EP2277772B1 - Düsenpropeller für Schiffe - Google Patents

Düsenpropeller für Schiffe Download PDF

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Publication number
EP2277772B1
EP2277772B1 EP10170015A EP10170015A EP2277772B1 EP 2277772 B1 EP2277772 B1 EP 2277772B1 EP 10170015 A EP10170015 A EP 10170015A EP 10170015 A EP10170015 A EP 10170015A EP 2277772 B1 EP2277772 B1 EP 2277772B1
Authority
EP
European Patent Office
Prior art keywords
propeller
fins
nozzle
fin
ducted
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.)
Not-in-force
Application number
EP10170015A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2277772A1 (de
Inventor
Mathias Kluge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Becker Marine Systems GmbH and Co KG
Original Assignee
Becker Marine Systems GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Becker Marine Systems GmbH and Co KG filed Critical Becker Marine Systems GmbH and Co KG
Priority to PL10170015T priority Critical patent/PL2277772T3/pl
Priority to JP2010162950A priority patent/JP2011025918A/ja
Priority to KR1020100071482A priority patent/KR101421319B1/ko
Priority to SG201005346-0A priority patent/SG168500A1/en
Publication of EP2277772A1 publication Critical patent/EP2277772A1/de
Application granted granted Critical
Publication of EP2277772B1 publication Critical patent/EP2277772B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
    • B63H5/15—Nozzles, e.g. Kort-type

Definitions

  • the invention relates to a nozzle propeller for ships, in particular for offshore vehicles, tractors and inland vessels, or ships in which according to the prior art, a nozzle enclosing the propeller makes sense, with a fin system and a fixed, non-rotatable nozzle.
  • Such jet propellers also have a fixed propeller, colloquially also called “ship's propeller", surrounded by the nozzle.
  • a nozzle propeller drive units of watercraft in particular of ships, referred to, which include a propeller, which is surrounded by a nozzle, which is designed as a nozzle ring, or sheathed.
  • nozzle rings are also called “Kortdüsen”.
  • the arranged inside the nozzle propeller is fixed.
  • jet propellers in the prior art in which the nozzle surrounding the propeller is designed to be stationary.
  • an additional maneuvering arrangement in particular a rudder, in the propeller effluent, d. H. Seen in the direction of ship behind the jet propeller, be arranged.
  • jet propellers are also known in the prior art, in which the nozzle is rotatable about the arranged inside the fixed propeller. Such rotatable nozzle propellers can be used to control the vessel, so that additional maneuvering facilities, such as rudders, may be omitted.
  • the present invention relates to fixed nozzle jet propellers only and not to rotary die nozzles.
  • the nozzle or the nozzle ring has the function to increase the thrust of the drive.
  • nozzle propellers are also common in tugs, supply vessels, u. Like. Used, each of which must apply a high thrust.
  • the nozzle designed as a nozzle ring is normally a tapered tube which forms the wall of the nozzle.
  • two fins attached to the nozzle and projecting into the nozzle interior, opposite and viewed in a cross-sectional view are each provided on a vertical center axis of the nozzle propeller in front of the propeller.
  • DD 267 383 A3 is a guide for influencing the inflow in single and multi-screw inline ships known. Shown is a single relatively large pre-fin fin arrangement disposed below the propeller axis and vertically aligned, and two existing rocker arms. Described is an inclination angle of an entry edge of the guide surface of at least 20 ° relative to the clamping plane.
  • the single guide surface generates in essential areas of the propeller circular area in the inflow of a circumferential component opposite to its direction of rotation as Vordrall in front of the propeller, whereby the propeller works energetically cheaper and is loaded more evenly during its rotation.
  • Out FR 1 364 903 A is known a cylindrical casing, which sheathed the propeller and is attached via radial mounting arms on the stern tube.
  • a fin system which has more fins on the propeller-contacting side than on the propeller-deflecting side.
  • the fins are shorter than the propeller blades.
  • the invention has for its object to provide a nozzle propeller of the type mentioned, which allows compared to the known jet propellers increased speeds or increased Trossenrat the same engine performance. Furthermore, it should be achieved that more water is streamlined directed to the entire propeller, whereby fuel is saved at the same power of the machine.
  • the fin system comprises one or more (pre-whirl) guide fins, which are arranged in the direction of the propeller flow in front of the propeller and such that more fins are arranged on the propellerauf filedden side of the nozzle propeller as on the propeller ab toden side of the jet propeller.
  • the invention is based on the recognition that a (pre-whirl) fin system for jet propellers, in particular for Kortdüsen, to increase the Trossenzuges is particularly favorable, namely in the aforementioned arrangement of the fins. Due to this arrangement of the fins of the fin system, an increase of the tugger train by 10% or a power saving of up to 10% is achieved.
  • propeller-impacting side of the nozzle propeller is understood to mean that side of the nozzle propeller in which, in a cross-sectional view, the propeller rotates from the bottom to the top during forward travel. Accordingly, the propeller turns on the propeller off-striking side from top to bottom.
  • the propeller-upturned and deflecting sides are separated by an imaginary inner vertical line seen in a cross-sectional view.
  • the guide vanes forming the fin system are flow guide surfaces in the sense of stators, which are arranged on the nozzle propeller and influence the propeller inflow.
  • the fins are normally fixedly arranged on the nozzle propeller.
  • the one Fin fin is to be placed completely on the propeller-facing side in this minimal fin system.
  • Guide fins which are exactly between the propeller-impacting and -ab toden side, ie arranged with respect to their longitudinal axis on the vertical center line of the nozzle propeller, according to the invention either to neither of the two sides (propellerab wayde and -auf tode side) or counted on both sides. If a fin is possibly arranged so that it is not completely arranged but with a predominant portion on one side, it is attributed to the purposes of the present invention this page.
  • the fins or fins are to be distinguished from pure nozzle propeller protection devices, such as protective grille o. The like., Which should only prevent objects from entering the nozzle propeller.
  • vanes or fins are flow guide surfaces that significantly influence the flow.
  • the fin fins forming the fin system are arranged in the region of the nozzle propeller.
  • the guide fins are at least partially disposed within the nozzle of the nozzle propeller.
  • the invention has the advantage that increased speeds or taut trains are possible with the same engine power. This results in increased efficiency.
  • pre-swirl by the fin system also results in a higher overall efficiency of the system propeller-nozzle vanes.
  • the invention can be used at low water depth and also provides protection of the propeller from damage by foreign bodies.
  • the guide fins of the fin system can be arranged such that they form an asymmetric fin system.
  • an asymmetry refers to an angular arrangement of the guide fins directed with respect to the shaft axis and / or their dimensioning, such as profile length, profile cross-section or another size.
  • an unequal angular pitch between the axes of the individual guide vanes in the radial direction as viewed from the propeller axis arises.
  • an asymmetrical arrangement may be present when, in a cross-sectional view of the nozzle propeller, the vertical center axis of the nozzle propeller is used as the axis of symmetry.
  • This symmetry axis simultaneously separates the up and down side of the jet propeller. This results in a particularly effective fin system in an easy way to be formed and arranged. In most cases, a fin system in which more fins are located on the propeller-contacting side than on the propeller-deflecting side will also be asymmetric.
  • each guide fin forms a stator which is fastened at its one end to an inner wall surface of the nozzle and at its other end to the stern tube or the shaft bearing.
  • the shaft bearing is designed to support the propeller shaft and is expediently arranged in the vicinity of the propeller.
  • the shaft bearing can be formed for example by the so-called "sterntube”.
  • the guide fins are each formed as a fixed stator, which lies between the shaft bearing and the nozzle inner wall.
  • the connection with the shaft bearing or with the nozzle can be made by any known from the prior art and suitable connection technology, in particular by welding. Alternatively or in addition to the attachment to the nozzle inner wall surface may also be provided an attachment to the nozzle end face.
  • the fin or the guide fin is arranged completely inside the nozzle propeller or the nozzle.
  • a section of the guide fin could also be arranged outside the interior of the nozzle, attempts by the applicant have shown that, in most application situations, a complete arrangement of the guide fins within the space enclosed by the nozzle is to be preferred in terms of flow
  • the fin system can in principle at least comprise only one guide fin, which is then arranged completely on the propeller-impacting side. Conveniently, however, each system should have at least three fins. Of these, then advantageously at least two vanes are arranged in the propellerauf filedden page.
  • a preferred embodiment of the invention is that the fin system comprises three to seven vanes, wherein two to four vanes are arranged on the propellerauf filedden side and one to three vanes can be arranged on the propeller ab toden side.
  • each fin has an outwardly curved suction side and a pressure side which is flat over a wide range. This results in a classic buoyancy profile, as used for example in aircraft wings of the application.
  • vanes also allows different cross-sectional shapes of the vanes. This allows the flow within the nozzle to be further optimized.
  • the guide fins are arranged with a different angle of attack to the propeller axis.
  • optimization of a pre-twist is possible.
  • the invention is applicable to single-propeller systems.
  • the application is particularly advantageous in multi-propeller systems.
  • multi-propeller systems include two juxtaposed nozzle propellers, which have an opposite direction of rotation. Accordingly, the fin systems of the two nozzle propellers are then arranged mirror-symmetrically to each other.
  • Wellenbockarme are present, which are designed so that they are used for Vordrallerzeugung. This achieves a further propulsion improvement.
  • Wellenbockarme are usually designed to hold the stern tube or the nozzle propeller and firmly connected to the hull.
  • the present embodiment can at least a portion of the Wellenbockarmes, in particular such a portion which is arranged in a view in the flow direction within the nozzle, formed as a guide surface according to the present invention.
  • the remaining portion of the Wellenbockarmes may be designed differently and also, for example, have a different profile.
  • the Wellenbockarm can also be consistently profiled and provided with a same angle of attack with respect to the propeller axis.
  • the structure of the present invention is further simplified, since the shaft bracket arms provided anyway for holding the nozzle propeller are used as guide surfaces.
  • nozzle propeller according to the invention for offshore vehicles, tractors or inland vessels.
  • two adjacent nozzles are preferably arranged in the rear area.
  • jet propellers for inland vessels mainly jet propellers are used, so that the invention is also suitable for this purpose.
  • Fig. 1 shows a jet propeller 100 for ships, in particular for a barge or a tug.
  • the nozzle propeller 100 is provided with a fin system explained in more detail below and a fixed nozzle 10, wherein the nozzle is designed as a so-called Kortdüse to increase the Trossenzuges.
  • Kortdüse is known for example from US 2, 139, 594 per se and is therefore not explained in detail.
  • the presentation Fig. 1 shows a sectional view through the nozzle propeller 100 in the longitudinal direction (longitudinal section). For the sake of clarity, only an upper half of the nozzle propeller arrangement is shown.
  • the nozzle propeller 100 comprises a screw or a propeller 12 and is mounted with its propeller shaft 11 on a shaft bearing 13, which is designed as a stern tube.
  • a fin 14 is in Fig. 1 shown. This has the task of creating a pre-twist on the propeller 12, so that it is referred to as (pre-whirling) fin 14 and Fin.
  • the term "fin” or “guide surface” is also used for "fin”. Also a designation as "Nozzle Pre Swirl Fin” is possible.
  • the propeller 12 may also be referred to as a "propeller”.
  • the (predrirl) guide fins 14 are arranged in the flow direction in front of the propeller 12.
  • the (pre-twist) fin 14 forms a stator and is therefore fixedly arranged on the nozzle propeller.
  • the (pre-twist) fin 14 is fixed with its one end 15 on the inner wall surface of the nozzle 10 and with its other end 16 on the shaft bearing 13, such as Fig. 1 illustrated.
  • Fig. 1 how the (pre-twist) fin 14 extends with a first portion 14a in an inner space of the nozzle and protrudes with a second portion 14b from the nozzle 10.
  • the fin 14 has a substantially vertical inner edge that defines the inner portion 14a closes and an obliquely extending from top to bottom outward outer edge, which closes the outside, ie outside the nozzle 10, lying portion 14b, and comes in its upper region on the end face of the nozzle 10 for conditioning.
  • the fin 14 is oriented such that its broad side extends approximately in the propeller flow direction or in the direction of the propeller axis 11, so that essentially the front narrow side of the fin 14 is placed in the flow.
  • the two flat sides of the fin 14 are more or less placed in the flow.
  • a nozzle propeller 100 is provided with a fin system with a plurality, namely three (pre-whirl) guide fins 17a, 18a, 19a, for a side A.
  • a fin system with a plurality, namely three (pre-whirl) guide fins 17a, 18a, 19a, for a side A.
  • three (pre-whirl) guide fins 17b, 18b, 19b are also provided in another nozzle propeller 100.
  • the system is designed as a two-propeller system and thus falls into the group of multi-propeller systems.
  • the three guide fins 17a, 18a, 19a are arranged such that two guide fins 17a, 18a are arranged on the propeller-contacting 28 and a guide fin 19a on the propeller-deflecting side 29.
  • Both in the nozzle propeller on page A and on the side B is provided with an arrow 33, which indicates the respective direction of rotation of the nozzle propeller or the propeller 12 when the ship 20 is moving forward. Both propellers 12 thus rotate from the inside to the outside, that is, side A propeller 12 rotates counterclockwise while side B propeller 12 rotates clockwise.
  • each nozzle propeller 100 a vertical central axis 34 is shown, which runs centrally through the nozzle propeller 100 and the nozzle propeller 100 in the propellerauf toode side 28 and the Propellerab anyde page 29 divides. Since the direction of rotation 33 of the two nozzle propeller 100 is in opposite directions, the propeller-impacting sides 28 are arranged in each case towards the center, while the propeller-deflecting sides 29 are respectively arranged on the outside. Accordingly, both the propeller-impacting and propeller-deflecting sides 28, 29 are each formed by one half of the jet propeller 100.
  • each nozzle propeller 100 has two guide fins arranged in such a way that they are arranged completely in the propeller-contacting side 28. Likewise, the third fin is in each case arranged completely in the propeller-deflecting side 29.
  • Such an arrangement of the guide fins 17a, 18a, 19a or 17b, 18b, 19b results in a reduced swirl generation in the propeller pre-flow, which in turn leads to a small twist of the propeller effluent.
  • the guide fins 17a, 18a, 19a and 17b, 18b, 19b are arranged such that in the cross-sectional view of the Fig. 2 their narrow sides can be seen, ie, that their broad sides are aligned substantially in the direction of propeller flow, ie in the longitudinal direction of the jet propeller. All shown guide surfaces (17a, 18a, 19a, 17b, 18b, 19b) are approximately the same length.
  • the (pre-whirling) guiding fins 17a, 18a, 19a and 17b, 18b, 19b, ie both those of the side A and those of the side B, are further arranged so that they form an asymmetric fin system.
  • the asymmetry results from the arrangement of an unequal number of vanes on the propeller-striking side 28 and the propeller-striking side 29, if the vertical center axis 34 is used as the axis of symmetry.
  • the angular pitch between the three vanes 17a to 19a and 17b to 19b is unequal.
  • the angle between the vanes 17a and 18a with respect to their intersection in the propeller axis significantly smaller than the angles between the fins 17a and 19a and 18a and 19b.
  • Fig. 3 shows another example of a two-propeller system with seven vanes 21 to 28, which are provided for simplicity only on the side A with reference numerals.
  • the structure of the nozzle propeller 100 side B behaves corresponding to that of side A.
  • the two fins 21, 22 are arranged on the propeller ab toden side, while the three guide fins 24, 25, 27 are arranged on the propellerauf soundden side.
  • the guide vanes 23, 26 are further aligned substantially along the vertical center axis 34, ie the guide fin 26 extends from the shaft bearing 13 vertically up to the nozzle wall and the fin 23 from the shaft bearing 13 vertically down to the nozzle wall.
  • one of the two fins 23, 26 of the propeller-impacting side 28 and one of the propeller-deflecting side 29 are assigned, so that a total of four fins are arranged on the propeller-impacting side 28 and a total of three fins on the propeller-deflecting side 29.
  • the guide fins 23, 26 could also be attributed to neither of the two sides, so that two guide fins are arranged on the propeller-contacting side 28 and 29 on the propeller-deflecting side. It is important only that on the propellerauf filed 28 each at least one fin is arranged more.
  • the guide fins 26, 27 additionally assume the function as shaft bracket arms, which connect the shaft bearing 13 with the ship's hull 20 or the sheath.
  • the shaft bracket arms 26, 27 are not necessarily provided with a Leitflossenprofil. Within the nozzle 10, however, the Leitflossenprofil is formed over the entire length. In the Fig. 2 and 3 It can be seen that all guide fins are each arranged in the flow direction in front of the propeller 12.
  • guide fins 14, 17a, 18a, 19a and 17b, 18b, 19b, 21 to 24 and 26, 27 may have different cross-sectional shapes.
  • Each Vordrall fin usually has different angles of attack to the propeller's longitudinal axis.
  • the systems described operate on the principle that in essential areas of the propeller circuit surface in the inflow a peripheral component is generated as Vordrall in front of the propeller opposite to its direction of rotation, whereby the propeller works energetically cheaper and is flowed more evenly during its rotation.
  • the invention is not limited to the examples shown, so another system for full spin generation of fixed nozzles of tugs and offshore vessels to increase the tugger train and the speed is possible.
  • Asymmetric may mean that with three fins these are not arranged in a uniform angular pitch of 120 °. With four fins, the angular pitch deviates from 90 °, etc.
  • FIG. 4 Figure 12 shows a cross-sectional view of an example of a fin 32 that may be used for a fin system in a nozzle propeller according to the invention.
  • the fin 32 has a in the drawing of Fig. 4 above arranged, curved suction side 32a and one opposite arranged, substantially flat pressure side 32b.
  • the rounded end face 32c would be placed into the flow in a state installed in the nozzle propeller, ie upstream, while the approximately tapered end face 32d would be located downstream of the propeller.
  • Fig. 5 shows a sectional view of another embodiment of a jet propeller, which is substantially the embodiment, the in Fig. 1 is shown corresponds.
  • the fin 14 in the embodiment in Fig. 5 is formed in such a way that it is completely arranged in the space enclosed by the nozzle 10 or the nozzle ring or in the interior of the nozzle 10 and has no portion which protrudes from the nozzle 10 or projects beyond it.
  • the front and rear edges of the fin 14 in the side view of Fig. 5 arranged parallel to each other, wherein the front edge terminates approximately flush with the front edge of the nozzle 10.
  • FIG. 5 a cross-sectional view of another Leitflosse 14 a schematically indicated, which is also within the interior of the nozzle 10 and in the representation of Fig. 5 is cut from the propeller shaft axis 18. It can be seen that the cross-sectional profile of the fin 14a is arranged obliquely to the propeller shaft axis. To clarify this fact, the cross-sectional profile of the fin 14a right of the nozzle propeller 100 is again shown separately and indeed in a constant position to the propeller shaft axis 18.
  • a center line 19 is guided by the cross-sectional profile of the guide fin 14a shown separately, which intersects the propeller shaft axis at an angle ⁇ .
  • these angles of incidence ⁇ vary for the various guide fins of a jet propeller 100, so that the optimum angle of attack ⁇ can be set depending on the respective position of the guide fin.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydraulic Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP10170015A 2009-07-23 2010-07-19 Düsenpropeller für Schiffe Not-in-force EP2277772B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL10170015T PL2277772T3 (pl) 2009-07-23 2010-07-19 Pędnik okrętowy z dyszą
JP2010162950A JP2011025918A (ja) 2009-07-23 2010-07-20 船舶用ノズルプロペラ
KR1020100071482A KR101421319B1 (ko) 2009-07-23 2010-07-23 선박용 노즐 프로펠러
SG201005346-0A SG168500A1 (en) 2009-07-23 2010-07-23 Nozzle propeller for ships

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009009899U DE202009009899U1 (de) 2009-07-23 2009-07-23 Düsenpropeller für Schiffe

Publications (2)

Publication Number Publication Date
EP2277772A1 EP2277772A1 (de) 2011-01-26
EP2277772B1 true EP2277772B1 (de) 2012-05-23

Family

ID=43086184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10170015A Not-in-force EP2277772B1 (de) 2009-07-23 2010-07-19 Düsenpropeller für Schiffe

Country Status (7)

Country Link
EP (1) EP2277772B1 (es)
JP (1) JP2011025918A (es)
KR (1) KR101421319B1 (es)
DE (1) DE202009009899U1 (es)
ES (1) ES2388584T3 (es)
PL (1) PL2277772T3 (es)
SG (1) SG168500A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9789943B2 (en) 2015-03-06 2017-10-17 Becker Marine Systems Gmbh & Co. Kg Arrangement for multi screw vessels comprising external propeller shafts as well as method for producing such an arrangement

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TW201339052A (zh) * 2012-03-23 2013-10-01 Csbc Corp Taiwan 船舶的非對稱鰭翼裝置
FR2991285B1 (fr) * 2012-06-01 2014-07-11 Stx France Sa Navire pourvu d'au moins une ligne d'arbres equipee d'un propulseur a pompe-helice
DE102013001372B4 (de) * 2013-01-28 2018-02-15 Voith Patent Gmbh Montageverfahren für ein Schiffsantrieb
KR102130721B1 (ko) * 2013-09-26 2020-08-05 대우조선해양 주식회사 비틀림 스트럿 및 그 비틀림 스트럿의 설치구조
WO2015101683A1 (es) * 2014-01-02 2015-07-09 Romero Vázquez Juan José Sistema hélice tobera aceleradora para impulsar barcos
ES2460815B2 (es) * 2014-01-02 2014-12-05 Juan José ROMERO VÁZQUEZ Sistema hélice tobera aceleradora para impulsar barcos
CN105818951B (zh) * 2016-01-12 2019-09-24 中国人民解放军海军工程大学 新型前置侧斜导叶式泵喷推进器及其设计方法
JP6246960B1 (ja) * 2017-01-25 2017-12-13 三菱重工業株式会社 船舶の推進装置及び船舶
AT525998B1 (de) * 2022-05-12 2023-10-15 Hydro Impulse Systems Gmbh Antriebseinheit für ein Wasserfahrzeug mit Wasserleitelementen

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Publication number Priority date Publication date Assignee Title
US9789943B2 (en) 2015-03-06 2017-10-17 Becker Marine Systems Gmbh & Co. Kg Arrangement for multi screw vessels comprising external propeller shafts as well as method for producing such an arrangement

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DE202009009899U1 (de) 2010-12-02
KR20110010079A (ko) 2011-01-31
JP2011025918A (ja) 2011-02-10
PL2277772T3 (pl) 2012-10-31
CN101962071A (zh) 2011-02-02
EP2277772A1 (de) 2011-01-26
ES2388584T3 (es) 2012-10-16
KR101421319B1 (ko) 2014-07-18
SG168500A1 (en) 2011-02-28

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