From the experience and technology gained from the Hsiung-Feng I development project, and extended range Hsiung-Feng II missile was developed with anti-jamming seeker and an automatic engagement capability. This antiship guided missile is 4.6 meters long, has a diameter of 0.34 meters, weighs 685 kilograms, and has a range of 80 kilometers, a speed of Mach 0.65, and a warhead weighing 180 kilograms [some reports state that the warhead weighs 225 kilograms]. Some reports claim that the top speed of the the HSIUNG-FENG II antiship guided missile is as high as Mach 0.85. But the similar United States HARPOON guided missile also has a speed of only Mach 0.75 and theTOMAHAWK guided missile has a speed of Mach 0.72.
There are three versions to be launched from sea, air and ground on various platforms. The Chungshan Institute of Science and Technology Second Institute is engaged in follow-up research and development projects, including preparatory research and development of the Hsiung Feng II-E weapon system, concerning which no details have been made public.
Taiwn's Navy deploys several batteries of Hsiung Feng II surface-to-surface missiles for coastal defense on Tung-Ying and Wu-Chiu islands. These batteries are under the control of Missile Command.
In December 2000 Taiwan's Navy announced plans to replace the Hsiung Feng-II with the Harpoon as the standard anti-ship missile on the Cheng Kung-class frigate. The decision grew from concerns for the higher cost-effectiveness of the new weapon system. Compared with the RGM -84L Harpoon missile, the Hsiung Feng-II was judged inferior in respect to range and maneuverability. The Hsiung Feng-II missiles on board the Cheng Kung-class frigates will be moved to the domestically-built Ching Chiang-class patrol boats, as well as the next-generation missile boats in a pre-production. The Hsiung Feng-II missile had been chosen for the Cheng Kung-class frigate because the US was not willing to sell the Harpoons to Taiwan when the frigates were built.
Taiwan's future SSM may be a cruise missile based on the current HSIUNG-FENG II antiship guided missile. If the HSIUNG-FENG II antiship guided missile is used as a basis for remaking the SSM, then based on cruise missile characteristics the external form and weight of the modified SSM would be basically the same as the original antiship guided missile. The range could be increased to about 230 kilometers, but the speed still would be Mach 0.65. Because of the increased range, it would be necessary to increase the amount of fuel. The weight of the warhead would be reduced to 150 or 100 kilograms and the accuracy would be about 100 meters. On December 9, 2014, the Chinese Academy of Sciences displayed the "Zengpeng" turbofan engine and micro-turbine power generation system used by Xiongfeng Type II in the aviation station in Taichung. According to the public information exhibited on the day, the engine was from the Republic of China in 1987 (1998), research and development began in three phases (three phases: fire, combustion, core engine, and full engine). In November of 1999, the whole engine was tested in full engine. This small turbofan engine can be used for long-range subsonic missiles and target aircraft, and can be used in unmanned aerial vehicles (UAV) or even UCAV unmanned combat aircraft in the future.
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