IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0239520
(2001-03-14)
|
우선권정보 |
SE-200000922 (2000-03-21) |
국제출원번호 |
PCT/SE01/00524
(2001-03-14)
|
국제공개번호 |
WO01/79779
(2001-10-25)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Connolly Bove Lodge & Hutz LLP
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
8 |
초록
▼
The present invention relates to a long-range artillery shell ( 1 ) that is fin-stabilised in its trajectory and which is designed to be fired in a rifled gun barrel and thus has a slipping driving band ( 8 ) as main contact surface with the inside of the barrel, and has a so-called base-bleed unit
The present invention relates to a long-range artillery shell ( 1 ) that is fin-stabilised in its trajectory and which is designed to be fired in a rifled gun barrel and thus has a slipping driving band ( 8 ) as main contact surface with the inside of the barrel, and has a so-called base-bleed unit ( 3 ) with a number of stabilization fins ( 9-14 ) that are deployable after the shell has left the barrel. A special feature of the shell ( 1 ) as claimed in the present invention is that the fins ( 9-14 ), when activated, are radially displaceable to project outside the external periphery of the shell through slots or through-holes ( 28 ) in the wall of the shell, but are initially radially retracted inside the propellant motor section or propellant chamber ( 4 ) of the base-bleed unit ( 3 ) between dedicated protective walls ( 16-17 ) that isolate the fins from the surrounding propelling charges ( 25 ) of the propellant motor and also divide the inside of the propellant motor ( 4 ) into sectors ( 18-23 ) that are separated from each other.
대표청구항
▼
1. An artillery shell comprising:a base-bleed unit to increase the range of the shell; andfins for stabilization in trajectory, whereinthe fins when activated, are radially displaceable to project outside an external periphery of the shell through slots or through-holes in a wall of the shell, andwh
1. An artillery shell comprising:a base-bleed unit to increase the range of the shell; andfins for stabilization in trajectory, whereinthe fins when activated, are radially displaceable to project outside an external periphery of the shell through slots or through-holes in a wall of the shell, andwhen the fins are in a retracted position they are retracted into a propellant motor section or propellant chamber of the base-bleed unit between dedicated protective walls, wherein the protective walls isolate the fins from the surrounding propelling charges of a propellant motor and divide the inside of the propellant motor into sectors that are separated from each other. 2. An artillery shell comprising:a base-bleed unit to increase the range of the shell; andfins for stabilization in trajectory, whereinthe fins when activated, are radially displaceable to project outside an external periphery of the shell through slots or through-holes in a wall of the shell,when the fins are in a retracted position they are retracted into a propellant motor section or propellant chamber of the base-bleed unit between dedicated protective walls, wherein the protective walls isolate the fins from surrounding propelling charges of a propellant motor and divide the inside of the propellant motor into sectors that are separated from each other, andthe fins that are initially radially retracted and their surrounding protective walls leave a central propellant gas channel free in the centre of the propellant chamber when the fins are in retracted mode. 3. An artillery shell comprising:a base-bleed unit to increase the range of the shell; andfins for stabilization in trajectory, whereinthe fins when activated, are radially displaceable to project outside an external periphery of the shell through slots or through-holes in a wall of the shell,when the fins are in a retracted position they are retracted into a propellant motor section or propellant chamber of the base-bleed unit between dedicated protective walls, wherein the protective walls isolate the fins from surrounding propelling charges of a propellant motor and divide the inside of the propellant motor into sectors that are separated from each other, andeach fin is divided into two or more telescopically retractable elements. 4. An artillery shell as claimed in claim 1 wherein the shell deploys the fins after the shell has left a barrel by utilising residual barrel pressure inside the propellant chamber of the base-bleed unit alternatively supplemented by propellant gas pressure from the propellant charges contained in the propellant chamber when the propellant changes are ignited. 5. An artillery shell as claimed in claim 1 wherein the shell is fired from a barrel of a weapon, and wherein until the shell has left the barrel the shell has a protective casing covering the retracted fins and the base-bleed unit that is removable rearwards, in relation to a direction of flight of the shell, which casing via a dedicated opening has access to overpressure prevailing in the barrel. 6. An artillery shell as claimed in claim 1 wherein the inner longitudinal edges of the fin elements facing the propellant chamber, when deployed in their outermost position, close their respective slots or through-holes in the propellant chamber of the base-bleed unit. 7. An artillery shell as claimed in claim 2 wherein each fin is divided into two or more telescopically retractable elements. 8. An artillery shell as claimed in claim 2 wherein the shell deploys the fins after the shell has left the band by utilising residual band pressure inside the propellant chamber of the base-bleed unit alternatively supplemented by the propellant gas pressure from the propellant change contained in the chamber when the changes are ignited. 9. An artillery shell as claimed in claim 3 wherein the shell deploys the fins after the shell has left the barrel by utilizing the residual barrel pressure maids the propellant chamber of the base-b leed unit alternatively supplemented by the propellant gas pressure from the propellant charge contained in the chamber when the charge is ignited. 10. An artillery shell as claimed in claim 2 wherein until it has left a barrel from which it is fired the said shell has a protective casing coveting the retracted fins and the base-bleed unit that is removable rearwards, in relation to the direction of flight, which casing via a dedicated opening has access to overpressure prevailing in the barrel. 11. An artillery shell as claimed in claim 3 wherein until it has left a barrel from which it is fired the said shell has a protective casing covering the retracted fins and the base-bleed unit that is removable rearwards, in relation to the direction of flight, which casing via a dedicated opening has access to overpressure prevailing in the barrel. 12. An artillery shell as claimed in claim 4 wherein until it has left the barrel from which it is fired the said shell has a protective casing covering the retracted fins and the base-bleed unit that is removable rearwards, in relation to the direction of flight, which casing via a dedicated opening has access to overpressure prevailing in the barrel. 13. An artillery shell as claimed in claim 2 wherein inner longitudinal edges of the fin elements facing the propellant chamber, when deployed in their outermost position, close their respective slots or through-holes in the propellant chamber of the base-bleed unit. 14. An artillery shell as claimed in claim 3 wherein inner longitudinal edges of the fin elements facing the propellant chamber, when deployed in their outermost position, close their respective slots or through-holes in the propellant chamber of the base-bleed unit. 15. An artillery shell as claimed in claim 4 wherein inner longitudinal edges of the fin elements facing the propellant chamber, when deployed in their outermost position, close their respective slots or through-holes in the propellant chamber of the base-bleed unit. 16. An artillery shell as claimed in claim 5 wherein the inner longitudinal edges of the fin elements facing the propellant chamber, when deployed in their outermost position, close their respective slots or through-holes in the propellant chamber of the base-bleed unit. 17. An artillery shell as claimed in claim 1 wherein each fin is divided into two or more telescopically retractable elements. 18. An artillery shell as claimed in claim 7 wherein the shell deploys the fins after the shell has left the barrel by utilising residual barrel pressure inside the propellant chamber of the base-bleed unit alternatively supplemented by the propellant gas pressure from the propellant charges contained in the said chamber when the charge is ignited. 19. An artillery shell comprising:a front section; anda base-bleed unit, comprising:a propellant section housing propellant;fins for stabilization of the shell's trajectory; andwalls disposed between the propellant and the fins, whereinthe fins are radially displaceable from a retracted position within the base-bleed unit to a position projecting outside a periphery of the shell, andwhen the fins are retracted into the propellant section of the base-bleed unit between the walls, the walls isolate the fins from the propelling charges and divide the inside of the propellant section into separate sectors. 20. An artillery shell as claimed in claim 19 wherein each fin comprises two or more telescopically retractable elements. 21. An artillery shell as claimed in claim 19 wherein the walls leave a central propellant gas channel free in the centre of the propellant section when the fins are retracted. 22. An artillery shell as claimed in claim 19 comprising:a removable casing surrounding the base bleed unit when the fins are in a retracted position. 23. An artillery shell as claimed in claim 22 wherein an opening introduces overpressure into the casing during firing. 24. An artillery shell comprising:a front section; anda b ase-bleed unit, comprising:a propellant section housing propellant; andfins for stabilization of the shell's trajectory, whereinthe fins are radially displaceable from a retracted position within the base-bleed unit and surrounded by propellant, to a position projecting outside a periphery of the shell, andeach fin comprises two or more telescopically retractable elements. 25. An artillery shell as claimed in claim 24 comprising:a removable casing surrounding the base bleed unit when the fins are in a retracted position.
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