File:External Tank Details - Space Transportation System, External Tank, Lyndon B. Johnson Space Center, 2101 NASA Parkway, Houston, Harris County, TX HAER TX-116-J (sheet 3 of 3).png

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External Tank Details - Space Transportation System, External Tank, Lyndon B. Johnson Space Center, 2101 NASA Parkway, Houston, Harris County, TX
Photographer
Klimek, Joseph, creator
Title
External Tank Details - Space Transportation System, External Tank, Lyndon B. Johnson Space Center, 2101 NASA Parkway, Houston, Harris County, TX
Description
National Aeronautics and Space Administration, Owner
Depicted place Texas; Harris County; Houston
Date Documentation compiled after 1968
Dimensions 24 x 36 in. (D size)
Current location
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
Accession number
HAER TX-116-J (sheet 3 of 3)
Credit line
This file comes from the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER) or Historic American Landscapes Survey (HALS). These are programs of the National Park Service established for the purpose of documenting historic places. Records consist of measured drawings, archival photographs, and written reports.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Notes
  • Significance: The hydrogen tank, which was the bigger of the two tanks could hold a maximum of about 230,000 pounds of hydrogen or about 390,000 gallons. The smaller oxygen tank, located at the top of the External Tank (ET), could hold about 1,375,000 pounds or 145,000 gallons. During powered flight the ET provided approximately 47,000 gallons per minute of oxygen to all three Space Shuttle Main Engines (SSME) with a 6-to-1 mixture ratio, by weight, of liquid oxygen to liquid hydrogen.

In addition to containing and delivering cryogenic propellants to the SSME the ET also served as the structural support for the attachment of the Orbiter and Solid Rocket Boosters. While the STS stack assembly is sitting on the Mobile Launch Platform (MLP) the ET transfers the weight of the Orbiter and itself to the Solid Rocker Boosters (SRBs) which are attached to the MLP. At launch and ascent the ET absorbs the thrust loads produced by the SSMEs and the SRBs. Despite its size and structural requirements the aluminum alloy skin of the ET is only one eight of an inch thick in most areas. As with all of the other components of the STS stack assembly, the ET has undergone improvements during the STS operational lifespan. Most notably, was two weight-saving redesigns that made the ETs lighter and stronger. The original version of the ET weighed 76,000 pounds empty. The first redesign, flown on STS-6 was the Lightweight ET which dropped 10,000 pounds from the original ETs. The second redesign, flown on STS-91, was the Super Lightweight ET that dropped an additional 7,500 pounds from the Lightweight tank resulting in a weight of 58,500 pounds. ...

  • Survey number: HAER TX-116-J
Source https://www.loc.gov/pictures/item/tx1116.sheet.00003a
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
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Object location29° 33′ 08.45″ N, 95° 05′ 37.35″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current10:15, 21 August 2014Thumbnail for version as of 10:15, 21 August 201414,400 × 9,600 (3.63 MB)Fæ (talk | contribs){{Compressed version|file=File:External_Tank_Details_-_Space_Transportation_System,_External_Tank,_Lyndon_B._Johnson_Space_Center,_2101_NASA_Parkway,_Houston,_Harris_County,_TX_HAER_TX-116-J_(sheet_3_of_3).tif|thumb=nothumb}} =={{int:filedesc}}== {{Ph...

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