M9109 ASW/AC MLA: Difference between revisions

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[[Image:UNSC50mmdefenseguns.jpg|thumb|right|A possible 50mm gun on the ''[[UNSC Forward Unto Dawn]]'']]
[[Image:UNSC50mmdefenseguns.jpg|thumb|right|A possible 50mm gun on the ''[[UNSC Forward Unto Dawn]]'']]


A '''Point Defense Gun''' is a [[United Nations Space Command]] starship-mounted weapon that fires 50mm projectiles.
A '''Point-Defense Gun''' is a [[United Nations Space Command]] starship-mounted weapon that fires 50mm High-Explosive<ref>[[Halo:The Flood]], pg 215.</ref> projectiles.


They are used for point-defense, that is to say intercepting nearby enemy starfighters<ref>''[[Halo: The Fall of Reach]]'', page 272</ref> and incoming missiles. They are not used to attack capital ships, and such roles would be fulfilled by other armaments such as [[Archer]] missiles. Because human operators lack the reflexes necessary to operate the weapons, autocannons are computer-controlled. They are comparable to the CIWS weapons in use today.
The 50mm Point-Defence Gun functions much like the [http://www.en.wikipedia.org/wiki/CIWS CIWS] designs created during the 20th Century, firing 50mm projectiles. Unlike [[Archer missiles]] and the [[MAC]] weapon systems mounted on capitol ships, the Point-Defence Guns's are ''not'' used to engage Covenant capitol ships, instead meant to intercept incoming plasma torpedoes and [[Seraph]] fighters<ref>''[[Halo: The Fall of Reach]]'', page 272</ref> to prevent or, at least, lessen the damage inflicted to a warship equipped with these systems.


50mm point defense guns are standard armament for UNSC {{Class|Halcyon|Cruiser}}s and are usually controlled by the ship's [[Artificial Intelligence]]<ref>''[[Halo: The Fall of Reach]]'', page 19</ref>.
Because human operators lack the reflexive responses neccessary to operate the Point Defence Guns to maximum affect, the autocannons are computer controlled and, if an AI is available, control is diverted to it. "Smart" AI's seem better able to operate the Point-Defence Guns than standard computers and even lesser "dumb" AI's.<ref>''[[Halo: The Fall of Reach]]'', page 19</ref>.


On [[Alpha Halo]], the [[ODST]]s that recaptured the ''Pillar of Autumn'' from the [[Covenant]] scavenged 50mm point defense guns from the crashed ''Halycon''-class cruiser and mounted them on [[Pelican]]s for transport to [[Alpha Base]].<ref>''[[Halo: The Flood]]'', page 174</ref>  
During the human occupation of [[Alpha Halo]], the ODST's that recaptured and secured the wreckage of the ''Pillar of Autumn'' from the Covenant managed to scavenge<ref>[[Halo: The Flood]], pg 137.</ref> several two<ref>[[Halo:The Flood]], pg215.</ref> 50mm turrets, using them as anti-air defensive emplacements at [[Alpha Base]]. These were ''not'' fitted to the Pelicans for use, as is speculated by some, but were carried underneath the dropships merely for movement.


== Sources ==  
== Sources ==  
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