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The Modular Scalable Vest (MSV) is a bullet-resistant vest that has been introduced by the United States Armed Forces in 2018.. The Modular Scalable Vest is replacing all other body armor systems in use, including the OTV (outer tactical vest), IOTV (improved outer tactical vest) and SPCS (soldier plate carrier system). [1]
Kevlar (para-aramid) [2] is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, [ 3 ] [ 2 ] [ 4 ] the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires.
Personnel Armor System for Ground Troops (PASGT, pronounced / ˈ p æ z ɡ ə t / PAZ-gət) is a combat helmet and ballistic vest that was used by the United States military from the early 1980s until the early or mid-2000s, when the helmet and vest were succeeded by the Lightweight Helmet (LWH), Modular Integrated Communications Helmet (MICH), and Interceptor body armor (IBA) respectively.
Excellent thermal stability at temperature extremes, water repellency, chemical stability and resistance to petroleum products have made Kevlar KM2 an indispensable asset to the military personnel who use it every day." [1] "Kevlar KM2 fiber is a transversely isotropic material. Its tensile stress–strain response in the axial direction is ...
The starting point for this development were the ballistic-only offerings of that time using NIJ Level 2A, 2, and 3A or HOSDB HG 1 and 2, with compliant ballistic vest products being manufactured with areal densities of between 5.5 and 6 kg/m 2 (1.1 and 1.2 lb/ft 2 or 18 and 20 oz/ft 2). However police forces were evaluating their "street ...
The Enhanced S‐SAPIs have only 6" x 8" size as the S-SAPIs. [14] ESBI or Enhanced S-SAPI plates can be replaced with size X-Small ESAPI plates (by unfolding an extension built into the bottom of the ESBI Carrier assembly for the U.S. Army and the S-SAPI Carrier assembly for U.S. Marines for OTVs), if permitted by the unit commander. [15] [16 ...
Numbering the carbon atoms sequentially around a ring, para-aramids have the linkages attached at positions 1 and 4, while meta-aramids have them at positions 1 and 3. [7] That is, the attachment points are diametrically opposite each other in para-aramids, and two atoms apart in meta-aramids. The illustration thus shows a para-aramid.
Nomex is an example of a meta variant of the aramids (Kevlar is a para aramid). Unlike Kevlar, Nomex strands cannot align during filament polymerization and have less strength: its ultimate tensile strength is 340 MPa (49,000 psi). [2] However, it has excellent thermal, chemical, and radiation resistance for a polymer material.