 A view of the dockedKounotori 5 spacecraft from theCupola, withAurora Australis in the background. | |
| Mission type | ISS resupply |
|---|---|
| Operator | JAXA |
| COSPAR ID | 2015-038A |
| SATCATno. | 40873 |
| Mission duration | 41 days |
| Spacecraft properties | |
| Spacecraft type | H-II Transfer Vehicle (HTV) |
| Manufacturer | Mitsubishi Heavy Industries |
| Launch mass | 16557 kg[citation needed] |
| Dry mass | 10500 kg |
| Start of mission | |
| Launch date | 19 August 2015, 11:50:49 UTC |
| Rocket | H-IIB No. 5 |
| Launch site | Tanegashima,Yoshinobu-2 |
| Contractor | Mitsubishi Heavy Industries |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 29 September 2015, 20:33 UTC |
| Orbital parameters | |
| Reference system | Geocentric orbit[1] |
| Regime | Low Earth orbit |
| Inclination | 51.66° |
| Berthing atISS | |
| Berthing port | Harmony |
| RMS capture | 24 August 2015, 10:28 UTC |
| Berthing date | 24 August 2015, 17:28 UTC |
| Unberthing date | 28 September 2015, 11:12 UTC |
| RMS release | 28 September 2015, 16:53 UTC |
| Time berthed | 34 days, 23 hours, 25 minutes |
| Cargo | |
| Mass | 6057 kg |
| Pressurised | 4557 kg[citation needed] |
| Unpressurised | 1500 kg[citation needed] |
Kounotori 5, also known asHTV-5, was the fifth flight of theH-II Transfer Vehicle, an uncrewed cargo spacecraft launched to resupply theInternational Space Station. It was launched on 19 August 2015.
Major changes of Kounotori 5 from previous Kounotori are:[2]
When approaching the ISS, previous missions were held at the Approach Initiation (AI) point at 5 kilometres (3.1 mi) behind the ISS for system checkout, but Kounotori 5 was changed to continue the approach without holding, to simplify the operation.[2]
Kounotori 5 was originally planned to carry about 5.5 tonnes (5.4 long tons; 6.1 short tons) of cargo, consisting of 4,500 kilograms (9,900 lb) in the pressurised compartment and 1000 kg in the unpressurised compartment.[2] Due primarily to the launch failure ofSpaceX CRS-7, an additional 200 kilograms (440 lb) were added as the late access cargo. Total cargo weight was 6,057 kilograms (13,353 lb).[6]
Pressurised cargo includes:[2][7] potable water (600 litres (130 imp gal; 160 US gal)), food, crew commodities, system components, and science experiment equipments. System components includes: UPA Fluids Control and Pump Assembly (FCPA), WPA Multifiltration Beds (WFB), a galley rack to be placed inUnity, and aSimplified Aid For EVA Rescue (SAFER) pack. Science experiment equipments include Mouse Habitat Unit (MHU), Electrostatic Levitation Furnace (ELF), Multi-purpose Small Payload Rack (MSPR-2), Exposed Experiment Handrail Attachment Mechanism (ExHAM-2), NanoRacks External Platform (NREP), andCubeSats (SERPENS [pt],S-CUBE, fourteenFlock-2b,[8]AAUSAT5, andGOMX-3).
Unpressurised cargo consists of theCalorimetric Electron Telescope (CALET).[2] Plans for a NASA unpressurised module were canceled.[9]
Upon departure from ISS, the unpressurised cargo bay will carry the Multi-mission Consolidated Equipment (MCE) package, the Superconducting Submillimeter-wave Limb-Emission Sounder (SMILES), and a NASA experiment module,Space Test Program Houston 4 (STP-H4), until its destructive reentry in theAtmosphere of Earth.[2]
Kounotori 5 was originally planned for launch in 2014 but was later postponed due to delays in the construction andqualification testing[citation needed] of the payload to fly on the capsule.[10]
In June 2015, it was scheduled to be launched at around 13:01 UTC on 16 August 2015.[11] Due to the bad weather forecast, on 14 August 2015 the launch was postponed to 17 August 2015,[12] and then on 16 August it was postponed again to 19 August 2015.[13]
Kounotori 5 was successfully launched with aH-IIB No. 5 (H-IIB F5)Launch vehicle flying from pad 2 of theYoshinobu Launch Complex atTanegashima Space Center at 11:50:49 UTC on 19 August 2015.[14] Communication and three-axisattitude controls were established shortly after the launch.[15] Phase Manoeuvre was performed by 19:25 UTC on 20 August 2015,[16] and the first Height Adjustment Manoeuvre by 17:55 UTC on 22 August 2015.[17] The second and third Height Adjustment Manoeuvre were performed by 03:07 and 06:12 UTC on 24 August 2015, respectively.[18][19]
The ISS's robotic armSSRMS grappled Kounotori 5 at 10:29 UTC on 24 August 2015, and fastened it to the ISS'sCommon Berthing Mechanism (CBM) at 14:58 UTC on 24 August 2015. All berthing operations were completed at 17:28 UTC on 24 August 2015.[20]
From 02:27 UTC on 25 August 2015, the Exposed Pallet (EP), which is carrying CALET, was extracted from Kounotori 5's Unpressurised Logistics Carrier (ULC) by the ground-controlledSSRMS, and handed off to theJapanese Experiment Module Remote Manipulator System (JEMRMS), which is also remote-controlled from ground. The JEMRMS then attached the palette to the JEM Exposed Facility (EF).[21][22] Later, at 14:29 UTC on the same day, CALET was removed from the pallet and installed to the Exposed Facility by the JEMRMS.[23]
The ISS crew opened the hatch of the Kounotori's Common Berthing Mechanism and entered to Pressurized Logistics Carrier at 10:24 UTC on 25 August 2015,[21] and began transferring the cargo.
Kounotori 5 was unberthed from the CBM at 11:12 UTC, 28 September 2015 by SSRMS robotic arm and moved to the release position. The first attempt of the release at 15:20 UTC was aborted due to an anomaly of theSSRMS.[24] After one ISS orbit, Kounotori 5 was released from the SSRMS at 16:53 UTC, 28 September 2015,Expedition 45 Flight EngineerKimiya Yui ofJAXA, backed up by NASA Flight EngineerKjell N. Lindgren, commanded theSSRMS.
After the orbit control manoeuvre, Kounotori 5 reentered Earth's atmosphere over the southernPacific Ocean around 20:33 UTC, on 29 September 2015.[25]
This article incorporates text from this source, which is in thepublic domain. This article incorporates text from this source, which is in thepublic domain.
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