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Writer's pictureEngineering Pivot

Mechanical Engineering in WW2


By Samson Zhu



World War II (1939-1945) was not only a period of immense human conflict but also a time of unprecedented technological innovation. Many of the advancements made during this era had their roots in mechanical engineering, significantly shaping the outcome of the war and laying the foundation for future technological developments. 



The Evolution of Tank Design 


Before World War II, tanks were slow, lightly armored, and equipped with modest firepower. They often get bogged down in trenches, struggling to provide heavy impact in warfare. However, the demands of the battlefield necessitated rapid advancements. Mechanical engineers played a crucial role in redesigning tanks to enhance their performance and survivability.


Christie suspension: Invented by American mechanical engineer J. Walter Christie, it was famously used in the Soviet’s T34 tank which allowed for better mobility over rough terrain. This suspension system enabled higher speeds and improved crew comfort, which were critical for prolonged engagements and rapid movements across varied landscapes. 


More powerful and reliable engines:  It was a cornerstone in tank evolution. Engineers focused on increasing horsepower to improve speed and mobility. For example, the American M4 Sherman tank, equipped with a robust Continental R975 radial engine, could reach speeds of up to 30 mph, significantly enhancing its tactical versatility as proven during the sweeping of General Patton’s armor forces across France in 1944.



Armor and Armaments 


The tanks are now at a reliable speed and survivability but they’re still missing their main firepower and their armor protections. 


High-Velocity Guns: The development of high-velocity guns by especially German Engineers, such as the German 88mm gun used in the Tiger I tank, allowed for greater armor penetration and accuracy at longer ranges. These guns were capable of defeating the armor of most Allied tanks, establishing a new dominance and standard for tank armament.


Sloped Armor: The introduction of sloped armor was important in tank design. By angling the armor plates, engineers increased the effective thickness of the armor without adding additional weight. Once again it was shown through the T-34's sloped armor design as it was particularly effective in deflecting incoming rounds, making it one of the most resilient tanks of the war.



Impact on Modern Engineering


The advancements in tank and armored vehicle technology during World War II had a huge lasting impact on mechanical engineering and modern military vehicle design. Introducing the principles of powerful engines, advanced suspension systems, innovative armor configurations, and effective armaments. Especially during World War II, it laid a foundation for future developments, highlighting the critical role of mechanical engineering in warfare and military technology. 



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