STS-131
Space Shuttle Discovery launches from Kennedy Space Center, 5 April 2010
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| Mission type | ISS logistics |
|---|---|
| Operator | NASA |
| COSPAR ID | 2010-012A |
| SATCAT no. | 36507 |
| Mission duration | 15 days 2 hours, 47 min, 11 seconds |
| Distance travelled | 10,029,810 kilometres (6,232,235 mi) |
| Orbits completed | 238 |
| Spacecraft properties | |
| Spacecraft | Space Shuttle Discovery |
| Launch mass | 2,051,031 kilograms (4,521,749 lb)(total) 121,047 kilograms (266,864 lb) (orbiter) |
| Landing mass | 102,039 kilograms (224,957 lb) |
| Crew | |
| Crew size | 7 |
| Members |
Alan Poindexter James Dutton Richard Mastracchio Dorothy M. Metcalf-Lindenburger Stephanie Wilson Naoko Yamazaki Clayton Anderson |
| Start of mission | |
| Launch date | 5 April 2010, 10:21:22 UTC |
| Launch site | Kennedy LC-39A |
| End of mission | |
| Landing date | 20 April 2010, 13:08:35 UTC |
| Landing site | Kennedy SLF Runway 15 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee | 320 kilometres (200 mi) |
| Apogee | 346 kilometres (215 mi) |
| Inclination | 51.6 degrees |
| Period | 90 minutes |
| Docking with ISS | |
| Docking port |
PMA-2 (Harmony forward) |
| Docking date | 7 April 2010, 07:44 UTC |
| Undocking date | 17 April 2010, 12:52 UTC |
| Time docked | 10 days, 5 hours, 8 minutes |
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 Seated: James Dutton (left) Alan Poindexter (right), Standing (l-r): Rick Mastracchio, Stephanie Wilson, Dorothy Metcalf-Lindenburger, Naoko Yamazaki (JAXA) and Clayton Anderson |
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STS-131 (ISS assembly flight 19A) was a NASA Space Shuttle mission to the International Space Station (ISS). Space Shuttle Discovery launched on 5 April 2010 at 6:21 am from Kennedy Space Center's launch pad 39A, and landed at 9:08 am on 20 April 2010 on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. The mission marked the longest flight for space shuttle Discovery.
The primary payload was a Multi-Purpose Logistics Module loaded with supplies and equipment for the International Space Station. The mission also removed and replaced an ammonia tank assembly outside the station on the S1 truss. STS-131 furthermore carried several on-board payloads; this mission had the most payloads since STS-107.
The primary payload of STS-131 was the Multi-Purpose Logistics Module (MPLM) Leonardo. The MPLM was filled with food and science supplies for the International Space Station (ISS). The MPLM also carried the third and final Minus Eighty Degree Laboratory Freezer for ISS (MELFI), Window Orbital Research Facility (WORF), one Crew Quarters Rack, the Muscle Atrophy Resistive Exercise (MARES) rack, Resupply Stowage Racks (RSRs), as well as Resupply Stowage Platforms (RSPs).
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