Author Topic: H3 TF-2 (Dummy main payload) - Tanegashima LC-Y2 - February 17, 2024 (00:22 UTC)  (Read 18029 times)

Online Galactic Penguin SST

After the 1st launch failure in March, the Japanese government have decided in late May not to fly a main payload on the 2nd H3 launch as originally planned (dummy main payload will be used instead), with the launch configuration also be changed to the -22 configuration to complete the qualification process planned with flight 1.

Apparently decision was just made to de-manifest ALOS-4 from the 2nd launch of the H3 rocket, with a "dummy" vehicle evaluation payload put up on it instead. Also flight 2's configuration will also be changed to the regular -22 with 2 LE-9 engines and 2 SRBs, instead of the original planned -30 without SRBs and 1 extra engine.

(see page 10 of the attached PDF)

This launch also features LE-9 1st stage engines w/ medium-term fixes to turbopump blade & combustion chamber cracks found in LE-9's development; longer term fixes are still being tested.

JAXA has later made a Request For Information for possible commercial satellites to hitch-hike on this launch earlier this month. 2 satellites have been selected yesterday:

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.

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

English news article about this decision: https://japannews.yomiuri.co.jp/science-nature/science/20230628-119164/

Quote
...The schedule of the second launch will be determined based on the progress of the investigation into the cause of the failure of the first launch.
« Last Edit: 02/14/2024 04:14 am by Galactic Penguin SST »
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https://twitter.com/jeff_foust/status/1701259891254387002

Quote
Iwao Igarashi of MHI says the failure investigation into the first H3 launch was completed last month, and the company hopes to perform a second flight before the end of the year. #WSBW
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Online Galactic Penguin SST

Cross-post; launch most likely now in 1st quarter 2024:

Per NHK the launch is scheduled on January 11, 2024, to be officially confirmed.

The launch vehicle arrived at TNSC in October. This is the 3rd last H-IIA to fly.

It also means the 2nd H3 rocket is very unlikely to fly within 2023 - as previous reports all point it to still launching within Fiscal Year 2023, a Q1 2024 launch seems very likely.
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Offline FutureSpaceTourist

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https://twitter.com/mageshiman1025/status/1738742416222687377

Quote
Draining of the fairing for H3 test machine No. 2 has already been completed.
If you have good intuition, you may be able to predict the approximate launch time.

Quote
Name of container for H3 fairing, etc.

https://twitter.com/mageshiman1025/status/1738744003846394229

Quote
From the bottom.

Offline GWR64

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FCC filing Comtech Telecommunications Corp. SES-STA-20231025-02265 [10/25/2023]

Quote
...
Explanatory Statement – Request for Special Temporary Authority for Launch Services
Comtech Telecommunications Corp. (“Comtech”), pursuant to Section 25.120 of the
Commission’s rules, hereby requests Special Temporary Authority (“STA”) to operate its fixed
transmit/receive earth station at Yona, Guam for a period of up to 180 days to communicate with
satellites to be launched during this period by the Japan Aerospace Exploration Agency
(“JAXA”). The launch window is intended to cover multiple launches using H2A and H3 launch
vehicles during which Comtech’s monitoring services will be required. The first launch using an
H2A rocket is expected to occur as early as December 28, 2023 and will place a new Earth
observation satellite in orbit. The second launch, which will be the second test flight of the H3
launch vehicle with several small experimental satellites onboard, is expected to occur at some
point during the first quarter of 2024, with a launch window beginning in early February. A full
180-day STA is requested to allow for potential launch slippage in each case.

...

The H2A launch date has already been postponed in the meantime. This is followed by H3 test flight #2. NET February or possibly later.


Online Galactic Penguin SST

NHK reports that the launch is scheduled for NET February 15, 2024.

https://twitter.com/nhk_news/status/1740009145406005252
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https://global.jaxa.jp/press/2023/12/20231228-1_e.html

Launch Schedule of the second H3 Launch Vehicle (H3TF2)
December 28, 2023 (JST)

Japan Aerospace Exploration Agency

 The Japan Aerospace Exploration Agency (JAXA) hereby announces the launch schedule of the second H3 Launch Vehicle (H3TF2: Test Flight No.2) as follows.
 The H3TF2 will carry the Vehicle Evaluation Payload-4 (VEP-4) to conduct the flight demonstration. In addition, we will capitalize on the excess launch capability of the H3TF2 by providing launch and orbit insertion opportunities for two small secondary payloads (piggyback payloads), CE-SAT-IE and TIRSAT.

Launch date   : February 15, 2024
Launch Window   : 9:22:55 (JST) through 13:06:34 (JST)
 The time is the 24-hour clock
Reserved Launch Period   : February 16 through March 31, 2024
Launch site   : Yoshinobu Launch Complex at the JAXA Tanegashima Space Center

--------------------------------------------------------------------------------------------------------------


Launch window confirmed as 00:22:55-04:06:34 UTC, February 15.

Note that after deploying the hitchhiking payloads CE-SAT-IE & TIRSAT into a 675 km SSO, the 2nd stage de-orbits & only afterward does the dummy payload (named VEP-4 - Vehicle Evaluation Payload 4, 1st 3 were on H-II 1st launch (TF1) and the first 2 launches of H-IIA (TF1/2) respectively) got deployed while on the way down to test the payload separation mechanism.
« Last Edit: 12/28/2023 02:29 am by Galactic Penguin SST »
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Offline russianhalo117

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Cross post
Shown in video:
MHI LE-5B-3 (Sea Level nozzle version) testing for H3 RTF:


Offline FutureSpaceTourist

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https://twitter.com/nvslive/status/1740212131793117616

Quote
Information about the second test vehicle has been added to the H3 rocket special site.
Rocket performance confirmation payload (VEP-4) [2.6t]
It has the same mass as ALOS-3 (Daichi-3).

#H3TF2

https://www.rocket.jaxa.jp/rocket/h3/tf2_special/index.html

Offline GWR64

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The VEP-4 looks massive. I suspect it won't burn up.
Not bad, the re-entry point is predetermined if everything goes well.
Is it known what material this large “bone” is made of?

Offline russianhalo117

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Cross post
JAXA H3 RTF Update (in Japanese) Livestream:



TF2 CG Flight Profile:


Offline sdsds

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Nice powerpoint presentation from JAXA. The first attached slide shows the vehicle is planned for slightly more than one orbital revolution. Does the second attached slide show the core will fly with one Type 1 LE-9 and one Type 1A LE-9? Third attached slide shows the cool detail of the RTF logo on the fairing.
— 𝐬𝐝𝐒𝐝𝐬 —

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Does the second attached slide show the core will fly with one Type 1 LE-9 and one Type 1A LE-9?

That is correct.
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Online YetAnotherLurker

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Does the second attached slide show the core will fly with one Type 1 LE-9 and one Type 1A LE-9?

That is correct.

What is the difference between Type 1 and Type 1A?

Online Galactic Penguin SST

Does the second attached slide show the core will fly with one Type 1 LE-9 and one Type 1A LE-9?

That is correct.

What is the difference between Type 1 and Type 1A?

Slight difference in turbopumps and fuel injector etc. to address various issues found during testing (e.g. cracks in LH2 turbopump blades). "Type 2" is still being tested with long-term fixes.
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Offline russianhalo117

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Upcoming JAXA updates teleconference livestream:

« Last Edit: 01/22/2024 05:11 pm by russianhalo117 »

Online Galactic Penguin SST

Official launch webcast:



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Offline catdlr

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All NVS Livestreams:









« Last Edit: 02/07/2024 01:26 am by catdlr »
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Online Galactic Penguin SST

Launch site weather looks really not good for the 15th (chances of thunderstorms around T-0), I think the date will slip (17th probably).

https://twitter.com/nvslive/status/1756868460397863007
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Tony De La Rosa, ...I'm no Feline Dealer!! I move mountains.  but I'm better known for "I think it's highly sexual." Japanese to English Translation.

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