Reentry data acquisition using I Ball Reentry Recorder (I BALL) - 09.17.14

Overview | Description | Applications | Operations | Results | Publications | Imagery
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Science Objectives for Everyone
The I BALL investigation consists of a spherical sensor assembly that acquires continuous position, acceleration, temperature, and imagery data during the HTV reentry phase. I BALL is launched onboard the HTV3 vehicle and is installed, prior to hatch closure, onto a surface panel of an HTV Resupply Rack (HRR). During and after HTV3 atmospheric reentry, I BALL automatically collects data and sends it to the ground for processing in order to more thoroughly understand the processes and characteristics regarding spacecraft reentry.

Science Results for Everyone
Information Pending

The following content was provided by Hiroshi Sasaki, Naoki Sato, and is maintained in a database by the ISS Program Science Office.
Information provided courtesy of the Japan Aerospace and Exploration Agency (JAXA).

Experiment Details


Principal Investigator(s)

  • Hiroshi Sasaki, Japan Aerospace Exploration Agency, Japan
  • Naoki Sato, JAXA Tsukuba-city, Japan

  • Co-Investigator(s)/Collaborator(s)
  • Issei Kawashima, JAXA, Japan
  • Kota Tanabe, JAXA, Japan
  • Hideaki Uchikawa, JAXA, Japan
  • Toru Yoshihara, JAXA, Japan
  • Hiroshi Yamamoto, JAXA, Japan
  • Takashi Makino, IHI, Japan
  • Fumitaka Sugimura, IHI, Japan
  • Hirotake Morisaki, IHI, Japan
  • Asako Moriya, IHI, Japan
  • Yoshihiro Kishino, IHI, Japan
  • Masaharu Takada, IHI, Japan
  • Keiichi Wada, Tsukuba-city, Japan
  • Maki Maeda, Tsukuba-city, Ibaraki, Japan
  • Yusuke Suzuki, Japan Aerospace Exploration Agency, Japan
  • Toru Kasai, JAXA, Japan

  • Developer(s)
    Information Pending
    Sponsoring Space Agency
    Japan Aerospace Exploration Agency (JAXA)

    Sponsoring Organization
    Information Pending

    Research Benefits
    Information Pending

    ISS Expedition Duration
    May 2012 - September 2013

    Expeditions Assigned

    Previous ISS Missions
    Information Pending

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    Experiment Description

    Research Overview

    • The I BALL investigation is being developed to get the actual engineering data during reentry operations, which helps engineers to more accurately control the future reentry capability of the HTV.

    • I BALL is a data acquisition device that obtains position, acceleration, temperature, imagery data during the HTV reentry phase. This data will be used to conduct analysis of the environment and various HTV characteristics encountered during reentry and allow engineers to more accurately estimate a range of HTV break-up altitudes.

    • Continuous reentry data acquisition contributes to an improvement of the reentry analysis, generating more accurate predictions and allowing controllers to specify a smaller splash-down area.

    • Smaller splash down areas will contribute advanced Japanese recovery vehicle studies, reduce design constraints, and allow for quick and swift recovery of future spacecraft.

    Information Pending

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    Space Applications
    I BALL will contribute to ongoing advanced Japanese recovery vehicle studies, reduce design constraints, and allow for quick and swift recovery of future spacecraft.

    Earth Applications
    By determining the breakup phenomenon of the vehicle, we can specify a smaller splash-down area and can be minimized the notification area on the ground during the reentry.

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    Operational Requirements
    Information Pending

    Operational Protocols
    Information Pending

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    Results/More Information

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    Related Websites

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    image I BALL overview (Inside its packing material)
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    image Image of I BALL after installation on HRR
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