Time for the second test flight of H3! Hope it goes smoothly this time!
| Scheduled for (UTC) | 2024-02-17 00:22:55 |
|---|---|
| Scheduled for (local) | 2024-02-17 09:22:55 (JST) |
| Launch site | LA-Y2, Tanegashima Space Center, Japan. |
| Launch vehicle | H3-22 |
| Launch provider | Mitsubushi Heavy Industries / JAXA |
| Mission success criteria | Successful launch and deployment of payloads into Sun-Synchronous Orbit |
Livestreams
| Stream | Link |
|---|---|
| JAXA webcast (English) | https://www.youtube.com/watch?v=hEQOlhDRddI |
| JAXA webcast (Japanese) | https://www.youtube.com/watch?v=VtsUTvZRcJM |
Stats
☑️ 1st launch from LA-Y2 this year
☑️ 1st Japanese launch this year
☑️ 2nd H3 launch overall
Payload info (NextSpaceflight)
VEP 4
The VEP 4 (Vehicle Evaluation Payload 4) is a 2600 kg mass simulator payload that will be carried on the 2nd test flight of the H3 rocket, instead of the ALOS-4 Earth observation satellite as originally planned.
CE-SAT-1E
70-kilogram class optical Earth observation satellite from Canon Electronics Inc., similar to the previously launched CE-SAT-1.
TIRSAT
5 kg 3U CubeSat by Japan Space Systems and other institutes to test an infrared sensor for Earth surface observation purposes.
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CE-SAT-1E separation confirmed.
Wow, they’re giving a great detailed breakdown on the previous H3 launch failure. TL;DW, and the control systems for the second stage igniter detected a current surge and shut down. They narrowed the cause down to three potential issues and took correctional measures:
- Electrical short in the igniter itself
- Electrical short in a transistor
- Excess voltage shorted out a diode in some control circuitry
Second stage engine cutoff confirmed!
Webcast concluded. A second burn of the second stage will occur later, shortly before TIRSAT separation.
Launch webcast has started: https://www.youtube.com/watch?v=hEQOlhDRddI
Kotomi Mimura (public relations at Tanegashima) and Isao Kotani (technical commentator, engineer at JAXA) are hosting.
T-5 minutes. Weather looking good.
Fairing separation confirmed.
First stage engine cutoff, stage separation and second stage ignition confirmed!
Liftoff!
Uh, the velocity is not increasing very quickly…
Edit: Velocity ramping up quickly now! Second stage seems to be working!
SRB separation confirmed.