page_title: STS-121
section_title: Equipment delivered to the ISS
hierarchical_section_title: STS-121 / Equipment delivered to the ISS
caption_attribution_description: English: ICC STS-121
context_page_description: STS-121 was a 2006 NASA Space Shuttle mission to the International Space Station flown by Space Shuttle Discovery The main purposes of the mission were to test new safety and repair techniques introduced following the Columbia disaster of February 2003 as well as to deliver supplies, equipment and European Space Agency astronaut Thomas Reiter from Germany to the ISS.
  After two weather-related delays, the shuttle successfully launched on Tuesday, 4 July 2006 at 14:37:55 EDT. It was the first and only shuttle launch on the United States' Independence Day. The mission lasted for 13 days before landing at the Kennedy Space Center on 17 July 2006 at 09:14:43 EDT.
  STS-121 was also designated the ISS Assembly Mission ULF 1.1. As the mission followed on from STS-114 in carrying out the recommendations made in response to the Columbia Accident Investigation Board report, it was considered a Return to Flight test mission. Its successful launch and landing led NASA to fully resume regular Space Shuttle launches in the construction of the ISS.
context_section_description: Key items delivered, as part of over 2 tons of cargo included:
  Multi Purpose Logistics Module (MPLM) Leonardo on its 4th flight, 7th MPLM overall, carrying:
  −80 °C Freezer
  This freezer is known as the Minus Eighty Degree Laboratory Freezer for ISS (MELFI). The French-built unit comprises four independent drawers which can be set to operate at different temperatures. Initially, temperatures of −80 °C, −26 °C, and +4 °C will be used during on-orbit ISS operations. Both reagents and samples will be stored in the freezer. As well as storage, the freezer is designed to be used to transport samples to and from the ISS in a temperature controlled environment. The total capacity of the unit is 300 liters.
  The European Modular Cultivation System (EMCS) for biological experiments.
  This consists of a gas tight incubator in which there are two centrifuges, each able to carry four experimental cartridges. Two "Ground controls"—exact copies of the equipment and experiments—will be run on the ground, one in Europe and one at NASA's Ames Research Center.
  New oxygen generation system
  This device is considered a test for an equipment design with potential for use on proposed future long durations to the Moon and Mars. The system will initially run below its maximum capacity, though it is designed for enabling the ISS to support a crew of six in the future. It will supplement the Russian-built Elektron system operating in the Zvezda module.
  New cycling machine for the ISS crew
  A Danish built device, the Cycle Ergometer with Vibration Isolation System (CEVIS)
  Replacement common cabin air assembly heat exchanger used to control the internal air temperature of the ISS.
  All of the above equipment was installed in the Destiny Laboratory Module.
  Also carried in the payload bay was an Integrated Cargo Carrier with the Trailing Umbilical System (TUS) for the Mobile Transporter       
  (returning old one), an EATCS/Pump Module (PM), two Fixed Grapple Bars for PM and TUS relocation during EVA and an LMC carrying the DTO-848 TPS Repair Box.
caption: ICC STS-121
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