Tables, curves, equations, and example problems presented in the report make it possible, within the range of the experiments, to accurately predict any desired dimensions of the limit of complete rupture. (Author)
Twenty-four instrumented and 106 uninstrumented blasts ranging in weight from 2.5 to 40 lb of four types of explosives were detonated above, in contact with, and at various depths below the ice surface. The tests were conducted at the edge of the Greenland Ice Cap, near Camp Tuto, during the summer of 1957. Under-ice direct shock pressure, air-induced under-ice shock pressure, and airblast pressure from shallow under-ice bursts, contact bursts, ...
Inert mortar shells and inert general-purpose, semi-armor-piercing, and armor-piercing bombs were dropped on frozen ground (glacial till) near Fort Churchill, Manitoba. Canada during the winter 1956-57 to observe projectile penetration and determine the feasibility of forming trenches and foxholes in frozen ground by means of bombs released from aircraft. Projectiles ranging from 81-mm mortar shells to 1600 AP bombs were released from altitudes of 2000 to 24,500 ft. Analysis of ...
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