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{{WIP}}
{{Infobox weapon
 
|is_missile=yes
{{infobox weapon
|name=YDG-64
| name               = YDG-64
|image=File:171015-N-N0901-002_(37493186630).jpg
| image             =  
|caption=YDG-64 launched from the frigate ''Yuyang''.
| caption           =  
|origin= [[Dayashina]], [[Menghe]]
| origin             = {{flag|Menghe}}
|type=Medium-range {{wp|surface-to-air missile}}
| type               = {{wp|surface-to-air missile}}
|used_by=Menghe
<!-- Type selection -->
|manufacturer=[[Samsan Group|Samsan Defense]]
| is_ranged          =  
|unit_cost= [[Menghean Won|₩]]26.8 million ($1.2 million OSD)
| is_bladed          =  
|propellant=
| is_explosive      =  
|production_date=2009-present
| is_artillery      =
|number=
| is_vehicle        =
|service=2010
| is_missile        = yes
|engine={{wp|solid propellant|solid fuel rocket}}
| is_UK              =  
|engine_power=
<!-- Service history -->
|weight=280 kg
| service           = 2009-present
|length=3.66 m
| used_by            = {{flag|Menghe}}
|height=
| wars              =
|diameter=254 mm
<!-- Production history -->
|wingspan=
| designer          = Chŏnggong design bureau
|speed= Mach 4+
| design_date        =
|vehicle_range= 50km+
| manufacturer      =
|ceiling=
| unit_cost          =
|altitude=
| production_date    = 2009-present
|filling=39 kg {{wp|blast-Fragmentation (weaponry)|fragmentation}}
| number            =
|guidance={{wp|semi-active radar homing}} with {{wp|mid-course update}} {{wp|datalink}}
| variants          =
|detonation={{wp|Proximity fuze}}
<!-- General specifications -->
|launch_platform=Naval:<br>* Mk 29 box launcher<br> * Mk 41 {{wp|Vertical launching system|VLS}}<br> * Yongorŭm VLS<br>Land:<br>* [[Changgung air defense system]]<br>* [[Chŏlgung air defense system]]
| spec_label        =  
| weight             = 320 kg
| length             = 3.72 m  
| part_length        =
| width              =
| height             =
| diameter           = 254 mm
| crew              =
| passengers        =
<!-- Ranged weapon specifications -->
| cartridge          =
| cartridge_weight  =  
| caliber            =  
| barrels            =  
| action            =
| rate              =
| velocity          =
| range              =
| max_range          =
| feed              =
| sights            =
<!-- Artillery specifications -->
| breech            =
| recoil            =
| carriage          =
| elevation          =
| traverse          =
<!-- Bladed weapon specifications -->
| blade_type        =
| hilt_type          =  
| sheath_type        =
| head_type          =
| haft_type          =  
<!-- Explosive specifications -->  
| filling            =
| filling_weight    =
| detonation        =
| yield              =
<!-- Vehicle/missile specifications -->
| armour            =
| primary_armament    =
| secondary_armament  =
| engine            =
| engine_power      =
| pw_ratio          =
| transmission      =
| payload_capacity  =
| suspension        =
| clearance          =
| fuel_capacity      =
| vehicle_range      = 44km
| speed              = 1,440 m/s (Mach 4.2)
| guidance          = {{wp|Semi-active_radar_homing|SARH}}
| steering          = aerodynamic surfaces
<!-- Missiles only -->
| wingspan          =
| propellant        = solid fuel
| ceiling            =
| altitude          = 2 to 20,000 meters (claimed)
| depth              =
| boost              =
| accuracy          =
| launch_platform    = JYDG-64BGR<br/>GYDG-64BGR<br/>[[Insŏng-class destroyer]]<br/>[[Jŏngdŏk-class frigate]]
| transport          =
}}
}}


The '''YDG-64''' ([[Menghean language|Menghean]]: 유대공-64 ''Yudaegong-64'', abbr. for 유도탄, 대공 ''Yudotan, Daegong'' "Missile, Anti-Air") is a type of {{wp|surface-to-air missile}} developed in [[Menghe]] during the late 2000s. It first entered service in 2009. With a body diameter of 254 millimeters, it is very compact, and can be quadpacked into Menghean {{wp|Vertical_launching_system|VLS}} cells. In spite of this size, it also possesses an impressive maximum range of 44 kilometers.
The '''YDG-64''' ([[Menghean language|Menghean]]: 유대공-64 ''Yudaegong-64'', abbr. for 유도탄, 대공 ''Yudotan, Daegong'' "Missile, Anti-Air") is Menghe's designation for a license-produced version of the [[Dayashina|Dayashinese]] {{wp|RIM-162 ESSM}}. Menghe obtained the production license in 2009, and the first Menghean production missile was first test-fired in 2010. In addition to using the YDG-64 aboard warships, Menghe has also developed it into a major land-based air defense system, part of the [[Changgung air defense system|Changgung]] and [[Chŏlgung air defense system|Chŏlgung]] air defense systems.
 
==Development==
During the early 2000s, representatives of the [[Menhgean Navy]] expressed interest in obtaining a production license for the RIM-162 surface-to-air missile, operated by naval forces of [[New Oyashima]]. Negotiations proceeded through 2003 and 2004, but came to a halt in 2005 after Menghe's support for Ummayah in the [[Ummayan Civil War]]. Concerned about a worsening of the two countries' relations, the Organized States blocked the sale, as it was the main developerof the RIM-162 missile.
 
Little was heard about the program until 2009, when the Menghean Navy tested a new surface-to-air missile system near Chŏlsŏng, later accepting it for service as the YDG-64. The Menghean government and the Chŏnggong design bureau maintain that the YDG-64 is an entirely indigenous design "drawing conceptual influences from the RIM-162," but the OS and Oyashimese governments have accused Menghe of copying the missile based on information obtained from a hacking operation in 2007.  


==Description==
==Description==
In all configurations, the YDG-64 missile uses {{wp|Semi-active_radar_homing|semi-active radar homing}} as its terminal guidance system, though in the approach to the target it relies on {{wp|Command_guidance|mid-course updates}} from the launch platform. It carries a 40-kilogram pre-fragmented warhead to destroy the target, which is armed by a proximity fuse.
In Dayashina, the ESSM was developed from the {{wp|RIM-7 Sea Sparrow}}, and was designed for greater accuracy and range with vertical launch capability. Menghe expressed interest in the system as it was under development, and in 2009 the two countries reached a joint agreement under which [[Samsan Group|Samsan Defense]] would produce missiles under license in Menghe. As such, the YDG-64 is effectively identical to the RIM-162 Block 1, though it has seen the incorporation of some domestic components over the years.


The missile itself can be recognized by long {{wp|Strake_(aeronautics)|strakes}} running along the fuselage, with four moving control surfaces at the rear. It steers using a {{wp|Skid-to-turn|skid-to-turn}} system. Compared to the OSN's RIM-162, it is slightly longer, but has a somewhat reduced range, apparently due to the use of heavier seeker components or a less efficient propellant. The seeker head itself is also wider, without the narrowed "shoulders" of the RIM-162.
The YDG-64 employs {{wp|semi-active radar homing}} guidance, with a passive seeker following the reflected signal from a target illuminated by a separate radar. An active-radar variant is reportedly under development but not yet in service. This SARH guidance is combined with {{wp|radio command guidance}} during the first half of the flight path, with the missile following mid-course updates transmitted from the launch platform. This initial command stage can be used to set up an overhead diving trajectory against sea-skimming anti-ship missiles, to improve the likelihood of successful interception, or to set up a head-on trajectory against rockets and short-range ballistic missiles, improving the likelihood of an interception which destroys the target's warhead.


It reportedly has a maximum range of 44 kilometers and a maximum ceiling of 20 kilometers, slightly worse than the original RIM-162. Minimum altitude of target engagement is claimed as "2 meters or less" for the naval version, but is believed to be higher for land-launched missiles; both are unable to engage targets beyond obstacles or beyond the horizon. In both cases, minimum range is approximately 2 kilometers.
As long as the target is illuminated by the guidance radar, the YDG-64 can also be employed as a backup {{wp|anti-ship missile}}, when other anti-ship weapons are not available. Its high speed presents the target with a limited reaction time, but its warhead, only 39 kilograms, limits its effectiveness in the anti-ship role.
 
{| class="wikitable"
|+ Approximate kill probabilities for possible targets (claimed)
! Target type
! Single-missile kill probability
! Two-missile kill probability
|-
| Non-maneuvering (transport) aircraft
| 95%
| 99.75%
|-
| Maneuverable aircraft
| 90%
| 99%
|-
| Subsonic cruise missiles
| 80%
| 96%
|-
| Tactical ballistic missiles
| 65%
| 88%
|-
| Supersonic cruise missiles
| 60%
| 84%
|-
| Stationary helicopters
| 40%
| 64%
|}


==Naval systems==
==Naval systems==
In naval service, the YDG-64 missile benefits from its compact size, which allows it to be quadpacked in the [[Menghean Navy]]'s {{wp|Vertical_launching_system|VLS}} cells. These cells are 700 mm per side, leaving 350mm per quadpacked box, including wall material. The "self-defense configuration" of VLS cells for the YDG-64 is 5.49 meters deep, though the cells themselves are 4.41 meters deep, with the remaining space used for hot-launch exhaust ducting.


Owing to its moderate range, the naval YDG-64 is mainly used as a self-defense weapon for large and medium-size warships, and has only limited capabilities as an area-defense weapon for a {{wp|Carrier_battle_group|carrier battle group}}.


The naval YDG-64 is usually guided by the YR-35 radar guidance module. Each module is 1.98 meters tall and 1.25 meters wide, and can rotate over a 360-degree arc, though its field of view is usually limited by the ship's superstructure. The module contains an AESA radar antenna which is capable of guiding eight missiles toward four targets. The guidance module also features an electro-optical targeting system, which is unable to perform missile guidance but can provide course-correction information and improve the tracking of small-RCS targets.
The naval YDG-64 is usually guided by the YR-35 radar guidance module. Each module is 1.98 meters tall and 1.25 meters wide, and can rotate over a 360-degree arc, though its field of view is usually limited by the ship's superstructure. The module contains an AESA radar antenna which is capable of guiding eight missiles toward four targets. The guidance module also features an electro-optical targeting system, which is unable to perform missile guidance but can provide course-correction information and improve the tracking of small-RCS targets.
Against sea-skimming anti-ship missiles, the YDG-64 can be programmed to follow a top-attack trajectory, climbing above the surface of the water and then approaching the threat at a descending angle. This trajectory reduces the likelihood of false fuse detonation from contact with the ocean's surface, and allows the missile to engage sea-skimming missiles flying at altitudes of as little as two meters. It can also be fired against large, high-contrast surface targets, such as warships displacing some 100 tonnes or above, in an emergency situation where the launch warship does not have other anti-ship weapons at its disposal.


==Land systems==
==Land systems==
In the [[Menghean Army]], the YDG-64 is mainly used as a {{wp|Division_(military)|divisional}} air-defense weapon, or for the protection of high-value targets such as large unit headquarters. It complements the [[YDG-62]] at the {{wp|Corps|corps}} level. In addition to fixed-wing aircraft and helicopters, the YDG-64 is also capable of engaging cruise missiles, guided bombs, and other large air-to-ground precision-guided munitions, which might otherwise be delivered from outside its effective range.
In the [[Menghean Army]], the YDG-64 is mainly used as a {{wp|Division_(military)|divisional}} air-defense weapon, or for the protection of high-value targets such as large unit headquarters. It complements the [[YDG-62]] at the {{wp|corps}} level. In addition to fixed-wing aircraft and helicopters, the YDG-64 is also capable of engaging cruise missiles, guided bombs, short-range ballistic missiles, and other large air-to-ground precision-guided munitions, which might be delivered from outside its effective range.
{{WIP}}


===JYDG-64===
===JYDG-64===

Revision as of 15:53, 13 January 2020

YDG-64
171015-N-N0901-002 (37493186630).jpg
YDG-64 launched from the frigate Yuyang.
TypeMedium-range surface-to-air missile
Place of originDayashina, Menghe
Service history
In service2010
Used byMenghe
Production history
ManufacturerSamsan Defense
Unit cost₩26.8 million ($1.2 million OSD)
Produced2009-present
Specifications
Weight280 kg
Length3.66 m
Diameter254 mm
Warhead39 kg fragmentation
Detonation
mechanism
Proximity fuze
Enginesolid fuel rocket
Operational
range
50km+
SpeedMach 4+
Guidance
system
semi-active radar homing with mid-course update datalink
Launch
platform
Naval:
* Mk 29 box launcher
* Mk 41 VLS
* Yongorŭm VLS
Land:
* Changgung air defense system
* Chŏlgung air defense system

The YDG-64 (Menghean: 유대공-64 Yudaegong-64, abbr. for 유도탄, 대공 Yudotan, Daegong "Missile, Anti-Air") is Menghe's designation for a license-produced version of the Dayashinese RIM-162 ESSM. Menghe obtained the production license in 2009, and the first Menghean production missile was first test-fired in 2010. In addition to using the YDG-64 aboard warships, Menghe has also developed it into a major land-based air defense system, part of the Changgung and Chŏlgung air defense systems.

Description

In Dayashina, the ESSM was developed from the RIM-7 Sea Sparrow, and was designed for greater accuracy and range with vertical launch capability. Menghe expressed interest in the system as it was under development, and in 2009 the two countries reached a joint agreement under which Samsan Defense would produce missiles under license in Menghe. As such, the YDG-64 is effectively identical to the RIM-162 Block 1, though it has seen the incorporation of some domestic components over the years.

The YDG-64 employs semi-active radar homing guidance, with a passive seeker following the reflected signal from a target illuminated by a separate radar. An active-radar variant is reportedly under development but not yet in service. This SARH guidance is combined with radio command guidance during the first half of the flight path, with the missile following mid-course updates transmitted from the launch platform. This initial command stage can be used to set up an overhead diving trajectory against sea-skimming anti-ship missiles, to improve the likelihood of successful interception, or to set up a head-on trajectory against rockets and short-range ballistic missiles, improving the likelihood of an interception which destroys the target's warhead.

As long as the target is illuminated by the guidance radar, the YDG-64 can also be employed as a backup anti-ship missile, when other anti-ship weapons are not available. Its high speed presents the target with a limited reaction time, but its warhead, only 39 kilograms, limits its effectiveness in the anti-ship role.

Naval systems

The naval YDG-64 is usually guided by the YR-35 radar guidance module. Each module is 1.98 meters tall and 1.25 meters wide, and can rotate over a 360-degree arc, though its field of view is usually limited by the ship's superstructure. The module contains an AESA radar antenna which is capable of guiding eight missiles toward four targets. The guidance module also features an electro-optical targeting system, which is unable to perform missile guidance but can provide course-correction information and improve the tracking of small-RCS targets.

Land systems

In the Menghean Army, the YDG-64 is mainly used as a divisional air-defense weapon, or for the protection of high-value targets such as large unit headquarters. It complements the YDG-62 at the corps level. In addition to fixed-wing aircraft and helicopters, the YDG-64 is also capable of engaging cruise missiles, guided bombs, short-range ballistic missiles, and other large air-to-ground precision-guided munitions, which might be delivered from outside its effective range.

JYDG-64

The most common launch system for the missile is the JYDG-64 (Jayudaegong-64, abbr. for 자주식 유도탄, 대공, "Self-propelled missile, anti-air"). The launch vehicle (JYDG-64BGR) is a tracked, armored TELAR using the same chassis as the JYDG-62 and JJP-152/48. It has a crew of three, and is capable of autonomously detecting and engaging targets, though for maximum efficiency it is usually paired with an air-search radar at the battery level, with additional search radars at the battalion level.

Like the naval variant, it is capable of engaging four targets at once, but can direct as many as eight missiles (two per target), improving kill probability against small or maneuverable targets. It also shares an electro-optical targeting camera on the right cheek of the radar unit, to improve tracking capabilities in a high-jamming environment. It can be brought into action from a road march in as little as four minutes, and returned to a road march in the same amount of time. Once in a ready position, it has a reaction time of 8 seconds from target detection to missile launch.

Each TELAR carries a total of twelve YDG-64 missiles when fully loaded, fully four times the number carried by its divisional air defense predecessor, the JYDG-37BGR. This, too, reflects an interest in engaging precision-guided munitions as well as aircraft, thus increasing the number of targets that must be engaged. Missiles are transported in three containers of four missiles each, based on the quadpacked naval vertical launch system. The launcher fires missiles in such an order as to exhaust the missile boxes one by one; in between firings, empty missile boxes can be offloaded by a separate transloader vehicle and replaced with new units.

The main transloader vehicle, designated JYDG-64BJCh, shares the same tracked chassis but has a loading crane mounted in place of the radar. The crane is also fixed directly to the roof of the vehicle, while the rotating launch assembly is shortened to leave room. For further resistance to mass PGM attacks, the transloader itself can also serve as a TEL, firing missiles at targets illuminated by a nearby TELAR vehicle. Additional reloads are carried on 8x8 wheeled trucks, each with six four-missile launch cells, but with reduced off-road mobility and no on-board loading crane (the transloader's crane would be used instead).

In addition to standard VHF antennas, vehicles in a JYDG-64 battery are also equipped with microwave-band datalinks. Highly resistant to jamming, spoofing, and signal interception at the ranges at which enemy aircraft might be found, these antennas allow vehicles in a launch battery to share high-quality targeting information as long as they remain within line-of-sight of one another. These antennas can also relay information between vehicles, or via separate deployable relay stations, if the launch battery is dispersed in rough terrain. Among their supporting equipment, JYDG-64 batteries also include free-space optical laser communication devices and relays, which can be used to establish communications with the battalion command post and battalion-level radars when fighting in a prepared position.

A full launch battery consists of:

  • 1x JYDG-64JS (Jungdae Salyŏngcha), Company/battery command vehicle, Crew of six
  • 3x JYDG-64BG (Balsagi/Radar), TELAR, Crew of three
  • 3x JYDG-64BJCh (Balsagi/Jaejangjŏn-Cha), TEL and reload vehicle, Crew of three

with additional self-proelled search radars, maintenance trucks, and training facilities at the Battalion level.

GYDG-64

The GYDG-64 is a lighter launch system for the YDG-64 missile, with greater road speed and strategic mobility. All vehicles in a missile battery use the Taekchŏn T212 8x8 wheeled chassis. Missile loads are somewhat lighter, with two four-missile cells on each TELAR vehicle and on each transloader. Guidance and networking capability are otherwise identical between the two systems, and they use the same missile-transport trucks capable of carrying six reload cells each.

GYDG-64 batteries take somewhat longer to come in and out of action, as the individual vehicles must be propped up on hydraulic jacks to provide better stability. They also have less offroad mobility, especially on rough or muddy terrain. This makes the system preferable for defending rear-area targets, including large-unit headquarters, airbases, and cities. Menghe's Coastal Defense Forces also use this variant for divisional air defense, as they must cover a considerably wider area but benefit from Menghe's developed transportation infrastructure in coastal areas.

See also

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