Author Topic: Epsilon F5 with RAISE-2 and 8 other satellites - November 9, 2021 (00:55 UTC) (Read 69272 times)

SPKirsch · « **Reply #20 on:** 10/01/2021 12:15 am »

Article:
https://twitter.com/TGMetsFan98/status/1443711220205379590

Quote

It’s launch day in Japan.

Article by @w_d_graham: https://nasaspaceflight.com/2021/09/epsilon-raise-2/

Webcast: youtu.be/_5P9G1zSyoc

Conexion Espacial · « **Reply #21 on:** 10/01/2021 12:18 am »

Exact time of planned launch, 00:51:21 UTC.
Transmission has already started

what_the_puck · « **Reply #22 on:** 10/01/2021 12:42 am »

T-10 minutes

List of events to occur during this launch.

Takeoff: 00:00:00
First stage engine shutdown: 00:01:48
Coping separation: 00:02:31
Separation of the first and second stage: 00:02:41
Second stage engine starting: 00:02:45
Second stage engine shutdown: 00:04:54
Separation of the second and third stage: 00:06:30
Starting the third stage engine: 00:06:34
Third stage engine shutdown: 00:08:02
Separation of the third stage and CLPS: 00:09:54
CLPS First Power On: 00:16:13
CLPS First Shutdown: 00:18:03
CLPS second power-up: 00:42:17
Second shutdown of CLPS: 00:50:54
RAISE-2 Separation: 00:52:35
TeikyoSat-4 Separation: 01:06:30
ASTERISC Separation: 01:06:53
CLPS third ignition: 01:08:34
CLPS Third Shutdown: 01:08:47
Z-Sat Separation: 01:10:06
DRUMS Separation: 01:10:29
Separation from HIBARI: 01:10:52
Separation of KOSEN-1 and ARICA: 01:11:15
NanoDragon Separation; 01:11:38

William Graham · « **Reply #23 on:** 10/01/2021 12:47 am »

From the JAXA webcast

Fuji · « **Reply #24 on:** 10/01/2021 12:48 am »

Satellite separation sequence drawing.
"分離" means separation or deploy.

Source:
https://www.mext.go.jp/kaigisiryo/content/20210927-mxt_uchukai01-000018059_6.pdf

William Graham · « **Reply #25 on:** 10/01/2021 12:49 am »

William Graham · « **Reply #26 on:** 10/01/2021 12:51 am »

Automatic countdown sequence initiated. Epsilon is on internal power.

William Graham · « **Reply #27 on:** 10/01/2021 12:52 am »

Hold - "emergency stop has been turned on, we are confirming the status"

what_the_puck · « **Reply #28 on:** 10/01/2021 12:55 am »

Scrub. Window is almost over.

William Graham · « **Reply #29 on:** 10/01/2021 12:56 am »

Quote from: what_the_puck on 10/01/2021 12:55 am

Scrub. Window is almost over.

Yes - JAXA still reporting they are "checking the status" but there's no more window left so it will be a scrub.

William Graham · « **Reply #30 on:** 10/01/2021 12:56 am »

"Malfunction found in ground station", scrub confirmed.

zubenelgenubi · « **Reply #31 on:** 10/01/2021 02:15 am »

Abort at T-?? seconds?

Asteroza · « **Reply #32 on:** 10/01/2021 03:15 am »

Quote from: zubenelgenubi on 10/01/2021 02:15 am

Abort at T-?? seconds?

I think they got below t-25 seconds?

Conexion Espacial · « **Reply #33 on:** 10/01/2021 03:48 am »

Quote from: Asteroza on 10/01/2021 03:15 am

Quote from: zubenelgenubi on 10/01/2021 02:15 am
Abort at T-?? seconds?

I think they got below t-25 seconds?

It all depends on how much delay the transmission had but I estimate that the hold was about T-10 seconds.

1 · « **Reply #34 on:** 10/01/2021 03:49 am »

The countdown voice stops in the middle of saying "15", so hold was probably called a couple of seconds before that.

Galactic Penguin SST · « **Reply #35 on:** 10/01/2021 04:48 am »

https://twitter.com/cosmic_penguin/status/1443799833567895554?s=21

bolun · « **Reply #36 on:** 10/02/2021 03:54 pm »

Cancellation of Today’s Launch of the Epsilon-5 Carrying the Innovative Satellite Technology Demonstration-2

October 1, 2021 (JST)

The Japan Aerospace Exploration Agency (JAXA) scheduled the launch of the fifth Epsilon Launch Vehicle (Epsilon-5) carrying the Innovative Satellite Technology Demonstration-2 at 9:51:21 on October 1st, 2021 (JST) from the Uchinoura Space Center and had worked towards this target; however, due to the necessity of additional examinations on the grand facilities, the emergency stop was activated approximately 19 seconds before the launch. Today’s planned launch has thus been cancelled.

JAXA will provide constant updates on the situation.

The new launch date will be announced as soon as it is determined.

https://global.jaxa.jp/press/2021/10/20211001-2_e.html

JuaniX · « **Reply #37 on:** 10/02/2021 05:53 pm »

Quote from: what_the_puck on 10/01/2021 12:42 am

...

First stage engine shutdown: 00:01:48
Coping separation: 00:02:31
Separation of the first and second stage: 00:02:41

...

51 seconds of ballistic trajectory? I might know too little about rockets, but it surprises me.
Also, coping is another word for fairing?

Thanks for the timeline in any case!

russianhalo117 · « **Reply #38 on:** 10/02/2021 06:08 pm »

Quote from: JuaniX on 10/02/2021 05:53 pm

Quote from: what_the_puck on 10/01/2021 12:42 am
...

First stage engine shutdown: 00:01:48
Coping separation: 00:02:31
Separation of the first and second stage: 00:02:41

...
51 seconds of ballistic trajectory? I might know too little about rockets, but it surprises me.
Also, coping is another word for fairing?

Thanks for the timeline in any case!

Common for majority of multistage solid rocket boost stages.

ZachS09 · « **Reply #39 on:** 10/03/2021 03:03 am »

Quote from: russianhalo117 on 10/02/2021 06:08 pm

Quote from: JuaniX on 10/02/2021 05:53 pm
Quote from: what_the_puck on 10/01/2021 12:42 am
...

First stage engine shutdown: 00:01:48
Coping separation: 00:02:31
Separation of the first and second stage: 00:02:41

...
51 seconds of ballistic trajectory? I might know too little about rockets, but it surprises me.
Also, coping is another word for fairing?

Thanks for the timeline in any case!

Common for majority of multistage solid rocket boost stages.

It's to essentially let the first stage burn out all its propellant. If you separate the first and second stages early, the residual thrust can collide the discarded stage into the rest of the launch vehicle.