Launch Result of H-IIB Launch Vehicle No. 2 with KOUNOTORI2 (HTV2) Onboard

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JAXA - HTV-2 Mission patch.

January 22, 2011 (JST)

The Japan Aerospace Exploration Agency (JAXA) launched the H-IIB Launch Vehicle No.2 (H-IIB F2) with the KOUNOTORI2 (HTV2, a cargo transfer vehicle to the International Space Station) onboard at 2:37:57 p.m. on January 22 (Sat.,) 2011 (Japan Standard Time, JST) from the Tanegashima Space Center.

The launch vehicle flew smoothly, and, at about 15 minutes and 13 seconds after liftoff, the separation of the KOUNOTORI2 was confirmed.

Separation of the KOUNOTORI2 (Artist's view)

We would like to express our profound appreciation for the cooperation and support of all related personnel and organizations that helped contribute to the successful launch of the H-IIB F2.

At the time of the launch, the weather was clear, a wind speed was 8.3 meters/second from the north-west and the temperature was 10.6 degrees Celsius.

H-IIB Launch Vehicle No. 2 (H-IIB F2) Launch Sequence (Quick Review)



(*1) The values are based on quick report results without detailed data evaluation.
(*2) The values are updated ones based on actual measurement data such as thrust characteristics which are unique for the H-IIB F2 engines. Therefore, they are slightly different from the values in the Launch Plan
(*3) The definition of SRBA burnout is when the combustion chamber presser becomes 2% against the largest combustion pressure.
(*4) The definition of SRBA jettison is to cut the thrust struts.

Mission website:

KOUNOTORI2/H-IIB Launch Veicle No.2 Special Site: http://www.jaxa.jp/countdown/h2bf2/index_e.html

Images, Video, Text, Credits: Japan Aerospace Exploration Agency / Mitsubishi Heavy Industries, Ltd / NASA.

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