Expedition 24

Expedition 24 was the 24th long-duration mission to the International Space Station (ISS). Expedition 24 initially had two planned spacewalks, one Russian and one American Extra-vehicular Activity (EVA). The U.S. EVA was re-planned and a second U.S. EVA was added.

Crew

;Source: NASA

Backup crew

* Mikhail Tyurin
* Aleksandr Samokutyayev
* Scott J. Kelly
* Andrei Borisenko
* Paolo Nespoli
* Catherine Coleman

Incidents

Ammonia pump module

On 31 July 2010, the Expedition 24 crew was awoken by an alarm on the station. The alarm was caused by a cooling pump that had failed and caused a Remote Power Controller to trip and cut power to some of the International Space Station (ISS). Astronauts Tracy Caldwell Dyson and Doug Wheelock performed some steps to assist ground controllers in re-powering some of the station components such as two main power buses and one Control Moment Gyroscope. After the steps had been completed Capcomm James Kelly told the crew they could go back to bed as all the work required by the crew on the ISS was complete. A short time later, another alarm sounded and awoke the crew, when the ground attempted to restart the pump module.

Docking ring

A failure in the docking ring on the Mini-Research Module 2 (MRM2) Poisk, caused a delay in the planned landing of the Soyuz TMA-18 spacecraft. Soyuz TMA-18 was originally planned to undock and land on 24 September 2010, but instead undocked less than 24 hours later on 25 September 2010. The failure is believed to be due to a faulty indication from a micro-switch on the hatch between the Soyuz and MRM2. A drive gear, which is related to the docking mechanism was also found to have two broken teeth, and is believed to be related to the problem as well.

Spacewalks

Three spacewalks, one in Orlan space suits and two in U.S. Extravehicular Mobility Units (EMUs) were originally planned for Expedition 24. However, additional spacewalking tasks were added to remove and replace a failed ammonia pump module.

‡ denotes spacewalks performed from the ''Pirs'' docking compartment in Russian Orlan suits.

Gallery

Image:TMA-19 Roll Out Expedition 24.jpg, The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan in preparation for the launch of Expedition 24.
Image:Expedition 24 Soyuz TMA-19 Launch.jpg, Soyuz TMA-19 launched on Wednesday, 16 June 2010.
File:ISS-24 Crescent moon and the thin line of Earth's atmosphere.jpg, Amazing picture taken over central Asia
File:Expedition 23-24 landing.jpg, The Soyuz TMA-18 with its main parachute deployed for landing on 25 September 2010.
Image:Soyuz TMA-18 landing site welcome back.jpg, Tracy Caldwell Dyson, Alexander Skvortsov and Mikhail Kornienko sit in chairs outside the Soyuz capsule just minutes after they landed.

References

External links

NASA's Space Station Expeditions page
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{{ISS expeditions

Expeditions to the International Space Station
2010 in spaceflight