Japan’s first superior cargo ship, HTV-X1, arrives on the Worldwide Area Station


October 29, 2025

— For the primary time in 5 years, a Japanese spacecraft has arrived on the Worldwide Area Station.

JAXA (the Japan Aerospace Exploration Company) on Wednesday (Oct. 29) oversaw the HTV-X1, its first upgraded cargo ship, because it was captured and berthed to the orbiting complicated. Japanese astronaut Kimiya Yui and NASA astronaut Zena Cardman, members of the Expedition 73 crew, used the station’s Canadarm2 robotic arm to grapple the solar-powered spacecraft at 11:58 a.m. EDT (1558 GMT or 12:58 a.m. Japan Normal Time on Oct. 30).

“HTV seize full,” mentioned Yui. “It is a historic occasion within the Japanese area program. The spacecraft is so stunning and glossy, representing our shiny future.”

NASA flight controllers on the Mission Management Heart in Houston are set to manage the arm and berth the HTV-X1 on the nadir port of the station’s Concord Node 2.

The HTV-X1 was launched atop an H3 rocket from the Tanegashima Area Heart in Japan at 9:00 a.m. JST on Sunday (Oct. 26) [8:00 p.m. EDT on Oct. 25 or 0000 GMT on Oct. 26]. Throughout its strategy to the area station, the automobile accomplished checks to display its efficiency and functionality to maneuver.

‘X’ for superior

Designed with a watch in the direction of future missions past the ISS, the HTV-X differs from its previous 9 HTV (H-II Switch Automobile) craft in each look and functionality. Though it’s about 4 ft (1.2 meters) shorter than its predecessor, the HTV-X can carry roughly the identical mass (about 13,200 kilos or 6,000 kilograms) into low Earth orbit.

The superior automobile gives elevated energy capabilities when not berthed (when hooked up to the station, the HTV-X attracts electrical energy from the complicated). The unique HTV had photo voltaic cells mounted to its important physique; the HTV-X has two photo voltaic paddles. That, along with a bigger propellant tank permits HTV-X to assist impartial payloads in Earth orbit for as much as 18 months after a half a yr on the area station.

Upgrades might sometime result in a crewed model and, extra within the close to time period, an autonomous docking functionality.

“So, preliminary model is we have to seize it. That is going to be step-by-step,” mentioned Yui in an interview with collectSPACE previous to his launch. “And the following one, hopefully we’ll have a docking system. It could be on the third one.”

“Finally we’re going to have a docking model of HTV-X. Then we are able to use it for the future exploration [missions] as properly,” he mentioned.

Yui beforehand supported the arrival of HTV-5 when he was a member of the area station’s Expedition 44 crew in August 2015.

Science, provides and sake

Like the sooner HTV, HTV-X carries each pressurized and unpressurized cargo.

HTV-X1 is loaded with provides for the Expedition 73 crew, together with recent meals, oxygen and water. The automobile additionally has on board substitute elements for JAXA’s Kibo module, science and expertise demonstration gear and 6 CubeSats to be deployed from the area station.

On board however contained in the unpressurised cargo module is JAXA’s i-SEEP (IVA-resuppliable Small Uncovered Experiment Platform), an adapter to make it simpler to conduct science investigations with out having to develop assist {hardware}. i-SEEP can present energy, fluids and communications and simply be mounted on Kibo’s exterior “porch.”

There are additionally a number of industrial payloads on HTV-X1, together with an try at sake fermentation by a partnership between Dassai and Mitsubishi Heavy Industries; an academic outreach undertaking starring the stuffed toy mascot for the outside attire model CHUMS; plant seeds to be later cultivated and flowered on Earth for show on the World Horticultural Exhibition in 2027; toys and prints from on-line entertainers (VTubers); and Japan Airways “passports” that will probably be stamped and photographed on the area station earlier than being returned to their house owners.

There are a number of payloads that won’t be unpacked or moved over to the station, however as an alternative will probably be examined for 3 months in Earth orbit after HTV-X1 departs. These payloads embrace a small satellite tv for pc deployer to display releasing CubeSats at altitudes above the orbit of the ISS; a variety finder (Mt.FUJI) to gauge the accuracy of telemetry readings with laser measurements; and a light-weight flat antenna (DELIGHT) and next-generation photo voltaic cell (SDX) that would assist future area energy era programs.

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