Type 052C destroyer is equipped with HQ-9 air defense missiles
The Chinese HQ-9 is like an American SM-2 missile. It is constantly being upgraded with greater capabilities.
Type 052C destroyer - Wikipedia, the free encyclopedia
"Missiles
The Type 052C carries 48 HQ-9 naval air defence missiles in eight 6-cell 'cold launched' vertical launch systems (VLS). The Chinese VLS has a lid for each launch cell, but uses the same cold launch mechanism for each cell.[5] This eliminates the revolver system used in Russian VLS, and one single point of failure. The Chinese claim this results in lower size, weight, and maintenance costs.
The HQ-9 is a Chinese medium- to long-range, active radar homing air defence missile with a maximum range of 200 km.[6] The missile incorporates some technology from the Russian S-300.
The naval HQ-9 appears to be identical to the land-based variant."
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HQ-9 air defense missile
"The HQ-9 (Chinese: 红旗; pinyin: hóng qí, "red flag" or "red banner") is China’s new generation medium- to long-range, active radar homing air defence missile.[4][5] There are unconfirmed rumors that the HQ-9 uses guidance systems that are similar to those developed in U.S. Patriot missile technology.[3]" (Source: Wikipedia with footnotes to primary sources)
Left: HQ-12/KS-1A TELs and H-200 engagement radar; right: HQ-9 TEL and HT-233 engagement radar. (Source: Australia Air Power)
Deployed HQ-9 battery. Above, self-propelled YLC-2V to the left with its three support vehicles, in the background a HT-233 battery engagement radar. All vehicles employ the “classic” rather than more recent “pixelated” camouflage patterns. (Source: Australia Air Power)
If China is interested in the S-400, it makes perfect sense. Chinese engineers want to see the features that the Russians have incorporated into their system.
China can compare their own innovations for the indigenous HQ-9C "active radar homing air defence missile" with the Russian improvements in the S-400.
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HQ-9 - Wikipedia, the free encyclopedia
"Variants
• FT-2000 - Anti radiation version that was the first model of HQ-9 family being completed.
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HQ-9 - TVM version SAM.
• HHQ-9 — Naval version.[13]
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HQ-9A — Upgraded version, first tested in 1999 and service entry in 2001.[13]
Chinese sources claim that the HQ-9 family of systems employ much newer computing technology than imported Russian S-300PMU/PMU1/PMU2 systems, because HQ-9 is developed more than a decade later, thus allowing it to incorporate advancement in microelectronics. Due to the superior computing capability for signal processing, data processing and guidance support, this missile can have an optional semi-active radar homing (SARH) mode, because more info can be processed on board the missile itself.
• HHQ-9A — Ship-borne naval version of HQ-9A. Eight 6-cell vertical launch silos, of cylindrical shape and using "cold launch" method, mounted on the Type 052C destroyer (48 missiles in total).[14]
• FD-2000 - First revealed in the 8th Zhuhai Airshow, the export version of HQ-9, providing extra anti-stealth capability by incorporating YLC-20 passive sensor as an option.
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HQ-9B — reportedly tested in February 2006.[13] According to Jane's Information Group, this missile has a dual seeker that incorporates both SARH & imaging IR mode [15]
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HQ-9C - Currently under development, incorporating active radar homing mode."