility. The name was chosen in honor of the 40th Anniversary of the first lunar landing of Apollo 11 on the Sea of Tranquility.[23] However, the treadmill the astronauts use for exercise has been named "C.O.L.B.E.R.T." for "Combined Operational Load Bearing External Resistance Treadmill" and is located in Tranquility.[24] Colbert was thrilled and happily accepted this offer. The treadmill traveled to space aboard Space Shuttle mission STS-128 on 28 August 2009, for eventual installation in the Tranquility node during STS-130.

Image gallery

See also

References

  1. ^ "Display: Tranquility 2010-004A". NASA. 14 May 2020. Retrieved 31 January 2021. This article incorporates text from this source, which is in the public domain.
  2. ^ "Launch Log". Jonathan's Space Report. Retrieved 31 January 2021.
  3. ^ "ESA - Node 3: Connecting module". Retrieved 2 July 2015.
  4. ^ "NASA Receives Tranquility". NASA. 23 October 2010. Retrieved 12 August 2013.
  5. ^ "Node-3" (PDF). ESA. Retrieved 9 June 2020.
  6. ^ [1]
  7. ^ "Space Shuttle astronauts visit Thales Alenia Space in Turin". Skycontrol. Archived from the original on 16 March 2009.
  8. ^ "European-built ISS module welcomed to KSC". ESA.
  9. ^ "NASA - Consolidated Launch Manifest". NASA. Retrieved 4 March 2008. This article incorporates text from this source, which is in the public domain.
  10. ^ "STS-130 Mission Status Center". Spaceflight Now.
  11. ^ "Module Relocated Prepping Station for Commercial Crew | Space Station". blogs.nasa.gov. NASA. Retrieved 27 May 2015. This article incorporates text from this source, which is in the public domain.
  12. ^ "EVA-30 concludes latest ISS commercial crew preparations". NASASpaceFlight.com.
  13. ^ "NASA to launch Expandable Habitat to International Space station". Clarksville Online.
  14. ^ Foust, Jeff (12 August 2019). "NASA planning to keep BEAM module on ISS for the long haul". SpaceNews. Retrieved 27 February 2020.
  15. ^ a b "Help NASA Name Node 3! - Contest Rules". NASA. Archived from the original on 23 February 2009. Retrieved 23 March 2008. This article incorporates text from this source, which is in the public domain.
  16. ^ Cynthia (2 March 2008). "Help NASA Name a Node". SF Universe. Archived from the original on 15 May 2009.
  17. ^ "Name the NASA Module After Stephen". colbertnation.com. 3 March 2008. Retrieved 4 March 2008.
  18. ^ "Amazonia vs. Colbert". Amazoniavscolbertproject. Retrieved 4 March 2008.
  19. ^ a b c d "Help NASA Name Node 3!". NASA. Retrieved 23 March 2008. This article incorporates text from this source, which is in the public domain.
  20. ^ "Let's send Gaia to SPACE!". gaiaonline.com. Retrieved 12 March 2009.
  21. ^ "Space Module: Colbert - Urine Recycling Room". The Colbert Report. Season 5. 8 April 2009. Comedy Central. CS1 maint: discouraged parameter (link)
  22. ^ Mark, Roy (26 March 2009). "Lawmaker Backs Stephen Colbert's NASA Win". eWeek. Retrieved 31 March 2009.
  23. ^ "Station Module Named 'Tranquility' to Honor Apollo 11". NASA. Retrieved 1 December 2009. This article incorporates text from this source, which is in the public domain.
  24. ^ "NASA names space module for moon base ... not Colbert". collectSPACE.

External links

This page was last edited on 29 April 2021, at 12:43
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