Author Topic: H3 Development Update thread (Read 257430 times)

yoichi · « **Reply #160 on:** 09/11/2020 08:43 am »

https://global.jaxa.jp/press/2020/09/20200911-2_e.html

Change of Schedule for the H3 Launch Vehicle Project
September 11, 2020 (JST)

National Research & Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) has been pressing forward with the development of the H3 Launch Vehicle. In the process, a technical problem was identified regarding the LE-9 first-stage engine, which is a new engine now under development. In order to address the problem in an appropriate manner, JAXA has decided to postpone the launch of the first test flight from the Japanese fiscal year (JFY) 2020 to JFY 2021 and that of the second test flight from JFY 2021 to JFY 2022.

JAXA will deal with the LE-9 engine-related problem in an appropriate manner and make an all-out effort for the successful launch of the H3 as a new Japan’s mainstay rocket.

russianhalo117 · « **Reply #161 on:** 10/29/2020 12:21 am »

JAXA H3 and LE-9 briefings (in Japanese):

H3:

LE-9:

otter · « **Reply #162 on:** 01/23/2021 08:15 am »

https://twitter.com/nvslive/status/1352888803619430400

Quote

H3ロケット試験機1号機が三菱重工業の飛島工場で報道公開されました。 #nvslive

Web translation:

H3 Rocket Testing Vehicle No.1 was unveiled to the press at the Mitsubishi Heavy Industries' Tobishima Plant.

eeergo · « **Reply #163 on:** 01/23/2021 04:12 pm »

Side by side comparison of HII and HIII cores:

https://twitter.com/MHI_GroupJP/status/1352903907958267904

whiztech · « **Reply #164 on:** 01/23/2021 06:26 pm »

Google translation:

Quote

Mitsubishi Heavy Industries unveils new rocket H3

The first new H3 rocket was unveiled at Mitsubishi Heavy Industries' Tobishima Plant (Aichi Prefecture) on the 23rd. It will be possible to launch a satellite that is one size larger and heavier than H2A. Launch costs will be reduced to about 5 billion yen, which is half that of H2A, by making most electronic components general-purpose products. It is scheduled to be launched next year and will be shipped to Tanegashima in Kagoshima Prefecture, where the launch site is located, at the end of January.

Pipcard · « **Reply #165 on:** 01/23/2021 09:41 pm »

They should have kept the futuristic font for "NIPPON"/"JAPAN".

gongora · « **Reply #166 on:** 01/24/2021 11:33 pm »

https://twitter.com/MHI_GroupJP/status/1353251192579747845

Quote

The core of the first H3 rocket tester was shipped today in a special container.

Fuji · « **Reply #167 on:** 01/25/2021 08:15 am »

H3 rocket latest CG.

https://s3-ap-northeast-1.amazonaws.com/jaxa-jda/http_root/photo/P100013200/410017a4ce9e79ec8a599c4c4eea7046.png

https://s3-ap-northeast-1.amazonaws.com/jaxa-jda/http_root/photo/P100013202/8c6f5305bb74869963ede1ba4123f427.png

https://s3-ap-northeast-1.amazonaws.com/jaxa-jda/http_root/photo/P100013203/ddfd7a796a6ab032334bc616735d12db.png
Left to right H3-30S, H3-22S, H3-22L and H3-24L configuration.

Fuji · « **Reply #168 on:** 01/25/2021 08:19 am »

Newly arrived video.

H3 Test Flight#1 flight sequence CG

cpushack · « **Reply #169 on:** 01/30/2021 05:42 pm »

https://twitter.com/mageshiman1025/status/1355568905788432387

Seems like the booster wanted to leave early?

eeergo · « **Reply #170 on:** 01/30/2021 05:54 pm »

https://twitter.com/NVSreporter/status/1355582728134041603

Pipcard · « **Reply #171 on:** 02/01/2021 01:07 am »

Quote from: Fuji on 01/25/2021 08:19 am

Newly arrived video.

H3 Test Flight#1 flight sequence CG

Why does it look like the H3 is sunken into the launch pad?

eeergo · « **Reply #172 on:** 02/03/2021 08:34 am »

Seems the tilt was (fortunately) not particularly harmful to the core stage: vehicle is on stand!

https://twitter.com/MHI_GroupJP/status/1356739175148515331

https://twitter.com/MHI_GroupJP/status/1356881358812024832
https://twitter.com/JAXA_jp/status/1356866311381426176

Mammutti · « **Reply #173 on:** 02/08/2021 07:46 pm »

Two solid rocket boosters have been attached to the core stage.

https://twitter.com/MHI_GroupJP/status/1358724757076647936

https://twitter.com/jaxa_wdc/status/1358870734697869319

yoichi · « **Reply #174 on:** 03/16/2021 10:33 pm »

H3 Rocket Cryogenic propellant filling test(roll-out)

zubenelgenubi · « **Reply #175 on:** 03/17/2021 05:13 am »

https://twitter.com/TylerG1998/status/1372016225862217728

Quote from: Tyler Gray

The first H3 rocket built by JAXA/MHI has been rolled out to LA-Y2 at the Tanegashima Space Center for integrated tests/WDRs in preparation for its maiden launch.
We could see that flight take place in the coming weeks.

https://twitter.com/koumeiShibata/status/1371974779616432131

Quote from: Google translate

You can see that the H3 rocket is installed in the mobile launch pad. (2021/03/17 From the movement of the aircraft for cryogenic inspection)

JEF_300 · « **Reply #176 on:** 01/13/2022 05:26 pm »

Just using this excellent article from back in September as an excuse to bump the thread. H3 is supposed to launch this year, but I've found nothing narrowing the launch date down further than that.

https://www.nasaspaceflight.com/2021/09/japan-h3-engine-certification-first-flight/

Galactic Penguin SST · « **Reply #177 on:** 01/18/2022 03:49 am »

https://twitter.com/cosmic_penguin/status/1483298907908022273?s=21

russianhalo117 · « **Reply #178 on:** 01/20/2022 06:04 am »

Joint Press Briefing:

JEF_300 · « **Reply #179 on:** 01/21/2022 10:49 pm »

Quote from: russianhalo117 on 01/20/2022 06:04 am

Joint Press Briefing:

I watched this live. I don't speak Japanese and so got very little out of it, but there were a couple animation which were helpful. It seems that the LE-9 engine problem, which is going to keep H3 grounded for at least this quarter, involves the turbopump blade resonating. In the presentation, there was an animation where it looked like it was warping.

Here's the official documentation, which I'll probably run through google translate in a bit.

https://www.jaxa.jp/press/2022/01/20220121-1_j.html