Author Topic: Redesigned HTV:HTV-10  (Read 9060 times)

Offline Fuji

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Redesigned HTV:HTV-10
« 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 
« Last Edit: 05/20/2015 03:23 PM by Galactic Penguin SST »

Online Galactic Penguin SST

Re: Redesigned HTV :HTV10
« Reply #1 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?

Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline baldusi

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Re: Redesigned HTV:HTV-10
« Reply #2 on: 05/20/2015 03:57 PM »
This would be launched on an H-2A-204?

Offline russianhalo117

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Re: Redesigned HTV:HTV-10
« Reply #3 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.

Offline russianhalo117

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Re: Redesigned HTV:HTV-10
« Reply #4 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.

Offline Pipcard

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Re: Redesigned HTV:HTV-10
« Reply #5 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.

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.
« Last Edit: 05/21/2015 08:55 AM by Pipcard »

Offline Fuji

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Re: Redesigned HTV:HTV-10
« Reply #6 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.

Offline Ronsmytheiii

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Re: Redesigned HTV:HTV-10
« Reply #7 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
« Last Edit: 05/22/2015 03:00 AM by Ronsmytheiii »

Offline Fuji

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Re: Redesigned HTV:HTV-10
« Reply #8 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

Offline russianhalo117

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Re: Redesigned HTV:HTV-10
« Reply #9 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.
« Last Edit: 05/31/2015 08:18 PM by russianhalo117 »

Offline Patchouli

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Re: Redesigned HTV:HTV-10
« Reply #10 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.
« Last Edit: 06/08/2015 01:03 AM by Patchouli »

Offline Fuji

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Re: Redesigned HTV:HTV-10
« Reply #11 on: 07/09/2015 12:59 PM »
This redsigned HTV is now called HTV-X.

Offline Ronsmytheiii

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Offline russianhalo117

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Re: Redesigned HTV:HTV-10
« Reply #13 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

Offline Danderman

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Re: Redesigned HTV:HTV-10
« Reply #14 on: 01/27/2016 11:41 PM »
First one is scheduled to fly in 2021. With the normal delays, that would probably be 2025.


Offline yoichi

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