Author Topic: KARI: KSLV-II Development Updates and Discussion Thread  (Read 46099 times)

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #20 on: 11/28/2018 06:00 am »
Launch should be happening about now.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline jcm

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #21 on: 11/28/2018 06:05 am »
Launch occurred on time
-----------------------------

Jonathan McDowell
http://planet4589.org


Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #23 on: 11/28/2018 06:10 am »
A later view of the contrail.

twitter.com/SKorea_rocket/status/1067675499281825793

"[KSLV-II TLV] TLV has lifted-off. Seems good."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #24 on: 11/28/2018 06:12 am »
Launch success!

twitter.com/SKorea_rocket/status/1067677280833462272

[KSLV-II TLV] TLV has made it's goal : 143-second burn of the 75tf engine. Mission SUCCESS!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #25 on: 11/28/2018 06:15 am »
Past apogee.

twitter.com/SKorea_rocket/status/1067678261088382978

[KSLV-II TLV] Vehicle has passed its apogee! (180~220km)
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #26 on: 11/28/2018 06:20 am »
Launch photos.

twitter.com/SKorea_rocket/status/1067679226415919105

[KSLV-II TLV] "Mission success" - Photos are coming out. High-quality photo will come out 12 minutes later.
« Last Edit: 11/28/2018 06:24 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #27 on: 11/28/2018 06:23 am »
Official success.

twitter.com/SKorea_rocket/status/1067680091998539776

[KSLV-II TLV] More photos coming out - Mission is a OFFICIAL SUCCESS, according to KARI.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #28 on: 11/28/2018 06:30 am »
twitter.com/SKorea_rocket/status/1067681773528576002

Official : KSLV-II TLV lifted off (16:00KST 11/28) and passed its apogee (185km~), finally falled to the sea. (somewhere near Jeju-Japan) And, It's SUCCESS has been announced. - Which means, Liquid rocket engine technology of South Korea is now proved.
« Last Edit: 11/28/2018 06:30 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #29 on: 11/28/2018 06:46 am »
twitter.com/SKorea_rocket/status/1067682477085323264

[KSLV-II TLV] Official Photos are coming out. (credit=KARI)
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #30 on: 11/28/2018 06:46 am »
Launch video.

"Launch Success! We will publish the launch as a video."

https://twitter.com/kari2030/status/1067684625529503745
« Last Edit: 11/28/2018 06:48 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #31 on: 11/28/2018 06:49 am »
"[KSLV-II TLV] Official Launch Video. (Credit=KARI)"

https://twitter.com/SKorea_rocket/status/1067686029887295488
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #32 on: 11/28/2018 07:06 am »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #33 on: 11/28/2018 07:11 am »
Burn time of 151 s and altitude of 209 km.

twitter.com/SKorea_rocket/status/1067691038045696000

[KSLV-II TLV] New Info : TLV engine's actual burn time was 151 seconds, which is clearly success. (Goal is 143s) Also, the apogee was 209km.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #34 on: 11/28/2018 07:19 am »
Another video of the launch.

Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #35 on: 11/28/2018 07:24 am »
The control room.

Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline wesley

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #36 on: 11/29/2018 12:34 am »
I was at an observation spot 7km away from the launch site. Here's my video. Attached is a couple of the best frames I could get out of it. It was pretty hazy that day, but the 125x optical zoom did its job.



Related blog post: http://tool-box.info/blog/archives/2663-Watching-a-rocket-launch-NuriKSLV-II-TLV.html
« Last Edit: 11/29/2018 12:45 am by wesley »

Offline Steven Pietrobon

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #37 on: 11/29/2018 08:22 am »
TLV in 4K!

Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline edkyle99

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #38 on: 11/29/2018 09:10 pm »
Is the first stage of this test vehicle essentially the second stage of the planned KSLV-II?  Or is it merely the same 2.6 meter diameter as the second stage?

 - Ed Kyle

IIRC it uses the same structure as the planned KSLV-II 2nd stage but uses only a single engine: https://forum.nasaspaceflight.com/index.php?topic=38220.20
Right, but note that the KSLV-2 second stage will also only use one engine, albeit with either a vacuum-optimized engine version or with a nozzle extension. 

 - Ed Kyle

Offline Lucid Nonsense

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Re: KARI: KSLV-II Development Updates and Discussion Thread
« Reply #39 on: 11/29/2018 09:56 pm »
Is the first stage of this test vehicle essentially the second stage of the planned KSLV-II?  Or is it merely the same 2.6 meter diameter as the second stage?

 - Ed Kyle

IIRC it uses the same structure as the planned KSLV-II 2nd stage but uses only a single engine: https://forum.nasaspaceflight.com/index.php?topic=38220.20
Right, but note that the KSLV-2 second stage will also only use one engine, albeit with either a vacuum-optimized engine version or with a nozzle extension. 

 - Ed Kyle

There is no sure way of knowing on a highly technical level but by infering from Korean media reports it seems like the TLV has a single first-stage/sea-level engine from the actual KSLV-2, identical propellant tank design and outer mold line to KSLV-2 second stage, a dummy payload on top that laregly resembles the outer mold line of the KSLV-2 stage 3 and fairing, and additional avionics/interfaces so it can be launched from the ground.

 

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