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| STS (Space Shuttle) | |
|---|---|
| Name | Space Transportation System |
| Caption | Space Shuttle orbiter with external tank and solid rocket boosters |
| Manufacturer | Rockwell International / Rockwell; Martin Marietta; McDonnell Douglas |
| Country | United States |
| Operator | National Aeronautics and Space Administration |
| First flight | April 12, 1981 |
| Last flight | July 21, 2011 |
| Status | Retired |
STS (Space Shuttle) was the United States reusable orbital spacecraft system operated by National Aeronautics and Space Administration from 1981 to 2011. Conceived under programs influenced by Space Task Group outcomes and Office of Management and Budget policy, the system combined an orbiter, external tank, and solid rocket boosters to conduct crewed missions, satellite deployment, and space station assembly. The program shaped collaborations with United States Air Force, European Space Agency, Canadian Space Agency, and private contractors such as Rockwell International and Martin Marietta.
The program emerged from policy debates involving President Richard Nixon, President Gerald Ford, and later President Jimmy Carter and President Ronald Reagan, connecting to initiatives like Skylab follow-on concepts and the Shuttle policy. Managed by NASA Kennedy Space Center, NASA Johnson Space Center, and NASA Marshall Space Flight Center, the system enabled missions to Low Earth Orbit, supported Hubble Space Telescope servicing, and facilitated construction of the International Space Station. Its workforce included engineers from Boeing, Lockheed Martin, Grumman, and international partners such as Arianespace subcontractors.
The orbiter airframe, built by Rockwell International, incorporated a thermal protection system derived from research by NASA Ames Research Center, NASA Langley Research Center, and the Ames-Dryden Flight Research Facility. Propulsion elements included three main engines developed at Rocketdyne facilities and solid rocket boosters designed by Thiokol (later ATK). The external tank design integrated work by Martin Marietta and structural analysis influenced by Northrop Grumman. Avionics were produced with components from Honeywell and TRW Inc.. Crew accommodations were engineered in collaboration with McDonnell Douglas and life support systems referenced studies from Johnson Space Center Life Support Division. Thermal tiles and reinforced carbon-carbon panels were tested using facilities at Sandia National Laboratories and Los Alamos National Laboratory.
Typical mission profiles were planned by flight controllers at Johnson Space Center Mission Control Center with launch processing at Launch Complex 39 and ascent trajectories coordinated with Patrick Air Force Base and tracking via Merritt Island ground stations and United States Space Force assets. Abort modes referenced procedures developed with the United States Navy and United States Air Force Rescue Coordination Center. On-orbit operations often used robotic arms designed by Canadian Space Agency engineers and payload integration managed by Marshall Space Flight Center Payload Operations teams, while extravehicular activity protocols were standardized by Neutral Buoyancy Laboratory staff and safety oversight by Office of Safety and Mission Assurance.
The inaugural orbiter mission contributed to timelines established by STS-1 (though mission identifiers are not linked here) and subsequent flights included high-profile missions supporting Hubble Space Telescope servicing missions, Magellan deployments, Galileo gravity-assist strategy contributions, and cooperative flights with Spacelab modules developed by European Space Agency and Dornier. Orbiter vehicles such as designs codenamed and built by Rockwell International participated in missions that intersected with Soviet Union era diplomacy, Space Race heritage, and later became central to international cooperation with Roscosmos and JAXA. Launch cadence shifted across decades due to congressional oversight from United States Congress committees, budget decisions influenced by Office of Management and Budget, and programmatic reviews such as those by Government Accountability Office.
The program experienced critical incidents with wide-reaching policy and technical consequences, prompting investigations by panels including commissions chaired by figures linked to Presidential Commission on Space-style reviews and offices such as the National Transportation Safety Board for procedural insights. High-profile accidents led to redesigns in safety culture, engineering standards at contractors like Thiokol and Rockwell International, and influenced congressional hearings led by members of United States House Committee on Science, Space, and Technology and United States Senate Committee on Commerce, Science, and Transportation.
Missions delivered and serviced flagship observatories including Hubble Space Telescope, deployed science platforms like Spacelab and LDEF, and carried experiments from institutions such as Massachusetts Institute of Technology, California Institute of Technology, Stanford University, MIT, Jet Propulsion Laboratory, and Smithsonian Institution. Biological research onboard involved collaborations with National Institutes of Health, Centers for Disease Control and Prevention, European Space Agency life sciences teams, and academic groups at University of Texas, University of Colorado, University of Michigan, and Purdue University. Technology demonstrations supported experiments from Bell Labs, IBM, Intel, and aerospace suppliers such as GE Aviation.
Retirement decisions followed reviews by National Research Council, budget planning from Office of Management and Budget, and presidential direction from President George W. Bush and President Barack Obama. Assets were distributed to museums including Smithsonian National Air and Space Museum, Kennedy Space Center Visitor Complex, Intrepid Sea, Air & Space Museum, and Udvar-Hazy Center while hardware influenced successors like Space Launch System, commercial vehicles from SpaceX, Blue Origin, and Sierra Nevada Corporation's proposals. The program's workforce and data informed programs at NASA Glenn Research Center, NASA Dryden, Aerospace Corporation, and university curricula at Massachusetts Institute of Technology and Georgia Institute of Technology, leaving an enduring imprint on international cooperation with European Space Agency, Canadian Space Agency, JAXA, and Roscosmos.
Category:Spacecraft of the United States Category:Human spaceflight