[특허]Drag-stabilized water-entry projectile and cartridge assembly

Drag-stabilized water-entry projectile and cartridge assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F42B-015/22
출원번호	US-0409265 (2009-03-23)
등록번호	US-8222583 (2012-07-17)
발명자 / 주소	Fu, Jyun-Horng Paulic, Antonio
출원인 / 주소	Lockheed Martin Corporation
대리인 / 주소	Howard IP Law Group, PC
인용정보	피인용 횟수 : 0 인용 특허 : 28

초록 ▼

A drag-stabilized water-entry projectile having a projectile body, one or more drag-stabilizing elements, such as fins, flares or canards, and one or more attachment members adapted to hold the one or more drag-stabilizing elements to the projectile body. The one or more attachment members are coated with a thermally reactive material. A projectile and cartridge assembly has a shear pin, a projectile having a first cutout portion, the cutout portion sized to receive the shear pin. The assembly also includes a sabot configured to house the projectile and having a second cutout portion, the second cutout portion sized to receive the shear pin. The cutout portion is positioned to provide an offset region between an aft end of the projectile and a base of the sabot.

대표청구항 ▼

1. A water-entry projectile comprising: a body;one or more drag-stabilizing elements;one or more attachment members adapted to couple said one or more drag-stabilizing elements to said body via a corresponding curved base which conforms circumferentially to an outer surface of said body, and said drag-stabilizing elements being disposed about an aft end of said body;wherein said one or more attachment members are adapted to cause said one or more drag-stabilizing elements to detach from said projectile during air-borne flight prior to water entry;an impact sensitive element, said impact sensitive element connected to one or more of said one or more attachment members and extending over a portion of said aft end of said projectile;a delay element, said delay element connecting one or more of said one or more attachment members to said impact sensitive element;wherein said impact sensitive element is adapted to ignite said delay upon receipt of a kinetic impact; anda coil extending through a center of said projectile, said coil coated with a thermally reactive material. 2. The projectile of claim 1, wherein each of said one or more drag-stabilizing elements comprises a fin extending radially from an outer surface of the body. 3. The projectile of claim 1, wherein said one or more attachment members comprise one or more longitudinal members coated with a thermally reactive material. 4. A projectile comprising: a body;one or more drag-stabilizing elements;a means for attaching said plurality of drag-stabilizing elements to said body via a corresponding curved base which conforms circumferentially to an outer surface of said body, and said drag-stabilizing elements being disposed about an aft end of said body in such a way as to cause said drag-stabilizing elements to detach during flight;wherein, the means for attaching said plurality of drag-stabilizing elements comprises: a chemical bonding agent; anda delay mechanism coupled to said chemical bonding agent, said delay mechanism adapted to initiate a chemical reaction during firing of said projectile to cause said chemical bonding agent to deteriorate during flight. 5. The projectile of claim 4, wherein each of said one or more drag-stabilizing elements comprises a fin extending radially from an outer surface of the body. 6. The projectile of claim 4, wherein the means for attaching said plurality of drag-stabilizing elements further comprises: one or more grooves cut into one or more sides of said projectile, said grooves extending to an aft end of said projectile and configured to mate with said one or more drag-stabilizing features;wherein said one or more grooves are sized to allow said one or more drag-stabilizing features to slide off said projectile due to wind resistance. 7. A projectile comprising: a body;one or more drag-stabilizing elements;a means for attaching said plurality of drag-stabilizing elements to said body via a corresponding curved base which conforms circumferentially to an outer surface of said body, and said drag-stabilizing elements being disposed about an aft end of said body in such a way as to cause said drag-stabilizing elements to detach during flight;wherein the means for attaching said plurality of drag-stabilizing elements comprises: an electromagnetic coupling mechanism;a delay mechanism coupled to said electromagnetic coupling mechanism, said delay mechanism adapted to initiate a polarity reversal of said electromagnet coupling mechanism to cause said drag-stabilizing elements to detach during flight. 8. A water-entry projectile comprising: a body;one or more drag-stabilizing elements;one or more attachment members adapted to couple said one or more drag-stabilizing elements to said body;an impact sensitive element;a delay element connecting one or more of said one or more attachment members to an impact sensitive element, said delay element comprising a coil extending through a center of said projectile, said coil coated with a thermally reactive material;wherein said one or more attachment members are adapted to cause said one or more drag-stabilizing elements to detach from said projectile during air-borne flight prior to water entry; andwherein said impact sensitive element is connected to one or more of said one or more attachment members and extending over a portion of an aft end of said projectile; wherein said impact sensitive element is adapted to ignite said delay element upon receipt of a kinetic impact.

이 특허에 인용된 특허 (28)

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Davis, Bradford S.; Garner, James M.; Watson, Jerry L.; Newill, James F., Fin disengagement device for limiting projectile range.
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King, Michael J.; Fanucci, Jerome P., Grid fin control system for a fluid-borne object.
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Castano, John M.; Kuklinski, Robert, High-speed supercavitating underwater vehicle.
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Mikhail Ameer G. (Bel Air MD), Kinetic energy projectile with impact-ejected fins.
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Kobayashi,Hiroaki; Tanatsugu,Nobuhiro; Sato,Tetsuya; Hongo,Motoyuki; Maru,Yusuke, Method for reducing resistance of flying object using expandable nose cone.
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Varghese, Abraham N.; Uhlman, James S., Non-linear axisymmetric potential flow boundary model for partially cavitating high speed bodies.
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Hall Robert C. (P.O. Box 811 Atlanta TX 75551), Projectile with an extendable boattail.
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Michel,Matthew A.; Mayersak,Joseph R.; Benedict,Lance, Safe and arm device and explosive device incorporating safe and arm device.
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Gieseke,Thomas J., Supercavitating projectile with propulsion and ventilation jet.
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Hermann L Miskelly, Supercavitating underwater projectile.
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Paulic, Antonio; Fu, Alex, Supercavitating water-entry projectile.
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Kuklinski, Robert, Supercavitation ventilation control system.
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Mayersak, Joseph R.; Benedict, Lance H.; Krass, Robert M., System for clearing buried and surface mines.
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