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A comment on Soyuz 2.1a 3-Stage Launch [video]. Parent comment

Re:Soyuz 2.1a 3-Stage Launch [video] by hcrisp on Monday May 16, 2016 @08:52PM (#11710676)
The kerosene-burning boosters really leave amazingly clear contrails. And the separation ballet is called Korolev's cross.
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Re:Soyuz 2.1a 3-Stage Launch [video] by david-given on Tuesday May 17, 2016 @07:03AM (#11712553)
You can see yellow fire at the pointy end of the boosters for a moment as they swing round; is that some kind of separation thruster, or is it just that they're dipping into the main vehicle's exhaust stream?
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