Russian rockets and missiles are mostly given designations in the "R"
series (guided rockets), "S" series (unguided rockets), or "Kh" series
(this seems to be reserved for air-to-surface missiles, but I have no idea
what the significance of the prefix is; "Kh" is one letter in Russian, and
looks like an "X", so you will often see these designations quoted with an
"X" prefix instead).

NATO codenames for Russian missiles start with "A" (air to air), "G"
(surface to air), "K" (air to surface), or "S" (surface to surface).  In
addition to the names, they are also given designations consisting of a
two-letter code for the mission type ("AA", "AS", "SA", or "SS", plus some
special codes such as "AT" for "anti-tank"), an "N" for naval missiles, and
a number.

(See C.17 for current Russian air-to-air missiles)

------------------------------

--
... Ross Smith (Wellington, New Zealand) <avfaq@meanmach.actrix.gen.nz> ...
"Being in the air farce and navy means you only get to kill people by
remote control, which takes some of the fun out of it."
                                  (Steve Kieffer-Higgins, in alt.tasteless)