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SpaceX CRS-6

From Wikipedia, the free encyclopedia
(Redirected fromCRS-6)
2015 American resupply spaceflight to the ISS
"CRS-6" redirects here. For the Orbital ATK CRS-6 mission, seeCygnus CRS OA-6.

SpaceX CRS-6
The SpaceX CRS-6 Dragon spacecraft as seen from theISS on 17 April 2015
NamesSpX-6
Mission typeISS resupply
OperatorSpaceX
COSPAR ID2015-021AEdit this at Wikidata
SATCATno.40588Edit this on Wikidata
Mission duration36 days, 20 hours, 31 minutes
Spacecraft properties
SpacecraftDragon 1 C108
Spacecraft typeDragon 1
ManufacturerSpaceX
Launch mass6,000 kg (13,000 lb)
DimensionsHeight: 8.1 m (27 ft)
Diameter: 4 m (13 ft)
Start of mission
Launch date14 April 2015, 20:10:41 UTC
RocketFalcon 9 v1.1 (B1015)
Launch siteCape Canaveral,SLC-40
ContractorSpaceX
End of mission
DisposalRecovered
Landing date21 May 2015, 16:42 UTC
Landing sitePacific Ocean
Orbital parameters
Reference systemGeocentric orbit[1]
RegimeLow Earth orbit
Inclination51.65°
Berthing atISS
Berthing portHarmonynadir
RMS capture17 April 2015, 10:55 UTC
Berthing date17 April 2015, 13:29 UTC
Unberthing date21 May 2015, 09:29 UTC
RMS release21 May 2015, 11:04 UTC
Time berthed33 days, 20 hours
Cargo
Mass2,015 kg (4,442 lb)[2]
Pressurised2,015 kg (4,442 lb)

NASA SpX-6 mission patch

SpaceX CRS-6, also known asSpX-6, was aCommercial Resupply Service mission to theInternational Space Station, contracted toNASA. It was the eighth flight forSpaceX's uncrewedDragoncargo spacecraft and the sixth SpaceX operational mission contracted toNASA under aCommercial Resupply Services contract. It was docked to the International Space Station from 17 April to 21 May 2015.

Launch history

[edit]

In July 2014, the launch was scheduled by NASA for February 2015, with berthing to the station occurring two days later. However, as a result of delays in the launch of the previousSpaceX CRS-5 mission, SpaceX CRS-6 launched on 14 April 2015. In late March, 2015, the launch was scheduled for 13 April 2015,[3] but was later postponed to 14 April 2015 due to weather conditions.[4]

AFederal Communications Commission (FCC) application submitted for temporary communication frequency authority noted the launch planning date as no earlier than 8 April 2015. The application also confirmed communication uplinks for use with the first stage of this mission as it attempted to conduct afirst-ever propulsive landing on theAutonomous spaceport drone ship after staging.[5]

Payload

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Primary payload

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NASA has contracted for the CRS-6 mission from SpaceX and therefore determines the primary payload, date/time of launch, andorbital parameters for the Dragonspace capsule. The Dragon spacecraft was filled with 2,015 kg (4,442 lb) of supplies and payloads, including critical materials to directly support about 40 of the more than 250 science and research investigations that will occur duringExpedition 43 andExpedition 44.[2]

Among other items on board:

Secondary payload

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SpaceX has the primary control over manifesting, scheduling and loadingsecondary payloads. However, there are certain restrictions included in their contract with NASA that preclude specified hazards on the secondary payloads, and also require contract-specified probabilities of success and safety margins for any SpaceX reboosts of the secondary satellites once the Falcon 9 second stage has achieved its initiallow Earth orbit (LEO).

SpaceX CRS-6 included science payloads for studying new ways to possibly counteract the microgravity-induced cell damage seen during spaceflight, the effects of microgravity on the most common cells in bones, gather new insight that could lead to treatments for osteoporosis and muscle wasting conditions, continue studies into astronaut vision changes and test a new material that could one day be used as a synthetic muscle for robotics explorers of the future. Also making the trip was a new espresso machine for space station crews.[2]

A part of this payload includes science experiments from high schools, such as a project fromAmbassador High School inTorrance, California.[10]

Return payload

[edit]

Dragon returned 1,370 kg (3,020 lb) of cargo toEarth.[2]

Post-launch flight test

[edit]
Main article:SpaceX reusable launch system development program

After theseparation of the second stage, SpaceX conducted aflight test andattempted to return the nearly-emptyfirst stage of the Falcon 9 through the atmosphere and land it on a 90 m × 50 m (300 ft × 160 ft)floating platform called theautonomous spaceport drone ship. The unmanned launch vehicle technically landed on the floating platform, however it came down with too much lateral velocity, tipped over, and was destroyed.[11] Elon Musk later explained that the bipropellant valve was stuck, and therefore the control system could not react rapidly enough for a successful landing.[12]

This was SpaceX's second attempt to land the booster on a floating platform after anearlier test landing attempt in January 2015 had to be abandoned due to weather conditions. The booster was fitted with a variety of technologies to facilitate the flight test, includinggrid fins andlanding legs to facilitate the post-mission test. If successful, this would have been thefirst time in history that a launch vehicle booster was returned to avertical landing.[9][13]

On 15 April 2015, SpaceX released a video of the terminal phase of the descent, the landing, the tip over, and a smalldeflagration as the stage broke up on the deck of the ASDS.[14]

Capsule reflight

[edit]

TheDragon capsule used for this mission was successfully flown a second time in December 2017 withSpaceX CRS-13. The capsule made its third and final flight as part of theSpaceX CRS-18 mission on 25 July 2019.

Gallery

[edit]
SpaceX CRS-6
  • CRS-6 being prepared for launch
    CRS-6 being prepared for launch
  • Launch of CRS-6
    Launch of CRS-6
  • Falcon 9 before impacting the droneship
    Falcon 9 before impacting the droneship
  • CRS-6 docked to the ISS
    CRS-6 docked to the ISS
  • Dragon descending under parachutes
    Dragon descending under parachutes

See also

[edit]

References

[edit]
  1. ^"DRAGON CRS-6". N2YO.com. Retrieved31 May 2021.
  2. ^abcd"SpaceX CRS-6 Sixth Commercial Resupply Services Flight to the International Space Station"(PDF). NASA. April 2015. Retrieved31 May 2021.Public Domain This article incorporates text from this source, which is in thepublic domain.
  3. ^"Launch Schedule". Retrieved4 April 2015.
  4. ^Lawler, Richard (13 April 2015)."SpaceX's next try at landing a reusable rocket is minutes away". Engadget. Retrieved13 April 2015.
  5. ^"OET Special Temporary Authority Report". Retrieved4 April 2015.Public Domain This article incorporates text from this source, which is in thepublic domain.
  6. ^"ARKYD: A Space Telescope for Everyone". KickStarter. 26 May 2016. Retrieved31 May 2021.
  7. ^Wilhelm, Steve (16 October 2014)."First step toward asteroid mining: Planetary Resources set to launch test satellite". Puget Sound Business Journal. Retrieved19 October 2014.
  8. ^"Antares 130 debut with fourth Cygnus ready for second attempt". NASASpaceFlight.com. 27 October 2014. Retrieved31 May 2021.
  9. ^abGraham, William (13 April 2015)."SpaceX Falcon 9 scrubs CRS-6 Dragon launch due to weather". NASASpaceFlight.com. Retrieved14 April 2015.
  10. ^"Nanoracks-Ambassador High School-Pollen Propulsion in a Microgravity Environment (Nanoracks-AHS-Pollen Propulsion)". NASA. 3 April 2015. Retrieved6 April 2015.Public Domain This article incorporates text from this source, which is in thepublic domain.
  11. ^"CRS-6 First Stage Landing". YouTube. 15 April 2015. Retrieved16 April 2015.
  12. ^"Elon Musk on Twitter". Twitter. Archived fromthe original on 15 April 2015. Retrieved14 April 2015.
  13. ^Bergin, Chris (3 April 2015)."SpaceX preparing for a busy season of missions and test milestones". NASASpaceFlight.com. Retrieved4 April 2015.
  14. ^CRS-6 First Stage Landing SpaceX, 15 April 2015

External links

[edit]
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