Lightweight monolithic warhead and a method of manufacture
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-012/24
F42B-033/00
출원번호
US-0687539
(2015-04-15)
등록번호
US-10018453
(2018-07-10)
발명자
/ 주소
McCoy, Ryan Alexander
Sheridan, Edward W.
Kelley, Matthew
출원인 / 주소
LOCKHEED MARTIN CORPORATION
대리인 / 주소
Sanks, Esq., Terry M.
인용정보
피인용 횟수 :
1인용 특허 :
7
초록▼
A fragmentable package for use in an explosive armament, is disclosed having individual fragments formed by additively depositing layers, of at least one of selected metal type and a composite that includes a selected metal type, to create interconnected individual fragments to form a plurality of v
A fragmentable package for use in an explosive armament, is disclosed having individual fragments formed by additively depositing layers, of at least one of selected metal type and a composite that includes a selected metal type, to create interconnected individual fragments to form a plurality of voids around an individual outer surface of the individual fragments defining a separation of fragments when detonated, the individual fragments providing structural stiffness and strength. A method is also disclosed.
대표청구항▼
1. A fragmentable package for use in an explosive armament, the fragmentable package comprising an inner wall and an outer wall covering individual fragments comprising additively deposited layers of at least one of a selected metal and a composite that includes the selected metal, the deposited lay
1. A fragmentable package for use in an explosive armament, the fragmentable package comprising an inner wall and an outer wall covering individual fragments comprising additively deposited layers of at least one of a selected metal and a composite that includes the selected metal, the deposited layers to interconnect individual fragments and to form a plurality of voids around an individual outer surface of the individual fragments and to the outer wall, the plurality of voids defining a separation of fragments when detonated, the individual fragments providing structural stiffness and strength independent of the outer wall wherein the inner wall is separated from the outer wall and the individual fragments being between the inner wall and the outer wall, wherein the inner wall and the outer wall comprise the additively deposited layers of the at least one of the selected metal and the composite that includes the selected metal. 2. The fragmentable package according to claim 1, wherein the individual fragments and the plurality of voids provide for a parasitic mass towards zero. 3. The fragmentable package according to claim 1, wherein the plurality of voids provide for a control of thermal conductivity of the fragmentable package based on at least one of a volume of the plurality of voids and a conductivity of the plurality of voids. 4. The fragmentable package according to claim 1, wherein the individual fragments comprises first fragments and second fragments wherein the first fragments are larger in size than the second fragments and the second fragments surround the first fragment between the outer wall and a side of the first fragment adjacent to the outer wall. 5. The fragmentable package according to claim 1, wherein the individual fragments comprise a plurality of fragment shapes wherein the plurality of fragment shapes comprises at least one symmetric fragment shape and a non-symmetric fragment shape. 6. The fragmentable package according to claim 1, further comprising a filler material located within at least one void of the plurality of voids. 7. The fragmentable package according to claim 6, wherein the filler material is provided to absorb energy. 8. The fragmentable package according to claim 6, wherein the filler material is provided to at least one of increase a projection velocity of individual fragments of the fragmentable package and increase a blast overpressure of the fragmentable package. 9. The fragmentable package according to claim 6, wherein the filler material comprises at least one of a phase-change material, coolant, propellant, a reactant material, and an energetic material. 10. The fragmentable package according to claim 1, wherein at least one void of the plurality of voids is configured to receive a wire through the void. 11. The fragmentable package according to claim 1, Wherein at least one void of the plurality of voids comprises at least one of an empty space, a partly sintered space, and porous material within a space. 12. The fragmentable package of claim 1, further comprising at least one interconnector located between adjacent individual fragments, the interconnector formed by additively depositing layers wherein the interconnector comprises smaller sized structure than the individual fragments. 13. The fragmentable package according to claim 1, wherein a thickness of the at least one of the inner wall and the outer wall provides a minimal structural stiffness and strength. 14. The fragmentable package of claim 1, further comprising at least one interconnector located between at least one of the inner wall and the outer wall and an adjacent individual fragment, the interconnector formed by additively depositing layers wherein the interconnector comprises a structured size that is smaller than the individual fragment. 15. A method, comprising: additively depositing a plurality of layers, of at least one of a selected metal and a composite that includes the selected metal, to create a fragmentable package for an explosive having an inner wall, an outer wall and a pattern of individual fragments with voids between individual fragments and the outer wall, the voids defining a separation of the individual fragments when exploded wherein the inner wall is separated from the outer wall and the individual fragments being between the inner wall and the outer wall, wherein the inner wall and the outer wall comprise the additively deposited layers, of the at least one of the selected metal and the composite that includes the selected metal; andcontrolling positioning of a deposition of the plurality of layers to build a structure with the outer wall and the pattern so that the fragmentable package provides for a structural stiffness and strength sufficient for use with a delivery system. 16. The method according to claim 15, further comprising at least one of injecting, chemically or electrically depositing and casting a filler material into the voids to provide for at least one of a cooling effect, to enhance an explosive effect to create increased velocity of individual fragments of the fragmentable package and to increase blast overpressure of the fragmentable package. 17. The method according to claim 15, wherein the inner wall and the outer wall have a thickness to provide a minimal structural stiffness and strength sufficient for use with the delivery system. 18. The method according to claim 17, wherein the additively depositing the plurality of layers to create the fragmentable package includes creating the inner wall such that the individual fragments are between the inner wall and the outer wall and further comprising creating voids between the inner wall and the individual fragments. 19. The method according to claim 15, further comprising varying at least one controlled variable structural parameter during the additively deposition of layers at a specific location in the fragmentable package, the at least one controlled variable structural parameter comprises material composition, variable thickness, variable density, variable material homogeneity, and variable hardness. 20. A fragmentable package for use in an explosive armament, the fragmentable package comprising an inner wall and an outer wall covering individual fragments comprising additively deposited layers of at least one of a selected metal and a composite that includes the selected metal, the deposited layers to interconnect individual fragments and to form a plurality of voids around an individual outer surface of the individual fragments and to the outer wall, the plurality of voids defining a separation of fragments when detonated, the individual fragments providing structural stiffness and strength independent of the outer wall, wherein the individual fragments comprise first fragments and second fragments, wherein the first fragments are larger in size than the second fragments and the second fragments surround the first fragments between the outer wall and a side of the first fragments adjacent to the outer wall.
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