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« The S-750 Rhea Surface-Air-Missile system was designed by Russia to defend its airspace against hostile intrusion. The asset was adapted by CSAT based on a joint CSAT/Russian arms syndicate deal. Typically found near high-value assets such as airfields and military bases to protect against long-range aerial threats. Armed with long-range Rhea missiles, and connected to R-750 Cronus radar via data-link, this system is a serious threat to any opponent.
Field Manual
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S-750 Rhea
Arma3-render-rheahex
Faction CSAT
Type Heavy Anti-Aircraft System
Magazine
capacity
4
Variants None
Games
Jets dlc logo

The S-750 Rhea is a heavy anti-aircraft system exclusively used by CSAT forces in ArmA 3. It was added with the release of the Jets DLC.

Overview

The S-750 is an air defence missile system designed to engage all types of aerial targets, ranging from fixed-wing jets to rotary-wing helicopters, as well as Unmanned Aerial Vehicles.

CSAT's direct counterpart to the MIM-145 Defender used by NATO forces, the S-750 largely serves in exactly the same role and purpose. Each launcher contains four radar-guided missiles, can be controlled with a UAV Terminal, and are designed to function in tandem with R-750 Cronus radar sites.

Unlike the ZSU-39 Tigris, the S-750 is seemingly limited by its inability to relocate and serves as a static-only SAM launcher. However, its radar-guided missiles are far superior to that of the smaller, infrared-guided Titans on the ZSU-39.

Arma3-OPREP-Screenshot-26

An S-750 launcher operated by Pacific CSAT forces.

Capable of destroying even the mighty V-44X Blackfish VTOL gunship with one or two direct hits, the S-750 can prevent any incursions by enemy aircraft from breaching a protected airspace.

Furthermore, since the S-750 launcher itself doesn't utilise any sensors (besides data link), it cannot be tracked on enemy radars even when launching a missile. Provided that it's well hidden amongst ground clutter, an S-750 battery will be almost impossible to spot electronically.

This is because the launcher is shared the location of these contacts through R-750 radar sites, which function independently of the S-750 and can be placed at any location; so as long as they remain within data link range of the launcher. If spread out properly, a single S-750 can cover distances of up to 16 km away in all directions.

Naturally, care should always be taken when operating the radar sites, as they will emit radiation that can be easily picked up by passive sensors from standoff ranges. If all R-750s are simultaneously destroyed, the S-750 will be unable to defend itself or those under its protection until a network is re-established.

Camouflage

  • Hex
  • Green Hex
  • Hex (Radar)
  • Green Hex (Radar)

Schemes are applied to both the launch tubes and the transporter erector launcher itself:

  • Hex: Arid Hexacam camouflage pattern. Useful for forested, grass plains, and desert environments.
  • Green Hex: Tropical Hexacam pattern camouflage. This is used in heavily forested and tropic environments.

Sensors

The S-750 by itself does not have access to any sensors aside from the ability to utilise data link. It exclusively relies on other systems in order to acquire enemy aircraft:

Data Link

The S-750 is data link-capable with all sensor-equipped vehicles and aircraft, but is specifically designed to interface with the R-750 Cronus radar. It is able to receive (not transmit) target location information from any site within 16 km range of the S-750's current position.

Note that while the launcher itself is theoretically capable of locking onto targets at an unlimited distance, it is actually limited to a hard range cap of 16 km. Beyond this distance, it will not be capable of locking onto a target even if it can track the target via data link.


Arma3-rhea-sensors

Teal = Active Radar

Active Radar (R-750 Cronus)

The R-750 forms the main component of the S-750 AA system and is what enables the launcher to track and attack targets.

Detection against aircraft is limited to 16 km and only 12 km against ground targets. Horizontal/vertical coverage extends out to an angle of 120 degrees in both directions, but is restricted to where the radar dome is facing.

Targets can be recognised once they are within 12 km range of the R-750. It can only track targets that are moving at speeds of 5,000 km/h or less.

R-750 Cronus: Passive Radar

Its passive sensor has a 360 degree detection radius and a target recognition range of 12 km.

R-750 Cronus: Data Link

The R-750 is data link-capable, and can transmit the locations of radar contacts to all friendly forces within 16 km range.

Missile specifications

Base damage value Proximity fuse radius (metres) Maximum speed (m/s)
400 35 850

Rhea missiles are exclusively radar-guided and rely on other Active Radar-based units to track targets via Data Link. They also retain lock-on after launch (LOAL) capability.

Both the launcher and missile seeker have a lock-on cone of 120 degrees (horizontally and vertically). They have a maximum tracking distance of 16 km which cannot be exceeded even if the battery can "see" beyond that range. The seeker has a 5% chance of losing lock to chaff countermeasures.

Missiles are hard launched with an initial velocity of 45 m/s. It takes 20 seconds for their motors to reach a top speed of 850 m/s in-flight. The warheads are high-explosive (HE) based and have a blast radius of 25 metres.

Rhea missiles only retain enough fuel for 55 seconds of flight time. They will automatically self-destruct if they cannot intercept their target within that duration.

Trivia

  • Both the Rhea's launcher/trailer vehicle appear to be based on components used by the real-world Russian-made "S-400" missile system.
    • The launcher itself is modelled after the S-400's "5P85SE2" launcher, while the trailer is based on the "BAZ-6402" tractor truck's trailer (excluding the truck itself).
    • The Cronus on the other hand is based on the S-400's "92N6A" radar complex.
  • Both "Rhea" and "Cronus" are characters from Greek mythology. They were Titans, a race of deities that preceded the Olympian gods. Cronus and Rhea were children of Uranus and Gaia, and were also husband and wife.
  • The Rhea's TEL and the Cronus radar are included as bonus content added with the Encore update for the Jets DLC. They are not considered as premium objects however, and can be freely used even if the player does not own the DLC.
  • Like NATO's MIM-145 Defender, the Rhea's TEL/Cronus radar cannot be towed by the Tempest as the engine does not support vehicle towing.
  • Alongside the Defender, the Rhea is one of the first two land-based heavy AA systems in the entire series.

Gallery

External links

See also

Heavy AA systems of comparable role and configuration

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