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International Space Flight (ESA, Russia, China and others) => Japanese Launchers => Topic started by: Fuji on 05/20/2015 02:55 pm

Title: Redesigned HTV:HTV-X
Post by: Fuji on 05/20/2015 02:55 pm
MEXT(Ministry of Education, Culture, Sports, Science and Technology) announced redesigned HTV concept for 50% cost reduction.
This version will be introduced started from HTV10.

http://mainichi.jp/select/news/20150520k0000e040188000c.html 
Title: Re: Redesigned HTV :HTV10
Post by: Galactic Penguin SST on 05/20/2015 03:23 pm
If my (very bad) understanding of Japanese is correct, they are looking at cutting the cost by about 100 billion yen (~$US 82m) and lighten the spacecraft up by 30%, is that correct?

Title: Re: Redesigned HTV:HTV-10
Post by: baldusi on 05/20/2015 03:57 pm
This would be launched on an H-2A-204?
Title: Re: Redesigned HTV:HTV-10
Post by: russianhalo117 on 05/20/2015 09:42 pm
MEXT(Ministry of Education, Culture, Sports, Science and Technology) announced redesigned HTV concept for 50% cost reduction.
This version will be introduced started from HTV10.

http://mainichi.jp/select/news/20150520k0000e040188000c.html 

Link now gives an Error 404 Message. Can you find the new link please.
Title: Re: Redesigned HTV:HTV-10
Post by: russianhalo117 on 05/20/2015 09:46 pm
This would be launched on an H-2A-204?
There are H2B's in bulk order that go past HTV-9 these might be left over from now shelved HTV-R programme. There is/was a plan to flyout H-IIB and and transition  over to H-III (H-X). I dont have a config for that plan.
Title: Re: Redesigned HTV:HTV-10
Post by: Pipcard on 05/21/2015 08:50 am
There is a 404 error because the link has an extra space at the end.

Here is a proper link (http://mainichi.jp/select/news/20150520k0000e040188000c.html).

Notice what appears to be a unpressurized trunk in the rear, and how they are planning to change from solar panels wrapped around cylindrical body to folding solar paddles (while SpaceX is planning to do the opposite for their Dragon V2), which seem to have a lot more surface area.
Title: Re: Redesigned HTV:HTV-10
Post by: Fuji on 05/21/2015 12:43 pm
If my (very bad) understanding of Japanese is correct, they are looking at cutting the cost by about 100 billion yen (~$US 82m) and lighten the spacecraft up by 30%, is that correct?



That' right

Usually, MEXT's meeting presentation documents are released one or two weeks later.
I will post here at that time.
Title: Re: Redesigned HTV:HTV-10
Post by: Ronsmytheiii on 05/22/2015 02:57 am
Here is a larger image of the HTV V2:

Also, seems to me to be a remodel more like a Cygnus with unpressurized cargo now on the SM. Guessing it uses more commercial satellite components, plus ditching the unpressurized section saves weight so it can launch on the H-2

http://uchu2ch.blog.jp/archives/31003426.html
Title: Re: Redesigned HTV:HTV-10
Post by: Fuji on 05/31/2015 02:29 pm
Official document.  Useful information are not so many.
Avionics Module and Propulsion Module are integrated in a Service  Module.

http://www.mext.go.jp/b_menu/shingi/gijyutu/gijyutu2/071/shiryo/__icsFiles/afieldfile/2015/05/28/1358152_1.pdf
Title: Re: Redesigned HTV:HTV-10
Post by: russianhalo117 on 05/31/2015 06:16 pm
Official document.  Useful information are not so many.
Avionics Module and Propulsion Module are integrated in a Service  Module.

http://www.mext.go.jp/b_menu/shingi/gijyutu/gijyutu2/071/shiryo/__icsFiles/afieldfile/2015/05/28/1358152_1.pdf
Forwarded to Chris Bergin for a future HTV Article around the time of next HTV launch. All Future documents and info please pass along to Chris. the more info we give him the better the article.
Title: Re: Redesigned HTV:HTV-10
Post by: Patchouli on 06/08/2015 12:53 am
If the payload is not too significantly reduced the cost could be competitive with the US commercial cargo carriers.
Spacex would still beat them and possibly SNC as well.
Title: Re: Redesigned HTV:HTV-10
Post by: Fuji on 07/09/2015 12:59 pm
This redsigned HTV is now called HTV-X.
Title: Re: Redesigned HTV:HTV-10
Post by: Ronsmytheiii on 01/24/2016 12:41 pm
New presentation goes into more detail:

http://www.mext.go.jp/b_menu/shingi/gijyutu/gijyutu2/059/shiryo/__icsFiles/afieldfile/2015/07/16/1359656_5.pdf
Title: Re: Redesigned HTV:HTV-10
Post by: russianhalo117 on 01/27/2016 01:32 am
New presentation goes into more detail:

http://www.mext.go.jp/b_menu/shingi/gijyutu/gijyutu2/059/shiryo/__icsFiles/afieldfile/2015/07/16/1359656_5.pdf
I showed Chris and we could use an English translation whenever possible from anyone who can
Title: Re: Redesigned HTV:HTV-10
Post by: Danderman on 01/27/2016 11:41 pm
First one is scheduled to fly in 2021. With the normal delays, that would probably be 2025.

Title: Re: Redesigned HTV:HTV-10
Post by: yoichi on 07/14/2016 01:51 pm
http://www.jaxa.jp/press/2016/07/20160714_htv-x_j.html
The development status of the HTV-X
http://www.jaxa.jp/press/2016/07/files/20160714_htv-x_01_j.pdf
(685KB/Japanese)
Title: Re: Redesigned HTV:HTV-X
Post by: Galactic Penguin SST on 12/12/2017 08:43 am
The design of HTV-X seems to have somewhat evolved (now back to near current HTV sized instead of the original lighter design). Here is the PDR presentation a week ago (targeting first flight in 2021) (in Japanese): http://www.jaxa.jp/press/2017/12/files/20171206_HTV-X.pdf (http://www.jaxa.jp/press/2017/12/files/20171206_HTV-X.pdf)
Title: Re: Redesigned HTV:HTV-X
Post by: JEF_300 on 06/21/2019 03:45 am
I apologize for resurrecting this thread if there's a better one, but I couldn't find any.

The new article on the ISS schedule mentions that the first HTV-X launch will be in February of 2022.
https://www.nasaspaceflight.com/2019/06/station-planning-new-crew-launch-dates/ (https://www.nasaspaceflight.com/2019/06/station-planning-new-crew-launch-dates/)

Do we know what the current design of HTV-X is?
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 06/21/2019 04:31 am
I apologize for resurrecting this thread if there's a better one, but I couldn't find any.

The new article on the ISS schedule mentions that the first HTV-X launch will be in February of 2022.
https://www.nasaspaceflight.com/2019/06/station-planning-new-crew-launch-dates/ (https://www.nasaspaceflight.com/2019/06/station-planning-new-crew-launch-dates/)

Do we know what the current design of HTV-X is?
Yes. Look at the previous post.
Title: Re: Redesigned HTV:HTV-X
Post by: vp. on 06/21/2019 05:09 am
(https://danielmarin.naukas.com/files/2016/10/Captura-de-pantalla-2016-10-15-a-las-23.36.17-580x323.png)

(https://danielmarin.naukas.com/files/2016/10/Captura-de-pantalla-2016-10-15-a-las-23.48.36-580x367.png)

(https://danielmarin.naukas.com/files/2016/10/Captura-de-pantalla-2016-10-15-a-las-23.49.34.png)
Title: Re: Redesigned HTV:HTV-X
Post by: Steven Pietrobon on 06/21/2019 06:55 am
Looks like a more mass efficient design. The main propulsion thrusters have been deleted with all attitude thrusters consolidated to the service module. Thrusters are offset from the main body (looks like at 45 degrees). If the thrusters are pointing to the centre of mass, then can still get full efficiency.
Title: Re: Redesigned HTV:HTV-X
Post by: Asteroza on 06/21/2019 08:34 am
Certainly, having an upside down config means they can also utilize some of the space in the top cone of a payload fairing to maximize unpressurized cargo volume, plus the mount is an easy flat plate to work with. The solar panels being close to the thruster packs at first glance seems problematic, but it looks like the nozzle orientations mitigate that mostly.
Title: Re: Redesigned HTV:HTV-X
Post by: JEF_300 on 06/21/2019 02:23 pm
If I'm following the timeline correctly here, in 2015, this was the design:

(https://forum.nasaspaceflight.com/assets/37623.0/1129752.jpg)

And in 2017, this was the design.

(https://space.skyrocket.de/img_sat/htv-x__2.jpg)

Is your image an up to date representation?

(https://danielmarin.naukas.com/files/2016/10/Captura-de-pantalla-2016-10-15-a-las-23.36.17-580x323.png)
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 06/21/2019 05:25 pm
If I'm following the timeline correctly here, in 2015, this was the design:

(https://forum.nasaspaceflight.com/assets/37623.0/1129752.jpg)

And in 2017, this was the design.

(https://space.skyrocket.de/img_sat/htv-x__2.jpg)

Is your image an up to date representation?

(https://danielmarin.naukas.com/files/2016/10/Captura-de-pantalla-2016-10-15-a-las-23.36.17-580x323.png)
Image 3 title shows October 15 2016 as original date.
Title: Re: Redesigned HTV:HTV-X
Post by: Tywin on 06/21/2019 07:45 pm
I hope we see a future version for the Gateway station...and manned HTV one day...
Title: Re: Redesigned HTV:HTV-X
Post by: brickmack on 06/21/2019 11:49 pm
I hope we see a future version for the Gateway station...and manned HTV one day...

HTV-X will support Gateway flights, both as a cargo vehicle and possibly module tug (was at one point proposed as the delivery vehicle for ESPRIT, with launch on either Falcon Heavy or Ariane 6). Design changes for this seem to be relatively minimal. Manned HTV seems to be off the table now, but there were plenty of older studies on the subject (and manned ATV) that might interest you
Title: Re: Redesigned HTV:HTV-X
Post by: yoichi on 10/31/2019 06:20 am
press conference
https://www.youtube.com/watch?v=W9OK4sVV-Sk

https://fanfun.jaxa.jp/jaxatv/files/20191031_htv-x.pdf
Title: Re: Redesigned HTV:HTV-X
Post by: TrevorMonty on 10/31/2019 01:27 pm
Translation would be useful.
Title: Re: Redesigned HTV:HTV-X
Post by: lucspace on 10/31/2019 01:44 pm
Translation using Google
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 04/24/2020 02:10 am
JAXA 2020 HTV-X CGI Animation:

https://youtu.be/5mM7J1ima1g
Title: Re: Redesigned HTV:HTV-X
Post by: Steven Pietrobon on 04/24/2020 05:46 am
Some screen grabs.
Title: Re: Redesigned HTV:HTV-X
Post by: Welsh Dragon on 04/24/2020 09:14 am
Any ideas about the V-shaped solar panel arrangement? To provide better clearance for berthing manoeuvres?
Title: Re: Redesigned HTV:HTV-X
Post by: JEF_300 on 05/07/2020 02:55 am
Any ideas about the V-shaped solar panel arrangement? To provide better clearance for berthing manoeuvres?

Bumping this, since I've been wondering about this myself.
Whatever the reason, the slanted panels do look very, very good.
Title: Re: Redesigned HTV:HTV-X
Post by: TorenAltair on 05/07/2020 09:49 am
Any ideas about the V-shaped solar panel arrangement? To provide better clearance for berthing manoeuvres?

Better clearance might be one reason. Another reason might be available power. Once docked, the panels can‘t follow the sun any longer. With this arrangement, it might generate more energy iterated over one orbit although reducing peak power. The panels shouldn‘t be shaded as much as straight ones by the station as well.

Edit: typo
Title: Re: Redesigned HTV:HTV-X
Post by: Olaf on 05/19/2020 06:16 pm
https://www.nasa.gov/press-release/nasa-tv-to-air-launch-capture-of-cargo-ship-to-international-space-station

Quote
JAXA is developing a new class of HTV vehicles that will provide a reusable pressurized cargo section
That is really new. How will this work?

Quote
The new HTV-X vehicles will dock automatically to the station’s International Docking Adapters with the first flight scheduled in 2022.
Title: Re: Redesigned HTV:HTV-X
Post by: whitelancer64 on 05/19/2020 06:31 pm
https://www.nasa.gov/press-release/nasa-tv-to-air-launch-capture-of-cargo-ship-to-international-space-station

Quote
JAXA is developing a new class of HTV vehicles that will provide a reusable pressurized cargo section
That is really new. How will this work?

Quote
The new HTV-X vehicles will dock automatically to the station’s International Docking Adapters with the first flight scheduled in 2022.

The pressurized section would have a heatshield and would separate from the rest of the HTV to be recovered, like Cargo Dragon. The idea is not new, it has been kicked around for at least a decade, however, I was under the impression that it had been set aside, in favor of a lighter, not-reusable pressurized section.

It may be an error on the part of the author of the article.
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 05/19/2020 07:32 pm
https://www.nasa.gov/press-release/nasa-tv-to-air-launch-capture-of-cargo-ship-to-international-space-station

Quote
JAXA is developing a new class of HTV vehicles that will provide a reusable pressurized cargo section
That is really new. How will this work?

Quote
The new HTV-X vehicles will dock automatically to the station’s International Docking Adapters with the first flight scheduled in 2022.

The pressurized section would have a heatshield and would separate from the rest of the HTV to be recovered, like Cargo Dragon. The idea is not new, it has been kicked around for at least a decade, however, I was under the impression that it had been set aside, in favor of a lighter, not-reusable pressurized section.

It may be an error on the part of the author of the article.
The use of IDA doesn't match the 2020 JAXA animations and information for HTV-X1. The manufacturer documentation has a primary PLC with a PCBM. The Service Module has a pass thru tunnel to an optional/experimental secondary PLC which has an IDSS docking system which is exposed when removing the optionally releasable ULC (EP). It prohibits flying external cargo on one side of the ULC.
When the pass thru tunnel is not used it is filled with additional tube cylindrical commodity tanks. There is no public date and assigned mission (NET HTV-X3) to fly the experimental JAXA IDSS docking system which is to be tested at ISS and is part of their international logistics, module, crew/science transfer vehicle gateway contribution proposals/plans.

NSF as echoed in the past could request newer information when feasible. The gateway info is also found in the H-3 upgrades posts.

https://forum.nasaspaceflight.com/index.php?topic=37623.msg2010006#msg2010006

https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/
Title: Re: Redesigned HTV:HTV-X
Post by: nacnud on 05/19/2020 08:41 pm
Quote
JAXA is developing a new class of HTV vehicles that will provide a reusable pressurized cargo section
That is really new. How will this work?

Is it a mistake in translation? Wikipedia says HTV-X has the same pressurised cargo section as HTV so maybe it should say reused (as in the design) rather than reusable?
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 05/19/2020 10:04 pm
Quote
JAXA is developing a new class of HTV vehicles that will provide a reusable pressurized cargo section
That is really new. How will this work?

Is it a mistake in translation? Wikipedia says HTV-X has the same pressurised cargo section as HTV so maybe it should say reused (as in the design) rather than reusable?
It is similar in dimensions but longer also 2 internal configurations (current CBM sized rack and pallet system and IDSS sized cargo configuration for later ISS and gateway flights) refer to my previous posts first link.
Title: Re: Redesigned HTV:HTV-X
Post by: soltasto on 05/25/2020 11:37 am
I might have understood from the NASA live stream that is covering the berthing of HTV-9 that the next HTV flight, which will be an HTV-X, will dock to the ISS. Can anyone confirm?
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 05/25/2020 03:43 pm
I might have understood from the NASA live stream that is covering the berthing of HTV-9 that the next HTV flight, which will be an HTV-X, will dock to the ISS. Can anyone confirm?
Per JAXA and MHI HTV-X1 animations and information it will be berthed initially.
https://forum.nasaspaceflight.com/index.php?topic=37623.msg2010006#msg2010006
Title: Re: Redesigned HTV:HTV-X
Post by: soltasto on 05/25/2020 04:50 pm
I might have understood from the NASA live stream that is covering the berthing of HTV-9 that the next HTV flight, which will be an HTV-X, will dock to the ISS. Can anyone confirm?
Per JAXA and MHI HTV-X1 animations and information it will be berthed initially.
https://forum.nasaspaceflight.com/index.php?topic=37623.msg2010006#msg2010006

Found a replay of the stream: https://youtu.be/EGASGtlOfJY?t=2055

Quote
This is the final flight of a berthing HTV, the next generation of HTVs spacecraft will be HTV-X with the ability to dock to the international space station heading to the international docking adapters that are located on the forward end of the international space station.

So they either changed their mind and pulled forward the docking HTV-X or the NASA PAO was given incorrect information.
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 05/25/2020 05:52 pm
I might have understood from the NASA live stream that is covering the berthing of HTV-9 that the next HTV flight, which will be an HTV-X, will dock to the ISS. Can anyone confirm?
Per JAXA and MHI HTV-X1 animations and information it will be berthed initially.
https://forum.nasaspaceflight.com/index.php?topic=37623.msg2010006#msg2010006

Found a replay of the stream: https://youtu.be/EGASGtlOfJY?t=2055

Quote
This is the final flight of a berthing HTV, the next generation of HTVs spacecraft will be HTV-X with the ability to dock to the international space station heading to the international docking adapters that are located on the forward end of the international space station.

So they either changed their mind and pulled forward the docking HTV-X or the NASA PAO was given incorrect information.
The JAXA webcasts and other 2020 documentation showed HTV-X1 and mentioned HTV-X2 berthing and HTV-X3 not flying unpressurized cargo and berthing initially until its primary mission was completed then being unberthed going outside KOS then flipping around performing an experimental docking. The launch webcast only showed the active docking system minus a hatch although older documentation shows a tunnel through the SM to a second hatch in PLC bulkhead opposite of the PCBM hatch and perpendicular to the PLC's late load cargo side hatch for use after encapsulation by the PLF. For Gateway the HTV-X evolve into a tug system with PLC resupply modules, ULC pallets, propellant and gasses resupply modules, and the SM all having two active IDSS docking systems (SM tug confirmed both active). Upon return to earth the SM tug enters an elliptical orbit and first refuels as needed then loiters until its cargo arrives. One can module can dock to either end of the tug (can be either matched or mixed pairs). Then then it performs its transfer burns. It is a case of rinse and repeat.
Title: Re: Redesigned HTV:HTV-X
Post by: Ronsmytheiii on 08/15/2020 06:23 am
Looks like HTV-X may be used to supply the Artemis Gateway:

http://www.asahi.com/ajw/articles/AJ201908260031.html

Quote
In a vital lifeline for a next-generation lunar orbiting space station, the Japan Aerospace Exploration Agency (JAXA) plans to develop a larger unmanned transport spacecraft to ferry supplies.

For the development, the science ministry will earmark about 10.8 billion yen ($102 million) in its budget request for fiscal 2020, sources said.

The new spacecraft is expected to have a larger transport capacity than the unmanned supply ship, H-II Transfer Vehicle (HTV), also called Kounotori (stork), which is currently transporting goods to the International Space Station (ISS).
Title: Re: Redesigned HTV:HTV-X
Post by: MATTBLAK on 08/15/2020 06:38 am
Will the H-III rocket have enough delta-v to get an HTV-X out to the Gateway orbit?
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 08/15/2020 07:14 am
Will the H-III rocket have enough delta-v to get an HTV-X out to the Gateway orbit?
Their is a planned H-III upgrade path. See above thread and the H-III threads.
Title: Re: Redesigned HTV:HTV-X
Post by: ncb1397 on 08/15/2020 07:18 am
Will the H-III rocket have enough delta-v to get an HTV-X out to the Gateway orbit?

Yes, sort of. It requires 2 launches and earth orbit rendezvous.
Title: Re: Redesigned HTV:HTV-X
Post by: MATTBLAK on 08/15/2020 07:42 am
Excellent - that's what should be done with Vulcan-Centaur and Falcon Heavy for crewed launches. But that's another story for another thread...
Title: Re: Redesigned HTV:HTV-X
Post by: Zed_Noir on 08/15/2020 05:06 pm
Will the H-III rocket have enough delta-v to get an HTV-X out to the Gateway orbit?

JAXA could just lofted a heavily laden HTV-X to LEO and hitched a ride with a SX Moonship. Just like the original Constellation concept of the Orion riding on the Altair lander. :)

It will be a lot cheaper and quicker than uprating the H-III or developed a new transfer stage. Maybe even Maezawa-San's old ride.
Title: Re: Redesigned HTV:HTV-X
Post by: JEF_300 on 08/15/2020 08:18 pm
I've attached the image I've seen of possible H3 upgrades for lunar missions, which is from this SpaceNews article:
https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/ (https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/)

I would note that the article says they could conduct the dual launch mission by 2025/2026. So this isn't a super near term thing.

That was apparently still under consideration in March, according to the last line of this article:
https://spacenews.com/mhi-pressing-through-pandemic-toward-late-2020-h3-rocket-debut/ (https://spacenews.com/mhi-pressing-through-pandemic-toward-late-2020-h3-rocket-debut/)
Title: Re: Redesigned HTV:HTV-X
Post by: Zed_Noir on 08/15/2020 10:24 pm
I've attached the image I've seen of possible H3 upgrades for lunar missions, which is from this SpaceNews article:
https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/ (https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/)

I would note that the article says they could conduct the dual launch mission by 2025/2026. So this isn't a super near term thing.
<snip>

I remember that news article.

The key points are the lift capacity of 28.3 tonnes to LEO with the tri-core H-III Heavy variant by 2030. Which is only about 6 tonnes more than an expended Falcon 9.

Also the proposed development timeline of having all the hardware needed to go to the Gateway by 2026 is quite optimistic, IMO.
Title: Re: Redesigned HTV:HTV-X
Post by: sdsds on 08/15/2020 11:51 pm
Note in the Japanese launch thread Fuji has the first launch of H-3 in JFY 2020, which ends March 31, 2021. So we'll soon have a better read on the possible timeline for launching HTV-X. I'm particularly hopeful about the distributed launch mission architecture!

[...]
JFY 2020 - H-3 TF1 - ALOS-3 advanced optical earth observation satellite "先進光学衛星"
Title: Re: Redesigned HTV:HTV-X
Post by: SMS on 08/21/2020 09:23 am
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).

SPECIFICATIONS

Specifications of HTV-X currently under development

full length
    About 8.0 m
    (including heat shield wall)

Diameter
    About 4.4 m

Mass at launch
    About 16.0 tons

Supply Ability: Pressurized Cargo
    Up to 4.07 tons

Supply Ability: Exposed Cargo
    Up to 1.75 tons

Orbit: altitude
    300-500 km

Orbit: Orbit inclination angle
    About 51.6 degrees

Mission period:
ISS mooring period
    Up to 6 months

Mission period:
Flight ability after leaving the ISS
    Up to 1.5 years
    (technology demonstration mission period)
Title: Re: Redesigned HTV:HTV-X
Post by: Skyrocket on 08/21/2020 10:42 am
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).

If i get it right from the Google translation, the HTV-X is named "Kotonotori"
Title: Re: Redesigned HTV:HTV-X
Post by: Welsh Dragon on 08/21/2020 03:10 pm
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).

If i get it right from the Google translation, the HTV-X is named "Kotonotori"
HTV was named that already. It's not new for HTV-X
Title: Re: Redesigned HTV:HTV-X
Post by: zubenelgenubi on 08/21/2020 06:11 pm
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).
If i get it right from the Google translation, the HTV-X is named "Kotonotori"
HTV was named that already. It's not new for HTV-X

Via Google translate, does kounotori = kotonotori ?
Title: Re: Redesigned HTV:HTV-X
Post by: Bean Kenobi on 08/21/2020 08:35 pm
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).

If i get it right from the Google translation, the HTV-X is named "Kotonotori"
HTV was named that already. It's not new for HTV-X

HTV was named "Kounotori", not the same name apparently.
Title: Re: Redesigned HTV:HTV-X
Post by: Parker Huntington on 08/21/2020 08:53 pm
New site about HTV-X: https://iss.jaxa.jp/htv-x/ (only in Japanese).

If i get it right from the Google translation, the HTV-X is named "Kotonotori"
HTV was named that already. It's not new for HTV-X

HTV was named "Kounotori", not the same name apparently.

Unless Skyrocket got it from somewhere else, I think that is a typo. The JAXA website (https://iss.jaxa.jp/htv-x/) says right under HTV-X "は宇宙ステーション補給機「こうのとり」(HTV)の意志を受け継ぐ次世代の無人補給船です". Google translate spits out "Konotori" for 「こうのとり」, however the more standard romanization would be "Kounotori". I looks to me like an extra "to" got added in there by accident. Maybe even someone mistyped 「ことのとり」somewhere. Also, Kounotori comes from stork I think, but I don't think kotonotori means anything. That said, one of the forum members in Japan probably has a better answer to this.
Title: Re: Redesigned HTV:HTV-X
Post by: yg1968 on 09/25/2020 12:23 am
See below:

Quote from: Eric Berger
Japan will invest $760 million into the Artemis program in the coming fiscal year. This is a solid investment, and will make it more difficult for the program to be politically unwound.

https://twitter.com/SciGuySpace/status/1309153731175419911

Quote
The cost for developing the HTV-X cargo ship, which would deliver supplies to a new space station planned to orbit the moon, is the highest-priced item, landing at more than 60 billion yen, according to the proposed budget. That in itself is a significant increase from the 7.5 billion yen approved for the current fiscal year.

http://www.asahi.com/ajw/articles/13756702
Title: Re: Redesigned HTV:HTV-X
Post by: SMS on 09/28/2020 12:05 am
https://twitter.com/ansur_nied/status/1310191098434732033
Title: Re: Redesigned HTV:HTV-X
Post by: Olaf on 10/30/2020 07:21 am
https://twitter.com/HTVX_JAXA/status/1321637010411462661
Google translation
Quote
SpaceBD Co., Ltd. is a company that integrates onboard satellites in the microsatellite release mission performed by HTV-X1. @spacebd_inc In this mission, the free flight capability of #HTVX with adjustable altitude and phase will bring out new demand for microsatellite emission!
https://iss.jaxa.jp/htv-x/news/cargo/201029.html
Google translation
Quote
The first H-II Transfer Vehicle (HTV-X) will carry out a microsatellite (Cubesat) release mission in the technology demonstration mission phase after the departure from the International Space Station (ISS).
In this mission, a public offering was conducted from June 30, 2020 for companies that cultivate satellite users to be installed, select release satellites, and perform user integration required for release.
We are pleased to inform you that Space BD Co., Ltd. has been selected and a contract has been concluded.
Quote
In this mission, it is possible to extend the operating period of microsatellite and apply it to practical use missions by emitting satellites from higher altitudes than the ISS,
Title: Re: Redesigned HTV:HTV-X
Post by: edzieba on 11/05/2020 12:57 pm
That's a really neat capability. If the whole Lunar Gateway thing progresses, that could give the gateway-resupply HTV-X the ability to deliver microsatellite into or close to Lunar orbit! Great for telecoms relays or single-instrument mapping missions.
Title: Re: Redesigned HTV:HTV-X
Post by: vaporcobra on 12/25/2020 02:53 am
Some great renders.

https://twitter.com/HTVX_JAXA/status/1342304678697046017
Title: Re: Redesigned HTV:HTV-X
Post by: Josh_from_Canada on 03/22/2021 05:01 am
New video released
https://www.youtube.com/watch?v=R_f9uI-rDBY
Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 06/18/2021 12:49 pm
We conducted a pressure resistance / leakage test for the HTV-X Unit 1 pressurization module! The pressurized module astronauts enter during ISS mooring withstand the pressure difference between the vacuum of space, it will be required to hold the air Balloonin the test, pressurized sealed gas inside, deformation or gas Leakage was measured.

https://twitter.com/HTVX_JAXA/status/1405798215832662019
Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 07/08/2021 10:42 am
The JAXA HTV Technology Center, which has been responsible for the development and operation of "Stork", has played all roles and has been disbanded. And from July 1st, the "Automatic Docking Technology Demonstration Project Team" was launched with the aim of demonstrating with HTV-X2. Thank you for your continued support!

https://twitter.com/HTVX_JAXA/status/1413041193127014403
Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 08/06/2021 10:26 am
Space BD Co., Ltd., which was selected as a company to select satellites and make various adjustments in the microsatellite release mission scheduled to be carried out on [email protected]_inc ) Has entered into a business alliance regarding this mission, Nihon University College of Science and Technology (@NihonUniv_CST ) Was signed!

https://twitter.com/HTVX_JAXA/status/1423463132370923522
Title: Re: Redesigned HTV:HTV-X
Post by: Yiosie on 09/01/2021 10:50 pm
JAXA has released the HTV-X1 mission patch (clean version attached).

https://twitter.com/HTVX_JAXA/status/1432918513673404427

Quote from: English translation
The mission mark for HTV-X has been decided! Inheriting the history of that completed all missions, it expresses the appearance of HTV-X heading to the ISS and the moon. Did you notice the implications of the detailed design? The correct answer is https://humans-in-space.jaxa.jp/htv-x/news/project/210901.html Please refer to the!
Title: Re: Redesigned HTV:HTV-X
Post by: jacqmans on 09/16/2021 12:31 pm
Title: Re: Redesigned HTV:HTV-X
Post by: eeergo on 10/26/2021 12:59 pm
Some slides showing the mission profiles for HTV-X1 and the HTV-X2 docking demonstration!
Title: Re: Redesigned HTV:HTV-X
Post by: eeergo on 07/06/2022 11:12 am
https://twitter.com/Astro_Satoshi/status/1544590567950385152
Title: Re: Redesigned HTV:HTV-X
Post by: Steven Pietrobon on 07/07/2022 05:59 am
Translation and photo.

"Shots with all participants. The gold color in the back is the first HTV-X. Thank you all and congratulations on your hard work!"
Title: Re: Redesigned HTV:HTV-X
Post by: Zed_Noir on 07/07/2022 10:00 pm
Who is building the docking port for HTV-X2?
Title: Re: Redesigned HTV:HTV-X
Post by: Timber Micka on 07/08/2022 12:41 am
Who is building the docking port for HTV-X2?

Likely Boeing. They designed the National Docking System and they already provide the Common Berthing Mechanism for the HTV.
Title: Re: Redesigned HTV:HTV-X
Post by: Robotbeat on 07/08/2022 01:05 am
Who is building the docking port for HTV-X2?

Likely Boeing. They designed the National Docking System and they already provide the Common Berthing Mechanism for the HTV.
It’s not hard to build one. SpaceX made one. The Russians actually made the original APAS adapter on which the NDS is based.
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 07/08/2022 01:24 am
Who is building the docking port for HTV-X2?

Likely Boeing. They designed the National Docking System and they already provide the Common Berthing Mechanism for the HTV.
JAXA Docking System is a joint project by JAXA and MHI. Boeing, Energia Airbus DS and TAS could be subcontractors as the prime contractor is MHI. It is supposed to be domestically developed using the ISS MCB developed IDSS documentation.
Title: Re: Redesigned HTV:HTV-X
Post by: eeergo on 07/20/2022 10:34 am
Looks ready to go!

https://twitter.com/Astro_Kimiya/status/1546341533804544000 (https://twitter.com/Astro_Kimiya/status/1546341533804544000)
Title: Re: Redesigned HTV:HTV-X
Post by: eeergo on 08/03/2022 08:39 am
Looks ready to go!

And indeed, the pressurized module for the first HTV-X has been shipped from Nagoya to Tanegashima!

https://twitter.com/HTVX_JAXA/status/1554662174907596800
Title: Re: Redesigned HTV:HTV-X
Post by: russianhalo117 on 08/05/2022 06:44 am
https://youtu.be/7iEr5Cq8V6U
Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 08/05/2022 09:42 am
Ojarimose Tanegashima

HTV-X new space station resupply vehicle @HTVX_JAXA ·9h The HTV-X1 pressurization module has safely arrived at 🌴Tanegashima. The container with the pressurized module will be transported by land to the Tanegashima Space Center ( @tnsc_JAXA )!

https://twitter.com/tnsc_JAXA/status/1555425084780990464

Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 08/05/2022 10:37 am
"HTV-X is a resupply capsule developed mainly for transporting goods to @Space_Station  (#ISS), and @MHI_Group is responsible for dev of overall system and pressurization module. After being assembled at #Tanegashima Space Center @tnsc_JAXA, it will launch on #H3." #HTVX

https://twitter.com/SpaceIntellige3/status/1555481957865324546
Title: Re: Redesigned HTV:HTV-X
Post by: Rondaz on 08/11/2022 01:48 am
The Sierra Space business development team recently visited with @MHI_Group executives in Nagoya, Japan, and toured the company’s production facilities where the HTV-X cargo spacecraft is under development.

https://twitter.com/SierraSpaceCo/status/1557462426877960192