| 摘要 |
The casings are constituted by a smooth outer wall of revolution, and an inner wall squared such that it comprises relief elements in the shape of parallelepipeds separated by hollow spaces of the same shape and of the same dimensions, the said relief elements being in contact only by their lateral edges and the said hollow spaces being filled with a different material in order to form with the relief elements a smooth cylindrical continuous inner surface inside of which the explosive charge is disposed, characterised in that the relief elements 4 are rectangular parallelepipeds with square bases, disposed on the periphery of the inner wall on helical surfaces with a constant right-hand or left-hand pitch, a diagonal of the squares being parallel to the longitudinal axis of the casing. <IMAGE>
|
