![]() These engines are powered by fusion reactions between atomic nuclei of the hydrogen isotope deuterium. ![]() There are six exhausts visible, two large and four small. Sublight thrust is provided by nuclear fusion reactions which are channeled to two primary and twelve secondary adjacent exhausts at the ship's exterior stern. Because of the low number, these were likely used only as a last resort if Pelicans or other modes of transportation were not available. Halcyon-cruisers were often found with eighteen Class-3 Bumblebee lifeboats, in case the ship's crew must be evacuated. Eight docking bays allowed a number of Pelican dropships, GA-TL1 Longsword Interceptors, M12 Warthogs and M808B Scorpion tanks to be carried. Complement Īrmories were located throughout the ship, holding a selection of small arms and their requisite ammunition. Halcyon-class cruisers were constructed in space and are not rated for atmospheric deployment however, R7 thrust couplings allow them limited atmospheric operation capabilities, as demonstrated by the Pillar of Autumn which was capable of achieving liftoff from Asźod, supported by a series of rocket pods. The corridors served a secondary purpose of lessening the ship's considerable mass, thereby increasing acceleration. If necessary, these expansive corridors, including a Class Seven service corridor running along the dorsal structure of the vessel, could permit passage to Warthogs and some sections were large enough to accept Pelicans. Although normally restricted to personnel, they could be accessed by lifts in main engineering or connecting passageways from the docking bays. ![]() A potential application of this was during a hostile boarding action, where the atmosphere in the sealed sections could be vented via commands from the bridge, asphyxiating enemy troops.Ī number of service corridors ran the length of the ship. In the event of an emergency, these bulkheads could be closed and affected sections sealed from the remainder of the ship. Ĭorridors on the Halcyon-class were segmented by several retractable containment bulkheads. The Pillar of Autumn and 10/50 others were built with this type of superstructure. This led to the design being dropped from future models of Halcyon-class ships. However, the special superstructure was deemed unnecessarily over-massed and costly due to its cross-bracings and interstitial honeycombs. Not only did the Autumn continue its engagement with limited loss of functionality, it destroyed the Covenant vessel after a protracted battle. Having wreaked havoc on Reach's defense fleet, this formidable Covenant warship breached the Autumn's hull with two piercing beam attacks, one of which severely damaged its reactors. Another example of the ship's durability was during the Fall of Reach when the ship took on an immensely powerful Covenant warship. However, while the cruiser was intact, it was damaged beyond repair and could never fly again, although some systems were still online such as the fusion core, engines, and self-destruct. The durability of the design was demonstrated by the UNSC Pillar of Autumn when she survived a crash-landing on Alpha Halo after taking a tremendous beating at Reach and over the ring. This internal superstructure made the ships surprisingly resistant to battle damage ships of the class were able to remain operational despite sustaining breaches to all compartments and losing 90% of their armor. The most noteworthy design feature was a series of internal cross bracings and honeycombs designed by Doctor Robert McLees. Lastly, the MAC cannon is visible as a bump on the bow. There are also slots for eighteen lifepods on the ship's hull. The bridge is slung underneath one of the forward sections and eight docking bays are distributed throughout the ship. Halcyon-class cruisers are composed of five hexagonal and octagonal sections mounted onto each other. 40 M810 Helix point defense guns or M910 Rampart point defense guns ĭesign details Superstructure and hull.4 Mark 33 Spitfire naval coilgun battery. ![]() Titanium-A battle plate resistant to around 5 plasma bolts.
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