Spacelab

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This article is about the space shuttle laboratory. For the space station of the 1970s, see Skylab. For the commercial company which also makes space shuttle laboratories and logistic modules, see SPACEHAB.

Shuttle Columbia during STS-50 with Spacelab Module LM1 and tunnel in its cargo bay.

Spacelab was a reusable laboratory flown into space on the Space Shuttle. It allowed scientists to perform experiments in microgravity in Earth orbit. The laboratory consisted of multiple components, including a pressurized module, an unpressurized carrier and other related hardware.

1 History
2 Description
3 Spacelab missions
4 Other missions
5 References
6 External links

[edit] History

In August 1973, NASA and ESRO (now European Space Agency (ESA)) signed a Memorandum of Understanding to build a science laboratory for use on Space Shuttle flights.^[1] Construction of Spacelab started in 1974 by the ERNO (daughter of VFW-Fokker GmbH, after merger with MBB named MBB/ERNO, and since 2003 part of EADS SPACE Transportation). The first set including lab module, LM1, was given to NASA free of charge by ESA in exchange for flight opportunities for European astronauts. A second module, LM2, was bought by NASA for its own use from ERNO. In addition to the laboratory module, the complete set also included five external pallets for experiments in vacuum, built by British Aerospace (BAe) and a pressurized igloo containing the subsystems needed for the pallet-only flight configuration operation.

Spacelab layout showing tunnel, pressurized Module and Pallet.

Eight flight configurations were qualified though even more could be assembled.

The Spacelab components were used on 25 shuttle flights, but the components were decommissioned in 1998 except the pallets. Science work was to be moved to the International Space Station and Spacehab module, a pressurized carrier similar to the Spacelab Module. A Spacelab Pallet was recommissioned in 2002 for flight on STS-99. The "Spacelab Pallet - Deployable 1 (SLP-D1) with Canadian Special Purpose Dexterous Manipulator, Dextre" was launched on STS-123. "Spacelab Pallet - Deployable 2 (SLP-D2)" is currently scheduled for STS-127.^{[citation needed]}

The LM2 is now on display in the Bremenhalle exhibition in the Bremen Airport of Bremen, Germany.

[edit] Description

Flight Configurations

The Spacelab Module consists of a cylindrical main laboratory configureable as Short or Long Module flown in the rear of the Space Shuttle cargo bay, connected to the crew compartment by a tunnel. The laboratory had an outer diameter of 4.12 m, and each segment a length of 2.7 m. Most of the time two segments were used in forming the Long Module configuration.

The Spacelab Pallet is a U-shaped platform for mounting instrumentation, large instruments, experiments requiring exposure to space, and instruments requiring a large field of view, such as telescopes. The pallet has several hard points for mounting heavy equipment. The pallet can be used in single configuration or stacked end to end in double or triple configurations. Up to five pallets can be configured in the Space Shuttle cargo bay by using a double plus triple pallet.

Other Spacelab elements include the tunnel, Igloo, and the Instrument Pointing System (IPS) tailored to the pallet interfaces for precise pointing to space or earth targets.