The Type 730 is a Chinese 30 mm Gatling gun CIWS. It is mounted in an enclosed automatic turret and directed by radar, and electro-optical tracking systems. The maximum rate of fire is from 4200 rd/m to 5800 rd/m, and the effective range is up to 3 km. A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... An 1865 Gatling gun. ... Phalanx CIWS A Close-in weapon system (CIWS) is a naval shipboard weapon system for detecting and destroying incoming anti-ship missiles and enemy aircraft at short range (the threat(s) having penetrated the ships available outer defences). ... This long range radar antenna, known as ALTAIR, is used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on the Kwajalein atoll. ... KM, Km, or km may stand for: Khmer language (ISO 639 alpha-2, km) Kilometre Kinemantra Meditation Knowledge management KM programming language KM Culture, Korean Movie Maker. ...

Origin

The system's primary purpose is defence against anti-ship missiles, and other precision guided weapons. However it can also be employed against fixed/rotary wing aircraft, ships and other small craft, coastal targets, and floating mines. Though externally similar to the Dutch Goalkeeper in appearance, it is thought to operate indigenous radar and optical systems. Another reported source of technology was reported to be the French which had experimented with the same General Electric EX-83 mount under the SAMOS program in the mid 1980s. Photos of the prototype unit under trial apparently shows a Sagem VOLCAN EO director in place of the domestic OFC-3 EO director. Goalkeeper CIWS on a British Invincible-class Goalkeeper is a Dutch close-in weapon system, which defends ships against incoming missiles and ballistic shells. ...

The Chinese are currently developing a new version of the system which will include missiles on the same installation. A land based variant designated LD2000 (LD: Lu Dun, 陆盾, meaning Land Shield) have also been successfully developed, but this land version lacks the electro-optic fire control system of the ship-borne version, instead, the radar is supplemented by a thermal imaging sight. However, the missile armed version was first successfully developed for the land based version as LD-2000 Gai, with six surface-to-air missiles, three on each side of the turret, as it was revealed to public in 2005, but it is not clear the exact type of the missile, some claim that they are TY-90, while others claim they are DK-9, the surface-to-air version of PL-9. Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...

Development

The gun is designed by the 713th (research) institute under the name 'Project 850' and is powered by 2 electric motors. The radar TR47C is a derivative of the EFR-1/LR66 J-band radar (NATO code name: Rice Lamp) by Xi'an Research Institute of Navigation Technology, but it is unclear that if this derivative is developed by the same institution. The OFC (Optical Fire Control)-3 electro-optical fire control system is designed by the Central China Optronic (electro-optical) Research Institute. Xian (Chinese: ; Pinyin: ; Wade-Giles: Hsi-An; Postal System Pinyin: Sian), is the capital of Shaanxi province in China and a sub-provincial city. ...

Radar

The TR47C radar operates in the same way of AN/APY-1/2 radar onboard E-3 Sentry in that the azimuth is scanned mechanically, while the elevation is scanned electronically, incorporating a total of 169 transceivers of phased array technology that enables the radar to pick up the splashes of 30 mm rounds. Like the western CIWS, the information is processed on site, via local computers of the radar and the gun mount, thus providing faster reaction time than the Russian design in which the radar and fire control system are separately located. This long range radar antenna, known as ALTAIR, is used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on the Kwajalein atoll. ... The E-3 Sentry is a military airborne warning and control system (AWACS) aircraft that provides all-weather surveillance, command, control and communications, to the United States, NATO and other air defense forces. ... For the ultrasonic and medical imaging application, see phased array ultrasonics. ...

Electro-optics (optronics)

The OFC-3 system is modular design that is consisted of a laser range finder, a color TV camera, and an IR camera, and the laser range finder can be replaced by a laser designator (for the laser beam riding SAM), the TV camera can be replaced by a night vision camera, and the IR camera can be replaced by a ImIR, at higher cost. Development to incorporate the dual band IR, night vision camera, and the color TV camera is reportedly in progress.

Fire-control system

Like western CIWS, Type 730 CIWS can process all the information on its own, thus offers faster reaction time than the Russian AK-630, but Type 730 CIWS lacks the local manual control such as that on AK-230. Type 730 CIWS is fully compatible with Chinese and European combat data systems such as ZKJ-1, ZKJ-4, ZKJ-4A-3, ZKJ-5, ZKJ-6, ZKJ-7, H/ZBJ-1, and Thomson-CSF TAVITAC, and can be directly integrated with these combat data systems without any modification. A AK-630 installation aboard a Soviet built Tarantul I class missile boat. ... AK-230 gun on ORP Fala patrol craft AK-230 is a Soviet fully automatic naval twin 30 mm gun. ... Thomson-CSF was a major electronics and defense contractor. ...

Range

The system can track a sea-skimming target with 0.1 square metre radar cross section at 8 km, extended to 15 km if the radar cross section is increased to 2 square metres, and further extended to 20 km if the radar cross section is increased to 10 square metres, though the targets could not be engaged until much closer (3 km) due to the limited range of the gun. A square metre (US spelling: square meter) is by definition the area enclosed by a square with sides each 1 metre long. ...

Gun

The 30 mm Gatling gun is extremely similar to the General Electric GAU-8/A Avenger. Although there are sources claiming that it is the Chinese version of the Russian Gryazev-Shipunov GSh-6-30 Gatling gun, this appears to be unlikely, since the Russian Gatling gun only has 6 barrels. Like the American Gatling gun, the Chinese Gatling gun can only last a single minute if fired at the rate of 4,200 rounds per minute, after which the heat generated would melt the rifles of the barrel, ending its useful life. If fired at the rate greater than 4,200 rounds per minutes, the barrels last even shorter. There are two ammunition drums each contains 250 rounds, and other versions of the ammunition drums have been reportedly developed. An 1865 Gatling gun. ... This article is about the American company. ... The GAU-8/A Avenger is a 30 mm, seven-barrel Gatling gun that is mounted on the United States Air Forces A-10 Thunderbolt II. It is the largest (it is the size and weight of a family saloon car (sedan)), heaviest and most powerful aircraft gun in... The Gryazev-Shipunov GSh-6-30 is a Russian 30mm cannon used by Soviet and later CIS military aircraft. ...

Deployment

The system has been fitted onboard the 052B, 052C, 051C destroyers and the new 054A frigate so far, and is expected to replace some Type 76 mounts on older combatants. Although many foreign sources predicted that this CIWS will be standard for all new principal surface combatants, this did not materialize due to the high cost of the system, and smaller new ships such as frigates are equipped with the Russian AK-630 instead. The Type 052B Guangzhou-class is a class of destroyer built by the Peoples Republic of China. ... The Type 052C Lanzhou-class is a class of destroyer built by the Peoples Republic of China. ... The Type 051C destroyer (NATO code name Luzhou class) is the latest air-defense guided missile destroyer built by China in response to creating a true blue water navy. ... The Peoples Liberation Army Navy (PLAN) is the Naval branch of the Peoples Liberation Army (PLA). ... A AK-630 installation aboard a Soviet built Tarantul I class missile boat. ...

External links

• http://www.sinodefence.com/navy/weapon/type730.asp