IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0312667
(2001-06-13)
|
우선권정보 |
SE-0002487 (2000-07-03) |
국제출원번호 |
PCT/SE01/01332
(2003-07-14)
|
§371/§102 date |
20030714
(20030714)
|
국제공개번호 |
WO02/06760
(2002-01-24)
|
발명자
/ 주소 |
- Johnsson, Stig
- Hellman, Ulf
- Holmqvist, Ulf
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
5 |
초록
▼
The present invention relates to a fin-stabilized artillery shell (1) comprising a body part (8, 26, 36) which can be axially displaced rearwards, in the direction of flight of the shell, once the latter has left the barrel from which it has been fired, and which in the original position is fully re
The present invention relates to a fin-stabilized artillery shell (1) comprising a body part (8, 26, 36) which can be axially displaced rearwards, in the direction of flight of the shell, once the latter has left the barrel from which it has been fired, and which in the original position is fully retracted in the shell (1), and in which a number of deployable fins (18, 24, 29-30, 42-47) are in turn secured, and from which the fins are automatically deployed as soon as the body part has reached its rear position in which it is locked relative to the rest of the shell. One of the advantages of the invention is that in the flight position it gives the shell a greater length than is permitted by the charging position of the artillery piece launching the shell. This gives the shell considerably better stability in its trajectory towards the target. The invention also includes different embodiments of the body part (8, 26, 36) which can be tubular (8) or cylinder-shaped (26) and accommodate different types of fins (18-24, 29-30, 42-47) and also in certain configurations a built-in base-bleed unit (3). The body part can also be divided into two parts (27, 34 and 37, 38) which rotate freely relative to each other and which allow the fins (18-24, 29-30, 42-47) to spin freely relative to the rest of the shell (1) which has been shown to make the latter more easily manoeuvred without impairing its directional stability.
대표청구항
▼
1. A fin-stabilized artillery shell, comprising:a shell body; a body part mounted in an annular space in a rear of the shell body, the body part having a plurality of stabilizing fins; and an expansion chamber between a front part of the shell and the body part where gas expansion takes place; and a
1. A fin-stabilized artillery shell, comprising:a shell body; a body part mounted in an annular space in a rear of the shell body, the body part having a plurality of stabilizing fins; and an expansion chamber between a front part of the shell and the body part where gas expansion takes place; and at least one channel connecting the expansion chamber to the annular space, wherein the body part is axially displaceable from a space in the rear of the shell body from a first position to a second outer position that extends the length of the shell rearward, the body part is tubular and fits in the annular space when the body part is in the first position, the fins are deployable when the body part is in the second outer position, and the gas expansion comes from a charge, wherein the gas expansion displaces the body part from the first position to the second position. 2. The fin-stabilized artillery shell of claim 1, wherein the body part comprises:a track mounted in the annular space when the body part is in its first position, wherein the plurality of fins are pivotably mounted to the track by axles, wherein the annular space extends forward in the shell body to accommodate substantially the whole of the body part and the fins when the body part is in the first position. 3. The fin-stabilized artillery shell of claim 1, wherein the rear of the shell body houses a powder charge and a gas outlet for the powder charge.4. The fin-stabilized artillery shell of claim 1, wherein the plurality of fins are pivotably mounted about a periphery of the body part.5. The fin-stabilized artillery shell of claim 1, comprising:a pyrotechnic charge in the expansion space. 6. The fin-stabilized artillery shell of claim 1, wherein the fins are mounted on axles arranged along a longitudinal direction of the shell and are incurved transversely and wrapped around the body part when the body part is in the first position and wherein the fins are deployable radially outward from the body part.7. A fin-stabilized artillery shell, comprising:a shell body; a body part mounted in a space in a rear of the shell body, the body part having a plurality of stabilizing fins and comprising a first section and a second section rotatably connected to the first section, wherein the fins are mounted to the first section; and an expansion chamber between a front part of the shell and the body part where gas expansion takes place, wherein the body part is axially displaceable from a space in the rear of the shell body from a first position to a second outer position that extends the length of the shell rearward, the fins are deployable when the body part is in the second outer position, the gas expansion displaces the body part from the first position to the second position, a deformable inner edge of the first section deforms and engages an edge of the second section when the body part is in the second position. 8. The fin-stabilized artillery shell of claim 7, wherein the first section is rotatably mounted to the second section by a ball bearing.9. The fin-stabilized artillery shell of claim 7, wherein the first section houses a powder charge and a gas outlet for the powder charge.10. The fin-stabilized artillery shell of claim 7, wherein the fins are mounted about axes of rotation extending transverse to a width direction of the fins.11. The fin-stabilized artillery shell of claim 7, wherein the fins are folded forwards and inwards about axes of rotation in grooves extending in a longitudinal direction of the shell when the body part is in the first position, and wherein the fins execute a rotational movement of at least 90° about said axes outwards and rearwards in the direction of flight of the shell.12. The fin-stabilized artillery shell of claim 7, comprising:canard fins at a front part of the shell that are deployable substantially simultaneously with the deployment of the plurality of fins. 13. The fin-stabilized artillery shell of claim 7, wherein the space is cylinder-shaped and the fins are secured along the outer periphery of the body part in the space, and comprising: a base-bleed unit having a powder chamber containing a slow-burning powder, an igniter which initiates the powder, and a gas outlet arranged at a rear plane of the cylinder-shaped body part.14. The fin-stabilized artillery shell of claim 7, wherein an axis of rotation of the first section with respect to the second section coincides with a longitudinal axis of the shell, and the first section is locked relative to the shell body when the body part is in the second position.15. The fin-stabilized artillery shell of claim 7, wherein the plurality of fins are pivotably mounted about a periphery of the body part.16. A fin-stabilized artillery shell, comprising:a shell body; a body part mounted in a space in a rear of the shell body, the body part having a plurality of stabilizing fins, a base-bleed charge located therein and a gas outlet; an expansion chamber between a front part of the shell and the body part where gas expansion takes place; and pyrotechnic means in the expansion chamber for generating the gas expansion and initiating the base-bleed charge, wherein the body part is axially displaceable from a space in the rear of the shell body from a first position to a second outer position that extends the length of the shell rearward, the fins are deployable when the body part is in the second outer position, and the gas expansion displaces the body part from the first position to the second position before initiating the base-bleed charge. 17. The fin-stabilized artillery shell of claim 16, wherein the body part comprises a first section and a second section rotatably connected to the first section, wherein the fins are mounted to the first section.
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