The British Military Open Encyclopedia - ARRSE-Pedia. Back to British Army Rumour Service Home

Javelin

From ARRSEpedia
Jump to: navigation, search

Obsolete AA Missle

An outdated portable Anti-Aircraft missile system used for Vital Point and Route Protection by The Royal Artillery. This system is no longer in service, and within the British Army the 'Javelin' designation is given to the Anti-Tank system. See also JAVELIN.

AT Missle

A portable Anti-Tank missile system. The FGM-148 Javelin is a fire and forget, man portable, medium range anti tank weapon (MRATGW). It is capable of defeating any current and projected enemy armour, and hovering helicopters. The Javelin has an integrated day and night sight that allows tactical operations during day, night and limited visibility conditions. Javelin has a maximum effective range of 2500m and its primary roll is anti tank; however it can be employed effectively against buildings, bunkers, or with the use of the Command Launch Unit in the observation and vectoring rolls. It has been used effectively over and above it's documented 2500m maximum range.

GENERAL

The Javelin system consists of the Command Launch Unit (CLU) and the round. The CLU, with a weight of 7.89kg (with battery), incorporates a passive target acquisition and fire control unit with an integrated day sight and a thermal imaging sight (NVS).

The gunner's controls for the missile system are on the CLU, primarily using two handgrip features. The day sight is equipped with x4 and x10 (with Day Sight Extender - DSE) magnification, and the night sight (NVS) with x4 and x12 magnification optics. Once a target is located and confirmed and the Seeker engaged, the system will go into Seeker mode, giving x9 magnification for Lock-On (Seeker Mode).

When first trialed by the British Army, it was noted that a tripod would benefit the utilisation of the system. As a result, the British Javelin AT weapon comes with a Tripod, ensuring a more stable and accurate firing position. The tripod is fully adjustable, allowing it's use in most firing positions, including in sub-surface Observation Posts.

"Javelin is autonomously guided to the target, leaving the gunner free to reposition or reload immediately."

MISSILE

The round consists of the Javelin missile and the Launch Tube Assembly (LTA). The range of the missile is 2,500m. Javelin is a fire-and-forget missile with lock-on before launch and automatic self-guidance once fired. Once fired, the missile cannot be disengaged from the target it has been locked to.

The missile is equipped with an imaging infrared seeker which is based on a cadmium mercury telluride (CdHgTe) 64 x 64 staring focal plane array in the 8 to 12 micron waveband.

The tandem warhead is fitted with two shaped charges: a pre-cursor warhead to initiate explosive reactive armour, and a main warhead to penetrate base armour. The propulsion system is a two-stage solid propellant design which provides a minimum smoke soft launch.

OPERATION

The system is deployed and ready to fire in less than 30 seconds and the reload time is less than 20 seconds. The missile is mounted on the CLU and the gunner engages the target using the sight on the CLU, by placing a curser box over the image of the target. The gunner locks on the automatic target tracker in the missile by sending a lock-on-before-launch command to the missile. When the system is locked-on, the missile is ready to fire and the gunner does not carry out post launch tracking or missile guidance.

Unlike conventional wire guided, fibre-optic cable guided, or laser beam riding missiles, Javelin is autonomously guided to the target after launch, leaving the gunner free to reposition or reload immediately after launch.

A soft launch ejects the missile from the launch tube to give a low-recoil shoulder launch. The soft launch enables firing from inside buildings or covered positions. Once the missile is clear, the larger propellant in the second stage is ignited and the missile is propelled towards the target. The weapon has two attack modes, direct or top attack.

The gunner selects direct attack mode to engage covered targets, bunkers, buildings and helicopters. The top attack mode is selected against tanks, in which case the Javelin climbs above and strikes down on the target to penetrate the roof of the tank where there is the least armour protection. The missile is launched at an 18° elevation angle to reach a peak altitude of 150m in top attack mode and 50m in direct fire mode.

TRAINING AIDS

The British Army utilise 3 main types of training aid, as well as Live Firing, to ensure the ongoing high level of weapon handling required from Javelin Operators.

These are;

Live Firing – Although this is the best type of training available to Javelin Operators, it is also expensive. Each missile fired costs the British taxpayer £68,000, and so live firing is a rare and much anticipated experience.

Indoor Trainer (IDT) – This is an inexpensive alternative to live firing. The Indoor Trainer consists of a modified CLU and LTA. The CLU is linked to a desktop computer by a wired connection. The IDT is invaluable as a training aid as it is readily available to Javelin Operators and it is on this system that gunners will gain their Javelin weapon handling and engagement skills. The bi-annual ‘Gunner Tests’ are carried out on the IDT.

JAVWES – The JAVWES stands for ‘Javelin Weapon Effect Simulator’. It is an optimized training system for all aspects of field training. The live weapon CLU is integrated and forces gunners to perform correct lockon-before-launch fire-and-forget procedures, thus gaining increased survivability and probability of hits in real combat. The JAVWES gives gunners experience in handling miss and hang-fires. Weapons signatures are simulated either by the use of pyrotechnics or the integrated loudspeaker.

DRILL ROUND – The Drill Round is a replica of the live LTA tube filled with concrete to simulate the weight and size, and used for day to day training.

Images and media can be found here: [1]

Pointy Stick

A pointy stick thrown (unguided) from some distance (50yrds) at blokes in an attempt to puncture them. Warhead is simple AP employing kinetic energy. Favored weapon in classical times up till early Roman when a curved stick with a string attached (which could launch small pointed sticks 3 times the distance) became more popular. Modern use no longer emphasises accuracy since limited to athletics (sporting competition based only on distance thrown) and chavs (improvised throwing weapon only for posing purposes).