Author Topic: ROK MND: Goche Yeollyo Uju Balsache - S-STEP - December 4, 2023 05:00 UTC  (Read 7077 times)

Offline Liss

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NOTAM:

Z0801/23 NOTAMN 
Q) RKRR/QWMXX/IV/BO/W/000/999/3535N12700E999
A) RKRR B) 2311290500 C) 2312060837
E) TEST ROCKET WILL BE LAUNCHED AS FLW
- PLANNED LAUNCH DATE : 29 NOV 2023
- PLANNED LAUNCH WINDOW : 0500-0800 UTC
- RESERVED LAUNCH DATE : 30 NOV 2023 - 6 DEC 2023
- INITIAL LAUNCH STAGE AREA
  1.AREA COORDINATE : 331212N1261542E-331943N1262459E-331535N1264455E
    -325020N1271826E-322755N1265210E-325818N1262338E TO THE BEGINNING
  2.VERTICAL ALTITUDE : SFC-UNL

- 1ST STAGE FALLING INFO
  1.FALLING TIME : 0520-0820 UTC
  2.FALLING AREA COORDINATE : 230533N1370644E-220354N1380414E-
    211747N1370716E-221840N1361005E TO THE BEGINNING
  3.VERTICAL ALTITUDE : SFC-UNL

- 2ND STAGE FALLING INFO
  1.FALLING TIME : 0536-0837 UTC
  2.FALLING AREA COORDINATE : 285354S1715130W-334042S1644444W-
    375958S1565032W-385510S1573351W-343310S1653152W-294300S1724002W
    TO THE BEGINNING
  3.VERTICAL ALTITUDE : SFC-UNL

REPUBLIC OF KOREA RECOMMEND RELATING CIVIL AVIATION AUTHORITIES
SHOULD TAKE PROPER SAFETY MEASURES AND OPERATORS SHOULD MONITOR
ISSUING NOTAM FROM RELATING STATES.
ADDITIONAL INFO WILL BE NOTIFIED BY FURTHER NOTAM.
CREATED: 15 Nov 2023 03:17:00
SOURCE: RKRRYNYX


Launch from Jeju-do, the second stage fells east of New Zealand at 10000 km.
« Last Edit: 12/04/2023 05:44 am by Galactic Penguin SST »
This message reflects my personal opinion based on open sources of information.

Offline Skyrocket

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Has anyone an idea what this may be?

Offline Space Lizard 2

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A 10,000-km range would qualify for an ICBM.

Is there something brewing up in Seoul we should know about?

Or is it just this start-up emerging from the woods?

http://koreabizwire.com/s-korean-startup-to-construct-offshore-rocket-launch-platform-in-jeju/247986
I watch rockets.

Offline catdlr

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A 10,000-km range would qualify for an ICBM.

Is there something brewing up in Seoul we should know about?

Or is it just this start-up emerging from the woods?

http://koreabizwire.com/s-korean-startup-to-construct-offshore-rocket-launch-platform-in-jeju/247986

There is also an ongoing thread on this company but no mention of an upcoming launch.

Perigee Aerospace
« Last Edit: 11/20/2023 10:57 am by catdlr »
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.

Offline Liss

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Talks of a South Korean solid fuel launch vehicle are several years old, and two flight tests of some test vehicles occured in 2022.
« Last Edit: 11/20/2023 11:28 am by Liss »
This message reflects my personal opinion based on open sources of information.

Offline Zed_Noir

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A 10,000-km range would qualify for an ICBM.
<snip>
Any orbital launch vehicle qualifies as an IRBM or an ICBM depending on the throw weight (payload mass). No matter how impractical due to the propellants used in the launcher.

Online Galactic Penguin SST

I think it's related to this South Korean military small orbital launch vehicle testing program: https://forum.nasaspaceflight.com/index.php?topic=56091.0

Back on the last launch in December 2022 they were planning a 4 stage sub-orbital launch in 2023:

This rocket will have 4 stages in total, of which 3 upper stages were tested until last year. This year they will launch the full scale model afaik. Full launcher also features 8 boosters, as shown in the image below. It is an ADD program with Hanwha as primary contractor.

Two launches are planned for 2025 and 2026. Improved model with 1000kg payload to 500km SSO capacity will be launched in 2026 and 2027. I'm not sure if this "improved launcher" is the version with the 8 boosters.
« Last Edit: 11/20/2023 11:17 am by Galactic Penguin SST »
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Offline russianhalo117

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Jeju-do is South Korea's largest island and houses the Jeju Civilian-Military Complex Port serving South Korean allied nuclear submarines. The island also performs controversial military weapons systems testing. The publicly listed base address is 2748-1 Daecheon-dong, Seogwipo-si, Jeju-do, South Korea which is where the purpose-built commercially developed offshore natural resources exploration platform's home base of operations is.
« Last Edit: 11/27/2023 01:59 am by russianhalo117 »

Offline slush hypergolic

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Back on the last launch in December 2022 they were planning a 4 stage sub-orbital launch in 2023:

This launch could be orbital, though nothing official AFAIK (other than a mostly reliable ROK aerospace blogger mentioning an experimental smallsat payload):

Quote
https://m.blog.naver.com/PostView.naver?blogId=snaileyes_elecket&logNo=223270294433&navType=by

고체발사체 상단에 탑재된 페이로드는 과거 S-STEP으로 불리던 초소형SAR위성이며 이번 발사를 통해 그 작동성을 검증하게 된다.
(Quoted sentence states that the solid propellant vehicle's payload is a prototype small SAR satellite previously called S-STEP).

Another piece of evidence is a South Korean public broadcaster quoting a "government source" stating that the launch excludes the "2nd stage" (to avoid overshooting the target altitude with the exceptionally light payload):

(At 1:13 in the video.)


The previous test launch included two solid and one liquid PBS stage IIRC, so the upcoming mission could exclude the "1st stage" motor from previous launches.


Either way, we'll see if / when the ROK MND reveals the mission's outcome.
« Last Edit: 11/21/2023 06:28 am by slush hypergolic »

Online Galactic Penguin SST

Whatever this is, it seems it has been delayed to next week.
https://twitter.com/kampfwagen_i/status/1729739427377819938
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Offline catdlr

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Whatever this is, it seems it has been delayed to next week.
https://twitter.com/kampfwagen_i/status/1729739427377819938

Quote
It is said that the launch delay was due to bad weather and other reasons.

English translated news article:
« Last Edit: 11/29/2023 06:15 am by catdlr »
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Online Galactic Penguin SST

Possibly rescheduled for today, 04:30 - 08:00 UTC.
Related marine navigation warnings:

291145Z NOV 23
HYDROPAC 3783/23(81).
PHILIPPINE SEA.
DNC 12.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   040430Z TO 040800Z DEC, ALTERNATE
   0430Z TO 0800Z DAILY 05 AND 06 DEC
   IN AREA BOUND BY
   23-05.55N 137-06.73E, 22-03.90N 138-04.24E,
   21-17.78N 137-07.27E, 22-18.67N 136-10.09E.
2. CANCEL HYDROPAC 3721/23.
3. CANCEL THIS MSG 060900Z DEC 23.

291104Z NOV 23
HYDROPAC 3780/23(83).
SOUTH PACIFIC.
DNC 06.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
   0430Z TO 0800Z DAILY 04 THRU 06 DEC
   IN AREA BOUND BY
   28-53.54S 171-51.30W, 37-59.58S 156-50.32W,
   38-55.10S 157-33.51W, 29-43.00S 172-40.02W.
2. CANCEL HYDROPAC 3708/23.
3. CANCEL THIS MSG 060900Z DEC 23.
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Online Galactic Penguin SST

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Offline slush hypergolic

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The ROK military confirmed that a small satellite was placed into orbit.

https://en.yna.co.kr/view/AEN20231204002651315?section=nk/nk

Quote
The space launch vehicle was launched from a barge floating in waters about 4 kilometers south of Jeju Island at 2 p.m. and placed a small Earth observation satellite into orbit at an altitude of about 650 km, the ministry said.
« Last Edit: 12/04/2023 05:08 am by slush hypergolic »

Online Galactic Penguin SST

https://en.yna.co.kr/view/AEN20231204002651315?section=nk/nk

(LEAD) S. Korea successfully conducts third test flight of solid-fuel space rocket

(ATTN: UPDATES with details in first 5 paras; CHANGES headline)
By Kim Eun-jung

SEOUL, Dec. 4 (Yonhap) -- South Korea successfully conducted a third test flight of a solid-fuel space rocket Monday, the defense ministry said, as part of efforts to build its independent space-based surveillance system against North Korea.

The space launch vehicle was launched from a barge floating in waters about 4 kilometers south of Jeju Island at 2 p.m. and placed a small Earth observation satellite into orbit at an altitude of about 650 km, the ministry said.

The 100-kilogram synthetic aperture radar (SAR) satellite is made by Hanwha Systems.

....

Apparently the vehicle has its 2nd stage left out (this stage was fired in the March and December 2022 test flights) so it's not in the full configuration, per the South Korean Ministry of Defense press release.

https://twitter.com/kampfwagen_I/status/1731556076771008739
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Offline slush hypergolic

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The payload (Hanwha's prototype small SAR satellite) has made contact with ground stations.

https://twitter.com/yonhaptweet/status/1731571084041077052


Offline Int.RocketLaunches

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More photos of the launch

Online Galactic Penguin SST

On board cameras:
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Online Galactic Penguin SST

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Offline catdlr

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On board cameras:


Galactic,  Thanks a lot for this. I was searching for myself and had given up. I'm amazed by the amount of information provided in this video.

Best
Tony
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Offline Skyrocket

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Now it would be nice if we could also get the name of the vehicle.

Offline PM3

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Now it would be nice if we could also get the name of the vehicle.

It is up to you to name it. The rest of the world will adopt the name given on your website.
"Never, never be afraid of the truth." -- Jim Bridenstine

Online Galactic Penguin SST

Per machine translation: The satellite launched was not in South Korea MoD’s original plans for this test flight, but rocket co-developer Hanhwa Aerospace approached them with their own SAR prototype satellite (apparently named S-STEP) waiting for a ride, and both agreed to replace the planned dummy payload with it. The MoD calls it a “win-win” situation.

https://m.yna.co.kr/view/AKR20231204088651504?input=tw
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Online Galactic Penguin SST

USSF 18SDS has confirmed objects reached orbit:
2023-188A/58500 (S-STEP): 636 x 653 km x 46.98°
2023-188B/58501 (rocket final stage): 424 x 653 km x 46.92°
« Last Edit: 12/04/2023 12:47 pm by Galactic Penguin SST »
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Offline russianhalo117

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Now it would be nice if we could also get the name of the vehicle.
Their is reportedly an undisclosedable internal name but not a public one. The internal name is replaced by the placeholder description name given to the media that is also in the redacted versions of national defense budget.

Offline FutureSpaceTourist

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https://twitter.com/tskelso/status/1731734753966235940

Quote
CelesTrak has GP data for 2 objects from the launch (2023-188) of a synthetic aperture radar satellite atop a solid-fuel rocket from a floating barge off Jeju Island on Dec 4 at 0500 UTC: en.yna.co.kr/view/AEN202312…. Data for the launch can be found at: https://celestrak.org/NORAD/elements/table.php?INTDES=2023-188

Offline russianhalo117

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https://twitter.com/tskelso/status/1731734753966235940

Quote
CelesTrak has GP data for 2 objects from the launch (2023-188) of a synthetic aperture radar satellite atop a solid-fuel rocket from a floating barge off Jeju Island on Dec 4 at 0500 UTC: en.yna.co.kr/view/AEN202312…. Data for the launch can be found at: https://celestrak.org/NORAD/elements/table.php?INTDES=2023-188
I want to point out that it was not floating during the launch countdown. The barge deployed its piles and jacked itself out of the water to a comparable height of Scouts San Marco Platform. Also it is not a barge, instead it was built from a converted Oil Exploration and construction platform design.

Offline catdlr

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I want to point out that it was not floating during the launch countdown. The barge deployed its piles and jacked itself out of the water to a comparable height of Scouts San Marco Platform. Also it is not a barge, instead it was built from a converted Oil Exploration and construction platform design.

I thought that too. Good catch.  On the video of the previous launch from that deck, the rocket's thrust caused water to shoot up very close to hitting the launch vehicle (LV), with one stream of water even surpassing the height of the rocket. I am curious about how the Super Heavy booster could be launched from a converted oil platform without causing a significant amount of water to shoot up into the sky, potentially affecting the buoyancy of the rig. This concern arises especially if the legs of the platform are not in contact with or anchored to the seabed.

For this rocket from Korea, a flame diverty (like the one on SeaLaunch) would doo the trick, but not for SH/SS.
« Last Edit: 12/04/2023 11:02 pm by catdlr »
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Offline Skyrocket

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Does anyone have the coordinates of the launch location?
And is this the same platform which was used for the suborbital test launches?

Online Galactic Penguin SST

Does anyone have the coordinates of the launch location?
And is this the same platform which was used for the suborbital test launches?

This article from just after the delay on November 29 gives the launch position as near Haye-dong, Seogwipo city in SW Jeju island. Another article from launch day puts the actual location as "4 km offshore".

So it's probably somewhere near 33° 13' N, 126° 22' E. I've already asked Harry Stranger @ NSF to help with finding the actual location via satellite photos.
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Online edkyle99

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This is an impressive achievement, and little remarked!  I'm calling it Solid Fuel Space Rocket (SFSR) for now, since that is the language in one of the press releases.   I wonder if it is derived from the Hyunmoo-5 missile.  I wonder about its diameter and GLOW.  I wonder if that drawing accurately shows that this was still a sub-scale (short) first stage compared to the upcoming four-stage rocket.  All of this South Korean solid motor work only dates back a few years.

 - Ed Kyle
« Last Edit: 12/05/2023 03:50 pm by edkyle99 »

Offline Skyrocket

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This is an impressive achievement, and little remarked!  I'm calling it Solid Fuel Space Rocket (SFSR) for now, since that is the language in one of the press releases.   

I have chosen to follow Jonathan McDowells proposal and to use the Korean expression "Goche Yeollyo Uju Balsache" (고체연료 우주발사체) ("Solid Fuel Space Launcher" or "SFSL") for this vehicle. As an short form, I use "GYUB".
At least until the real name becomes known someday.

I wonder if it is derived from the Hyunmoo-5 missile.  I wonder about its diameter and GLOW.

Hanwha has published the dimensions of their SAR SAT as 197cm length, 106cm width and 20cm height. Therefore the rocket diameter has to be in the 2.3 to 2.4m diameter ballpark. I have no solid information on the diameter of the Hyunmoo-5 missile, but IMHO it is most likely that the rocket motors are derived from this missile.

Offline jcm

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S-STEP now called Doory-Sat on Space-track.org
-----------------------------

Jonathan McDowell
http://planet4589.org

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