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International Space Flight (ESA, Russia, China and others) => Other Launchers (Korean, Brazilian etc.) => Topic started by: Fzapper on 04/20/2017 02:18 am

Title: DPRK Solid Rocket Fuel
Post by: Fzapper on 04/20/2017 02:18 am
It has been reported that N Korea has been testing new missiles with a different color plume (translucent pink-purple flame ). Any thoughts on what this could be and how specific impulse compares to less energetic fuels?

 See http://www.bbc.com/news/world-asia-39628223
Title: Re: DPRK Solid Rocket Fuel
Post by: Fzapper on 04/20/2017 02:51 am
Maybe relevant: http://38north.org/2016/04/schilling041116/

Refers to the April test but  here the plume is orange unlike BBC report and also refers to liquid fuel . Discussion I thought very interesting.
Title: Re: DPRK Solid Rocket Fuel
Post by: RDoc on 07/08/2017 04:05 am
The video of the ICBM they recently launched showed no smoke trail at all. That seems pretty unusual to me, although I'm certainly no expert.

Any thoughts from experts?
Title: Re: DPRK Solid Rocket Fuel
Post by: Stan-1967 on 07/08/2017 05:00 am
Per the www.38north.org link above thread, the new NK fuel choice would be UDMH & N204.  This offers about a 15% better ISP than prior NK boost stage engines, and looks to be based ( copied really) on Russian SLBM technology.
Title: Re: DPRK Solid Rocket Fuel
Post by: Kryten on 07/08/2017 09:20 am
Pukguksong-2 is the largest solid missile they've tested so far, it's roughly in the 2,000km range class (MRBM).
https://www.youtube.com/watch?v=038FO070ebo
Title: Re: DPRK Solid Rocket Fuel
Post by: Vahe231991 on 06/05/2023 03:38 pm
Per the www.38north.org link above thread, the new NK fuel choice would be UDMH & N204.  This offers about a 15% better ISP than prior NK boost stage engines, and looks to be based ( copied really) on Russian SLBM technology.
The Pukkuksong-1 and Pukguksong-2 designs aren't based on Soviet/Russian SLBM technology. Although a number of analysts suggested that development of the Pukkuksong-1 and Pukguksong-2 was made possible by SLBM technologies given by China, Dave Schmerler of the James Martin Center of Non Proliferation Studies disputed this argument by noting that the Pukkuksong-1 has grid fins for flight stability and a single engine unlike the JL-1 (which used 4 engines), and that single-engine design of this missile is reminiscent of that of the Iranian Sejjil medium-range ballistic missile.

Links:
http://world.kbs.co.kr/service/news_view.htm?lang=e&Seq_Code=121571
https://www.nknews.org/pro/what-did-we-learn-from-north-koreas-latest-kn-11-test/