Liners for warheads and warheads having improved liners
Improved liners and explosive devices having improved liners are provided. In accordance with an exemplary embodiment, a liner for an explosive device comprises a plate configured to be positioned against an explosive charge. The plate comprises rhenium, palladium, or a combination thereof, at least a bimodal particle size distribution having a powder grain size no greater than 25 microns, a substantially circular diameter, and a substantially concave interior relative to a surface of the explosive charge.
1. A liner for a warhead, the liner comprising:
a first plate configured to be positioned against an explosive charge of the warhead, a second plate coupled to the first plate, and an explosive disposed between the first plate and the second plate,
the first plate comprising:
rhenium, palladium, or a combination thereof;
the first plate being formed of material having at least a bimodal particle size distribution and having a powder grain size no greater than 25 microns;
a substantially circular diameter; and
a substantially concave interior relative to a surface of the explosive charge the second plate comprising rhenium, palladium, or a combination thereof.
2. The liner of claim 1 , wherein the first plate has a thickness in the range of about 3% to about 5% of a diameter of the explosive charge.
3. The liner of claim 1 , wherein the first plate comprise at least 99% pure rhenium.
4. The liner of claim 1 , wherein the first plate comprises at least 99% pure palladium.
5. The liner of claim 1 , wherein the first plate comprises a combination of palladium and rhenium in a ratio of about 3 to about 97 wt.% palladium: about 97 to about 3 wt.% rhenium.
6. The liner of claim 1 , wherein the first plate further comprises a metal selected from the group consisting of copper, tantalum, steel, and tungsten.
7. The liner of claim 1 , wherein the first plate comprises a multimodal particle size distribution.
8. The liner of claim 1 , wherein about 25% of particles of the first plate have a grain size in the range of about 100 to about 300 nm and about 75% of particles of the first plate have a grain size in the range of about 20 to about 75 nm.
9. The liner of claim 1 , wherein the liner has a thickness is in the range of about 7 to about 25% of a diameter of the explosive charge.
10. The liner of claim 1 , further comprising a thermal shield interposed between the first plate and the explosive.
11. A liner for a warhead, the liner comprising a first plate configured to be positioned against an explosive charge of the warhead, the first plate comprising:
a combination of palladium and rhenium in a ratio of about 3 to about 97 wt.% palladium: about 97 to about 3 wt.% rhenium;
the first plate being formed of material having at least a bimodal particle size distribution and having a powder grain size no greater than 25 microns;
a substantially circular diameter; and
a substantially concave interior relative to a surface of the explosive charge.
12. A liner for a warhead, the liner comprising a first plate configured to be positioned against an explosive charge of the warhead, the first plate comprising:
rhenium, palladium, or a combination thereof;
the first plate being formed of material having at least a bimodal particle size distribution and having a powder grain size no greater than 25 microns, about 25% of particles of the first plate having a grain size in the range of about 100 to about 300 nm and about 75% of particles of the first plate having a grain size in the range of about 20 to about 75 nm;
a substantially circular diameter; and
a substantially concave interior relative to a surface of the explosive charge.