Author Topic: H3 Development Update thread (Read 256538 times)

edzieba · « **Reply #180 on:** 01/22/2022 03:24 pm »

Quote from: JEF_300 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

From the presentation PDF (with the aid of google translate):
p.3/4 - Temperature increases during steady-state operation causes inner chamber walls to soften, then pressure transients from startup/shutdown causing inner chamber wall to deform and rupture. Chamber wall thickness to be increased. Startup & shutdown sequences to be modified (changes unspecified).
p.5/6/7/8 - Fuel turbopump blade fatigue from previously known vibration mode. Instrumented testing identified mode, and also identified flutter of blades when coupled with fluid flow. Multiple design changes to FTP blades and to pump housing geometry, also being proactively applied to OTP.

russianhalo117 · « **Reply #181 on:** 09/01/2022 05:06 pm »

H3 September 1st 1330 to 1500 JST Update:

edzieba · « **Reply #182 on:** 09/02/2022 02:38 pm »

Quote from: russianhalo117 on 09/01/2022 05:06 pm

H3 September 1st 1330 to 1500 JST Update:

Relying on machine translation, but they do appear to still be aiming for a first launch in 2022.

Galactic Penguin SST · « **Reply #183 on:** 09/02/2022 02:47 pm »

Quote from: edzieba on 09/02/2022 02:38 pm

Quote from: russianhalo117 on 09/01/2022 05:06 pm
H3 September 1st 1330 to 1500 JST Update:

Relying on machine translation, but they do appear to still be aiming for a first launch in 2022.

Fiscal Year 2022, which ends next March.

FutureSpaceTourist · « **Reply #184 on:** 09/12/2022 06:49 am »

Quote

2022年度の打上げを目指し、H3ロケット試験機1号機再始動。
H3 has got back on track toward its first flight in FY2022

zubenelgenubi · « **Reply #185 on:** 09/13/2022 06:43 pm »

https://twitter.com/jeff_foust/status/1569707584994611202

Quote from: Jeff Foust tweet

Iwao Igarashi, MHI: found good solution to turbine vibration problems in engine for H3, proved it was effective. First H3 launch now projected this fiscal year (ends March 31); will announce date after static-fire tests in November. [Sep 13]

Rondaz · « **Reply #186 on:** 09/26/2022 08:59 am »

[H3 Rocket Today's Photo] "Installing the LE-9 engine on the 1st stage aircraft" has been released. Please take a look.

https://twitter.com/JAXA_jp/status/1574307976248119296

Rondaz · « **Reply #187 on:** 10/03/2022 07:52 pm »

At the same time, the H3 rocket, which is being assembled at the Large Rocket Assembly Building VAB for the 1st Stage Full-scale Tank Stage Combustion Test (CFT), was also unveiled. Since the aircraft is under development, the shooting range was limited to the first step and the first step, but I would like to thank JAXA and MHI for the opportunity to shoot.

https://twitter.com/nvslive/status/1576912746121428993

FutureSpaceTourist · « **Reply #188 on:** 10/19/2022 05:43 am »

https://twitter.com/jaxa_jp/status/1582586241966493698

Quote

[H3 rocket today's photo]
"Satellite Fairing Coupling Operation (VOS)" has been released.
Please take a look.

https://fanfun.jaxa.jp/countdown/h3/index.html

FutureSpaceTourist · « **Reply #189 on:** 10/20/2022 05:57 am »

https://twitter.com/jaxa_jp/status/1582927107998420992

Quote

[H3 Rocket Topics]
"On approaching the final stage of development" has been released!
Project Manager Okada will tell you about the scene and preparations for the final stage of development.
Please take a look.
fanfun.jaxa.jp/countdown/h3/i…
#H3 #ロケット

FutureSpaceTourist · « **Reply #190 on:** 11/02/2022 10:37 am »

https://twitter.com/jaxa_jp/status/1587768192427995136

Quote

[press release]
Implementation of H3 Rocket Test Vehicle No. 1 1st Stage Actual Tank Stage Combustion Test

https://www.jaxa.jp/press/2022/11/20221102-2_j.html

Quote from: Google translate

Implementation of H3 Rocket Test Vehicle No. 1 1st Stage Actual Tank Stage Combustion Test
November 2, 2022
Japan Aerospace Exploration Agency

The Japan Aerospace Exploration Agency (JAXA) will conduct the first-stage actual tank stage combustion test as follows as part of the development test for the launch of the H3 rocket test vehicle No. 1 in 2022. ,i will let you know.

Record

Test purpose   :   Comprehensive confirmation of 1st stage propulsion system using actual tank

Contents of the test   :   Combining the actual tank and the LE-9 engine, the LE-9 engine is combusted in the same procedure as during launch, and the overall function is confirmed.

Implementation period   :   Sunday, November 6, 2022 to Monday, November 7, 2022

Location   :   Tanegashima Space Center Large rocket launch site

Please note that the test implementation period may change depending on the weather and work progress.

russianhalo117 · « **Reply #191 on:** 11/05/2022 04:25 am »

NVS Captive Firing Test (AKA Flight Readiness Firing Test (this stage already conducted green run testing)) Event Livestreams:
H3 Captive Firing Test Overview Briefing Session:

H3 Captive Firing Test:

H3 Captive Firing Test Result Briefing:

eeergo · « **Reply #192 on:** 11/06/2022 09:13 am »

H3 rollout completed for the core's static firing test:

https://twitter.com/Cosmic_Penguin/status/1589191784521158656
https://twitter.com/Cosmic_Penguin/status/1589197682081689600

FutureSpaceTourist · « **Reply #193 on:** 11/06/2022 12:21 pm »

Nice shots of journey to pad

twitter.com/nvsreporter/status/1589212384354512896

Quote

The aircraft [rocket] movement started at 18:30 as scheduled, and it took about 30 minutes to arrive at LP2.

https://twitter.com/nvsreporter/status/1589212966444236800

Quote

H3 test machine No. 1 CFT specification that appeared from VAB.

twitter.com/nvsreporter/status/1589213428505538560

Quote

ML5 lower dolly fairing air conditioning truck.

https://twitter.com/nvsreporter/status/1589214074927484928

Quote

H3 test machine arriving at LP2.
"Daichi 3" and the logo of the Defense Acquisition Agency on the brand new short fairing.

Rondaz · « **Reply #194 on:** 11/06/2022 06:00 pm »

From the site of the medium-sized launch site, I am grateful that the mission logo can be seen almost directly in front of me.

https://twitter.com/mageshiman1025/status/1589323390875488258

russianhalo117 · « **Reply #195 on:** 11/07/2022 06:35 am »

FRF/CFT completed firing portion now flight simulation running. Standing by test conductor success determination.

FutureSpaceTourist · « **Reply #196 on:** 11/07/2022 06:49 am »

https://twitter.com/tane_rocket/status/1589522166944763904

Quote

H3 rocket test machine No. 1 CFT
From 16:30 on November 6th
#CFT
#H3ロケット試験機1号機

FutureSpaceTourist · « **Reply #197 on:** 11/07/2022 06:50 am »

twitter.com/nvsreporter/status/1589521566949609479

https://twitter.com/nvsreporter/status/1589522650665484288

Quote

After all, the power of LE-9 x 2 units is amazing.

eeergo · « **Reply #198 on:** 11/07/2022 06:58 am »

Looks like the static fire was as long as expected (23 s), going by several long-distance recordings. Nothing obviously off-nominal in those views, pending official word.

FutureSpaceTourist · « **Reply #199 on:** 11/07/2022 07:22 am »