Reentry data acquisition using I Ball Reentry Recorder (I BALL) - 03.24.16

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

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

Keiichi Wada, Tsukuba-city, Japan
Maki Maeda, Tsukuba-city, Ibaraki, Japan
Yusuke Suzuki, Japan Aerospace Exploration Agency, Japan
Toru Kasai, JAXA, Japan
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

Information Pending

Sponsoring Space Agency
Japan Aerospace Exploration Agency (JAXA)

Sponsoring Organization
Japan Aerospace Exploration Agency

Research Benefits
Information Pending

ISS Expedition Duration 1
May 2012 - September 2012; March 2013 - 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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Decadal Survey Recommendations

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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