Kinetic energy absorber and method for gun-launched projectile
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0217690
(2011-08-25)
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등록번호 |
US-8848046
(2014-09-30)
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발명자
/ 주소 |
- Stofko, Pavol
- Carlucci, Pasquale
- Mellini, Mark
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출원인 / 주소 |
- The United States of America as Represented by the Secretary of the Army
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
1 |
초록
▼
A round for launching from a gun may include a cartridge case and a projectile body adjacent the cartridge case. A pusher may be disposed in the cartridge case and may be operable to push the projectile body upon firing the round. An imaging sensor may be disposed at least partially in the projectil
A round for launching from a gun may include a cartridge case and a projectile body adjacent the cartridge case. A pusher may be disposed in the cartridge case and may be operable to push the projectile body upon firing the round. An imaging sensor may be disposed at least partially in the projectile body. The imaging sensor may include a sensor base and a sensor lens. A first kinetic energy absorber may be disposed around the sensor base. A second kinetic energy absorber may be disposed around the sensor lens. After the round is fired and the pusher exits the gun, the pusher may separate from the projectile body and the second kinetic energy absorber may separate from the imaging sensor.
대표청구항
▼
1. A round for launching from a gun, the round comprising: a cartridge case;a projectile body adjacent the cartridge case, wherein the cartridge case is crimped to the projectile body, and wherein the projectile body includes a plurality of aft-extending legs, each leg including a flat portion there
1. A round for launching from a gun, the round comprising: a cartridge case;a projectile body adjacent the cartridge case, wherein the cartridge case is crimped to the projectile body, and wherein the projectile body includes a plurality of aft-extending legs, each leg including a flat portion thereon;a pusher having a concave surface, said pusher disposed in the cartridge case and operable to push the projectile body upon firing the round;an imaging sensor comprising a passive infrared sensor, said imaging sensor disposed at least partially in the projectile body, said imaging sensor including a sensor lens including a convex surface, and a sensor base;a first kinetic energy absorber comprising Sorbothane® disposed around said sensor base; anda second kinetic energy absorber comprising Sorbothane® disposed around the sensor lens, wherein after the round is fired and the pusher exits the gun, the pusher separates from the projectile body and the second kinetic energy absorber separates from the imaging sensor, and wherein said second KE absorber is a hollow generally hemispherical shape with an annular base, and wherein said second KE absorber has an outer concave surface sized to mate to the imaging sensor lens convex surface, and wherein said second KE absorber also has an inner convex surface that is sized to mate to the concave surface of the pusher, and whereby said second kinetic further has a thickness “t” along a longitudinal centerline between the concave and convex surfaces of said second absorber, “t” being determined by the expected magnitude of acceleration forces that may be experienced by the projectile during launch. 2. The round of claim 1 wherein “t” is equal to about 0.8 inches to about 0.16 inches. 3. The round of claim 2 wherein said first KE absorber is generally disc-shaped and has an outer diameter “d” slightly less than an inner diameter “D” of the projectile body, and wherein the circumferences on both faces of said first KE absorber are chamfered to create free volume for said first KE absorber to fill during compression of said first KE absorber upon impact of the projectile body at an impact point, and wherein a first face of said first KE absorber has a first recessed shoulder sized to rest flat portions of a plurality of aft extending legs of the projectile body and also to secure said first KE absorber in the projectile body by the first KE absorber being compressed against the flat portions by weight of a circuit board, batteries, and electronic components located forward of said first KE absorber, and whereby said first face also includes an annular recessed base sized for receiving flat portions of the sensor lens and said first face also has a countersunk recessed portion hole sized for receiving the sensor base of the imaging sensor, and said first face also has a slot that extends from said recessed portion hole radially outward, sized to house a wire for connecting the imaging sensor with the circuit board, and wherein said second face of said first KE absorber has an annular recessed area sized for also receiving components of the circuit board. 4. The round of claim 3, wherein the round is a 40 mm round. 5. A method, comprising: providing the round of claim 4;firing the round in the gun;after the pusher exits the gun and while the round is airborne, separating the pusher from the projectile body and separating the second kinetic energy absorber from the sensor lens. 6. The method of claim 5, further comprising propelling the projectile body using the pusher. 7. The method of claim 5, further comprising cushioning an impact of the imaging sensor using the first kinetic energy absorber. 8. The method of claim 7, further comprising, after cushioning the impact, using the imaging sensor to generate images of an area around the impact point.
이 특허에 인용된 특허 (1)
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Reinhardt, Lyonel; Carlucci, Pasquale; Payne, Nicholas, Kinetic energy absorber.
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