Author Topic: H3 development update thread  (Read 49025 times)

Online Galactic Penguin SST

Re: H-3 development update thread
« Reply #40 on: 04/10/2015 03:35 PM »
It seems that Japanese media is reporting a target cost of 50 billion yen (~$41M US) for the baseline version - if so that's a little bit higher than what I think for the (similar performance) basic F9R....but not by much. If they really can hit that target the Japanese might actually have some chance of getting a foothold in the market for the very first time.  ;)
« Last Edit: 04/10/2015 03:37 PM by Galactic Penguin SST »
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: H-3 development update thread
« Reply #41 on: 04/10/2015 06:32 PM »
Looks very Atlas V like. Does it has some defined target performances?

Offline russianhalo117

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Re: H-3 development update thread
« Reply #42 on: 04/10/2015 09:08 PM »
This is an update thread. Lets move H-III discussions here: http://forum.nasaspaceflight.com/index.php?topic=37263.0
« Last Edit: 04/11/2015 01:08 AM by russianhalo117 »

Offline Fuji

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Re: H-3 development update thread
« Reply #43 on: 04/10/2015 10:25 PM »
Looks very Atlas V like. Does it has some defined target performances?

6-7 metric tons /GSO.
H-IIA is 4.6 ton, H-IIB is 5.5 ton.

Offline yoichi

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Re: H-3 development update thread
« Reply #44 on: 07/02/2015 04:46 AM »
http://global.jaxa.jp/press/2015/07/20150702_h3.html

Announcement of the Official Naming of the Next Generation Launch Vehicle

The National Research and Development Agency, Japan Aerospace Exploration Agency (JAXA) is proud to announce the official naming of the Next Generation Launch Vehicle currently under development as follows. The name was decided in coordination with the prime contractor (Mitsubishi Heavy Industries, Ltd.)
 We will continue to develop the Next Generation Launch Vehicle in order to achieve flexible and diversified demands.

Name: H3 Launch Vehicle (Abbreviation: H3)
The major reasons for the selection is as follows:

The H stands for a successful heritage of our H-IIA/H-IIB Launch Vehicles.
The 3 implies our innovative challenge.

http://www.jaxa.jp/press/2015/07/files/20150702_rocket_j.pdf
« Last Edit: 07/02/2015 05:13 AM by yoichi »

Online Galactic Penguin SST

Re: H-3 development update thread
« Reply #45 on: 07/02/2015 10:09 AM »
http://global.jaxa.jp/press/2015/07/20150702_h3.html

Announcement of the Official Naming of the Next Generation Launch Vehicle

The National Research and Development Agency, Japan Aerospace Exploration Agency (JAXA) is proud to announce the official naming of the Next Generation Launch Vehicle currently under development as follows. The name was decided in coordination with the prime contractor (Mitsubishi Heavy Industries, Ltd.)
 We will continue to develop the Next Generation Launch Vehicle in order to achieve flexible and diversified demands.

Name: H3 Launch Vehicle (Abbreviation: H3)
The major reasons for the selection is as follows:

The H stands for a successful heritage of our H-IIA/H-IIB Launch Vehicles.
The 3 implies our innovative challenge.

http://www.jaxa.jp/press/2015/07/files/20150702_rocket_j.pdf

In other news, it looks like they have settled on 1 140 kN thrust engine on the upper stage - which according to Japanese reports would be an upgrade of the existing LE-5B rather than a new engine.

The first stage will have either 2 or 3 new 1.5 MN class engines (LE-9) - I guess it will be 2 on the GTO bound versions with SRBs and 3 on the baseline SSO version? The SRBs will have an average thrust of 2.2 MN.

It seems that Japanese media is reporting a target cost of 50 billion yen (~$41M US) for the baseline version - if so that's a little bit higher than what I think for the (similar performance) basic F9R....but not by much. If they really can hit that target the Japanese might actually have some chance of getting a foothold in the market for the very first time.  ;)

OK it's 5B yen not 50, but the target cost is holding. It won't be a game changer, but $40M US for a 4+t SSO launcher might be able to sink the Ariane 62, Vega-E and Antares 200.....  ::)
« Last Edit: 07/02/2015 10:12 AM by Galactic Penguin SST »
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline MATTBLAK

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Re: H3 development update thread
« Reply #46 on: 07/02/2015 11:01 AM »
Well, I applaud them for this! It will be an exciting project of the nature that Vulcan is.
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Offline russianhalo117

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Re: H3 development update thread
« Reply #47 on: 07/02/2015 03:44 PM »
http://global.jaxa.jp/press/2015/07/20150702_h3.html

Announcement of the Official Naming of the Next Generation Launch Vehicle

The National Research and Development Agency, Japan Aerospace Exploration Agency (JAXA) is proud to announce the official naming of the Next Generation Launch Vehicle currently under development as follows. The name was decided in coordination with the prime contractor (Mitsubishi Heavy Industries, Ltd.)
 We will continue to develop the Next Generation Launch Vehicle in order to achieve flexible and diversified demands.

Name: H3 Launch Vehicle (Abbreviation: H3)
The major reasons for the selection is as follows:

The “H” stands for a successful heritage of our H-IIA/H-IIB Launch Vehicles.
The “3” implies our innovative challenge.

http://www.jaxa.jp/press/2015/07/files/20150702_rocket_j.pdf

In other news, it looks like they have settled on 1 140 kN thrust engine on the upper stage - which according to Japanese reports would be an upgrade of the existing LE-5B rather than a new engine.

The first stage will have either 2 or 3 new 1.5 MN class engines (LE-9) - I guess it will be 2 on the GTO bound versions with SRBs and 3 on the baseline SSO version? The SRBs will have an average thrust of 2.2 MN.

It seems that Japanese media is reporting a target cost of 50 billion yen (~$41M US) for the baseline version - if so that's a little bit higher than what I think for the (similar performance) basic F9R....but not by much. If they really can hit that target the Japanese might actually have some chance of getting a foothold in the market for the very first time.  ;)

OK it's 5B yen not 50, but the target cost is holding. It won't be a game changer, but $40M US for a 4+t SSO launcher might be able to sink the Ariane 62, Vega-E and Antares 200.....  ::)

Yes, it is an upgraded LE-5B, which has potential to get new designation LE-5C upon project completion because of enhancements and next gen design for additive manufacturing. The upgraded engine will be replaced with a new engine as part of a future upgrade package, which may become H-IIIA. This replacement is not planned till a minimum of a decade from now.
« Last Edit: 07/04/2015 03:00 AM by russianhalo117 »

Online catdlr

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Re: H3 development update thread
« Reply #48 on: 07/04/2015 12:06 AM »
Press Conference on H3 rocket

Scheduled for Jul 8, 2015
National Research and Development Japan Aerospace Exploration Agency (JAXA), 2014 to the development of H3 rocket towards to it embarked on a (2014) year, 2020 year of testing machine launch Unit 1, to implement the current basic design doing. About H3 rocket under development, its aim appearance and system do the description of the beam outline. -
Days when: July 8, 2015 (Wed) 
15:30 - 16:30 , the presenter and explained the contents (. titles omitted, presentations is working title)
in 1991 about rocket JAXA first space technology sector H3 project team  project manager Tadashi Okada (Okada Masashi)  sub-manager Makoto Arita (Arita Makoto) Business Promotion Department  Planning Manager Yuji Mori (Mori Yuji)     
16:00 - 16:30 Q & A

Tony De La Rosa

Online catdlr

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Re: H3 development update thread
« Reply #49 on: 07/08/2015 07:33 PM »
Press Conference on H3 rocket

Streamed live on Jul 8, 2015
National Research and Development Japan Aerospace Exploration Agency (JAXA), 2014 to the development of H3 rocket towards to it embarked on a (2014) year, 2020 year of testing machine launch Unit 1, to implement the current basic design doing. About H3 rocket under development, its aim appearance and system do the description of the beam outline. -
Days when: July 8, 2015 (Wed) 
15:30 - 16:30 , the presenter and explained the contents (. titles omitted, presentations is working title)
15:30 ~ 4:00 PM  in 1991 about rocket JAXA first space technology sector H3 project team  project manager Tadashi Okada (Okada Masashi)  sub-manager Makoto Arita (Arita Makoto) Business Promotion Department  Planning Manager Yuji Mori (Mori Yuji)     
16:00 - 16:30 Q & A


« Last Edit: 07/08/2015 07:36 PM by catdlr »
Tony De La Rosa

Offline Fuji

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Re: H3 development update thread
« Reply #50 on: 07/08/2015 09:18 PM »
H3 Press Conference document
http://fanfun.jaxa.jp/jaxatv/files/jaxatv_20150708_h3.pdf

That was good press conference.
LE-9 thrust is more than 10 times bigger than LE-5B, how develop the such large scale leap ? (LE-9 thrust is 150 metric tons, LE-5B 14 tons)
The point is longer thrust chamber that collect more heat from chamber wall (LE-5B, LE-9 are Expander breed cycle engine).

SRB-A is almost newly developed. Visual appearance is same, but another one.


Here is Japanese text script.
http://ima.hatenablog.jp/entry/2015/07/08/153000
« Last Edit: 07/12/2015 12:37 AM by Fuji »

Online TrevorMonty

Re: H3 development update thread
« Reply #51 on: 07/08/2015 10:37 PM »
Any word regarding reusability?.
« Last Edit: 07/08/2015 10:37 PM by TrevorMonty »

Offline russianhalo117

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Re: H3 development update thread
« Reply #52 on: 07/08/2015 11:10 PM »
looks like they are targeting around 14 flights a year initially from only pad 2. Launch rate would double if pad 1 converted.
« Last Edit: 07/08/2015 11:12 PM by russianhalo117 »

Offline russianhalo117

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Re: H3 development update thread
« Reply #53 on: 07/08/2015 11:13 PM »
Any word regarding reusability?.

im not great at Japanese, but it appears answer is no.

Offline baldusi

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Re: H3 development update thread
« Reply #54 on: 07/08/2015 11:28 PM »
Any hard data one the LE-9? I would like to write a wikipedia article.

Offline russianhalo117

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Re: H3 development update thread
« Reply #55 on: 07/08/2015 11:49 PM »
Any hard data one the LE-9? I would like to write a wikipedia article.
Ill compile what i find into a PM for you.

Offline Fuji

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Re: H3 development update thread
« Reply #56 on: 07/09/2015 12:56 PM »
looks like they are targeting around 14 flights a year initially from only pad 2. Launch rate would double if pad 1 converted.

They planed only 1 pad operations for cost saving.

And Pad 2 can handle both H3 and H-IIB launch.

Offline Fuji

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Re: H3 development update thread
« Reply #57 on: 07/09/2015 01:06 PM »
Any word regarding reusability?.

im not great at Japanese, but it appears answer is no.

Sorry to late reply.

Answer is no. H3 project is not planed reusability
But, another JAXA project studied reusable rocket technology for future H3. Still concept study level.
« Last Edit: 07/09/2015 01:08 PM by Fuji »

Offline MATTBLAK

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Re: H3 development update thread
« Reply #58 on: 07/09/2015 01:27 PM »
Impressive looking hardware and concepts! I wish I could read Japanese. Anyone catch the performance to Low Earth Orbit for the 4x SRB version - both 28.5 degree or other low-inclinations and 50+plus degree orbits?
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Offline Damon Hill

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Re: H3 development update thread
« Reply #59 on: 07/09/2015 01:55 PM »
The LE-9 would be by far the highest thrust expander cycle engine ever developed, using a "bleed" or open cycle rather than a closed cycle turbopump system.  Getting that much thrust out of an expander cycle turbopump is a challenge: the specific impulse is lower as a result of the open cycle, but it's still pretty good.  I wonder what the T/W ratio is? 

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