Design
It is powered by a single R95-300 turbofan engine, with pop-out wings for cruising efficiency. It can be launched from both high and low altitudes, and flies at subsonic speeds at low levels (under 110 m/300 ft altitude). After launch, the missile's folded wings, tail surfaces and engine deploy. It is guided through a combination of an inertial guidance system plus a terrain contour-matching guidance system which uses radar and images stored in the memory of an onboard computer to find its target. This allows the missile to guide itself to the target with a high degree of accuracy, with a reported CEP of 15 meters.
The original Kh-55 had a drop-down engine; the Kh-65SE had a fixed external turbojet engine, whilst the Kh-SD had its engine inside the body of the missile.
Read more about this topic: Kh-55 (missile Family)
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—Henry David Thoreau (1817–1862)