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Shot-by-shot erosion modeling of retired 120-мм M256 gun tube by Sopok S., Vottis P., O’Hara P., Pflegl G., Rickard C. is a nonfiction available to read on EtoBox.

What is Shot-by-shot erosion modeling of retired 120-мм M256 gun tube about?

N.Y. Watervliet: US Army Armament Research, Development and engineering center. 1998. As our gun erosion database increases for in-service and out-of-service 120-mm M256 tubes with M829Ax series rounds, distinct erosion patterns and mechanisms are emerging. Variability exists for M256 guns with M829Ax series rounds depending on round count, round type, round-conditioning temperature, and their order. Our M256/M829Ax gun system erosion model—with its interior ballistics, thermochemistry, and boundary layer components—is constantly being guided and refined by the erosion and materials analysis data from fired gun tubes. A recent refinement includes the improvement of the gun steel subsurface exposure model due to high quality, difficult to obtain data from in- service M256 tubes. Other recent refinements to the boundary layer heat transfer model are based on thermal data from M256 tubes. These refinements include the improvement/incorporation of case gas cooling effects, turbulent gas mixing/heating effects, and a very minor contribution from forcing cone-induced vena contracta cooling effects. These latter refinements are calibrated away from crack walls by positional thermal wall

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Author

Sopok S., Vottis P., O’Hara P., Pflegl G., Rickard C.

Language

EN

Category

nonfiction

Subjects

Technology, Stem