The Antares is unusual in that it's using solid-fuel in the second stage. I was surprised about that and a couple of questions immediately popped up which are already covered on this site: How can a solid-fuel stage control thrust and what are the advantages of using a solid-fuel upper-stage (no answers to that question at the time of this writing).

Since using a solid-fuel upper stage is unusual in a rocket that can achieve orbit, I was wondering whether there are other rockets besides the Antares that have used or are using this design?

  • $\begingroup$ Do all-solid designs like Shavit count? $\endgroup$ – Ilmari Karonen Apr 18 '19 at 8:44
  • $\begingroup$ @IlmariKaronen: Yes since it's capable of reaching orbit and the upper stages use solid-fuels. $\endgroup$ – DarkDust Apr 18 '19 at 8:58

Looks like this is going to be a list-based answer

  • $\begingroup$ en.wikipedia.org/wiki/… might be useful as source material. $\endgroup$ – Ilmari Karonen Apr 18 '19 at 9:41
  • $\begingroup$ Do kick stages really count? In principle any payload could use a solid kick stage. Main stages, like 2nd stage seem more relevant. However third stages get murky. $\endgroup$ – geoffc Apr 18 '19 at 14:29
  • 2
    $\begingroup$ “Kick stage” is technically meaningless. $\endgroup$ – Russell Borogove Apr 18 '19 at 14:59

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