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American Space Shuttle

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American Space Shuttle
NameSpace Shuttle
ManufacturerRockwell International
CountryUnited States
OwnerNational Aeronautics and Space Administration
First flight1981-04-12
Last flight2011-07-21
StatusRetired
OrbitLow Earth Orbit
Payload capacity24,400 kg
Crew capacityup to 8

American Space Shuttle

The American Space Shuttle was a reusable orbital spacecraft developed and operated by the National Aeronautics and Space Administration to perform crewed missions, satellite deployment, scientific research, and construction tasks in Low Earth Orbit. Serving as a centerpiece of U.S. human spaceflight from the early 1980s through 2011, the program connected agencies, contractors, and international partners including Rockwell International, Boeing, Lockheed Martin, United Space Alliance, and the European Space Agency. The Shuttle's development, flights, and retirement intersected with major events and figures such as Ronald Reagan, Jimmy Carter, John Young (astronaut), Robert Crippen, Sally Ride, and the crews of STS-1 through STS-135.

Overview

The Shuttle combined reusable elements—an orbiter vehicle, external tank, and solid rocket boosters—into a system enabling repeated access to orbit for missions to destinations like the International Space Station, Hubble Space Telescope, and numerous satellites built by organizations including Lockheed Martin Space Systems, Northrop Grumman, and McDonnell Douglas. Program milestones involved collaboration with entities such as the United States Congress, Department of Defense (United States), Jet Propulsion Laboratory, NASA Ames Research Center, and launch sites including Kennedy Space Center and Vandenberg Air Force Base (plans). Political oversight and funding debates featured presidents and lawmakers from Jimmy Carter to Barack Obama.

Design and Development

Design and development trace to studies by Marshall Space Flight Center, engineering input from Rockwell International, and propulsion work at Rocketdyne, building on heritage from programs like Mercury (spacecraft), Gemini (spacecraft), and Apollo program. The orbiter incorporated avionics and thermal protection systems developed with contractors such as Honeywell International and materials research at NASA Langley Research Center. The concept evolved through reviews by the Office of Management and Budget, reports from the National Research Council, and shuttle configuration decisions debated in hearings chaired by members of the United States Senate and the United States House of Representatives. Test programs involved facilities at Dryden Flight Research Center and flight testing with test pilots such as John Young (astronaut) and Robert Crippen.

Operational History

Operational history began with STS-1 in 1981 and spanned missions conducted from Kennedy Space Center Launch Complex 39 with orbiter names including Enterprise (spacecraft), Columbia (space shuttle), Challenger (space shuttle), Discovery (spacecraft), Atlantis (space shuttle), and Endeavour (space shuttle). The Shuttle supported classified payloads for the National Reconnaissance Office, scientific experiments for NASA Goddard Space Flight Center and the Smithsonian Astrophysical Observatory, and construction and servicing flights for the International Space Station and Hubble Space Telescope. Program operations involved mission control at Johnson Space Center and coordination with international partners like Canadian Space Agency, Italian Space Agency, and Japan Aerospace Exploration Agency.

Missions and Payloads

Missions ranged from test flights to satellite deployment, scientific research, and assembly tasks. Notable payloads and missions included servicing of the Hubble Space Telescope by crews including John Grunsfeld, deployment of satellites built by TRW Inc. and Boeing Satellite Systems, delivery of modules for the International Space Station such as Unity (ISS module) and Destiny (ISS module), and participation in cooperative projects with Roscosmos and the European Space Agency. Cargo manifests included pressurized modules, scientific racks from Marshall Space Flight Center, and payloads for experiments from universities like Massachusetts Institute of Technology and Stanford University. Crewmembers included astronauts awarded distinctions such as the Presidential Medal of Freedom and recipients from astronaut corps like United States Naval Test Pilot School graduates.

Accidents and Investigations

The program experienced two catastrophic accidents: the loss of Challenger (space shuttle) on STS-51-L and the loss of Columbia (space shuttle) on STS-107. Investigations were led by panels including the Rogers Commission after Challenger and the Columbia Accident Investigation Board after Columbia, with technical analyses involving agencies such as National Transportation Safety Board, United States Air Force, and contractors including Thiokol and Boeing. Findings addressed issues in O-ring (engineering) performance, foam shedding from the external tank (spacecraft), and organizational culture critiques citing reports from the Presidential Commission on the Space Shuttle Challenger Accident and recommendations implemented by NASA Office of Safety and Mission Assurance and centers like Marshall Space Flight Center. Resulting policy changes impacted Spaceflight Crew Training, safety protocols at Johnson Space Center, and design modifications involving suppliers such as Alliant Techsystems.

Retirement and Legacy

Retirement following STS-135 in 2011 led to transition plans involving commercial providers such as SpaceX, Orbital Sciences Corporation, Sierra Nevada Corporation, and later programs like the Commercial Crew Program and Commercial Resupply Services. Orbiters were distributed to museums including Smithsonian National Air and Space Museum, Intrepid Sea, Air & Space Museum, Kennedy Space Center Visitor Complex, and California Science Center. The Shuttle left a legacy influencing spacecraft design at Boeing, Northrop Grumman Innovation Systems, and international programs like ESA Ariane research, while shaping policy debates in the United States Congress, collaborations with Roscosmos, and studies at universities including Massachusetts Institute of Technology and Stanford University. Its heritage persists in concepts for reusable launch systems pursued by companies such as Blue Origin and technologies examined at NASA Ames Research Center.

Category:Spacecraft of the United States Category:Human spaceflight programs