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In July 1973 a trip to the United Kingdom, in order to witness the progress of British developed Chobham special armor, was made by representatives from Chrysler and General Motors escorted by the personnel from the Ballistic Research Laboratory and the XM1 Project Manager, Major General Robert J. Baer.[59] They observed the manufacturing processes required for the production of this special armor and saw a proposed design for a new British vehicle utilizing this special armor. Both contractors reevaluated their proposed armor configurations based upon the newly obtained data. This led to major changes in the General Motors XM1. The most prominent of which is the turret front changing from vertical to sloped armor. The Chrysler XM1 on the other hand retained its basic shape although a number of changes were made. The Ballistic Research Laboratory had to develop new special armor combinations in order to accommodate the changes made by the contractors.[60]
For the base model M1 Abrams, Steven J. Zaloga gives a frontal armor estimate of 350 mm vs armor-piercing fin-stabilized discarding-sabot (APFSDS) and 700 mm vs high-explosive anti-tank warhead (HEAT) in M1 Abrams Main Battle Tank 1982–1992(1993).[10] In M1 Abrams vs T-72 Ural (2009), he uses Soviet estimates of 470 mm vs APFSDS and 650 mm vs HEAT for the base model Abrams. He also gives the Soviet estimates for the M1A1, 600 mm vs APFSDS, and 700 mm vs HEAT.[9]
Armor protection was improved by implementing a new special armor incorporating depleted uranium. This was introduced into the M1A1 production starting October 1988. This new armor increased effective armor particularly against kinetic energy rounds[61] but at the expense of adding considerable weight to the tank, as depleted uranium is 1.7 times more dense than lead.[62] The first M1A1 tanks to receive this upgrade were tanks stationed in Germany. US-based tank battalions participating in Operation Desert Storm received an emergency program to upgrade their tanks with depleted uranium armor immediately before the onset of the campaign. M1A2 tanks uniformly incorporate depleted uranium armor, and all M1A1 tanks in active service have been upgraded to this standard as well.[63] This variant was designated as the M1A1HA (HA for Heavy Armor).[8]
For the M1A1HA, Zaloga gives a frontal armor estimate of 600 mm vs APFSDS and 1300 mm vs HEAT in M1 Abrams Main Battle Tank 1982–1992, nearly double the original protection of the Abrams.[8] In M1 Abrams vs T-72 Ural, he uses different estimates of 600 mm vs APFSDS and 700 mm vs HEAT for the front hull and 800 mm vs APFSDS and 1300 mm vs HEAT for the front of the turret.[9]
The Abrams may also be fitted with reactive armor over the track skirts if needed (as in the Tank Urban Survival Kit) and slat armor over the rear of the tank and rear fuel cells to protect against ATGMs. Protection against spalling is provided by a Kevlar liner.
@北极熊的光辉 这是英文M1A2资料，你哪只眼睛看到穿甲弹有700MM 穿甲弹穿深
For the base model M1 Abrams, Steven J. Zaloga gives a frontal armor estimate of 350 mm vs armor-piercing fin-stabilized discarding-sabot (APFSDS) and 700 mm vs high-explosive anti-tank warhead (HEAT) in M1 Abrams Main Battle Tank 1982–1992(1993).[10] In M1 Abrams vs T-72 Ural (2009), he uses Soviet estimates of 470 mm vs APFSDS and 650 mm vs HEAT for the base model Abrams. He also gives the Soviet estimates for the M1A1, 600 mm vs APFSDS, and 700 mm vs HEAT.[9]
Armor protection was improved by implementing a new special armor incorporating depleted uranium. This was introduced into the M1A1 production starting October 1988. This new armor increased effective armor particularly against kinetic energy rounds[61] but at the expense of adding considerable weight to the tank, as depleted uranium is 1.7 times more dense than lead.[62] The first M1A1 tanks to receive this upgrade were tanks stationed in Germany. US-based tank battalions participating in Operation Desert Storm received an emergency program to upgrade their tanks with depleted uranium armor immediately before the onset of the campaign. M1A2 tanks uniformly incorporate depleted uranium armor, and all M1A1 tanks in active service have been upgraded to this standard as well.[63] This variant was designated as the M1A1HA (HA for Heavy Armor).[8]
For the M1A1HA, Zaloga gives a frontal armor estimate of 600 mm vs APFSDS and 1300 mm vs HEAT in M1 Abrams Main Battle Tank 1982–1992, nearly double the original protection of the Abrams.[8] In M1 Abrams vs T-72 Ural, he uses different estimates of 600 mm vs APFSDS and 700 mm vs HEAT for the front hull and 800 mm vs APFSDS and 1300 mm vs HEAT for the front of the turret.[9]
The Abrams may also be fitted with reactive armor over the track skirts if needed (as in the Tank Urban Survival Kit) and slat armor over the rear of the tank and rear fuel cells to protect against ATGMs. Protection against spalling is provided by a Kevlar liner.
@北极熊的光辉 这是英文M1A2资料，你哪只眼睛看到穿甲弹有700MM 穿甲弹穿深
