H-IIB launch vehicle (H-IIB) was developed in order to launch H-II Transfer Vehicle (HTV) to the InternationalSpace Station (ISS), and to satisfy various customers' needs for heavy lift launch. Until now, two H-IIB launchvehicles have been launched successfully.At the Flight #2, Japan Aerospace Exploration Agency (JAXA) has conducted a controlled re-entry experiment ofupper stage after delivering HTV to ISS transfer orbit as a new safety procedure to minimize ground casualty risk.The controlled re-entry is effective also to reduce space debris and it is progressive approach to promote spaceenvironment preservation.This paper describes the outline of the controlled re-entry system, and the result of the re-entry experiment at H-IIBFlight #2.
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