Author Topic: H3 Development Update thread  (Read 254723 times)

Offline russianhalo117

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Re: H3 Development Update thread
« Reply #200 on: 11/08/2022 12:07 am »
CFT/FRF results briefing is underway on NVS via:


Offline eeergo

Re: H3 Development Update thread
« Reply #201 on: 11/08/2022 09:42 am »
Nominal 25s firing.

Rocket back in its hangar.

https://twitter.com/telstar_freemgz/status/1589787755097493504
-DaviD-

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #202 on: 11/09/2022 11:33 am »
Auto translations not great on these tweets:

twitter.com/mageshiman1025/status/1590295580630450177

Quote
Left: Cryogenic inspection (F0)
March 18, 2021 Right 1st stage actual tank stage combustion test (CFT T0)
On November 8, 2022, the day after each test, after the restrictions were lifted, the photographing time and weather conditions were different from the medium-sized launch site. is possible.

https://twitter.com/mageshiman1025/status/1590310526898573312

Quote
Similarly, the difference between the F0 aircraft and the T0 aircraft from the Takezaki launch site.
The fairing is long and short, and the position of the air conditioning duct hose on the umbilical tower side is different.
On the fairing side, the upper part of the long type is common with the short one, so it is in the same position.

Offline GWR64

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Re: H3 Development Update thread
« Reply #203 on: 11/17/2022 05:39 pm »
LE-9 test updates:
https://www.rocket.jaxa.jp/rocket/engine/le9/firingTest.html
Google translation
https://www-rocket-jaxa-jp.translate.goog/rocket/engine/le9/firingTest.html?_x_tr_sl=auto&_x_tr_tl=en

Quote
Implementation of LE-9 certified engine combustion test for H3 rocket
...
Test name    LE-9 certified engine combustion test
Test purpose    LE-9 Certified Engine Life Verification
period            Sunday, October 23, 2022 to November 2022 (planned)
place            Japan Aerospace Exploration Agency Tanegashima Space Center (Kagoshima Prefecture)
Number of tests    4 times (planned)
https://www-rocket-jaxa-jp.translate.goog/rocket/engine/le9/2022/221021.html?_x_tr_sl=auto&_x_tr_tl=en

1 Oct. 23, 240.8 sec. 11.24 MPa


----
2 Oct. 29, 241.5 sec. 6.36 MPa


----
3 Nov. 4, 257.7 sec. 10.25 MPa


----
4 Nov. 10, 250.0 sec. 10.45 MPa

« Last Edit: 11/17/2022 05:43 pm by GWR64 »

Re: H3 Development Update thread
« Reply #204 on: 12/21/2022 07:01 pm »
Here's a video from yesterday. Seems to be a general update.



EDIT: Here is the linked PDF: https://www.jaxa.jp/projects/files/youtube/cft-h3/h3_20221220_1.pdf

It seems like they had a couple of components that exceeded their allotted margins for vibrations, and an oxygen seal that was leaking after the test. Both are pretty simply fixes, so while probably quite annoying, that's actually pretty promising.
« Last Edit: 12/21/2022 07:17 pm by JEF_300 »
Wait, ∆V? This site will accept the ∆ symbol? How many times have I written out the word "delta" for no reason?

Re: H3 Development Update thread
« Reply #205 on: 12/23/2022 01:07 am »
And now this video. First launch on February 12th!

Wait, ∆V? This site will accept the ∆ symbol? How many times have I written out the word "delta" for no reason?

Online Galactic Penguin SST

Re: H3 Development Update thread
« Reply #206 on: 12/23/2022 01:58 am »
Here's a video from yesterday. Seems to be a general update.



EDIT: Here is the linked PDF: https://www.jaxa.jp/projects/files/youtube/cft-h3/h3_20221220_1.pdf

It seems like they had a couple of components that exceeded their allotted margins for vibrations, and an oxygen seal that was leaking after the test. Both are pretty simply fixes, so while probably quite annoying, that's actually pretty promising.

They have also replaced the pyrovalves used for pressurization of the 2nd stage RCS tanks due to possible relation with the failure of Epslion flight F6 this October (same manufacturer, same working principle, though different model), despite investigations still ongoing for Epsilon. A different vendor’s model used on the current H-IIA was substituted in.
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #207 on: 12/23/2022 09:44 am »


Quote
The H3 Launch Vehicle, Japan's new flagship rocket, is about to launch from the Tanegashima Space Center.
By inheriting the high launch success rate and on-time launch rate of the H-IIA Launch Vehicle, H3 will also offer a reliable launch.
We introduce the work of the Tanegashima Space Center, which supports the reliable launch.

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #208 on: 01/13/2023 07:44 am »

Offline GWR64

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Re: H3 Development Update thread
« Reply #209 on: 01/18/2023 09:30 am »
LE-9 acceptance test for H3 test flight #2

« Last Edit: 01/18/2023 09:31 am by GWR64 »

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #210 on: 01/23/2023 05:48 am »
https://twitter.com/tnsc_jaxa/status/1615900646678630400

Quote
🟠 VOS
#H3ロケットの軌跡

The work to stand the rocket on the mobile launch pad (ML5) in the large rocket assembly building (VAB) is called VOS-Vehicle On Stand 🧍🚀

It is a work to carefully assemble the rocket lifted by a crane 🧑‍🔧
In H3 test machine No. 1, disassembly work (reverse VOS) was also performed, so VOS was performed 3 times in total 👀💫

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #211 on: 01/23/2023 05:53 am »
https://twitter.com/tnsc_jaxa/status/1617365996595212288

Quote
🟠 SRB-3 binding task
#H3ロケットの軌跡

Work to connect the solid rocket booster (SRB-3) to the 1st stage fuselage was done twice 🧑‍🔧

SRB-3 once removed from the fuselage after a "cryogenic inspection" called F-0 🔥
With messages of support from everyone, it was re-attached to the 1st stage on December 26, 2022 🥹💫

Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #212 on: 01/31/2023 05:45 am »
https://twitter.com/tnsc_jaxa/status/1620285055418646530

Quote
🟠 whole machine vibration test (modal survey)
#H3ロケットの軌跡

The whole machine vibration test is a test to shake the rocket and check how it moves 🚀

Considering the characteristics of the shaking, "how to control the rocket" is examined, so it is a very important thing that affects the entire system 👀

Offline russianhalo117

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Re: H3 Development Update thread
« Reply #213 on: 02/09/2023 06:22 am »
H3:


Offline FutureSpaceTourist

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Re: H3 Development Update thread
« Reply #214 on: 02/13/2023 06:49 am »
https://twitter.com/tnsc_jaxa/status/1624937009344307201

Quote
🟠 LE-9 engine installation
#H3ロケットの軌跡

Newly developed H3 rocket first stage engine "LE-9"

The LE-9 engine for the flight of the H3 rocket test machine No. 1 has undergone an acceptance combustion test (AT: Acceptance Test)

1st unit ☝️ on September 21, 2022
Second on October 11, 2022 ✌️

was attached to the 1st stage fuselage 🔥

Offline GWR64

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Re: H3 Development Update thread
« Reply #215 on: 02/25/2023 02:11 pm »
Keep testing LE-9 diligently. 3D molded injector for launch 2 and following. (1st test of 5)
https://www.rocket.jaxa.jp/rocket/engine/le9/2023/230220.html
https://www.rocket.jaxa.jp/rocket/engine/le9/2023/230221.html

Google translate:
Quote
Results of the first LE-9 engine combustion test for the H3 rocket (blade vibration measurement test/technical data acquisition test)

February 24, 2023 Japan
Aerospace Exploration Agency

We would like to inform you of the results of the first LE-9 engine combustion test that was announced on February 20, 2023.
test day:   February 21, 2023
Testing location :Japan Aerospace Exploration Agency Tanegashima Space Center (Kagoshima Prefecture)
Test purpose:    Confirmation of vibration response of turbopump blades and acquisition of technical data for 3D molded injectors to verify countermeasures against LE-9 engine issues for H3 rocket test vehicle No. 2 and beyond.
...
« Last Edit: 02/25/2023 03:07 pm by GWR64 »

Offline Asteroza

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Re: H3 Development Update thread
« Reply #216 on: 06/08/2023 03:44 am »
Apparently there's a RFP for H-3 rideshares out now.

Not sure if this is the right link or not though
https://aerospacebiz.jaxa.jp/jaxa-smash/call-for-mission2/


EDIT

This seems to be the right URL...

https://aerospacebiz.jaxa.jp/topics/koubo/h3rfi_20230605/

Though apparently the deadline was so tight you basically had to have a satellite mostly already finished or ready to go to qualify...

There should be an announcement soon of who is gonna ride.
« Last Edit: 06/27/2023 06:30 am by Asteroza »

Offline Asteroza

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Re: H3 Development Update thread
« Reply #217 on: 06/27/2023 11:43 pm »
Looks like 2 rideshares announced for H-3 test flight 2 just now

TIRSAT, a 3U sat, and CE-SAT-1E (previously rumored to have been scheduled to ride SpaceX Transporter 9 along with it's sister sat CE-SAT-1D)

https://news.yahoo.co.jp/byline/akiyamaayano/20230627-00355449

Offline russianhalo117

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Re: H3 Development Update thread
« Reply #218 on: 12/28/2023 05:33 am »
Shown in video:
MHI LE-5B-3 (Sea Level nozzle version) testing for H3 RTF:


Not shown in video:
Early R&D Design work for proposed follow on upgrade LE-5C(-1).

Offline russianhalo117

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Re: H3 Development Update thread
« Reply #219 on: 01/09/2024 07:25 pm »
JAXA H3 RTF Update (in Japanese) Livestream:


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