The "positives" are as follows:
- The Erxy warhead is highly effective against all current armour threats, as well as fortified structures.
- The ability to fire from enclosed spaces due to minimal back-blast (2-stage motor with soft initial "boost launch) is particularly useful for defensive (and limited offensive) operations in urban terrain.
- The system tends to be quite robust and reliable, assuming that the firing post has not been unduly smashed about and the missiles have not been too roughly handled once removed from their transit packaging.
- The Mirabel Thermal sight offers a decent thermal surveillance and target-acquisition capability down to Section level in the absence of thermal crew-served weapon sights. The range is limited by resolution (intended for 600m identification of AFVs), but it works pretty well.
- Reasonably quick reload with a trained crew. A good crew should be able to fire 3 shots per minute, including the reload, target acquisition and tracking, and time of flight to impact.
The "negatives"are:
- 600 metre maximum range. This means that the bulk of a current Canadian Rifle Coy's integral dismounted anti-armour capability is limited to employment in "ambush" style defence. For tank-hunting teams, this means siting on a blind corner in close terrain (eg. a defile or forest track) with a maximum 600 metre linear killzone. For area defence with an integrated anti-armour framework, this means that the Erxy must be sited on a reverse slope with a maximum 600 metre kill-zone. Ideally, the Eryx will be sited on the flanks of the KZ to fire from enfilade with interlocking arcs. In that case, given perfect terrain with no obstructions you can cover a KZ approximately 1000 metres wide. If you must site Eryx at the base of the KZ and take frontal shots, the Eryx must be within 600 metres of the crest of the reverse slope (eg. able to engage anything that peeks over the top). If enemy armour can see and engage you beyond the 600 metre max range of the weapon you are done-for. The limited range creates problems for area defence KZ siting and management, due to the limited potential 1000 metre wide x 600 metre deep size of the KZ (even in ideal terrain). Figure that your medium-density tactical minefield will be 300 metres deep across the base of your KZ to assist with the "fix" of the enemy, and that leaves you only 300 metres to the crest of the reverse slope for the enemy to pile up in so that you can destroy him.
- Optically sighted with wire-guidance. The target has to be continually tracked by the gunner for the duration of the missile's flight. If the gunner is suppressed by enemy fire or otherwise fails to keep the target within the reticle, the missile will miss. Obstacles within the flight-path (heavy brush), fencing, etc, can disrupt the missile flight and/or break the guidance wires. The wires themselves exert a considerable "pull" on the firing post once the missile is in flight, making it quite difficult to fire from the kneeling or standing unsupported positions.
- Very bulky and heavy missiles, particularly when in the transit packaging. Remove the protective packaging, and you run the risk of damaging the missile before you can fire it. The transit packaging itself produces a huge amount of garbage. Due to their bulk and weight there is a very limited capacity to transport Erxy missiles during dismounted operations (eg. raid, hasty attack break-in and fight-through, etc), airmobile and airborne ops. Erxy is poorly suited to dismounted carriage except for very short distances with a limited ammo load of 1 or 2 missiles.
- The Firing Post batteries are a unique item, meaning that they aren't necessarily supported by coalition supply chains. This was a significant issue during Op APOLLO, where the Mirabelle thermal sights were required to support the STA framework during airfield defensive operations.
There are undoubtedly other considerations applicable to the Eryx, but those are the key "pro's and con's" off the top of my head. There is talk of increasing the missile range to 1000 metres with future ammo purchases, which would be a very welcome interim capability enhancement until such time as ALAWS enters service.
The Advanced Light Anti-Armour Weapon System (ALAWS) Project is well on-track, with trials ongoing. As best I can recall from the last DLR update, we are looking at selection of a system early next year, with procurement to follow fairly quickly afterwards. The 2 primary contenders are the U.S. Javelin, and the Israeli Spike Long-Range. Both are equally impressive "fire and forget" systems capable of defeating any known enemy armour threat at impressive stand-off ranges. I will defer to an Anti-Armour SME for the full specs, as I don't have them at my fingertips. Suffice it to say that either system would represent a quantum improvement to our integral sub-unit (and now unit-level) anti-armour capability.
I hope this answers a few of your questions. All of the above info is off the top of my head, so if I've missed something or made a mistake, anyone with the requisite info should jump right in with a correction or elaboration. I'm not Basic or Advanced A-Armour trained, so all I know are basic capabilities/limitations and tactical employment techniques....