Author Topic: H3-24W F7 : HTV-X1 : Tanegashima : October 26, 2025 (00:00 UTC) (Read 51775 times)

Galactic Penguin SST · « **on:** 08/22/2025 05:47 am »

https://global.jaxa.jp/press/2025/08/20250822-1_e.html

Launch Schedule of New unmanned cargo transfer spacecraft1（HTV-X1） aboard the 7th H3 Launch Vehicle (H3 F7)

August 22, 2025 (JST)

Japan Aerospace Exploration Agency

Japan Aerospace Exploration Agency (JAXA) hereby announces the launch schedule of New unmanned cargo transfer spacecraft1（HTV-X1） aboard the 7th H3 Launch Vehicle (H3 F7: Flight No.7) as follows.

Launch date   : October 21, 2025
Launch Window   : Around 10:58 (JST)（*1）
The time is the 24-hour clock
Reserved Launch Period   : October 22 through November 30, 2025（*2）
Launch site   : Yoshinobu Launch Complex at the JAXA Tanegashima Space Center

(*1) Time will be determined by the updated orbit of the International Space Station (ISS).
(*2) The launch day and time during the launch windows shall be decided by the international coordination for ISS operations.

The launch schedule of the 6th H3 Launch Vehicle (Type 30 Test Vehicle) will be announced once confirmed.

HTV-X Program General Thread

(Launch mission profile is as attached)

ddspaceman · « **Reply #1 on:** 09/12/2025 02:42 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
🚀The fairing of the H3 Rocket No. 7 has been affixed with decals of "H3" and "HTV-X No. 1"!
HTV-X is a supply ship to the ISS. This time, with the meaning of "delivering your luggage," it even comes with a baggage tag🧳✨
What is the message hidden in the numbers readable from the barcode...?👀
#HTVX #DayOfSpace #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1966407632576757948

ddspaceman · « **Reply #2 on:** 09/12/2025 02:44 pm »

JAXA（宇宙航空研究開発機構）
@JAXA_jp
Translated from Japanese by Grok
🎥Activity Report mini🎥
Let me introduce the mission that utilizes HTV-X as a demonstration platform!
This time, it's "SDX," which conducts space demonstration of the next-generation model of space solar cells, which are indispensable for power generation in space.
#JAXA #HTVX

🔽Related information is here
https://jaxa.jp/links/20250911/htv-x1/index.html

https://twitter.com/JAXA_jp/status/1966049218780606543

SMS · « **Reply #3 on:** 09/12/2025 02:58 pm »

https://imag.sitateru.com/imagination/jaxa-htvx/
&
https://imag-sitateru-com.translate.goog/imagination/jaxa-htvx/?_x_tr_sl=ja&_x_tr_tl=en&_x_tr_hl=pl&_x_tr_pto=wapp

ddspaceman · « **Reply #4 on:** 09/24/2025 04:31 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
In June 2025 the HTV-X1 having completed all system tests, separated its Service Module (SM) and Pressurized Module () in preparation for launch. The PM was placed horizontally, and its hatch was opened for the first time in about two years! 🔓 Starting in August, the loading of pressurized cargo has begun.
#JAXA #HTVX #DevelopmentDiary #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1970684209326150000

ddspaceman · « **Reply #5 on:** 09/27/2025 02:49 am »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
In August 2025, the first pressurized cargo shipment scheduled to be loaded onto the HTV-X1 vehicle arrived at the Tanegashima Space Center. The approximately 2 tons of pressurized cargo received this time includes water resupply tanks, among other items. 🚰 Each cargo item will be loaded onto dedicated shelves (HRR) for cargo mounting and then installed into the Pressurized Module (PM).
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1970737326356865115

ddspaceman · « **Reply #6 on:** 09/27/2025 02:50 am »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
In August 2025, NASA-related personnel completed their work at Tanegashima, and the Nitrogen and Oxygen Replenishment System (NORS) tanks, which were handed over to HTV-X, were loaded as pressurized cargo.
NORS is scheduled to be used to maintain the air in the ISS after arriving at the ISS. 💨
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1971440144969498684

ddspaceman · « **Reply #7 on:** 09/27/2025 02:54 am »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
In August 2025, we loaded pressurized cargo onto dedicated racks (HRR) in the pressurized module. A total of eight dedicated racks are installed in two rows, both vertically and horizontally. 📦
We are carrying out the loading operations carefully and steadily to ensure safe transport to the ISS.
#JAXA #HTVX #DevelopmentDiary #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1971500161999503574

ddspaceman · « **Reply #8 on:** 10/06/2025 06:27 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
HTV-X is not just a supply ship. After completing the transportation of supplies to the ISS, it will be utilized as a technology demonstration platform in orbit. The first unit will carry out three missions: H-SSOD, Mt.FUJI, and DELGHT/SDX, over approximately three months. HTV-X can be said to play a dual role, so to speak. ⚔️
#JAXA #HTVX #DevelopmentDiary #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1975127182893826430

ddspaceman · « **Reply #9 on:** 10/07/2025 03:23 am »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
HTV-X1 Unit 1 will carry the ultra-small satellite deployment system H-SSOD as a technology demonstration mission and conduct a mission to deploy Nihon University's "Tenko 2" after departing from the ISS. With H-SSOD, satellites can be deployed from an altitude higher than the ISS, making it possible to operate satellites for a longer period. 🤾
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

Please check out this article for footage of the handover of Nihon University's "Tenko 2" to JAXA 👀!
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://aero.cst.nihon-u.ac.jp/okuyama/2025/09/04/３５%EF%BC%8E「てんこう２」がjaxaに引き渡されました/

https://twitter.com/HTVX_JAXA/status/1975366175640199545

ddspaceman · « **Reply #10 on:** 10/07/2025 04:33 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
The HTV-X1 unit will carry the DELIGHT deployable lightweight planar antenna in-orbit demonstration as a technology demonstration mission. With an eye toward space solar power systems, it is planned to measure the deployment behavior and structural characteristics of the deployable lightweight panel, receive radio waves with the lightweight planar antenna, and measure the I-V characteristics of the solar cells. 🛰
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

Please view the mission overview of DELIGHT and the footage (CG) when it is deployed from here 👀!
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://kenkai.jaxa.jp/research/ssps/ssps-kouzoubutsu.html

https://twitter.com/HTVX_JAXA/status/1975469554487992582

ddspaceman · « **Reply #11 on:** 10/08/2025 01:26 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
On the HTV-X1 unit, the Next-Generation Space Solar Cell On-Orbit Demonstration SDX will be carried as a technology demonstration mission. It will measure the output of the PHOENIX solar cell, which achieves ultra-high efficiency with an original structure, and the perovskite solar cell, a technology originating from Japan, to confirm their normal operation in orbit. 🔋
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
You can view the mission overview of SDX here👀!
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1975849651862729125

ddspaceman · « **Reply #12 on:** 10/08/2025 01:29 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
The HTV-X1 unit will carry a small reflector, Mt. FUJI, for the Satellite Laser Ranging (SLR) mission as a technology demonstration. The attitude of the HTV-X will be estimated from ranging data from approximately 40 SLR stations around the world, and a quantitative attitude motion estimation evaluation using SLR—the world's first—will be conducted by comparing it with the telemetry of the HTV-X1 unit.
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

Please view the mission overview of Mt.FUJI from here👀!
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://track.sfo.jaxa.jp/project/mtfuji.html

https://twitter.com/HTVX_JAXA/status/1975856764701860043

StraumliBlight · « **Reply #13 on:** 10/08/2025 09:45 pm »

Press Kit [Sep 24] (this website can generate an English translated pdf).

HTV-X1 Press Seminar [Oct 7, translated]

Quote

• Enhanced transport capacity: Weight increased from 4 tons to 5.85 tons (approximately 45% increase), volume increased from 49 m³ to 78 m³ (approximately 60% increase), a significant improvement over the previous model, "Kounotori."
• After arriving at the ISS, it will be grasped by a robotic arm and docked with the Harmony module.
• This mission will also feature new technologies such as "H-SSOD," "Mt.FUJI," "DELIGHT," and "SDX" as technology demonstrations.
• Development of an advanced version is also underway with a view to supplying the Gateway, a manned lunar outpost, in the future.
• The project also includes the technical demonstration of life support systems, such as the CO₂ Removal System On-Orbit Demonstration (DRCS), and aims to establish JAXA's proprietary technologies.

Steven Pietrobon · « **Reply #14 on:** 10/09/2025 06:11 am »

Here is the press kit and its translation.

catdlr · « **Reply #15 on:** 10/11/2025 12:29 pm »

Video post:

Quote

JAXA種子島宇宙センター
@tnsc_JAXA
Auto-translated from Japanese by Grok
＼\ 🛰 H3 Rocket No. 7 Launch in 11 Days 🚀 /／

From September 7 to September 11, four SRB-3 units were attached to the rocket!

This time, it’s launching in its most powerful form 🔥

Please show your support with #GoH3F7 😊✨

ONE STEP AT A TIME!!

https://twitter.com/tnsc_JAXA/status/1976595915260690734

catdlr · « **Reply #16 on:** 10/15/2025 11:10 am »

Quote

Space Intelligence@SpaceIntel101
·

The HTV-X1 spacecraft is stacked on the H3🚀 payload adapter and is ready to be enclosed by the 2 fairing halves.
It will be HTV-X's maiden resupply flight to the International
@Space_Station
.
Launch is currently scheduled for October 21 (UTC).
https://x.com/tnsc_JAXA/status/1978386025895301297

https://twitter.com/SpaceIntel101/status/1978412736775172294

https://twitter.com/SpaceIntel101/status/1978414995412037976

ddspaceman · « **Reply #17 on:** 10/15/2025 12:15 pm »

HTV-X新型宇宙ステーション補給機
@HTVX_JAXA
Translated from Japanese by Grok
In September 2025, we loaded the DRCS-related equipment, including "Kounotori," onto the HTV-X1 vehicle, making it the largest size to date. The DRCS will be installed on "Kibo," contributing to the establishment of the Environmental Control and Life Support System (ECLSS) through on-orbit demonstration of CO2 removal.
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

Please see the mission overview of the CO2 Removal System Orbital Demonstration (DRCS) here 👀!
#JAXA #HTVX #開発日記 #GoHTVX1 #GoH3F7

https://twitter.com/HTVX_JAXA/status/1978052555319165197

catdlr · « **Reply #18 on:** 10/16/2025 11:55 am »

Quote

Space Intelligence@SpaceIntel101
·

"The HTV-X1, stowed in the fairing, was transported to the [Tanegashima] VAB (Vehicle Assembly Building) and attached to the H3 rocket!
This fairing is 20cm wider than usual. "

Quote and credit:
@tnsc_JAXA

https://twitter.com/SpaceIntel101/status/1978740372328132674

Targeteer · « **Reply #19 on:** 10/16/2025 06:19 pm »

From the NASA Russian EVA broadcast and Rob Navias. Launch on Monday will result in a 3 day approach.