Power system: around the chimney of destroyer 170, you can see the large air filter window unique to gas turbine warships. The main engine is DA/DN80, 1995 made in Ukraine. This is the most advanced mainframe of its kind in the world except WR-2 1 in the United States. The main engine of DA/DN80 is 4.6m long, weighs16t, rotates at 3000-3600rpm, and the maximum power can reach 26680.5kW, with a thermal efficiency of 36.5%. Its performance is quite advanced. The auxiliary engine is China MTU20V956TB90.
Stealth: In 2 1 century, navies all over the world began to pursue stealth requirements in warship design. Because there is no design experience before. 167，onNo。 170, the China navy adopted a further improved method and changed the NO. 167 In appearance, it is the first time to adopt a fully enclosed design, with a curved panel instead of a flat panel. The side wall has a larger inclination angle, and the corners are made of circular surfaces and edges, thus avoiding strong specular reflection. And all kinds of exposed weapons and equipment are also secretly modified as much as possible; For example, the main gun adopts stealth design, the anti-ship missile is equipped with a double-sided baffle, and the air defense missile adopts a vertical launcher, so that the whole mechanism is buried deep inside the hull. For surface ships, infrared radiation has obvious detectable characteristics. Its infrared radiation sources are mainly chimneys, main engine room and its exhaust gas and hot water, lights, thermal radiation on the hull surface, etc. On 170, aiming at the chimney with strong infrared characteristics, many methods were adopted to suppress infrared radiation, such as cold water cooling, heat insulation baffle, coating heat insulation layer, heat insulation pad, and exhaust gas generated by diesel engine being discharged into water through internal pipelines. In the aspect of acoustic stealth, the hull surface of 170 adopts anechoic tile, anechoic coating and efficient five-blade propeller to prevent underwater sonar detection. The combination of the above protective measures makes the stealth ability of 170 outstanding. It is said that the signal on the display screen of the 170 radar with a full displacement of more than 7,000 tons is only equivalent to the size of a ship of several hundred tons.
Weapons and equipment: the 12 anti-torpedo depth charge at the bow, and the FQF-2500/ 12 anti-submarine/anti-torpedo depth charge launcher which was originally considered to have been eliminated appeared on 170. The depth bomb has a range of about 2500 meters and is mainly used for close-range anti-submarine. At present, China Navy still has a large number of ships equipped with this old but practical equipment. However, it is a bit impossible to deal with those high-performance submarines with deep bombs with a range of 2500 meters; Therefore, in terms of use, the outside world thinks that it is more likely to be used to counter incoming torpedoes, which is by no means nonsense, because Russian naval vessels are generally equipped with similar anti-torpedo facilities. Except for the number of bombs, the others are almost the same, such as the overall structure, launcher and system ammunition. Although this system has a simple structure and no guidance and electronic jamming equipment, compared with other commonly used anti-torpedo equipment, it is a drop in the bucket, but it is powerful, fast to launch and dense in firepower, and can form a tight underwater barrier during volley. As long as we cooperate with reliable testing equipment, we can achieve good results.
Naval gun: Single-tube 100mm compact naval gun developed by Creusot Loire Company of France, installed at the rear of 12 anti-torpedo deep-water bomb launcher, which is mainly used for attacking maritime targets and air defense, as well as anti-missile and carrying out offshore bombing missions. The shell adopts stealth design, with an initial velocity of 870 m/s, a barrel length of 5500 mm and a firing rate of 10 ~ 90 rounds/min. For maritime targets, the maximum range is17500m and the effective range is12000m; for air targets, the maximum range is 8000m and the effective range is 6000m; The gun weighs 17000 kg and has the advantages of compact structure, light weight, high firing rate and short reaction time. At a distance of 20000 meters, the probability of a single shot hitting the target can reach 0.7 ~ 0.8. This gun is probably made in China after the French patent was introduced. As early as the mid-1980s, China purchased two sets of this device from France, of which 1 set was installed on the anti-submarine reinforced "Jianghu" class frigate 544. According to the application effect, China Navy was very satisfied with the performance of the gun, and then signed an import production line with France, which provided technical support to further improve the gun to equip newly designed large surface ships. Because 170 will be mainly used to patrol the South China Sea in the future, it can completely complete the combat mission with the advantages of shooting, quick response, high hit accuracy and great power in the face of weak navies in Southeast Asian countries. After all, sometimes the role of shells is greater than that of missiles.
Anti-aircraft missile: As a first-class destroyer, 170 is equipped with the first vertical launch (VLS) air defense system in China. The ship-borne long-range air defense missile is "HHQ-9", which is developed from land-based HQ-9A. The missile is wingless, with a minimum operational altitude of 0.5 km, a maximum operational altitude of 30 km, a minimum operational distance of 6 km, a maximum operational distance of 120 km and a maximum flight speed of over Mach 4.2. The missile has a total length of 6.8m, a diameter of 0.47m, a missile weight of1300kg and a warhead weight of over180kg. The missiles were launched in vertical cold launch mode, divided into six packages, with a total of 48 HHQ-9A missiles. The launcher is similar to the left wheel used by the Russian navy, but the launching system of SA-N-6 uses one launcher for eight missiles, while the launching system of Haihong -9 uses a separate launcher for each missile. Comparatively speaking, the launch mode of Haihong -9 is more reliable, the launch speed is faster and the safety rate is higher. However, because the minimum shooting height of the missile is only 500 meters, it is obviously unable to meet the requirements of the fleet's short-range air defense, so it needs the close cooperation of other ships when performing formation air defense.
Anti-ship missile: Because the design idea of 170 is air defense first, supplemented by anti-submarine, the anti-ship combat capability of this ship is not as good as that of the destroyer newly commissioned and improved by China Navy in recent years (usually equipped with 16 anti-ship missile), but it is also equipped with 8 sets of C-803/ Eagle Strike-12 supersonic anti-ship missile launchers. The missile launcher is also designed to be cylindrical, which is more conducive to the stability, accuracy and guarantee of launch. The C-803 missile continues the aerodynamic layout of the C-802, and its length seems to be longer than the 6.4m of the C-802, with a maximum range of about 250km. It retains the small turbojet engine structure of C-802, and the nose fairing is slightly thinner than the former. It uses a new solid rocket engine with a terminal speed of Mach 2.3, which can carry out difficult hunting and deception maneuvers. In addition, there is an antenna in front of the folding wing to receive the data link, which can be guided by ships, helicopters and even satellites for over-the-horizon attacks. C-803 can be said to be a masterpiece of modern anti-ship missiles, and its excellent performance will surely play a formidable role in future maritime wars/conflicts.
Short-range defense system: The short-range defense system on 170 is a newly developed 7-tube 30 mm Vulcan rapid-fire gun in China, one under the bridge and the other on the upper right of the hangar. From the appearance, the design of the gun draws lessons from the Dutch "goalkeeper" defense system to some extent. The system was developed in the early 1990s. In order to reduce the cost and simplify the logistics, the ready-made barrels of Russian AK-630 are used like the double 37 system, but the number is increased to seven, and the speed reaches 5800 rounds per minute. Its response speed is fast, its reliability is good, its hit accuracy is high, its power is great, and its overall performance exceeds the "dense array" commonly used by navies of various countries at present. The servo system adopts operational amplifier, and the power amplification adopts digital pulse width modulation system. The closed-loop firing control technology is applied for the first time, which can correct the impact deviation and promote the AC system. Unlike the "goalkeeper", this gun has no search radar and lacks the ability to track and scan multiple targets. Its 1/K-band Doppler tracking radar can automatically switch to eliminate image reaction, while the reverse time of ODF-730 spot tracker should be less than 3 seconds, and the measurement accuracy is 0.3m ... The tandem arrangement also enables the two guns to cooperate in emergency and improve the damage probability.