Author Topic: North Korea Space  (Read 6009 times)

Offline 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.

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it's imply use in second stage,

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

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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."

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