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Space Systems

Satellite ProgramsInternational Space Station


The next generation cargo transfer vehicle (HTV-X)

HTV-X is one of the unmanned orbital transport vehicles that will be used to carry essential cargo such as large-sized devices and life support goods for astronauts to the International Space Station (ISS). After transporting cargoes and leaving the ISS, the HTV-X can be used as a platform for technical demonstration.

We are in charge of system design and the development and manufacture of the Service Module, the heart of the vehicle. The Service Module is the module which integrates all the functions required for the HTV-X to navigate in outer space. Therefore the design concept of the integrating Service Module enables new applications such as independent flight of the Service Module and its docking with other modules in outer space.

  • Client

    JAXA

  • Launch date

    HTV-X1 : FY2024
    HTV-X2 : FY2024
    HTV-X3 : FY2025

  • Launch Vehicle

    H3

  • Launch site

    Tanegashima Space Center

  • Orbit

    Altitude: 300 - 500 km

  • Mass

    Total weight: about 16 t
    Payload: about 6 t

  • Electrical power

    --

  • Mission Duration

    The ISS berthing period: Up to 6 months
    Flight period after leaving the ISS: Up to 18 months
    (Technology Demonstration Mission Phase)

  • Responsibilities

    Prime contractor


The H-II Transfer Vehicle (HTV)

HTV is one of the unmanned orbital transport vehicles that will be used to carry supplies to the International Space Station (ISS). It is designed to transport various cargoes, instruments, and equipment to ISS, and collect wastes including used experimental set-ups and clothing from ISS for disposal.

The H-II Transfer Vehicle (HTV) will be used to convey construction materials and supplies to the International Space Station (ISS). This vehicle will incorporate rendezvous and docking technologies verified on the ETS-VII (1998). We are in charge of system design (jointly with Mitsubishi Heavy Industries) and the development and manufacture of the electronics module, the heart of the vehicle. 7 HTVs are launched every year from 2009.

  • Client

    JAXA

  • Launch date

    HTV-1 : September 11, 2009
    HTV-2 : January 22, 2011
    HTV-3 : July 21, 2012
    HTV-4 : August 4, 2013
    HTV-5:August 19, 2015
    HTV-6:December 9, 2016
    HTV-7:September 23, 2018
    HTV-8:September 25, 2019
    HTV-9:May 21, 2020

  • Launch Vehicle

    H-IIB

  • Launch site

    Tanegashima Space Center

  • Orbit

    Altitude: 350 - 460 km

  • Mass

    Total weight: about 16.5t
    Payload: about 4t

  • Electrical power

    --

  • Design life

    Approx. 20 days

  • Responsibilities

    Sub contractor


JEM (Kibo)

Japanese Experiment Module: JEM is Japan's first manned facility, and consists of four components. It is designed for four astronauts to perform experimental activities for an extended period of time.

Built through international cooperation, the Japanese Experiment Module (JEM) is Japan’s contribution to the International Space Station. We are responsible for the electrical power subsystem and electrostatic levitation furnace.

  • Client

    JAXA

  • Launch date

    2008 - 2009

  • Launch Vehicle

    STS

  • Launch site

    Kennedy Space Center

  • Orbit

    Altitude: 330-480 km, Circular orbit

  • Mass

    25 t

  • Electrical power

    25 kw

  • Design life

    --

  • Responsibilities

    Sub contractor

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