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Home > Hayabusa's 7-Year Journey > The Hayabusa team challenge > Designing Hayabusa from scratch
Hayabusa's 7-Year Journey
The Hayabusa team challenge -As told by team engineers-

Tale 2 " Hayabusa returns after overcoming many obstacles " Shinji Hagino, NEC Project Manager

Researched and written by Shinya Matsuura

Designing Hayabusa from scratch

Q: Please describe your work.

Hagino: I have been in charge of satellite system design since I joined NEC.

Q: What kind of work does system design involve?

Hagino: It involves coordinating and integrating many different elements to make them work together in one satellite. After working as a system manager, I worked for the first time as a project manager for Hayabusa.

Q: What was it like developing Hayabusa?

Hagino: It wasn't easy, I can tell you that! Normally, when developing a new satellite, we inherit the designs used in earlier models for the basic parts such as the power system and attitude control, which are referred to as the bus systems in technical parlance. Since designs that have been used until now in space should be stable, the reliability of satellite systems can be ensured by adding new sensing devices on top of them.
However, in the case of Hayabusa, everything was new. We had to design everything from scratch. Besides the sensing devices, we had to design just about everything anew, including the power system, attitude control system, and communications system to fully satisfy the requirements. On top of that, various other unique devices such as the sampler horn and the re-entry capsule were also to be squeezed in, with the requirement that the total weight be 510 kg or less so as to allow launching with the M-V rocket (links to JAXA website). Every day was a series of discussions.

Devices employing leading-edge technologies loaded on Hayabusa<1>Devices employing leading-edge technologies loaded on Hayabusa<2>
Devices employing leading-edge technologies loaded on Hayabusa

Q: What did you feel at the time of the launch?

Hagino: At that time, I attended the first visible pass at the Uchinoura Space Center. The first visible pass means the operations done by receiving the first radio waves from the probe following its launch. When we received the radio waves from the probe, I recalled all our struggles and was full of emotion. But, having become a project manager on the Hayabusa project, I thought to myself that it is still too early to be filled with emotion for all the upcoming projects. Some members of our team were moved to tears, but I thought it better not to cry myself.

Q: Did your feelings change after becoming a project manager?

Hagino: Previously, I was working on many different things and so was apprehensive about mistakes. But, after becoming a project manager, I worked by trusting my team, so my thought was that “once it goes up, it should work.” Trusting my team in this way made me feel more reassured than when I did the work myself.

Shinji Hagino, Manager of Space and Satellite Systems Department, Space Systems Division, NEC CorporationShinji Hagino,
Manager of Space and Satellite Systems Department,
Space Systems Division,
NEC Corporation
Joined the company in 1985. Worked 21 years on system design of scientific satellites and is currently in charge of project management of Hayabusa and other scientific satellites.

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