Editing MJOLNIR Powered Assault Armor

{{Status|Canon}}

The '''MJOLNIR Powered Assault Armor System'''<ref>[http://www.halowaypoint.com/en-us/intel/armor ''Halo Waypoint -Halo 4 Armor'']</ref> (pronunciation:''ˈmjɔːlnɪər'', ''myol-neer'') is a technologically advanced [[Powered exoskeleton|combat exoskeleton system]] designed to vastly improve the strength, speed, agility, reflexes, and durability of a [[SPARTAN Program|Spartan]] supersoldier. Though the development program is rendered in all capital letters (''i.e.'' Project: MJOLNIR), the armor itself is called '''Mjolnir'''.<ref>''Halo 4: The Essential Visual Guide'', page 229</ref> The suit is named after the [[Wikipedia:Mjölnir|hammer of Thor]] in Norse mythology.

Before Dr. Halsey initiated Project MJOLNIR, the [[UNSC Navy]] had developed various designs and prototypes for powered exoskeletons and armour systems, including the [[Mark I prototype exoskeleton|Mark I exoskeleton]],<ref name="FoR3">'''Halo: The Fall of Reach''', ''page 71'', (2001 edition) ''page 81'', (definitive edition) ''page 90'' (2010 edition)</ref> the [[Mark III exoskeleton]],{{Ref/Book|Id=EVGCyclops|EVG|Pg=44}} [[ORION armor]],{{Ref/Site|Id=CF|URL=https://www.halowaypoint.com/en-us/news/anniversary-armory|Site=Halo Waypoint|Page=Canon Fodder - Anniversary Armory|D=03|M=11|Y=2021}} and [[HRUNTING Mark I exoskeleton|HRUNTING Mark I]].{{Ref/Reuse|journal1}} In [[2510]], Halsey inspected much of this previous work while performing a program review of [[Project HRUNTING]] on behalf of ONI. She judged HRUNTING to be an "interesting failure" for its lack of innovation, and inability to exploit recent technological breakthroughs.{{Ref/Book|Id=Enc22p77|Enc22|Page=77}} Later, during the early stages of planning for Project: MJOLNIR, Halsey would ultimately choose to start from scratch, due to both the limitations inherent in the previous antiquated designs,{{Ref/Reuse|journal1}}{{Ref/Reuse|FoR3}} and an unwillingless to shoulder the administrative burden of taking over and reforming an existing project such as HRUNTING. Instead, Halsey preferred to start fresh with an entirely new team, who were unbound by pre-existing dogma and assumptions about powered exoskeleton design.{{Ref/Reuse|Enc22p77}}

The initial genesis of what would become Project: MJOLNIR can be traced back to as early as [[2511]]. By that year, Halsey was in communication with [[UNSC rank structure|Vice Admiral]] [[Michael Stanforth|Hieronymus Stanforth]] regarding the production of an armour system to complement the SPARTAN-II program, and had begun to brainstorm names for the project. In July, she penned an entry in her [[Dr. Halsey's personal journal|personal journal]] speculating that the [[Wikipedia:Piezoelectricity|reverse piezoelectric effect]] could be used to produce a bodysuit that enhanced the wearer's strength, by causing the suit to intelligently deform in response to the wearer's nerve impulses, adding extra force to their movements. This would become one of the defining features of MJOLNIR armour.{{Ref/Reuse|journal1}}

Work on Project: MJOLNIR would not begin in earnest for a further four years, however, with development beginning in [[2515]].{{Ref/Reuse|ENCY}} In that year, the project opened with a experimental phase, with a development platform that would be retroactively termed "Mark I" being used as a testbed for numerous trials and experiments over the following years.{{Ref/Reuse|Enc22p77}} The armour underwent significant iteration in the decade following, with at two further distinct prototype platforms emerging and forty prototype suits being produced across these three platforms, before the first production model - what would come to be known as Mark IV - was finalised. Mark IV was put into production in mid-[[2525]] and issued to the surviving SPARTAN-II candidates in November of that year.{{Ref/Reuse|FoR2}}{{Ref/Reuse|ENCY}}

Initially, MJOLNIR was envisaged as an evolving platform, constantly and continuously updated with the latest technology as it became available. After a full decade, however, the Office of Naval Intelligence decided that it was no longer possible to facilitate this approach, much to Halsey's chagrin. In [[2535]], they mandated that MJOLNIR adopt a generational categorisation system, for the purposes of serialisation, prioritisation and progress-tracking, and as a means of fiscal oversight. Despite her reservations, Halsey agreed to the introduction of such a system, and produced a roadmap for future generations of the armour, in the hopes that it would "keep the accountants out of [her] hair and [her] work". The system devoted Marks I, II and III to prototype platforms produced between 2515 and 2525, while categorising all production models of MJOLNIR up until that point as Mark IV. Three further planned iterations, Marks V, VI and VII, were included in the roadmap, complete with rough technical specifications.<ref name="journal2">'''Dr. Halsey's personal journal''' ''January 7, 2535''</ref> Nevertheless, Halsey rarely used the "Mark" verbiage to describe the suits, due to her objections with its imposition by ONI.{{Ref/Reuse|Enc22p77}}

First developed in [[2515]], the Mark I was a development platform which served as a testbed for Halsey and her team to experiment with during the early stages of MJOLNIR development. Though bulky, unwieldy and difficult to control, the Mark I nevetherless pioneered the artificial muscles, embedded computer systems and control software that would become core to the MJOLNIR armour in later generations.{{Ref/Reuse|Enc22p77}} The suit also contained a cutting-edge onboard computer that could assist the wearer by transmitting tactical and communications information to the standard neural implant issued to a soldier, though the suit did not possess the ability to carry an AI.{{Ref/Reuse|ENCY}} Despite these successes, the Mark I had one fatal flaw which would have to be overcome before MJOLNIR could ever be truly practical in the field: due to the tremendous amount of energy needed to power it, it had to remain physically tethered to a power source while in use.{{Ref/Reuse|ENCY}}{{Ref/Reuse|Enc22p77}}{{Ref/Note|The 2009 and 2011 editions of the ''Halo Encyclopedia'' also claim that the Mark I allowed the user to lift up to two tons (4,000 pounds) and run at 32&nbsp;km/h (19.88&nbsp;mph) for extended periods of time. However, these statistics were ascribed to the unrelated [[Mark I prototype exoskeleton]] by ''[[Halo: The Fall of Reach]]'', and misattributed to MJOLNIR Mark I by the ''Encyclopedia''. Thus, they are not listed on this article.}}

Research and development for the Mark I was carried out at Section Three's headquarters inside [[CASTLE Base]] on [[Reach]], though the final assembly of components occurred at the [[Damascus Materials Testing Facility]] on [[Chi Ceti IV]]. The Mark I remained in development for a considerable amount of time before being succeeded by Mark II and later generations.{{Ref/Reuse|ENCY}}{{Ref/Note|The 2009 and 2011 editions of the ''Halo Encyclopedia'' state that it took a decade to develop the MJOLNIR Mark I. However, given that development of MJOLNIR only began in 2515, and that Mark IV was submitted to evaluation for mass production in February 2525, this would leave only 2 months for Mark II, III and IV to be produced. Given the implausibility of this, and the fact that the 2009 and 2011 ''Halo Encyclopediae'' are known to be frequently inaccurate, this article chooses to ignore this stated timeframe.}} Numerous Mark I suits were produced in various stages of completion, but as prototypes, they did not see use in battle.{{Ref/Reuse|ENCY}}{{Ref/Reuse|Enc22p77}}{{Ref/NoteReuse|EncFortySuits}}

A successor to Mark I, the Mark II platform was a refinement on the same basic system as the Mark I, which increased the suit's mobility and range.{{Ref/Reuse|Enc22p77}} This greatly improved mobility was enabled by the suit's slimmer profile. The Mark II also included a refractive coating to help disperse heat from explosions or directed energy weapons, and improved self-sealing systems in the event of damage while the unit was in a vacuum or an inhospitable atmosphere. However, the suit still needed to be physically tethered to a fusion generator, so despite being the most powerful piece of military hardware of its time, it was still impractical for battlefield deployment.{{Ref/Reuse|ENCY}}

Similar to the Mark II, the Mark III system was a further refinement on the same systems pioneered with the Mark I, and also featured increased mobility and range versus its predecessors.{{Ref/Reuse|Enc22p77}} Its major innovation, though, was that it was the first iteration to incorporate a wireless power receiver so that power could be transmitted directly to it, via [[broadcast power]]. This eliminated the need for a physical connection to the power source.{{Ref/Reuse|ENCY}}

 

Though an improvement, this design was still quickly rejected, for two main reasons. First, the armor still had a limited operational range as it had to remain within range of a bulky, immobile [[generator]]. Second, if said generator was disabled or destroyed, the suit would become inoperable, leaving its user locked inside the now-inoperable shell, helpless against enemy attacks.{{Ref/Reuse|ENCY}}

MJOLNIR GEN3 is the third generation of Mjolnir armor, incorporating lessons learned from GEN2 line of Mjolnir, while also seeking to restore some of the favorable design characteristics and materials of the GEN1 line.{{Ref/Book|Id=Enc22p85|Enc22|Page=85}} GEN1 Mark VII was used as the testbed for GEN3 improvements and when GEN3 Mjolnir began to be produced in [[2559#February|February 2559]],{{Ref/Reuse|HOSFM}}{{Ref/Generic|Id=DH|[[Discover Hope]]}} Mark VII would for the first time receive a full production run.{{Ref/Site|Id=CFDespite|D=30|M=3|Y=2023|URL=https://www.halowaypoint.com/en-us/news/despite-distance|Site=Halo Waypoint|Page=Canon Fodder - Despite Distance}} GEN3 introduced numerous upgrades when compared to the GEN2 platform, including enhanced energy shielding capabilities, a more compact and efficient fusion reactor, and variable-density hydrostatic gel dispersal membranes. While GEN3 did increase the overall use of exotic composites, several innovations in the manufacturing process and a refinement of the platform's modularity have resulted in a suit of armor that is more cost-effective and versatile than both previous generations.{{Ref/Reuse|Enc22p85}} By [[2559#October|October 2559]], GEN3 Mjolnir armor would become the standard armor generation fielded by Spartans,{{Ref/Novel|Id=SOR2|SoR|Chapter 16}} though other armor systems such as the GEN1 [[B-class Mjolnir|Mark V[B]]] platform and its variants have been upgraded to be roughly equivalent to GEN3 Mjolnir, offering Spartans greater choice in the Mjolnir they field.{{Ref/Site|Id=CFParallel|URL=https://www.halowaypoint.com/en-us/news/parallel-threads|Site=Halo Waypoint|Page=Canon Fodder - Parallel Threads|D=30|M=3|Y=2023}}

Fitted in between the outer plates and the inner padding, is a crystal computer memory layer. It is knitted at the molecular level and supports the integration of [[Artificial intelligence]]. This type of memory is most often seen on [[Human starship|ships]] and represents 80% of the cost of the suit.{{Ref/Reuse|encyc91}} This layer was present in at least one [[MJOLNIR Powered Assault Armor/Mark V|Mark V]] suit,{{Ref/Novel|FS|Chapter=7}} and likely in at least one Mark VI suit.{{Ref/Note|The image used to illustrate this information in the Encyclopedia is that of the Mark VI. Whether this layer was widely used across all versions of either generation is unknown as Master Chief thus far is the only known Spartan-AI instance.}}

[[File:H4-MJOLNIR-Skinsuit.jpg|thumb|300px|The [[MJOLNIR Powered Assault Armor/Mark VI|MJOLNIR Mark VI]]'s nanocomposite bodysuit.]]

The outer shell of the Mjolnir armor is composed of a fairly thick titanium alloy. This plating covers the chest, arms, hip, legs, calves, feet and hands. This alloy is very resilient, can take significant punishment, and is nearly impervious to small arms fire. While enough shots from armor piercing rounds will breach the outer shell, the suit can take a few glancing blows from them without compromising the armor. The outer shell of all MJOLNIR suits is covered with a refractive coating to help disperse the heat experienced from Covenant energy weapons. However one or two direct hits from any plasma weapon will compromise the armor plating.{{Ref/Reuse|ENCY3}}   

File:MCC-H4Marks.png|Mark V, Mark VI, and [[Project KEYSTONE|Keystone]] in ''Halo 4''.

File:HINF-S5PK1.jpg|GEN1 Mark V and GEN3 Mark VI in ''Halo Infinite'' multiplayer.

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