Cygnus OA-6

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OA-6
ISS-47 Cygnus OA-6 approaching the ISS (1).jpg
Canadarm2 approaches the S.S. Rick Husband.
NamesCRS OA-6
CRS Orb-6 (2008–2015)
Orbital-6 (2008–2015)
Mission type ISS resupply
Operator Orbital ATK
COSPAR ID 2016-019A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 41393 OOjs UI icon edit-ltr-progressive.svg
Mission duration91 days, 10 hours, 23 minutes
Spacecraft properties
SpacecraftS.S. Rick Husband
Spacecraft type Enhanced Cygnus [1] [2]
Manufacturer
Launch mass7,492 kg (16,517 lb) [3]
Payload mass3,513 kg (7,745 lb)
Start of mission
Launch date23 March 2016, 03:05:52 (23 March 2016, 03:05:52)  UTC (22 March 2016, 11:05:52 pm  EDT) [4]
Rocket Atlas V 401 (AV-064)
Launch site Cape Canaveral, SLC‑41
Contractor United Launch Alliance
End of mission
DisposalDeorbited
Decay date22 June 2016, 13:29 UTC [5]
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Inclination 51.66°
Berthing at ISS
Berthing port Unity nadir
RMS capture26 March 2016, 10:51 UTC [6]
Berthing date26 March 2016, 14:52 UTC
Unberthing date14 June 2016, 11:43 UTC
RMS release14 June 2016, 13:30 UTC
Time berthed79 days, 20 hours, 51 minutes
Orbital Sciences CRS Flight 6 Patch.png
NASA insignia
←  OA-4
SpaceX CRS-8  →
←  OA-4
OA-5  →

OA-6, previously known as Orbital-6, is the sixth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its fifth flight to the International Space Station under the Commercial Resupply Services (CRS) contract with NASA. [4] [7] The mission launched on 23 March 2016 at 03:05:52 UTC.

Contents

The Cygnus spacecraft for this mission is named the S.S. Rick Husband in honor of astronaut Rick Husband. [8]

History

The first COTS demonstration mission with a Cygnus concluded successfully in September 2013 and Orbital commenced operational ISS cargo missions under the Commercial Resupply Service (CRS) program with two missions in 2014. However, the third operational mission, Cygnus Orb-3, was unsuccessful due to catastrophic failure of its Antares 130 launch vehicle. Orbital discontinued the Antares 100 series in favor of the planned Antares 200, upgraded with newly built RD-181 first stage engines to provide greater payload performance and increased reliability. [9]

While the Antares 200 was under development in 2015–2016, the company contracted with United Launch Alliance (ULA) for the Atlas V launch of Cygnus OA-4, which occurred on 6 December 2015, to be followed by the Atlas V launch of Cygnus OA-6 on 23 March 2016. [10]

Future Orbital ATK launches of CRS OA-5 in August 2016 and CRS OA-7 in November 2016 would be on the new Antares 230. Together with CRS OA-6, these missions enabled Orbital ATK to cover their initial CRS contracted payload obligation. [11]

Production and integration of Cygnus spacecraft was performed in Dulles, Virginia. The Cygnus service module was mated with the pressurized cargo module at the launch site, and mission operations were conducted from control centers in Dulles, Virginia and Houston, Texas. [12]

Launch

On 23 March 2016 (UTC), Cygnus CRS OA-6 was successfully launched by the Atlas V into low Earth orbit. During the flight, the rocket had a first-stage anomaly that led to shutdown of the first-stage engine approximately five seconds before anticipated. The anomaly forced the Centaur upper stage of the rocket to fire for approximately one minute longer than planned, using reserved fuel margin, but did not significantly impact payload orbital insertion. The preplanned deorbit burn successfully deorbited the stage, but not precisely within the designated location. The issue marked the first Atlas V anomaly in over eight years to be publicly acknowledged by ULA. [13] [14]

Spacecraft

Cygnus OA-6 is the fifth of ten flights by Orbital ATK under the Commercial Resupply Services contract with NASA. This was the second flight of the Enhanced sized Cygnus PCM. [11] The delay of the NOAA GOES-R satellite from March 2016 to October 2016 created this Atlas V launch opportunity for Cygnus OA-6 to be launched before Cygnus OA-5. The mission was launched on 23 March 2016. [4] [15]

In keeping with an Orbital ATK tradition, this Cygnus spacecraft is named the S.S. Rick Husband after the NASA astronaut who commanded the Space Shuttle Columbia's ill-fated STS-107 mission in 2003. [16]

Manifest

Total weight of cargo: 3,513 kg (7,745 lb) using Enhanced Cygnus. [2] [17]

Saffire-1

Saffire-1 is a NASA test to study flammability and fire propagation in space, using the CRS OA-6 after it has delivered cargo to the International Space Station. The spacecraft is fitted with various sensors and cameras to record data during what is expected to be a 20-minute fire, to determine how much fire resistance is needed in the ultra-light material used in the spacecraft and astronaut's gear. Cygnus OA-6 will later disintegrate as it enters the Earth's atmosphere. [20]

Other ORB projects

After this Cygnus OA-6 flight, NASA plans to launch two more Cygnus cargo missions in 2016: Cygnus OA-5 on 6 July 2016 and Cygnus OA-7 on 30 December 2016. They will be followed by three flights from the extended contract: Cygnus OA-8E on 12 June 2017, Cygnus OA-9E later in 2017 and Cygnus NG-10 in 2018. The schedules in early 2017 are dynamic, due to the first crewed commercial flights (SpaceX, Boeing) to ISS. [7] [21]

See also

Related Research Articles

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References

  1. ↑ Bergin, Chris (22 February 2012). "Space industry giants Orbital upbeat ahead of Antares debut". NASASpaceFlight.com. Retrieved 29 March 2012.
  2. 1 2 "Orbital ATK Team on Track for Fall 2015 Cygnus Mission and Antares Return to Flight in 2016". Orbital ATK. 12 August 2015. Retrieved 12 August 2015.
  3. ↑ "Cygnus OA-6 Mission: Fact Sheet" (PDF). Orbital ATK. 2018. Archived from the original (PDF) on 25 May 2018. Retrieved 24 May 2018.
  4. 1 2 3 Clark, Stephen. "Launch Schedule". Spaceflight Now. Retrieved 5 March 2016.
  5. ↑ "Mission Page: OA-6 Space Station Cargo Resupply". Orbital ATK. 22 June 2016. Archived from the original on 25 May 2018. Retrieved 24 May 2018.
  6. ↑ Ray, Justin (26 March 2016). "Traveling Cygnus pulls into port at International Space Station". Spaceflight Now. Retrieved 27 March 2016.
  7. 1 2 Frommert, Hartmut (17 December 2015). "International Space Station Flight Schedule". Students for the Exploration and Development of Space. Retrieved 5 March 2016.
  8. ↑ "OA-6 Mission Page". www.orbitalatk.com. Archived from the original on 15 April 2016. Retrieved 5 April 2016.
  9. ↑ Gebhardt, Chris (14 August 2015). "Orbital ATK make progress toward Return To Flight of Antares rocket". NASASpaceFlight.com. Retrieved 14 August 2015.
  10. ↑ "Orbital ATK Looks Ahead as Cygnus Arrives at ISS". spaceNews.com. 10 December 2015. Retrieved 10 December 2015.
  11. 1 2 Leone, Dan (17 August 2015). "NASA Orders Two More ISS Cargo Missions From Orbital ATK". SpaceNews. Retrieved 17 August 2015.
  12. ↑ "Cygnus Fact Sheet" (PDF). Orbital ATK. 24 March 2015. Archived from the original (PDF) on 26 September 2015. Retrieved 14 August 2015.
  13. ↑ Ray, Justin (24 March 2016). "Atlas 5 rocket forced to improvise during Tuesday's climb to orbit". SpaceFlight Now. Retrieved 24 March 2016.
  14. ↑ Foust, Jeff (24 March 2016). "ULA confirms engine issue on latest Atlas launch". SpaceNews. Retrieved 25 March 2016.
  15. ↑ "International Space Station Status" (PDF). NASA. July 2015. Retrieved 15 August 2015.PD-icon.svg This article incorporates text from this source, which is in the public domain.
  16. ↑ Sanders, Shaley (9 March 2016). "Orbital ATK names space station freighter in honor of TTU grad". KCBD. Retrieved 25 March 2016.
  17. ↑ "Mission Page: OA-6 Space Station Cargo Resupply". Orbital ATK. 26 March 2016. Retrieved 27 March 2016.
  18. ↑ Krebs, Gunter Dirk (29 March 2016). "The Flock Earth observing constellation". Gunter's Space Page. Retrieved 29 March 2016.
  19. ↑ Graham, William (22 March 2016). "OA-6 Cygnus launched to the ISS via Atlas V". NasaSpaceflight. Retrieved 27 March 2016.
  20. ↑ NASA to light large blaze in space as part of new fire safety experiment, AFP via ABC News Online, 16 March 2016
  21. ↑ "Cygnus-PCM (enhanced)". Gunter's Space Page. 18 August 2015. Retrieved 18 August 2015.
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