According to an embodiment of the present invention, a smart shell mounted on a gun barrel having a rifle formed on an inner circumference, and formed to hit a military target area by using a plurality of scattering pieces includes: a warhead part having the scattering pieces embedded therein; a cover part having one or more grooves provided on an outer circumference and coupled to cover the warhead part, and separated from the warhead part by a difference in rotational speed relative to the warhead part when close to the target area; and a propulsion part providing a propulsion force to the warhead part.
1 . A smart shell configured to be launched from a gun barrel, the barrel having rifling formed on an inner circumference, and the smart shell formed to hit a target area by using a plurality of scattering pieces, comprising:
a warhead part having the scattering pieces embedded therein;
a cover part having a groove or protrusion provided on an outer circumference, the cover part coupled to cover the warhead part,
wherein separation of the cover part from the warhead part is at least initiated by a difference in rotational speed relative to the warhead part when close to the target area;
a propulsion part providing a propulsion force to the warhead part; and
wherein the propulsion part is configured to travel with the warhead part at least through the gun barrel.
2 . The smart shell of claim 1 , further comprising:
a speed control assembly coupled to the cover part to limit a shape of the groove by covering at least a portion of the groove.
3 . The smart shell of claim 2 , wherein the speed control assembly includes
a cover portion covering the groove,
a coupling portion coupled to the cover part, and
a connection portion connecting the cover portion and the coupling portion, and formed to have a relatively thinner cross-section relative to the cover portion and the coupling portion.
4 . The smart shell of claim 3 , wherein one side of the cover portion is formed to be thicker than the other side.
5 . The smart shell of claim 1 , further comprising:
a sealing part inserted between the cover part and the warhead part,
wherein the sealing part is formed to be damaged when the rotational speed difference is equal to or more than a predetermined level.