The Exocet () is a French-built anti-ship missile whose various versions can be launched from surface vessels, submarines, helicopters and fixed-wing aircraft.
Etymology
The missile's name was given by M. Guillot, then the technical director at Nord Aviation. It is the French word for flying fish, from the Latin exocoetus, a transliteration of the Greek name for the fish that sometimes flew into a boat: (exōkoitos), literally "lying down outside (, ), sleeping outside".
Description
The Exocet is built by MBDA, a European missile company. Development began in 1967 by Nord as a ship-launched weapon named the MM38. A few years later, Aerospatiale and Nord merged. The basic body design was based on the Nord AS-30 air-to-ground tactical missile. The sea-launched MM38 entered service in 1975, whilst the air-launched AM39 Exocet began development in 1974 and entered service with the French Navy five years later in 1979.
The relatively compact missile is designed for attacking small- to medium-size warships (e.g., frigates, corvettes, and destroyers), although multiple hits are effective against larger vessels, such as aircraft carriers. It is guided inertially in mid-flight and turns on active radar homing late in its flight to find and hit its target. As a countermeasure against air defence around the target, it maintains a very low altitude while inbound, staying just one to two meters above the sea surface. Due to the effect of the radar horizon, this means that the target may not detect an incoming attack until the missile is only from impact. This leaves little time for reaction and stimulated the design of close-in weapon systems (CIWS).
Its solid propellant rocket motor gives the Exocet a maximum range of . It was replaced on the Block 3 MM40 ship-launched version of the missile with a solid-propellant booster and a turbojet sustainer engine which extends the range of the missile to more than . The submarine-launched version places the missile inside a launch capsule.
Replacement Future Cruise/Anti-Ship Weapon is under development.
Versions
The Exocet has been manufactured in versions including: MM38 (surface-launched) – deployed on warships. Range: 42 km. No longer produced. A coast defence version known as "Excalibur" was developed in the United Kingdom and deployed in Gibraltar from 1985 to 1997. AM38 (helicopter-launched – tested only) AM39 (air-launched) – B2 Mod 2: deployed on 14 types of aircraft (combat jets, maritime patrol aircraft, helicopters). Range between 50 and 70 km, depending on the altitude and the speed of the launch aircraft. SM39 (submarine-launched) – B2 Mod 2: deployed on submarines. The missile is housed inside a watertight launched capsule (véhicule Sous marin, VSM), which is fired from the submarine's torpedo tubes. On leaving the water, the capsule is ejected and the missile's motor is ignited. It then behaves like an MM40. The missile will be fired at depth, which makes it particularly suitable for discreet submarine operations. MM40 (surface-launched) – Block 1, Block 2 and Block 3: deployed on warships and in coastal batteries. Range: 72 km for the Block 2, in excess of 200 km for the Block 3.
MM40 Block 3
In February 2004, the Direction Générale pour l'Armement (DGA) notified MBDA of a contract for the design and production of a new missile, the MM40 Block 3. It has an improved range, in excess of through the use of a turbojet engine, and includes four air intakes to provide continuous airflow to the power plant during high-G manoeuvres.
The Block 3 missile accepts GPS guidance system waypoint commands, which allow it to attack naval targets from different angles and to strike land targets, giving it a marginal role as a land-attack missile. The Block 3 Exocet is lighter than the previous MM40 Block 2 Exocet.
45 Block 3 Exocets were ordered by the French Navy in December 2008 for its ships which were carrying Block 2 missiles, namely Horizon-class and Aquitaine-class frigates. From 2021, the Block 3 upgrade was also being extended to three of the La Fayette-class frigates selected for life extension refits. These are not to be new productions but the conversion of older Block 2 missiles to the Block 3 standard. An MM40 Block 3 last qualification firing took place on the Île du Levant test range on 25 April 2007 and series manufacturing began in October 2008. The first firing of the Block 3 from a warship took place on 18 March 2010, from the French Navy air defence frigate . In 2012, a new motor, designed and manufactured in Brazil by the Avibras company in collaboration with MBDA, was tested on an MM40 missile of the Brazilian Navy.