Safriz
BANNED
- Joined
- Aug 30, 2010
- Messages
- 20,845
- Reaction score
- -1
- Country
- Location
If you look closely, the object producing the white smoke is coming down not going up, so it cant be an active rocket stage, but a discarded one.That is a very oversimplified argument, and almost on the line of idiocy. Here's why:
The white smoke trail can be of the same liquid engine. What happens is that in upper atmosphere, the exhaust gases have a higher density than the surrounding air, hence the trail begins to appear whitish. This happens with our Ghauris too so it isn't anything different. To support my argument, you have to look at the rough sketch of HS-14's internal design:
(Courtesy: Norbert Breugge http://www.b14643.de/Spacerockets/Specials/Hwasong-14/index.htm)
This is a MASSIVE first stage. It likely burns for at least two minutes (a more realistic estimate is about 150s), before burnout.
Please try to consider other technical factors before comparing apples and pine-freakin-apples.
About burnout time Dnerp rocket a derivative of SS-18 has 120 seconds burnout time for first stage when on full load. Obviously liquid fuel rockets can be throttled unlike solid fuel ones and burnout time is not a constant thing and may vary as per launch profile. Since this Hwasong-14 was launched on Lofted trajectory, chances are that the Rocket motor was on full throttle to provide maximum lift and maximum altitude hence a relatively shorter burnout time.