Author Topic: North Korea Space  (Read 14371 times)

Online plutogno

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North Korea Space
« on: 09/20/2016 10:45 AM »
A thread for North Korea space activities not related with specific orbital launches.

North Korea has carried out a "successful" ground test of a new rocket engine to launch satellites
http://www.bbc.com/news/world-asia-37414191

Quote
The engine tested would give the country "sufficient carrier capability for launching various kinds of satellites, including Earth observation satellite at a world level", the report added.
Mr Kim, KCNA said, called for more rocket launches to turn the country into a "possessor of geostationary satellites in a couple of years to come."
« Last Edit: 09/20/2016 08:14 PM by Satori »

Re: North Korea Space
« Reply #1 on: 09/20/2016 07:59 PM »
Test of New Carrier Rocket Engine for Geo-stationary Satellite Inspected

http://tinyurl.com/znu86d9

« Last Edit: 09/20/2016 08:15 PM by Satori »

Online Kryten

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Re: North Korea Space
« Reply #2 on: 09/20/2016 08:28 PM »
http://www.kcna.kp/kcna.user.home.retrieveHomeInfoList.kcmsf
Quote
   Pyongyang, September 20 (KCNA) -- Kim Jong Un, chairman of the Workers' Party of Korea, chairman of the State Affairs Commission of the DPRK and supreme commander of the Korean People's Army, visited the Sohae Space Center to guide the ground jet test of a new type high-power engine of a carrier rocket for the geo-stationary satellite.
    The newly developed high-power engine is a single engine whose thrust is 80 tf.

    The test was aimed to make a final confirmation of the feature of combustion chamber, operation accuracy of valves and control systems and structural reliability of the engine during 200 seconds-long working time.

    Kim Jong Un issued an order to conduct the test.

    The moment the engine spewed out huge flames with deafening sound.

    The test showed that thrust and other technological indexes of the engine accurately reached the estimated values and the feature values of all systems of the engine remained stable throughout the working time.

    The successful manufacture of the engine provided a firm scientific and technological guarantee for developing and completing the carrier rocket for geo-stationary satellite during the 5-year program for national aerospace development and made it possible to acquire sufficient carrier capability for launching various kinds of satellites including earth observation satellite at a world level.
The KCNA statement here says the '5-year program for national aerospace development' was promulgated in 2016, so they're saying they'll be doing GSO launches before 2021.

Online Steven Pietrobon

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Re: North Korea Space
« Reply #3 on: 09/21/2016 06:59 AM »
I'm wondering how they are going to launch geostationary satellites from North Korea. Launching East or South East overflies Japan and North-East overflies China or Russia. They could fly South, but that's a huge payload penalty. Maybe they'll use a floating launch platform.

The exhaust looks fairly clear out the nozzle with an orange tint. That probably means they are using storable propellants.
« Last Edit: 09/21/2016 07:01 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Re: North Korea Space
« Reply #4 on: 09/22/2016 05:48 AM »
North Korea’s New Rocket Engine Test: What Does It Mean?

http://allthingsnuclear.org/dwright/north-koreas-new-rocket-engine-test






Offline ISNJH

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Re: North Korea Space
« Reply #5 on: 09/30/2016 10:30 PM »
38North releases pic of reconstruction in the works of the new control center first seen in Februay KMS-4 launch.  https://twitter.com/38NorthNK/status/781956258572210176





Re: North Korea Space
« Reply #6 on: 10/09/2016 08:22 AM »
North Korea’s Sohae Launch Facility: Activity at Launch Pad and Rocket Engine Test Area

http://38north.org/2016/10/sohae100816/




Re: North Korea Space
« Reply #7 on: 10/18/2016 08:06 AM »
Activity at North Korea’s Sohae Launch Facility: Continued Infrastructure Improvements

http://38north.org/2016/10/sohae101716/












Re: North Korea Space
« Reply #8 on: 11/16/2016 08:30 AM »
Sohae Satellite Launching Station: Test Unlikely in the Near Future

http://38north.org/2016/11/sohae111516/


No signs of recent engine test.


Road from VIP observation and telemetry building has been paved.


No activity at the launch pad.


Construction continues at the Support and Warehouse Area.


Railcars and construction continue at rail station.



Re: North Korea Space
« Reply #9 on: 01/14/2017 07:20 AM »
Sohae Satellite Launching Station: No Signs of an Upcoming Launch

http://38north.org/2017/01/sohae011317/


Figure 1. The rail-mounted environmental shelter was moved back to the main apron in late December and remains there


Figure 2. Roads throughout the facility have been “sealed” (paved).


Figure 3. A new road has been built, leading to new cleared area


Figure 4. Roads leading to and from the launch pad have been sealed along with the pad itself.


Figure 5. Construction continues at a slow pace at the support and warehouse area.


Figure 6. Work on a probable rail station north of the secure area has been suspended.


Figure 7. Construction continues at a slow pace at the housing area.

Offline Rocket Science

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Re: North Korea Space
« Reply #10 on: 02/12/2017 12:28 PM »
North Korea tests IRBM...Just to add a little excitement to to weekend meeting between Japan and the US... ;)
http://www.cnn.com/2017/02/12/asia/north-korea-missile-launch-analysis/
http://www.reuters.com/article/us-northkorea-missiles-idUSKBN15Q0TE
 
« Last Edit: 02/12/2017 12:31 PM by Rocket Science »
"The laws of physics are unforgiving"
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Offline Phil Stooke

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Re: North Korea Space
« Reply #11 on: 02/14/2017 08:20 PM »
Perhaps we should tell them that we can't possibly take them seriously until they send something to the Moon.

Offline josespeck

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Re: North Korea Space
« Reply #12 on: 03/19/2017 04:46 PM »

Re: North Korea Space
« Reply #13 on: 03/19/2017 05:04 PM »
Kim Jong Un Watches Ground Jet Test of Newly Developed High-Thrust Engine

http://www.kcna.kp/kcna.user.special.getArticlePage.kcmsf








Offline josespeck

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Re: North Korea Space
« Reply #14 on: 03/19/2017 05:23 PM »

Online FutureSpaceTourist

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Re: North Korea Space
« Reply #15 on: 03/19/2017 06:55 PM »

Offline edkyle99

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Re: North Korea Space
« Reply #16 on: 03/20/2017 12:06 AM »
Storables.  Now we are seeing an engine that uses somewhat practical missile technology. 

 - Ed Kyle

Offline Danderman

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Re: North Korea Space
« Reply #17 on: 03/20/2017 01:47 AM »
So, it's 80 tons of thrust, and it looks like vernier engines, all using storable propellants. So, what is the origin of this engine? Is it derived from a YF-21 or similar engine? Or is it an R-29 engine derivative?
« Last Edit: 03/20/2017 02:01 AM by Danderman »

Online Steven Pietrobon

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Re: North Korea Space
« Reply #18 on: 03/20/2017 06:28 AM »
This looks to be the same engine that was tested previously, but now with four small vernier engines. Their press release says it is their own design. In the later pictures one screen shows five curves. Probably the large one for the main engine and the four smaller ones for the four verniers. The curves could be showing thrust or chamber pressure versus time.

http://exploredprk.com/press/kim-jong-un-watches-ground-jet-test-of-newly-developed-high-thrust-engine/
« Last Edit: 03/20/2017 06:32 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Michel Van

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Re: North Korea Space
« Reply #19 on: 03/20/2017 07:25 AM »
Looking on engine in Teststand

it's Gas-generator cycle rocket engine with four vernier thruster.

Based on Childish reaction of Military and there Great Leader
I believe  this is a indigenous development from North Korea


Open question
This engine used four  vernier thruster, Why ?
it's imply use in second stage,

But 80 tons trust ? i have not found any information on thrust value of this engine.
If it's  really 80 metric tons then North Korea got chance to build rocket that bring 120 Kg in low orbit
Or SLBM in size of R-29 SLBM... 

Online Steven Pietrobon

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Re: North Korea Space
« Reply #20 on: 03/20/2017 08:16 AM »
This engine used four  vernier thruster, Why ?

The verniers are for thrust vector control. The main nozzle is fixed in place. Thor used a similar system, but with only two verniers.

Quote
it's imply use in second stage,

Then what is the first stage? I think this will be used on a first stage initially.

Quote
But 80 tons trust ? i have not found any information on thrust value of this engine.
If it's  really 80 metric tons then North Korea got chance to build rocket that bring 120 Kg in low orbit
Or SLBM in size of R-29 SLBM... 

That could be the plan. The next step might be to cluster the engines Space-X style and then use this engine on an upper stage. Another possibility is to cluster several cores.
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: North Korea Space
« Reply #21 on: 03/21/2017 12:18 AM »
This engine used four  vernier thruster, Why ?
The verniers are for thrust vector control. The main nozzle is fixed in place. Thor used a similar system, but with only two verniers.
The difference was that Thor's main chamber swiveled too, but of course it could only provide pitch/yaw.  The twin verniers added roll control, and they also provided three-axis control during a brief vernier-only phase after the main engine shut down.

If the main chamber is fixed, four verniers are typically used to provide three-axis control.  There are many examples, most often in Russia, China, India, etc.

 - Ed Kyle

Offline russianhalo117

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Re: North Korea Space
« Reply #22 on: 03/21/2017 01:05 AM »
This engine used four  vernier thruster, Why ?

The verniers are for thrust vector control. The main nozzle is fixed in place. Thor used a similar system, but with only two verniers.

Quote
it's imply use in second stage,

Then what is the first stage? I think this will be used on a first stage initially.

Quote
But 80 tons trust ? i have not found any information on thrust value of this engine.
If it's  really 80 metric tons then North Korea got chance to build rocket that bring 120 Kg in low orbit
Or SLBM in size of R-29 SLBM... 

That could be the plan. The next step might be to cluster the engines Space-X style and then use this engine on an upper stage. Another possibility is to cluster several cores.
Until ULA DII retires its verniers still play its original role going back to the first Thor.

Offline josespeck

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Re: North Korea Space
« Reply #23 on: 03/21/2017 04:00 PM »
But 80 tons trust ? i have not found any information on thrust value of this engine.
If it's  really 80 metric tons then North Korea got chance to build rocket that bring 120 Kg in low orbit
Or SLBM in size of R-29 SLBM...

Falcon1 46 t  ----->  180-670 kg to LEO (https://en.wikipedia.org/wiki/Falcon_1)

NorthKorea New Engine 80 t ----> 120 kg to LEO ?
« Last Edit: 03/21/2017 04:01 PM by josespeck »

Offline Michel Van

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Re: North Korea Space
« Reply #24 on: 03/22/2017 03:19 AM »
But 80 tons trust ? i have not found any information on thrust value of this engine.
If it's  really 80 metric tons then North Korea got chance to build rocket that bring 120 Kg in low orbit
Or SLBM in size of R-29 SLBM...

Falcon1 46 t  ----->  180-670 kg to LEO (https://en.wikipedia.org/wiki/Falcon_1)

NorthKorea New Engine 80 t ----> 120 kg to LEO ?

That's base on assumption that new North Korean rocket is like a R-29 SLBM
off corse it they build a Titan II size ICBM the Payload is now 3 tons

Offline Blackstar

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Re: North Korea Space
« Reply #25 on: 04/20/2017 10:36 PM »
http://foreignpolicy.com/2017/04/19/the-united-states-isnt-hacking-north-koreas-missile-launches/

"Since 2014, about three-quarters of Pyongyang’s launches have succeeded. My colleague Shea Cotton keeps a database of every North Korean missile launch. Of the 66 missiles that North Korea launched during 2014 and after, 51 have succeeded. If hacking is playing any role, it is defeating a trivial number of missiles. A .230 average isn’t enough to keep you in the major leagues. And it’s a lousy batting average against nuclear-armed missiles."

Re: North Korea Space
« Reply #26 on: 05/19/2017 07:50 AM »
North Korea’s Sohae Satellite Launching Station: Facility Upgrades Continue

http://38north.org/2017/05/sohae051817/








Re: North Korea Space
« Reply #27 on: 06/16/2017 09:14 PM »

Re: North Korea Space
« Reply #28 on: 06/28/2017 09:35 AM »

Offline zhangmdev

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Re: North Korea Space
« Reply #29 on: 07/04/2017 08:25 AM »

it's imply use in second stage,


The main engine nozzle seems too small for 2nd stage use.

A few examples of Chinese YF-24 engines, 4 tiny vernier thrusters, 1 huge main engine.

http://www.b14643.de/Spacerockets/Specials/Chinas_YF-21-24_engines/index.htm

Online Lar

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Re: North Korea Space
« Reply #30 on: 07/04/2017 02:21 PM »
A couple of posts about missiles were moved to the correct topic (we have a topic for DPRK missiles, in the suborbital area)

http://forum.nasaspaceflight.com/index.php?topic=40159.0
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Online docmordrid

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Re: North Korea Space
« Reply #31 on: 08/14/2017 04:08 PM »
This International Institute for Strategic Studies analysis reports it's a single chamber RD-250 variant,

Link....
« Last Edit: 08/14/2017 04:09 PM by docmordrid »
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