EP0719702B1 - Aileron à volets fixes au bord de fuite pour navires - Google Patents
Aileron à volets fixes au bord de fuite pour navires Download PDFInfo
- Publication number
- EP0719702B1 EP0719702B1 EP95400981A EP95400981A EP0719702B1 EP 0719702 B1 EP0719702 B1 EP 0719702B1 EP 95400981 A EP95400981 A EP 95400981A EP 95400981 A EP95400981 A EP 95400981A EP 0719702 B1 EP0719702 B1 EP 0719702B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flaps
- fin
- aileron
- main fin
- stabilizing device
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
Definitions
- Anti-roll stabilizers for ships with folding fins or not currently known are equipped with fins of which structure can be simple (single fin) or complex (curvature flaps hinged on a main fin simple).
- the force perpendicular to the plane of the fin which produces the stabilizing effect is characterized by a coefficient commonly known as Cz.
- the Cz coefficient varies according to fig. 2 depending on the inclination fin in the water streams.
- the Zo part of the curve corresponds to the corresponding drop zone loss of lift.
- the surface of the fin will be all the smaller as the Cz will be high.
- the surfaces of the fins determine the weights and therefore stabilizer prices.
- they determine what is called the loss of additional buoyancy, i.e. water volumes contained in the hull housings in which are folded the fins in good weather.
- the flap is articulated on the main fin by all known mechanisms (pinions, connecting rods, etc.).
- the Cz is improved but the installation is complex and expensive continuously articulate in seawater.
- This articulation can in certain cases constitute a limit on the surface of the aileron, because the deformations of the aileron during operation due to bending may be incompatible with this joint.
- resistance to the advancement is high and can present as the profile in "fish" a characteristic of abrupt withdrawal. A example of this type of profile is given in fig. 5.
- the invention has the effect of increasing the Cz to a value substantially greater than that of a curved flap profile, while maintaining a simple structure and resistance to advancement less than or at most equal to that of a profile in "fish" or curvature flap and this whatever the average wingspan / rope ratio.
- the stabilization device consists of a main fin with which is associated a or several pairs of fixed and medium camber flaps.
- the profile of the fin presents a relatively flat drop characteristic which allows to easily absorb disturbances in the direction of the water streams due to the residual movement of the ship and at the orbital speed of the swell. Examples of this type of profile are given in figs. 6, 7, 9 and 10 which make appear shutters of known general shape.
- main fin 1 (fig. 6) of known conventional symmetrical profile with which are associated one or more pairs of flaps 2 a and 2 b with fixed arched profiles relative to the main fin and located near the trailing edge F of the main fin, respectively on the lower side 1 a and upper side 1 b of the main fin, the camber of the flaps being opposite and symmetrical.
- FIGS. 6 and 6a an example of a profile comprising a single pair of flaps 2 a , 2 b is described in FIGS. 6 and 6a.
- the flaps 2 a and 2 b are arranged so that the tangents to the leading edge Ta and Tb at their mean profile Pa and Pb are parallel to the mean plane of the main fin, but other arrangements such as oblique tangents can be considered.
- the camber Pa, Pb of the flaps, their distance Xv, Ya, Yb to the main fin and their Cv rope can be adjusted by depending on the speed characteristics of the profile in the ambient environment, of the average immersion of the profile in this environment and acceptable resistance to advancement or predictable.
- the main fin and the flaps can also consist of known conventional profiles or not, symmetrical or not.
- the shutters can be without medium camber.
- the main fin 1 is equipped at its end (opposite side to the vessel N) with a plate 3 which limits the circulation of the ambient fluid between the lower surface 1 a and the upper surface 1 b .
- the shutters 2 a and 2 b are connected fig. 7 to the main fin 1, on the one hand, by the plates 3 and 4 at the end of the main fin and, on the other hand, by spacers 5 a , 5 b , 5 c ... 5 f arranged on along profiles 1, 2 a and 2 b .
- This connection can be made by any known means (welding, bolting, ).
- the spacers 5 a , 5 b , 5 c .. may not exist.
- An axis 6 keyed to the main wing 1 rotates the main fin 1 with his or her flaps 2 pairs and 2b and the plates 3 and 4. This assembly is equivalent to a single fin.
- the wing with fixed shutters described can be used to all the steering and stabilization devices ship movements and generally for any surface and any foldable set or not and this whatever the ratio of wingspan to average chord of the fin. So the fin suitable for any passive system or assembly ( stabilization of rudder, drift, etc.) or active or semi-active and whether it is foldable or not.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Toys (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Vibration Prevention Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fats And Perfumes (AREA)
- Air Bags (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vehicle Body Suspensions (AREA)
- Steroid Compounds (AREA)
- Cookers (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- P
- est la densité du milieu ambiant
- S
- la surface de l'aileron
- V
- la vitesse de déplacement du profil dans le milieu
ambiant
(en général la vitesse du navire équipé des stabilisateurs) (Voir fig. 1).
- Profils simples classiques qui présentent l'avantage d'une structure et d'un mécanisme de commande d'aileron simple. La résistance à l'avancement dans l'eau est faible, mais le Cz faible fait que ce type d'aileron n'est utilisé généralement que pour les ailerons de petites surfaces. Un exemple de profil de ce type est donné aux fig. 1 et 3.
- Profil en "poisson" auquel peut être adjointe une plaque en extrémité d'aileron. Ce profil améliore le Cz mais présente le désavantage d'être générateur de bruits et de vibrations. De plus, la résistance à l'avancement est augmentée. Un exemple de profil de ce type est donné à la fig. 4.
- Profil à volet de courbure. Il s'agit d'un profil comportant un aileron principal en bord de fuite duquel est articulé un volet de courbure. L'articulation est telle qu'à tout angle α de l'aileron principal correspond un angle β du volet.
- les couples de volets fixes sont disposés symétriquement sur les faces intrados et extrados de l'aileron principal auquel ils sont reliés de façon fixe ;
- les couples de volets situés respectivement côtés intrados et extrados de l'aileron principal sont placés vers le bord de fuite dudit aileron principal de façon que les tangentes à leur cambrure moyenne au bord d'attaque ou inclinées soient sensiblement parallèles au plan moyen de l'aileron principal ; d'autres dispositions que tangentes au bord d'attaque parallèle au plan de l'aileron peuvent cependant être envisagées (tangentes inclinées) en fonction des performances.
- l'aileron principal est équipé à ses extrémités de plaques planes sur lesquelles sont fixées les extrémités des couples de volets fixes ;
- la liaison des couples de volets à l'aileron principal est obtenue au moyen des plaques auxquelles peuvent être associées des entretoises ;
- l'ensemble aileron principal volets, plaques et entretoises constitue l'aileron de stabilisation proprement dit et celui-ci est incliné vis à vis des filets d'eau par tout moyen connu à l'aide d'un axe ; l'aileron peut cependant être utilisé comme plan fixe et ne pas être orientable ce qui est le cas de plans stabilisateurs ou amortisseurs passifs.
- le dispositif est mis en oeuvre pour des stabilisateurs de roulis connus de type repliable ou non repliable. L'aileron peut être utilisé pour des dispositions anti-tangage, des dispositifs anti-roulis, des appareils à gouverner, des barres de plongée de sous-marins, tout dispositif de gouverne ou de stabilisation de navire. Ce type d'ailerons peut être utilisé sur tout navire civil (monocoque, multicoque, swath, wave pearcer) ou de plaisance, ou de guerre.
Claims (10)
- Dispositif de stabilisation, caractérisé en ce qu'il est constitué d'un aileron principal (1) auquel est associé au moins un couple de volets fixes (2a et 2b) à courbure moyenne, lesdits volets fixes étant disposés au voisinage du bord de fuite de l'aileron principal et placés symétriquement sur les faces intrados (1a) et extrados (1b) de l'aileron principal, ledit aileron principal étant équipé de plaques d'extrémité (3 et 4) et éventuellement d'entretoises (5a, 5b, 5c, ..., 5f) pour la fixation desdits volets (2a et 2b) à l'aileron principal.
- Dispositif de stabilisation selon la revendication 1, caractérisé en ce que les volets fixes (2a et 2b) constituant au moins un couple de volets sont placés de façon que les tangentes à leur courbure moyenne au bord d'attaque soient parallèles au plan moyen de l'aileron principal (1).
- Dispositif de stabilisation selon la revendication 1, caractérisé en ce que les volets fixes (2a et 2b) constituant au moins un couple de volets sont placés de façon que les tangentes à leur courbure moyenne au bord d'attaque soient obliques par rapport au plan moyen de l'aileron principal (1).
- Dispositif de stabilisation suivant l'une des revendications 1 à 3, caractérisé en ce que les volets fixes sont formés pour constituer plusieurs couples de volets, ceux-ci étant disposés de façon symétrique par rapport au plan moyen de l'aileron principal.
- Dispositif de stabilisation suivant l'une des revendications 1 à 4, caractérisé en ce que les volets fixes sont formés pour constituer plusieurs couples de volets, ceux-ci étant décalés dans le sens du profil de l'aileron principal.
- Dispositif de stabilisation suivant l'une des revendications 1 à 5, caractérisé en ce que l'ensemble aileron principal (1), volets fixes (2a et 2b), plaques d'extrémité (3 et 4) et entretoises (5a, 5b, 5c ... 5f) constitue l'aileron de stabilisation proprement dit et en ce que celui-ci est incliné vis-à-vis des filets d'eau par tout moyen connu à l'aide d'un axe (6).
- Dispositif de stabilisation suivant l'une des revendications 1 à 6, caractérisé en ce qu'il est mis en oeuvre pour des stabilisateurs de roulis connus de type repliable ou non repliable.
- Dispositif de stabilisation suivant l'une des revendications 1 à 7, caractérisé en ce qu'il est mis en oeuvre pour des stabilisateurs de tangage du navire.
- Dispositif de stabilisation suivant l'une des revendications 1 à 8, caractérisé en ce qu'il est mis en oeuvre pour des safrans d'appareils à gouverner du navire.
- Dispositif de stabilisation suivant l'une des revendications 1 à 9, caractérisé en ce qu'il est mis en oeuvre pour des barres de plongée du navire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9415881A FR2728864B1 (fr) | 1994-12-29 | 1994-12-29 | Dispositif de stabilisation a volets au bord de fuite pour stabilisateurs anti-roulis de navire |
| FR9415881 | 1994-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0719702A1 EP0719702A1 (fr) | 1996-07-03 |
| EP0719702B1 true EP0719702B1 (fr) | 2000-01-05 |
Family
ID=9470421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95400981A Expired - Lifetime EP0719702B1 (fr) | 1994-12-29 | 1995-04-28 | Aileron à volets fixes au bord de fuite pour navires |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5588391A (fr) |
| EP (1) | EP0719702B1 (fr) |
| JP (1) | JPH0924893A (fr) |
| KR (1) | KR100412927B1 (fr) |
| AT (1) | ATE188426T1 (fr) |
| DE (1) | DE69514322T2 (fr) |
| DK (1) | DK0719702T3 (fr) |
| ES (1) | ES2144586T3 (fr) |
| FI (1) | FI110421B (fr) |
| FR (1) | FR2728864B1 (fr) |
| GR (1) | GR3033139T3 (fr) |
| NO (1) | NO309080B1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5768945A (en) * | 1996-02-14 | 1998-06-23 | Shimano, Inc. | Extension handle for a bicycle shifting device |
| DE202009010904U1 (de) * | 2009-08-17 | 2010-12-30 | Becker Marine Systems Gmbh & Co. Kg | Tragflügel für Wasserfahrzeuge |
| JP2020172153A (ja) * | 2019-04-09 | 2020-10-22 | ヤマハ発動機株式会社 | 船舶用のトリムタブ、及びトリムタブを備える船舶 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1661114A (en) * | 1917-06-16 | 1928-02-28 | Flettner Anton | Method and device for the steering of ships |
| GB174019A (en) * | 1920-07-07 | 1922-01-09 | Anton Flettner | Improvements in steering devices for ships and the like |
| US2142123A (en) * | 1938-01-05 | 1939-01-03 | Delmer S Fahrney | Extension wing flap |
| US4172574A (en) * | 1976-06-16 | 1979-10-30 | National Research Development Corporation | Fluid stream deflecting members for aircraft bodies or the like |
| GB9100116D0 (en) * | 1991-01-04 | 1991-02-20 | Vickers Plc | Hydrodynamic fin for water-borne craft |
| NL9100048A (nl) * | 1991-01-11 | 1992-08-03 | Scheepswerf Damen B V | Vaartuig, dat is voorzien van stabilisatievinnen. |
-
1994
- 1994-12-29 FR FR9415881A patent/FR2728864B1/fr not_active Expired - Lifetime
-
1995
- 1995-04-28 ES ES95400981T patent/ES2144586T3/es not_active Expired - Lifetime
- 1995-04-28 DK DK95400981T patent/DK0719702T3/da active
- 1995-04-28 DE DE69514322T patent/DE69514322T2/de not_active Expired - Lifetime
- 1995-04-28 AT AT95400981T patent/ATE188426T1/de not_active IP Right Cessation
- 1995-04-28 EP EP95400981A patent/EP0719702B1/fr not_active Expired - Lifetime
- 1995-05-05 NO NO951776A patent/NO309080B1/no not_active IP Right Cessation
- 1995-05-16 FI FI952369A patent/FI110421B/fi not_active IP Right Cessation
- 1995-05-17 US US08/443,404 patent/US5588391A/en not_active Expired - Lifetime
- 1995-05-19 KR KR1019950012497A patent/KR100412927B1/ko not_active Expired - Lifetime
- 1995-07-05 JP JP7169885A patent/JPH0924893A/ja active Pending
-
2000
- 2000-04-04 GR GR20000400832T patent/GR3033139T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US5588391A (en) | 1996-12-31 |
| ES2144586T3 (es) | 2000-06-16 |
| FR2728864A1 (fr) | 1996-07-05 |
| DK0719702T3 (da) | 2000-06-26 |
| JPH0924893A (ja) | 1997-01-28 |
| FR2728864B1 (fr) | 1997-03-14 |
| NO951776L (no) | 1996-01-02 |
| ATE188426T1 (de) | 2000-01-15 |
| KR100412927B1 (ko) | 2004-03-20 |
| FI110421B (fi) | 2003-01-31 |
| FI952369L (fi) | 1996-06-30 |
| NO309080B1 (no) | 2000-12-11 |
| DE69514322D1 (de) | 2000-02-10 |
| DE69514322T2 (de) | 2001-01-25 |
| GR3033139T3 (en) | 2000-08-31 |
| FI952369A0 (fi) | 1995-05-16 |
| NO951776D0 (no) | 1995-05-05 |
| KR960022155A (ko) | 1996-07-18 |
| EP0719702A1 (fr) | 1996-07-03 |
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