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Rolled homogeneous armour (RHA) is a type of vehicle armour made of a single steel composition hot-rolled to improve its material characteristics, as opposed to layered or cemented armour. Its first common application was in tanks. After World War II, it began to fall out of use on main battle tanks and other armoured fighting vehicles intended to see front-line combat as new anti-tank weapon technologies were developed which were capable of relatively easily penetrating rolled homogeneous armour plating even of significant thickness.
Today, the term is primarily used as a unit of measurement of the protection offered by armour on a vehicle (often composed of materials that may not actually contain steel, or even contain any metals) in equivalent millimetres of RHA, referring to the thickness of RHA that would provide the same protection. Typically, modern composite armour can provide the same amount of protection with much thinner and lighter construction than its protective equivalence in RHA. Likewise, the term is also used as a unit of measurement of penetration capability of armour-piercing weaponry, in terms of the millimetres of RHA that the weapon system can reliably penetrate.
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details of the armour remain a secret, it has been described as being made by sandwiching composite panels between rolledhomogeneousarmour (RHA). The number...
turret, unlike traditional cast ones, fabricated using steel rolledhomogeneousarmour (RHA). Work on the welded turrets of Obiekt 187, Obiekt 188 (T-90)...
the main armour could withstand much greater hits. Due to lack of materials, German industry eventually switched to RolledHomogeneousArmour (RHA), which...
roughly 50 meters, where it can penetrate up to 100 millimeters of rolledhomogeneousarmour (RHA) plate. The energy carried by the projectile is large enough...
self-defence. The Panzer III Ausf. A through C had 15 mm (0.59 in) of rolledhomogeneousarmour on all sides with 10 mm (0.39 in) on the top and 5 mm (0.20 in)...
line-of-sight thickness twice the armour's normal thickness, as the cosine of 60° is ½. When armour thickness or rolledhomogeneousarmour equivalency (RHAe) values...
researched which include buckypaper, and aluminium foam armour plates. Rolledhomogeneousarmour is strong, hard, and tough (does not shatter when struck...
its Chobham armour, which gave protection far superior to any monolithic RolledHomogeneousArmour (RHA), then standard of western tank armour material....
RHA is an acronym that may refer to: Rolledhomogeneousarmour Regional health authority (disambiguation) Religious Heritage of America Residence hall...
have been face-hardened for the Panzer IV were instead made with rolledhomogeneousarmour plate. By late 1944, Zimmerit was no longer being applied to German...
armor-piercing jet of metal that can penetrate 1 in (25 mm) of rolledhomogeneousarmour at 500 m. The shell is also designed to fragment upon impact,...
armour developments. By the 1960s, anti-tank rounds could penetrate a meter of steel so as to make the application of traditional rolledhomogeneous armour...
such rounds at less than half the weight of rolledhomogeneousarmour. CMF can replace rolled steel armour with the same protection for one-third the weight...
furniture, steel wool, tool, and armour in the form of personal vests or vehicle armour (better known as rolledhomogeneousarmour in this role). Before the...
14 m (10 ft 4 in) Height 2.72 m (8 ft 11 in) Crew 4 Armour up to 120 mm Rolledhomogeneousarmour Main armament 105 mm Royal Ordnance L7 rifled gun with...
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