EP1524488A1 - Dispositif de déploiement d'une ailette d'un projectile - Google Patents
Dispositif de déploiement d'une ailette d'un projectile Download PDFInfo
- Publication number
- EP1524488A1 EP1524488A1 EP04292220A EP04292220A EP1524488A1 EP 1524488 A1 EP1524488 A1 EP 1524488A1 EP 04292220 A EP04292220 A EP 04292220A EP 04292220 A EP04292220 A EP 04292220A EP 1524488 A1 EP1524488 A1 EP 1524488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- fin
- support
- projectile
- relative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/02—Stabilising arrangements
- F42B10/14—Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel
Definitions
- the technical field of the invention is that of deployable fins carried by the projectiles:
- the projectile fins generally provide a stabilization function. They are grouped at the level a rear part of the projectile to form a tail.
- Some projectiles carry other fins that provide a guiding function. These fins are generally arranged in front of the projectile.
- the fins For reasons of space and to allow the firing from a gun barrel, the fins must be find folded either backwards or forwards the along the projectile or inside it before the shoot.
- Patent FR2623898 thus describes a device for deployment in which the fins are stowed along an outer wall of the projectile.
- Each fin is in a first time driven by a gear motor that makes it rotate about an axis perpendicular to the plane of the fin.
- This deployment mechanism is slow, which is why it is particularly suitable for projectiles such as dispersible submunitions. Moreover, it requires the use of a gear motor for each fin. These motorcycles gearboxes are expensive and they use a volume not negligible inside the projectile. The use of such mechanism is therefore limited to intelligent submunitions in which the geared motors are otherwise indispensable to ensure after deployment a function of piloting.
- the subject of the invention is a device for deployment of a projectile fin having a articulation fixed to the body of a projectile and which authorizes a pivoting movement of the fin according to at least one axis, characterized in that the articulation comprises a fin support pivotally mounted relative to an axis substantially perpendicular to the axis of the projectile, the winglet being linked to the support by a rod whose axis is substantially parallel to the axis of the projectile when the fin is in the folded position and substantially perpendicular to the axis of the projectile when the winglet is in the deployed position, the rod itself rotate relative to the fin support during the movement of tilting of the support, this pivoting of the rod being controlled by a means of training.
- the stem of the fin can be translated relative to the support and the stem also carries a head that is in contact with a first stationary cam profile integral with the projectile body, spring means being interposed between the head and the support so as to control the initial opening of the fin by tilting of the support.
- the head of the fin rod has a substantially perpendicular to the rod and cooperating with a second fixed cam profile integral with the projectile body, arm and second cam profile forming the training means of the pivoting rod, the tilting of the fin support by compared to the body thus also causing the pivoting of the rod relative to the support.
- the second cam profile can be extended by a groove in which the arm will be lodged when the rod will have rotated about 90 °, groove ensuring then the immobilization in rotation of the rod with respect to support.
- the support has at least one helical light in which circulates a pawn secured to the rod and transverse to this one, the pawn and the light forming the medium driving the rod in rotation, the translation of the rod relative to the support thereby causing, by the action of pawn on the light, a rotation of the rod with respect to support.
- the support has a tapping cooperating with a thread made on the stem, threading and tapping forming the medium driving the rod in rotation, the translation of the rod relative to the support thus causing, by the cooperation of threading with tapping, a rotation of the rod relative to the support.
- the head of the stem may have an end that will enter a complementary shape opening when the winglet is in its deployed position, thus ensuring the locking of the deployed blade by relative to the projectile.
- the rod can be attached to the blade at a distance from an axis median, sharing the plane of the winglet in two, so that that the aerodynamic flow received by the fin creates also a couple likely to cause the rod in rotation.
- the fin may carry a cooperating heel in position deployed with a groove.
- Figure 1a shows a partial longitudinal section of a rear part of a projectile 1.
- the cut is made at the level of a deployment device 2 of a fin 3 of stabilization.
- the projectile usually carries between 3 and 8 identical stabilizing fins which each have a identical deployment device.
- the fin 3 is here folded along the body of the 1.
- the plane of the wing is then placed on the along a wall of the projectile and is oriented substantially parallel to the axis 4 of the projectile.
- the outer end 3a of the fin is oriented towards the front part of the projectile (mark AV) one will provide advantageously at this end a device for Shear retention (such as a polyamide ring shown).
- the outer end 3a of the fin can receive a complementary device to initiate the opening of the fin by the effect of the aerodynamic flow, by example a detachable pallet.
- a complementary device to initiate the opening of the fin by the effect of the aerodynamic flow, by example a detachable pallet.
- the device for deploying the fin has a hinge, attached to the body of a projectile, and which includes a mounted fin support 5 tilting relative to a housing 6 secured to the body of the projectile 1.
- the support 5 of the fin 3 can thus switch by relative to a substantially perpendicular axis 7 (in projection) to the axis 4 of the projectile.
- the fin 3 is connected to the support 5 by a rod 8 whose the axis is parallel to the plane of the fin, so substantially parallel to the axis 4 of the projectile when the wing is in folded position.
- the axis of the rod 8 will be substantially perpendicular to the axis of the projectile when the winglet is in position deployed or, depending on stabilization needs, it can be tilted backwards (towards the AR mark) of the projectile of a wedge angle (this angle arrow is usually between 0 ° and 45 °).
- the rod 8 is pivotally mounted relative to the support 5 of the fin 3 and it can also be translated by report to support 5.
- the rod 8 carries at its end an enlarged head 9 which is kept in contact with the housing 6 by a spring 10.
- the spring 10 is mounted on the rod 8 and is interposed between the enlarged head 9 and the support 5.
- the enlarged head 9 has a lateral arm 11, substantially perpendicular to the rod 8, the arm whose function will be described later.
- the housing 6 is housed in a radial cut 13 of the body of the projectile. He is bound by this one by suitable securing means, such as screws represented or a rear flange. If you wish to disengage in rotation the empennage with respect to projectile we can fix the case 6 to a ring that will be rotation free relative to the projectile, by example by means of ball bearings.
- the housing 6 is closed by a cover 6a (FIG. is fixed by screws 12 ( Figure 1a).
- the pivot axis 7 of the support 5 is mounted between the housing 6 and the cover 6a.
- the housing 6 carries a first cam profile 14 concave which drives the tilting of the support 5 of the fin and on which is applied the head 9 by the spring 10.
- This cam will be referred to subsequently as a tipping cam.
- This movement caused by the spring 10 is sufficient to ensure the initial opening of the fin, but it can be reinforced by an aerodynamic pallet attached to the end 3a of the fin.
- the housing 6 also carries a second cam profile Convex, which controls the pivoting of rod 8 the fin, profile on which is applied the arm 11 of the head 9. This cam will be called later cam of pivoting.
- This second cam profile 15 determines the phase of pivoting (start, speed) of the rod 8 relative to support 5 of the fin 3 during the tilting movement of the support 5 relative to the housing 6.
- Figures 2a and 2b show the device in position deployed wing.
- the plane of the fin 3 is thus oriented radially relative to the projectile and the rod 8 carrying the winglet is then substantially perpendicular to the axis 4 of the projectile.
- the fin 3 is locked by its heel 23 arranged at level of the trailing edge and which enters a groove 24 of the housing 6 (see also Figure 3).
- the deployment device shown in the figures shows a wing with a null arrow.
- This inclined abutment would guide the axis of the rod 8 carrying the winglet following the direction 26 which corresponds for the fin 3 to an arrow ⁇ oriented towards the rear (AR) of the projectile.
- the housing 6 has an internal groove 16 which extends the pivoting cam 15.
- the groove 16 is delimited by the cover 6a, by a wall 6b of the housing parallel to the cover 6a and the first cam profile 14.
- the arm 11 of the head 9 is housed in this groove 16 after deployment of the fin 3 (see Figure 2a and 2b).
- the groove 16 thus ensures immobilization in rotation of the rod 8 relative to the support 5.
- groove 16 which is also delimited by the profile of the tilting cam 14, extends to the end of the latter through an opening 17 (see FIG. 1a).
- the head 9 of the rod 8 is introduced into this opening 17 which has a appropriate diameter (see Figure 2a).
- the opening 17 ensures thus locking the fin 3 in its position deployed in relation to the projectile 1.
- the depth of the opening 17 also makes it possible to adjust the final position in height of the fin 3 relative to the projectile body 1.
- the rod 8 is fixed to the fin 3 at a distance D a median axis 18 sharing the plane of the fin in two.
- This deployment device occupies an internal volume reduced in the body of the projectile.
- the planes of the fins remain outside the body.
- the fin housing can be adjusted to the dimensions of the fins, these are then properly held in place during the cannon and protected from attacks of propellant gases.
- FIG. 5 thus shows another mode realization that differs from the previous one in that the head 9 extending the rod 8 of the fin 3 is devoid of arms 11.
- the housing 6 does not have a second convex cam profile 15.
- the tilting principle of the fin is unchanged by against the pivoting of the fin is provided by a means different training.
- the means of training is here constituted by a pin 20 integral with the rod 8 and transverse to it.
- This pawn 20 circulates in a light 21 arranged in the support 5 and having a helical profile.
- the translation of the rod 8 relative to the support 5 therefore also causes a rotation of the rod relative 5. Indeed, the rod 8 can only translate in following the helical profile 21 which guides the pin 20.
- the pitch of the propeller will be easily chosen by the Man of the Craft such that the rod rotates 90 ° relative to support 5 when the latter has itself rotated 90 ° by in relation to its axis 7.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Massaging Devices (AREA)
- Tents Or Canopies (AREA)
- Jib Cranes (AREA)
- Amplifiers (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- les figures 1a et 1b représentent un mode de réalisation du dispositif selon l'invention en position ailette repliée, la figure 1a étant une coupe partielle du projectile réalisée au niveau d'une ailette et la figure 1b étant une coupe partielle transversale réalisée suivant le plan dont la trace AA est visible sur la figure 1a,
- les figures 2a et 2b sont des vues du même dispositif en position ailette déployée, la figure 2b étant une coupe partielle transversale réalisée suivant le plan dont la trace BB est visible sur la figure 2a,
- la figure 3 est une vue en éclaté du montage de ce dispositif,
- la figure 4 est une vue en perspective du boítier portant les profils de came,
- la figure 5 est une vue partielle, ailette repliée, d'une variante de réalisation du dispositif selon l'invention,
- la figure 6 est une vue partielle ailette repliée d'une autre variante de réalisation du dispositif selon l'invention.
Claims (9)
- Dispositif de déploiement (2) d'une ailette (3) de projectile comportant une articulation fixée au corps d'un projectile (1) et qui autorise un mouvement de pivotement de l'ailette (3) suivant au moins un axe, dispositif caractérisé en ce que l'articulation comprend un support (5) d'ailette monté basculant par rapport à un axe (7) sensiblement perpendiculaire à l'axe (4) du projectile, l'ailette (3) étant liée au support (5) par une tige (8) dont l'axe est sensiblement parallèle à l'axe (4) du projectile lorsque l'ailette (3) est en position repliée et sensiblement perpendiculaire à l'axe (4) du projectile lorsque l'ailette se trouve en position déployée, la tige (8) pouvant elle-même pivoter par rapport au support (5) d'ailette lors du mouvement de basculement du support, ce pivotement de la tige (8) étant commandé par un moyen d'entraínement.
- Dispositif de déploiement selon la revendication 1, caractérisé en ce que la tige (8) de l'ailette (3) peut se translater par rapport au support (5) et en ce que la tige (8) porte une tête (9) qui est en contact avec un premier profil de came (14) fixe solidaire du corps de projectile (1), un moyen ressort (10) étant interposé entre la tête (9) et le support (5) de façon à commander l'ouverture initiale de l'ailette (3) par basculement du support (5).'
- Dispositif de déploiement selon la revendication 2, caractérisé en ce que la tête (9) de la tige (8) de l'ailette (3) comporte un bras (11) sensiblement perpendiculaire à la tige (8) et coopérant avec un deuxième profil de came (15) fixe solidaire du corps de projectile (1), bras (11) et deuxième profil de came (15) formant le moyen d'entraínement de la tige (8) en pivotement, le basculement du support (5) d'ailette par rapport au corps entraínant ainsi également le pivotement de la tige (8) par rapport au support (5).
- Dispositif de déploiement selon la revendication 3, caractérisé en ce que le deuxième profil de came (15) est prolongé par une rainure (16) dans laquelle se loge le bras (11) lorsque la tige (8) a pivoté d'environ 90°, rainure assurant alors l'immobilisation en rotation de la tige (8) par rapport au support (5).
- Dispositif de déploiement selon la revendication 2, caractérisé en ce que le support (5) comporte au moins une lumière hélicoïdale (21) dans laquelle circule un pion (20) solidaire de la tige (8) et transversal à celle ci, le pion (20) et la lumière (21) formant le moyen d'entraínement de la tige (8) en pivotement, la translation de la tige par rapport au support provoquant ainsi, par l'action du pion sur la lumière, une rotation de la tige (8) par rapport au support (5).
- Dispositif de déploiement selon la revendication 2, caractérisé en ce que le support (5) comporte un taraudage (23) coopérant avec un filetage (22) réalisé sur la tige (8), filetage (22) et taraudage (23) formant le moyen d'entraínement de la tige (8) en pivotement, la translation de la tige (8) par rapport au support provoquant ainsi, par la coopération du filetage (22) avec le taraudage (23), une rotation de la tige (8) par rapport au support (5).
- Dispositif de déploiement selon une des revendications 2 à 6, caractérisé en ce que la tête (9) de la tige (8) comporte une extrémité qui s'introduit dans une ouverture (17) de forme complémentaire lorsque l'ailette (3) se trouve dans sa position déployée, assurant ainsi le verrouillage de l'ailette (3) déployée par rapport au projectile (1).
- Dispositif de déploiement selon une des revendications 1 à 7, caractérisé en ce que la tige (8) est fixée à l'ailette (3) à distance (D) d'un axe médian (18) partageant le plan de l'ailette (3) en deux, de façon à ce que l'écoulement aérodynamique reçu par l'ailette (3) crée également un couple susceptible d'entraíner la tige (8) en rotation.
- Dispositif de déploiement selon une des revendications 1 à 8, caractérisé en ce que l'ailette (3) porte un talon (23) coopérant en position déployée avec une rainure (24).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0311642A FR2860577B1 (fr) | 2003-10-06 | 2003-10-06 | Dispositif de deploiement d'une ailette d'un projectile |
FR0311642 | 2003-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1524488A1 true EP1524488A1 (fr) | 2005-04-20 |
EP1524488B1 EP1524488B1 (fr) | 2008-07-23 |
Family
ID=34307425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04292220A Expired - Lifetime EP1524488B1 (fr) | 2003-10-06 | 2004-09-16 | Dispositif de déploiement d'une ailette d'un projectile |
Country Status (6)
Country | Link |
---|---|
US (1) | US7059561B2 (fr) |
EP (1) | EP1524488B1 (fr) |
AT (1) | ATE402389T1 (fr) |
DE (1) | DE602004015221D1 (fr) |
FR (1) | FR2860577B1 (fr) |
IL (1) | IL164293A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2949848A1 (fr) * | 2009-09-10 | 2011-03-11 | Nexter Munitions | Dispositif d'ouverture et verrouillage d'une ailette canard. |
WO2018015838A1 (fr) | 2016-07-21 | 2018-01-25 | Chairman, Defence Research &Development Organisation (Drdo) | Mécanisme de dépliage d'aile bidirectionnelle |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7642492B2 (en) * | 2005-01-26 | 2010-01-05 | Raytheon Company | Single-axis fin deployment system |
FR2895071B1 (fr) | 2005-12-19 | 2008-01-18 | Giat Ind Sa | Dispositif de verrouillage anti-rebond d'une ailette deployable d'un projectile. |
US7856929B2 (en) | 2007-06-29 | 2010-12-28 | Taser International, Inc. | Systems and methods for deploying an electrode using torsion |
US8754352B2 (en) * | 2010-04-07 | 2014-06-17 | Bae Systems Information And Electronic Systems Integration Inc. | Compression spring wing deployment initiator |
FR3041744B1 (fr) * | 2015-09-29 | 2018-08-17 | Nexter Munitions | Projectile d'artillerie ayant une phase pilotee. |
CN106927017B (zh) * | 2017-03-29 | 2023-12-12 | 河北全疆科技有限公司 | 一种多旋翼无人机机臂折叠机构 |
EP3403922A1 (fr) * | 2017-05-18 | 2018-11-21 | Airbus Operations GmbH | Agencement d'une aile pour un aéronef |
US11300390B1 (en) * | 2018-03-05 | 2022-04-12 | Dynamic Structures And Materials, Llc | Control surface deployment apparatus and method of use |
US11067371B2 (en) * | 2019-03-22 | 2021-07-20 | Bae Systems Information And Electronic Systems Integration Inc. | Trimmable tail kit rudder |
DE102020105188B4 (de) * | 2020-02-27 | 2023-08-31 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Flugkörper-Finnenausklappeinrichtung, Flugkörper und Verfahren zum Betrieb eines Flugkörpers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3010027A1 (de) * | 1978-09-26 | 1981-09-24 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Schwenkbare anordnung eines leitwerks, insbesondere bei flugkoerpern oder geschossen |
US4728058A (en) * | 1985-03-05 | 1988-03-01 | Diehl Gmbh & Co. | Airborne body with over-caliber sized guidance mechanism |
US5584448A (en) * | 1993-12-02 | 1996-12-17 | State Of Israel Ministry Of Defense, Rafael Armaments Development Authority | Flight control device |
US5762294A (en) * | 1997-03-31 | 1998-06-09 | The United States Of America As Represented By The Secretary Of The Army | Wing deployment device |
FR2797946A1 (fr) * | 1999-08-31 | 2001-03-02 | Aerospatiale Matra Missiles | Dispositif de montage d'un appendice rigide sur un engin apte a etre lance depuis le tube, et engin correspondant |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3063375A (en) * | 1960-05-19 | 1962-11-13 | Wilbur W Hawley | Folding fin |
US4323208A (en) * | 1980-02-01 | 1982-04-06 | British Aerospace | Folding fins |
US4664339A (en) * | 1984-10-11 | 1987-05-12 | The Boeing Company | Missile appendage deployment mechanism |
US4869442A (en) * | 1988-09-02 | 1989-09-26 | Aerojet-General Corporation | Self-deploying airfoil |
US5480111A (en) * | 1994-05-13 | 1996-01-02 | Hughes Missile Systems Company | Missile with deployable control fins |
US6761331B2 (en) * | 2002-03-19 | 2004-07-13 | Raytheon Company | Missile having deployment mechanism for stowable fins |
-
2003
- 2003-10-06 FR FR0311642A patent/FR2860577B1/fr not_active Expired - Fee Related
-
2004
- 2004-09-16 AT AT04292220T patent/ATE402389T1/de not_active IP Right Cessation
- 2004-09-16 DE DE602004015221T patent/DE602004015221D1/de not_active Expired - Lifetime
- 2004-09-16 EP EP04292220A patent/EP1524488B1/fr not_active Expired - Lifetime
- 2004-09-27 IL IL164293A patent/IL164293A/en active IP Right Grant
- 2004-09-28 US US10/950,502 patent/US7059561B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3010027A1 (de) * | 1978-09-26 | 1981-09-24 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Schwenkbare anordnung eines leitwerks, insbesondere bei flugkoerpern oder geschossen |
US4728058A (en) * | 1985-03-05 | 1988-03-01 | Diehl Gmbh & Co. | Airborne body with over-caliber sized guidance mechanism |
US5584448A (en) * | 1993-12-02 | 1996-12-17 | State Of Israel Ministry Of Defense, Rafael Armaments Development Authority | Flight control device |
US5762294A (en) * | 1997-03-31 | 1998-06-09 | The United States Of America As Represented By The Secretary Of The Army | Wing deployment device |
FR2797946A1 (fr) * | 1999-08-31 | 2001-03-02 | Aerospatiale Matra Missiles | Dispositif de montage d'un appendice rigide sur un engin apte a etre lance depuis le tube, et engin correspondant |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2949848A1 (fr) * | 2009-09-10 | 2011-03-11 | Nexter Munitions | Dispositif d'ouverture et verrouillage d'une ailette canard. |
EP2295928A1 (fr) * | 2009-09-10 | 2011-03-16 | Nexter Munitions | Dispositif d'ouverture et verrouillage d'une ailette de canard |
WO2018015838A1 (fr) | 2016-07-21 | 2018-01-25 | Chairman, Defence Research &Development Organisation (Drdo) | Mécanisme de dépliage d'aile bidirectionnelle |
EP3488176A4 (fr) * | 2016-07-21 | 2020-07-29 | Chairman, Defence Research & Development Organisation (DRDO) | Mécanisme de dépliage d'aile bidirectionnelle |
Also Published As
Publication number | Publication date |
---|---|
DE602004015221D1 (de) | 2008-09-04 |
EP1524488B1 (fr) | 2008-07-23 |
IL164293A0 (en) | 2005-12-18 |
IL164293A (en) | 2012-02-29 |
ATE402389T1 (de) | 2008-08-15 |
FR2860577A1 (fr) | 2005-04-08 |
US20050082420A1 (en) | 2005-04-21 |
FR2860577B1 (fr) | 2006-01-27 |
US7059561B2 (en) | 2006-06-13 |
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