US 12,072,170 B2
Shaped charge assembly
Victor Björkgren, Karlskoga (SE)
Assigned to SAAB AB, Linköping (SE)
Appl. No. 17/793,685
Filed by SAAB AB, Linköping (SE)
PCT Filed Jan. 21, 2020, PCT No. PCT/SE2020/050051
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/150151, PCT Pub. Date Jul. 29, 2021.
Prior Publication US 2023/0052273 A1, Feb. 16, 2023
Int. Cl. F42B 1/028 (2006.01); F42B 1/032 (2006.01)
CPC F42B 1/028 (2013.01) [F42B 1/032 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A shaped charge assembly comprising a casing, and a rotational symmetrical liner, the casing and liner is coaxially arranged around a longitudinal central axis, wherein the casing and the liner together defines a volume configured to contain an explosive, wherein the liner comprises:
a first longitudinal section having the shape of a truncated cone, is tulip-shaped, is trumpet-shaped, or is partial-hemisphere shaped, and comprising a base end and an opposing truncated end, the first longitudinal section is connected at its base end to the casing;
a second longitudinal section having the shape of a truncated cone and comprising a base end and an opposing truncated end, the truncated end of the second longitudinal section connected by means of an intermediate longitudinal section, to the truncated end of the first longitudinal section;
a third longitudinal section is directly connected to the base end of the second longitudinal section, the third longitudinal section having the shape of a cone, an ogival or a hemisphere;
wherein a tangent of a radially internal surface of the third longitudinal section and a tangent of a radially internal surface of the second longitudinal section at the connection between the third longitudinal section and the second longitudinal section forms an angle β of from 80° to 130°; and
wherein, the intermediate longitudinal section consists of a first longitudinal portion and a second longitudinal portion, the first longitudinal portion is directly connected to the first longitudinal section and the second longitudinal portion is directly connected to the second longitudinal section, and wherein the first longitudinal portion is in the shape of a truncated cone having cone angle smaller than a cone angle of the second longitudinal section, wherein the third longitudinal section has a longitudinal extension of maximally 20% of a longitudinal extension of the liner.