YDH-28
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The YDH-28 (Formal designation: 28식 대함 유도탄 / 二八式對艦誘導彈, i-pal-sik daeham yudotan, "Type 28 anti-ship missile;" Short designation 유대함-28 Yudaeham-ipal "YDH-28") is a type of subsonic anti-ship missile developed in Menghe during the early 2000s. It is intended as a heavier, longer-range counterpart to the YDH-26, and it can be fired from the Mark 41 Vertical Launching System or from specialized vertical launch tubes on submarines. It also has a land-attack cruise missile variant, designated SY-28.
Development
The YDH-28 was developed in parallel with the lighter, shorter-ranged YDH-26, and was intended to complement it, not replace it. While the YDH-26 would be used for self-defense and strikes on low-value targets, the more expensive YDH-28 would be used for long-distance strikes.
Design
Variants (YDH-28)
SY-28
The SY-28 (Formal designation: 28식 순항 유도탄 / 二八式巡航誘導彈, i-pal-sik sunhang yudotan, "Type 28 cruise missile;" Short designation 순유-28 Sunyu-ipal "SY-28") is a land-attack cruise missile based on the YDH-28 airframe. It uses the same missile body, turbojet engine, and launch interface as the YDH-28, but with a different warhead module and guidance system. Rather than active radar homing, the SY-28 relies on a combination of inertial guidance, satellite guidance, and terrain contour matching, and can follow a pre-programmed indirect course to the target, including low-altitude terrain-following to avoid detection. Like the YDH-28, the missile's datalink can also transmit targeting information to a nearby friendly ship or aircraft, useful for assessing strike damage from preceding missiles.