Controls on the third deck retracted these manifolds, exposing a vent that led directly into the core. The manifolds into the cores were suspended above the second deck. Side passages allowed for movement from the bottom deck all the way up to the catwalks on the third.
Pillar of Autumn's engine room was a large, three-deck high chamber allowing access to the fusion engine core. Two of these cannons were later salvaged by the surviving humans on Installation 04 and were used to defend Alpha Base. Three ship-launched HAVOK Tactical Nuclear Warheads.ġ8 M910 Point-defense guns with overlapping fields of fire for point defense against single ships. One Shiva-class Nuclear Missile, loaded onto a remote-controlled Longsword interceptor.
#Pillar of autumn mac
With extra power capacitors and power recycling systems, Pillar of Autumn's MAC gun could fire three consecutive shots per charge. The MAC gun fired lighter projectiles compared to most ship grade MACs, but these rounds worked much like Shredder Rounds. Eventually, it was host to a very powerful armament far in excess of the original Halcyon-class ships. Initially the Autumn had just one regular MAC gun and six Archer missile pods.The upgraded Pillar of Autumn received extensive refits, including several to its weapons systems. Once these were destroyed, the reactor began to go critical, resulting in temperatures of over 100,000,000 degrees and a thermonuclear explosion large enough to tear apart a Halo Installation. Pillar of Autumn's reactor was able to be overloaded by explosives, either grenades or rockets, destroying the vulnerable vent cores. This self-regulating and self-cooling power plant was critical in combat since it virtually eliminated a commander's concerns about overheating and slagging a ship's engines. In essence, the amount of excess heat removed by the new system increased as the reactors' output did. However, Pillar of Autumn's upgraded specifications also included an upgraded cooling system, which featured a "laser-induced optical slurry of ions chilled to near-absolute zero," which is far more efficient than the typical method and removed the reliance on expendable chemical temperature-control substances.
Usually, the excess heat was conducted to a chemical agent which would then vent into space. The Autumn's overhauled reactors were an especially severe case of this. Pillar of Autumn was refitted with an improved nuclear fusion engine that supported the two smaller existing reactors around a newer larger one, which were capable of boosting the overall power output by 300% for a short time if needed.įusion reactors generate extreme heat which must be removed in order for them to remain active without overheating. Prior to being refit for the Spartan mission, Pillar of Autumn was equipped with Mark II fusion engines (which supplied only 10% the power of modern reactors). Like other Halcyon ships, Pillar of Autumn was equipped with a honeycombed internal bracing structure that allowed it to function even after sustaining critical levels of damage. It was a cruiser of the Halcyon-class, the third largest in the UNSC Fleet at the time. Pillar of Autumn was roughly 43 years old at the time of its escape from Reach and its later destruction on Installation 04. The ship was launched on December 1, 2510.ĭue to its expensive honeycomb structure, the blueprints of the Halcyon-class were radically altered soon after the Autumn's construction with only the first eleven of fifty possessing it. It was constructed at the Reyes-McLees Shipyards on Mars in 2509 as one of the then-new Halcyon-class cruisers. The Pillar of Autumn was originally designed by Dr. Warship, special operations, makeshift thermonuclear bomb (Modified by ONI and Sinoviet Heavy Machinery)Ģ Boglin Fields Starfire-IV fusion rockets (Primary)Ģ metres (6 ft 7 in) Titanium-A armor plating
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