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H-II Transfer Vehicle KOUNOTORI (HTV)

HTV6ミッションロゴ

HTV6 mission logo

HTV6 Mission

Developed and built in Japan, the H-II Transfer Vehicle (HTV) known as "KOUNOTORI (white stork)" is an unmanned cargo transfer spacecraft that delivers supplies to the International Space Station (ISS).

With the world’s largest loading capacity of approximately six tons and such unique functions as the International Standard Racks, “KOUNOTORI” plays a key role in ISS operations.

HTV6 payload
HTV6 mission timeline

News

KOUNOTORI6 Mission Completed

KOUNOTORI6 Mission Completed (February 7, 2017)

KOUNOTORI6 (HTV6) descended to an altitude of 120km over the east coast of New Zealand and reentered the Earth's atmosphere at around 0:06 a.m. on February 6. KOUNOTORI6 successfully completed its cargo supply mission to the ISS.

Reentry of KOUNOTORI6 was confirmed

Reentry of KOUNOTORI6 was confirmed (February 6, 2017)

Reentry of the H-II Transfer Vehicle KOUNOTORI6 (HTV6) into Earth's atmosphere was confirmed.

KOUNOTORI6 performed its third de-orbit maneuver for reentry

KOUNOTORI6 performed its third de-orbit maneuver for reentry (February 5, 2017)

At 11:42 p.m. on February 5, KOUNOTORI6 (HTV6) performed the third de-orbit maneuver for the reentry into the Earth's atmosphere. The HTV6's reentry is scheduled for 0:06 a.m., on February 6.

» HTV6 Mission News

Flight Schedule


HTV6 Mission Schedule (as of February 6, 2017)
All times are Japan Standard Time (UTC + 9 hours)
Item Description
HTV Flight Name HTV6 (KOUNOTORI6)
Launch date and time 10:26:47 p.m., December 9 (Friday), 2016
Launch window December 10 - 31, 2016, 2016
Launch site Yoshinobu Launch Complex, Tanegashima Space Center (TNSC)
HTV6 capture 7:39 p.m., December 13, 2016
Berthing completion to the ISS (Activation of the HTV DDCU) 3:24 a.m., December 14, 2016
Departure from the ISS 0:45 a.m., January 28, 2017
Reentry
Around 0:06 a.m., February 6, 2017
Altitude Insertion Orbit: 200 km x 300 km (elliptical orbit)
Rendezvous: Approx. 400km
Inclination 51.7 degrees

News

*All times are Japan Standard Time (JST)

KOUNOTORI6 was unberthed from the nadir port of Harmony (Node 2) by the SSRMS

KOUNOTORI6 was unberthed from the nadir port of Harmony (Node 2) by the SSRMS (January 27, 2017)

Following the hatch closure at 8:22 p.m., on January 26, KOUNOTORI6 was unberthed from the nadir port of Harmony (Node 2) by the SSRMS at 7:59 p.m., January 27.

The Exposed Pallet (EP) of KOUNOTORI6 was reinstalled into KOUNOTORI6's Unpressurized Logistics Carrier (ULC)

The Exposed Pallet (EP) of KOUNOTORI6 was reinstalled into KOUNOTORI6's Unpressurized Logistics Carrier (ULC) (January 23, 2017)

The Exposed Pallet (EP) of KOUNOTORI6 was reinstalled into KOUNOTORI6's Unpressurized Logistics Carrier (ULC) at 11:20 a.m., January 23.

Transfer of the Exposed Pallet (EP) begins

Transfer of the Exposed Pallet (EP) begins (December 14, 2016)

The Exposed Pallet (EP) with the new ISS battery Orbital Replacement Units (ORUs) onboard was pulled out from the Unpressurized Logistics Carrier (ULC) of KOUNOTORI6

KOUNOTORI6 Hatch Opening and Crew Ingress

KOUNOTORI6 Hatch Opening and Crew Ingress (December 14, 2016)

The ISS Expedition 50 crew opened the hatch of KOUNOTORI6 and entered the Pressurized Logistics Carrier (PLC) at 4:44 a.m., December 14.

ISS Crew concludes KOUNOTORI6 berthing operations

ISS Crew concludes KOUNOTORI6 berthing operations (December 14, 2016)

All cables between KOUNOTORI6 and Harmony were connected. The berthing operations of KOUNOTORI6 were completed at 3:24 a.m., December 14.

KOUNOTORI6 fastened to Harmony with CBM bolts

KOUNOTORI6 fastened to Harmony with CBM bolts (December 14, 2016)

The Common Berthing Mechanism (CBM) between KOUNOTORI6 and Harmony was fastened with bolts at 11:48 p.m., December 13.

 
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