EP 0754618 A1 19970122 - Pitch reducing device for ships
Title (en)
Pitch reducing device for ships
Title (de)
Stabilisierungsgerät zur Verminderung des Stampfens eines Schiffes
Title (fr)
Dispositif de stabilisation anti-tangage pour navire
Publication
Application
Priority
FR 9508856 A 19950721
Abstract (en)
The stabiliser includes hydroplanes (2a, 2b) which project on horizontal, or downward inclined axes from bearings mounted in the submerged bow bulb. To control pitching only, a controller, reacting to sensor signals, applies common angles of incidence via a hydraulic or electrical actuator. The surfaces are e.g mounted on the same transverse shaft. The equipment may additionally counteract rolling, with independently operated control surfaces given opposing angles of incidence. The bulb compartment (3) can be divided centrally, with hydroplane assemblies swivelling on vertical axes (ZZ') independently retractable in fair weather or for berthing (2b). On striking a submerged obstacle, an assembly, latched (13a, 14a, 15a) when extended, is freed (13b, 14b, 15b) and retracts (12b). Single or paired auxiliary trailing edge surfaces (6) optimise water flow and thrust.
Abstract (fr)
Dispositif de stabilisation anti-tangage pour navire, caractérisé en ce qu'il comporte deux ensembles d'ailerons (1a, 1b) disposés à la partie avant immergée de la coque (4) de part et d'autre d'un caisson (3) formant un bulbe, en ce que les ensembles d'ailerons sont portés par des axes ou mèches d'orientation (5, 5a) et en ce que les ailerons sont inclinés à partir de consignes d'asservissement (θ1,θ2) élaborées dans un calculateur (16) à partir d'informations provenant de capteurs (17, 18, 19 ...) pris parmi des capteurs de vitesse angulaire de tangage, de roulis, d'accélération verticale ou de mesure d'incidence des filets d'eau. <IMAGE>
IPC 1-7
IPC 8 full level
B63B 39/06 (2006.01)
CPC (source: EP)
B63B 39/06 (2013.01)
Citation (search report)
- [XP] US 5511504 A 19960430 - MARTIN JOHN R [US]
- [XY] US 5033694 A 19910723 - SATO HIROSHI [JP]
- [XY] US 1800365 A 19310414 - SPERRY ELMER A
- [Y] GB 825134 A 19591209 - LICENTIA GMBH
- [Y] US 5235926 A 19930817 - JONES EARL R [US]
- [A] US 4776294 A 19881011 - CHILDS JOHN M [US]
- [A] WO 9212046 A1 19920723 - VICKERS PLC [GB]
- [A] DE 2013048 A1 19711104 - LICENTIA GMBH
- [A] GB 999306 A 19650721 - SIEMENS AG
- [A] GB 799795 A 19580813 - MUIRHEAD & CO LTD
- [A] GB 881681 A 19611108 - WILLIAM VANDERSTEEL
- [A] "Bow fin reduce ship's pitching motion", PRODUCT ENGINEERING, March 1957 (1957-03-01), pages 207 - 208, XP002000243
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0754618 A1 19970122; FR 2736888 A1 19970124; FR 2736888 B1 19970926
DOCDB simple family (application)
EP 96401562 A 19960715; FR 9508856 A 19950721