While the suit served as a successful proof of concept of using a strontium-90 based plating over the armor, this improvement was not adopted into the armor's schematics, before the onset of the Great War. A single suit of X-01 was provided to the Nuka-Cola Corporation, as part of Project Cobalt. However, although the suit was technically functional by late 2077, it was burdened with numerous issues that precluded widespread use in the field. It represented a radically new approach to designing powered armor, eschewing traditional design philosophies that defined the T series, and was a high-profile research project meant to supersede previous power armor models. The armor usually carries enough fuel to last for one thousand years.Ĭommissioned by the Joint Chiefs of Staff, the development of the X-01 began shortly before the Great War. The 10-micron-thick silver ablative coating can reflect laser and other radiation emissions without damage to the composite subsurface.

Made of a poly-laminate composite, the outer shell of the T-51b is lightweight and capable of absorbing over 2500 Joules of kinetic impact. The armor is fitted with a back-mounted TX-28 MicroFusion Pack which generates an output power of 60,000 Watts to power the HiFlo hydraulic systems built into the frame of the suit. Now, only the most technologically advanced factions with ties to the pre-Great War American military or federal government, such as the Brotherhood of Steel or the Enclave, have access to this type of power armor. At the end of the Anchorage Reclamation in January 2077, the armor had become standard issue for American soldiers in the Army's Mechanized Cavalry Regiments. The T-51b powered Infantry armor represented the peak of armored infantry technology before the Great War, developed in the laboratories of the West Tek Research Facility. Sometime after 2242: After the destruction of the Oil Rig, the Enclave finished developing a Tesla Power Armor based on the standard advanced power armor, which provides less protection than advanced power armor, Mk II, but allows the wearer to wield energy weapons more effectively.October 2220: Enclave scientists finally develop a reliable version of what they call 'advanced power armor.' The prototype's capabilities (and the various accidents, explosions, and deaths involved in its creation) are classified by order of the Enclave's President Dick Richardson for the sake of morale.Many prototypes are developed and tested. 2215: Under Presidential order, the Enclave's scientists and engineers begin to work on an upgraded version of power armor that exceeds the performance of the T-51b model.None of these are much of an improvement over the original pre-Great War models of power armor, and some actually prove to be worse when used in actual combat. 2198: The Enclave begins the first work since the Great War on the development of various new technologies, including power armor variations.

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