EP0527250B1 - Wasserstrahlantriebsgerät - Google Patents

Wasserstrahlantriebsgerät Download PDF

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Publication number
EP0527250B1
EP0527250B1 EP91113397A EP91113397A EP0527250B1 EP 0527250 B1 EP0527250 B1 EP 0527250B1 EP 91113397 A EP91113397 A EP 91113397A EP 91113397 A EP91113397 A EP 91113397A EP 0527250 B1 EP0527250 B1 EP 0527250B1
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EP
European Patent Office
Prior art keywords
water jet
water
discharge duct
vessel
propulsion apparatus
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Expired - Lifetime
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EP91113397A
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English (en)
French (fr)
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EP0527250A1 (de
Inventor
Gianfranco Fantacci
Enrico Innocenti
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Intermarine SpA
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Intermarine SpA
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Priority to AT91113397T priority Critical patent/ATE129213T1/de
Priority to EP91113397A priority patent/EP0527250B1/de
Priority to DE69114001T priority patent/DE69114001T2/de
Publication of EP0527250A1 publication Critical patent/EP0527250A1/de
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Publication of EP0527250B1 publication Critical patent/EP0527250B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/11—Direction control of propulsive fluid with bucket or clamshell-type reversing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/113—Pivoted outlet

Definitions

  • the invention relates to a water jet propulsion apparatus for a watercraft or a vessel, particularly for a mine hunter.
  • a water jet propulsion apparatus by which the maximum propulsive efficiency is attainable, is generally utilized for high-speed navigation during a vessel's passage from one place to another.
  • the higher propulsive efficiency of such a water jet propulsion apparatus does not afford a sufficiently noiseless navigation of the vessel, as needed for a mine location operation.
  • the water propulsion apparatus fo this type is not usable when a very low-speed navigation as noiseless as possible is required, as it is the case with a mine hunter.
  • Another type of water jet propulsion apparatus can be used with advantage also in this instance, which is so made that the least possible noise will be generated, and a very low-speed navigation is permitted.
  • the invention is base on the problem of providing a water jet propulsion apparatus which owing to the features of its relatively simple and not much expensive construction, will permit to navigate according to circumstances, alternatively in both navigating modes, i.e., in the noiseless low-speed mode, and in the high propulsive efficiency high-speed mode.
  • a water jet propulsion apparatus for a watercraft or a vessel, particularly for a mine hunter, comprising at least one first water jet thruster unit constructed for high-speed navigation and provided with its own direction and inversion control means, at least one second water jet thruster unit constructed for low-speed noiseless navigation and provided with its own direction and inversion control means, and one water pumping system associated with both of the first and second water jet thruster units and alternatively connectable to the one or the other of these first and second thruster units.
  • the second water jet thruster unit for low-speed noiseless navigation generates a propulsive water jet at a lower level, particularly under the level of the water surface close to the underside of the vessel's hull, then the first water jet thruster unit for high-speed navigation, which particularly generates a propulsive water jet substantially at the level of the water surface.
  • the water pumping system comprises a pump with a forwardly extending water-intake channel and a rearwardly extending water discharge duct
  • the first water jet thruster unit for high-speed navigation consists of a nozzle provided at the rear end of the water discharge duct, with its axis being oriented in the longitudinal direction of the vessel
  • the second water jet thruster unit for low-speed noiseless navigation consists of a grate of parallel deflector vanes which extend transversally to the longitudinal direction of the vessel and are rearwardly and downwardly inclined relative to a horizontal plane, the said deflector vanes grate being located or locatable within a substantially horizontal water outlet opening in the vessel's bottom and water-deflecting means being provided in the discharge duct of the pump
  • the direction and inversion control means associated with the first water jet trhuster unit and with the second water jet thruster unit can be constructed in any suitable manner.
  • the direction and inversion control means of the first water jet thruster unit consisting of a nozzle, comprise a rearwardly extending water jet-orienting sleeve which is connected to the free end of the nozzle so as to be swingable in both directions in a horizontal plane, and a forwardly directed and downwardly inclined backward motion duct which is branched off the water jet-orienting sleeve and has its outlet opening turned toward the vessel's head, a hingedly connected shutter member being fitted in the said water jet orienting sleeve, for alternatively closing the backward motion duct and the rear end of the water jet-orienting sleeve.
  • the direction and inversion control means of the second water jet thruster unit, formed by the deflector vanes gate preferably consist of means for turning the circularly shaped
  • the water jet propulsion apparatus can be quite easily and efficiently adapted either to a high-speed navigation during which the maximum advantage is taken of the water jet propulsive efficiency, or to a noiseless low-speed navigation that permits a particular handling of a vessel at very low speeds. All this is achieved with a construction which is not much expensive and is relatively simple from the mechanical viewpoint, and which permits such an adaptation of the water jet propulsion apparatus to be easily and quickly carried out while navigating.
  • FIGs 1 to 3 illustrate a first embodiment of the water jet propulsion apparatus according to the invention, for a watercraft or a vessel, particularly for a mine hunter.
  • This water jet propulsion apparatus arranged in the astern region of the vessel, comprises a first water jet thruster unit A for high-speed navigation and a second water jet thruster unit B for low-speed noiseless navigation.
  • Both the first and the second water jet thruster units A, B are associated with the same diagrammatically shown pump 1 which is driven by a not shown motor.
  • the pump 1 is fitted with a water intake channel designated by reference numeral 2, which opens into the water and has a water-intake inlet (not shown) which is provided in the lower region of the vessel's hull.
  • the discharge duct 3 of pump 1 ends into a nozzle 5, which is substantially close to the aft side of the vessel's transom board 4.
  • the nozzle 5 is for a water flow thereout causing a water jet to form with the highest propulsive efficiency, and constitutes the first water jet thruster unit A for high-speed navigation.
  • the nozzle 5 is so arranged that its axis extends in the direction of the longitudinal axis of the vessel's hull, and is located at such a level that the propulsive water jet will be preferably discharged, substantially as a whole or at least in part, at the level L of the water surface.
  • a water jet deflecting device Downstream of nozzle 5 - relative to the water jet-discharge direction, a water jet deflecting device is provided, which can be caused to perform the function of orienting the thrust direction of the propulsive water jet, and thus a rudder function.
  • the said water jet deflecting device constitutes the direction control means of the first water jet thruster unit A for high-speed navigation and consists of a water jet-orienting sleeve 6 which by means of two diametrically opposite arms 106 is connected to the nozzle 5 so as to be swingable around a vertical axis.
  • the extreme positions into which the water jet-orienting sleeve 6 is angularly movable, are shown by dash-and-dot lines in Figure 3. More particularly, the water jet-orienting sleeve 6 can be angularly moved in both senses of its swinging direction by about 30° to 35° relative to the longitudinal axis of nozzle 5.
  • the said device for deflecting the propulsive water jet from nozzle 5 can be also caused to perform the function of a motion reverser and comprises a backward motion duct 7, which is branched off the water jet-orienting sleeve 6 in its lower part and is forwardly directed and downwardly inclined relative to a horizontal plane.
  • the outlet opening of this backward motion duct 7 is turned substantially toward the vessel's head, so that a thrust component of the propulsive water jet will be generated in the backward direction.
  • the backward motion duct 7 is associated with a hinged shutter member 8 that is hingedly connected at 108 to the aft portion of the edge by which the backward motion duct 7 is connected with the water jet-orienting sleeve 6.
  • the hinged shutter member 8 is alternatively swingable into a position in which it closes the backward motion duct 7, so that the propulsive water jet is allowed to flow through the water jet-orienting sleeve 6, and the vessel is thus driven forward, and into a position in which it closes the water jet-orienting sleeve 6 (as shown by dash-and-dot lines in Figures 1 and 2), and is inclinedly arranged relative to the vertical direction, so that the discharge water jet flow is deflected through the backward motion duct 7, and a backward thrust component of the propulsive water jet is thus generated, whereby the vessel is driven backward.
  • a tubular vertical guide 9 is arranged in an intersecting relation with the discharge duct 3 of pump 1, and by its respective sections 109 and 209 extends both downwardly and upwardly from the discharge duct 3.
  • the upward section 209 is closed by a cover 12, while the downward section 109 is not shut and terminates with an opening 409 in the vessel's bottom.
  • Slidably fitted in the tubular guide 9 is a coaxial tubular slide 10 which carries an elbow-like tubular member 11.
  • the inlet opening 111 of the elbow-like tubular member 11 is formed in a skirt portion of the tubular slide 10 and is turned forwardly.
  • the outlet opening 211 of the elbow-like tubular member 11 is arranged coaxial to the tubular guide 9, and is turned toward the open lower end thereof.
  • a circular grate 13 is arranged and is so mounted as to be angularly movable over 360° around the median axis of the outlet opening 211.
  • the circular grate 13 is connected to a driving shaft 14 arranged coaxial to the median longitudinal axis of the tubular guide 9.
  • the driving shaft 14 is led to the exterior of the tubular guide 9, by being passed through a supporting member 15 made integral with the elbow-like tubular member 11.
  • the grate 13 constitutes the second water jet thruster unit B for a low-speed noiseless navigation and consists of a plurality of parallel deflector vanes which extend transversally to the longitudinal direction of the vessel and are inclined downwardly and rearwardly, preferably of about 30°, relative to the vessel's head.
  • the discharge water flow through the elbow-like tubular member 11 is vertically deflected downward, and by the said deflector vanes is further deflected from its vertical flow direction, so that a horizontally directed thrust component of the propulsive water jet will be generated.
  • the propulsive water jet can be oriented in any suitable direction relative to the longitudinal axis of the vessel's hull, so that the grate 13 can be caused to perform either the function of a rudder or of a motion reverser.
  • the shaft driving the grate 13 may be actuated in any suitable manner and, for example, it may be either hydraulically, or electrically, or pneumatically, or manually operated, and the actuating members can be directly controlled by the vessel's steering compartment.
  • the elbow-like tubular member 11 can be vertically shifted into an uplifted inactive position ( Figure 1), and into a lowered down active position ( Figure 2), the tubular guide 9 being of an adequate length.
  • Any suitable means such as of the hydraulic, pneumatic, electric, and even manual type, may be provided as actuator means for lifting up and lowering down the elbow-like tubular member 11.
  • the elbow-like tubular member 11 When the elbow-like tubular member 11 is set in its uplifted inactive position, its outlet opening 211 lies over the discharge duct 3, so that the way is clear for the discharge water flow from pump 1 to nozzle 5.
  • the just disclosed constructional features of the second water jet thruster B are particularly adapted for a water jet propulsion to be applied to a very low-speed navigation, with an extremely reduced noise generation.
  • This second water jet thruster unit B has a propulsive efficiency which is lower than the propulsive efficiency as afforded by the previously disclosed first water jet thruster unit A.
  • the water jet being discharged under the water level, and being orientable in any directions over 360°, it is possible to attain an extremely reduced noise generation, and to achieve the best manoeuvrability of a vessel at the low speeds as required for a mine location operation.
  • the lower end 409 of the tubular guide 9 may be suitably closed with a movable closing body extending thereover (not shown), when the elbow-like tubular member 11 is set in its uplifted inactive position.
  • the tubular guide 9 may be also provided with a lateral inspection port 309 which substantially lies at the level of, or slightly over the outlet opening 211 of the elbow-like tubular member 11 - when this member is set in its uplifted inactive position, and is closed by a hinged lid 16. Thanks to the said inspection port 309, it is possible to service, for example cleaning, the grate 13 of deflector vanes at any moment, even during the navigation, and without the vessel having to be hauled up.
  • the embodiment of the water jet propulsion apparatus comprises one water jet thruster unit A constructed for a high-speed navigation, and two water jet thruster units B constructed for a low-speed noiseless navigation, which are disposed in symmetrical relationship relative to the median longitudinal axis of the vessel.
  • Each water jet thruster unit A,B is provided with its own direction and inversion control means.
  • the water jet thruster units A,B are associated with one water pumping system comprising a pump 1 with a forwardly extending water-intake channel 2 and a rearwardly extending water discharge duct 3.
  • the water jet thruster unit A for high-speed navigation consists of a nozzle 5 provided at the rear end of the water discharge duct 3.
  • the axis of the nozzle 5 is oriented in the longitudinal direction of the vessel.
  • the direction and inversion control means associated with the nozzle 5, comprise - as disclosed for the embodiment according to Figures 1 to 3 - a rearwardly extending water jet-orienting sleeve 6 which is connected to the free end of the nozzle 5 by a spherical joint, so as to be swingable in both directions in a horizontal plane.
  • Branched off the underside of the water jet-orienting sleeve 6 is a forwardly directed and downwardly inclined backward motion duct 7, with its outlet opening being turned toward the vessel's head.
  • a shutter member designated by 8 in Figures 1 and 2 is provided for closing the backward motion duct 7, and for leaving the water jet-orienting sleeve 6 in open condition, and vice-versa.
  • the nozzle 5 and the water jet-orienting sleeve 6 with the backward motion duct 7, are located into a recess 21 in the stern of the vessel.
  • the pump 1 is driven by the shaft 20 of a motor.
  • Each water jet thruster unit B for low-speed noiseless navigation consists of a circular grate 13 of parallel deflector vanes which extend transversally to the longitudinal direction of the vessel and are rearwardly and downwardly inclined to a horizontal plane.
  • This deflector vanes grate 13 is housed into a substantially horizontal opening 409 formed in the bottom of the vessel, and is supported so as to be rotatable around a substantially vertical axis, by a support 22.
  • Two diametrically opposite secondary water discharge ducts 23 are branched off the discharge duct 3 of the pump 1, and are connected to the openings 409 formed in the bottom of the vessel, through the respective deflector vane grates 13 of the two water jet thruster units B for low-speed noiseless navigation.
  • the direction and inversion control means associated with each one of the two water jet thruster units B for low-speed noiseless navigation consist of a manually or motor-operated pinion 24 in mesh with a peripheral ring gear 25 of the deflector vanes grate 13, for angularly orientating this grate.
  • the modified embodiment of the water jet propulsion apparatus according to Figure 7 differs from the embodiment according to Figures 4 to 6, only in that only one water jet thruster unit B for low-speed noiseless navigation, is provided in this modified embodiment.
  • This thruster unit B is arranged in an eccentric position on one side of the longitudinal median axis of the vessel, and is connected to the main water discharge duct 3 of the pump 1 through a secondary discharge duct 23 and through a flap valve system 24.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Hydraulic Turbines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (13)

  1. Wasserstrahlantriebsgerät für ein Wasserfahrzeug oder ein Schiff, insbesondere für einen Minenjäger, gekennzeichnet durch
    a) wenigstens eine erste Wasserstrahl-Triebwerkseinheit (A), ausgelegt für ein Hochgeschwindigkeitsmanövrieren und versehen mit eigenen Richtungs- undUmkehrsteuerungsmitteln (6,7,8),
    b) wenigstens eine zweite Wasserstrahltriebwerkseinheit (B), ausgelegt für ein langsames, geräuschloses Manövrieren und versehen mit eigenen Richtungs- und Umkehrsteuermitteln (14;24,)
    c) ein Wasser-Pumpensystem (1), das der ersten und der zweiten Wasserstrahl-Triebwerkseinheit (A,B) zugeordnet und alternativ mit der einen oder der anderen dieser ersten und zweiten Triebwerkseinheit verbindbar ist.
  2. Wasserstrahlantriebsgerät nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Wasserstrahl-Triebwerkseinheit (B) für ein langsames, geräuschloses Manövrieren einen antreibenden Wasserstrahl auf einer tieferen Ebene als die erste Wasserstrahl-Triebwerkseinheit (A) für ein Hochgeschwindigkeitsmanövrieren hervorruft.
  3. Wasserstrahlantriebsgerät nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die erste Wasserstrahl-Triebwerkseinheit (A) für ein Hochgeschwindigkeitsmanövrieren einen antreibenden Wasserstrahl im wesentlichen in der Ebene der Wasseroberfläche (L) hervorruft, während die zweite Wasserstrahl-Triebwerkseinheit (B) für ein langsames, geräuschloses Manövrieren einen antreibenden Wasserstrahl unter der Ebene der Wasseroberfläche (L) hervorruft, dicht an der Unterseite des Schiffsrumpfes.
  4. Wasserstrahlantriebsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Wasser-Pumpensystem eine Pumpe (1) umfaßt, mit einem sich vorwärts erstreckenden Wassereinlaßkanal (2) und einer sich rückwärts erstreckenden Wasser-Abflußleitung (3), und daß die erste Wasserstrahl-Triebwerkseinheit (A) für ein Hochgeschwindigkeitsmanövrieren eine Düse (5) besitzt, die an dem hinteren Ende der Wasser-Abflußleitung (3) vorgesehen ist, deren Achse in der Längsrichtung des Schiffes orientiert ist, während die zweite Wasserstrahl-Triebwerkseinheit (B) für langsames, geräuschloses Manövrieren aus einem Rechen (13) mit parallelen Ablenk-Leitschaufeln besteht, die sich transversal zu der Längsrichtung des Schiffes erstrecken und die rück- und abwärts relativ zu einer horizontale Ebene angelenkt sind, daß der Rechen mit Ablenk-Lleitschaufeln innerhalb einer im wesentlichen horizontalen Wasserauslaßöffnung (409) in dem Schiffsboden angeordnet oder anordbar ist, und daß Wasser-Ablenkmittel (11,111,211;24) in der Abflußleitung (3) der Pumpe (1) vorgesehen sind, um die Abflußleitung (3) alternativ mit der Düse (5) an deren Ende oder mit der Wasserauslaßöffnung (409) zu verbinden, welche mit dem Ablenk-Leitschaufel-Rechen (13) versehen ist.
  5. Wasserstrahlantriebsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wasser-Ablenkmittel in der Abflußleitung (3) der Pumpe ein ellenbogenähnliches, rohrförmiges Teil (11) besitzen, dessen Einlaßöffnung (111) vorwärts gerichtet ist, und dessen Auslaßöffnung (211) mit dem Ablenk-Leitschaufel-Rechen (13) versehen ist und nach unten gerichtet ist, daß das ellenbogenähnliche Teil (11) in einer im wesentlichen vertikalen rohrförmigen Führung (9) verschiebbar gefangen ist, die in einer mit der im wesentlichen horizontalen Abflußleitung der Pumpe (1) sich schneidenden Beziehung angeordnet ist und die sich in der Unterseite des Schiffrumpfes öffnet, daß Mittel vorgesehen sind, um das ellenbogenähnliche, rohrförmige Teil (11) in der rohrförmigen Führung (9) aus einer angehobenen, inaktiven Lage, in welcher es die Abflußleitung (3) offenläßt und dem Wasser erlaubt, zu der Düse (5) an dem Ende dieser Röhre zu fließen, in eine tiefere, untere, aktive Lage zu verschieben, in der seine Einlaßöffnung (111) ausgelegt ist, mit der Abflußleitung (3) übereinzustimmen, und in der seine Auslaßöffnung (211), versehen mit dem Ablenk-Leitschaufel-Rechen (13), an der unteren Öffnung (409) der rohrförmigen Führung in der Unterseite des Schiffrumpfes liegt, so daß die Verbindung zwischen der Abflußröhre (3) und deren Düse (5) unterbrochen ist.
  6. Wasserstrahlantriebsgerät nach Anspruch 5, dadurch gekennzeichnet, daß das ellenbogenähnliche, rohrförmige Teil (11) auf einem rohrförmigen Schieber (10), verschieblich in der rohrfömrigen Führung (9) gehalten, montiert ist.
  7. Wasserstrahlantriebsgerät nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, daß die rohrförmige Führung (9) in dem Bereich (209), der sich oberhalb der Abflußleitung (3) erstreckt, mit einer Kontrollöffnung (309) versehen ist, die mit einem Deckel (16) verschließbar ist, wobei die Kontrollöffnung (309) im wesentlichen oberhalb der Ebene der Wasseroberfläche (L) angeordnet ist, in der Ebene, bevorzugt unmittelbar vor der Auslaßöffnung (211) des ellenbogenähnlichen, rohrförmigen Teiles (11), wenn dieses Teil in seiner hochgehobenen, inaktiven Position gesetzt ist.
  8. Wasserstrahlantriebsgerät nach den Ansprüchen 5 bis 7, dadurch gekennzeichnet, bei einem in seine tiefere, untere aktive Position gesetzten ellenbogenähnlichen, rohrförmigen Teil (11) dessen Auslaßöffnung (211) in einer im wesentlichen fluchtenden Beziehung mit dem offenen, tieferen Ende (409) der rohrförmigen Führung (9) oder dieser geringfügig vorstehend angeordnet ist.
  9. Wasserstrahlantriebsgerät nach Anspruch 4, dadurch gekennzeichnet, daß die Wasserablenkmittel in der Abflußleitung (3) der Pumpe ein Plattenventilsystem (24) besitzen, das an einem Punkt vorgesehen ist, an dem wenigstens eine Neben-Wasser-Abflußleitung (23) von der Pumpen-Abflußleitung (3) abzweigt und mit dem Ablenk-Leitschaufel-Rechen (13) verbunden ist, daß das Plattenventilsystem (24) derart ausgebildet und betätigbar ist, daß es alternativ eine Position, in der es die Verbindung zwischen der Pumpen-Abflußleitung (3) und dessen Düse (5) schließt und die Verbindung zwischen der Pumpen-Abflußleitung (3) und der Neben-Wasser-Abflußleitung (23) öffnet, um Wasser zu dem Ablenk-Leitschaufel-Rechen (13) zu führen, und eine Position einnehmen kann, in der es die Verbindung mit der Düse (5) öffnet und die Verbindung mit der Neben-Wasser-Abflußleitung (23) schließt.
  10. Wasserstrahlantriebsgerät nach Anspruch 9, dadurch gekennzeichnet, daß nur eine Neben-Wasser-Abflußleitung (23) von der Pumpen-Abflußleitung (3) abzweigt und mit einem Ablenk-Leitschaufel-Rechen (13) verbunden ist, der innerhalb einer Öffnung (409) in der Unterseite des Schiffrumpfes angeordnet ist.
  11. Wassertrahlantriebsgerät nach Anspruch 9, dadurch gekennzeichnet, daß zwei diametral gegenüberliegende Neben-Wasser-Abflußleitungen (23) von der Pumpen-Abflußleitung (3) abzweigen und mit zwei Ablenk-Leitschaufel-Rechen (13) verbunden sind, die in einer symmetrischen Beziehung jeweils innerhalb einer Öffnung (409) in der Unterseite des Schiffrumpfes angeordnet sind.
  12. Wasserstrahlantriebsgerät nach Anspruch 4, dadurch gekennzeichnet, daß die Richtungs- und Umkehrsteuerungsmittel der ersten Wasserstrahl-Triebwerkseinheit (A) mit einer Düse (5) eine sich rückwärts erstreckende, wasserstrahlleitende Hülse (6) umfassen, welche mit dem freien Ende der Düse (5) derart verbunden ist, daß sie in beiden Richtungen einer horizontalen Ebene verschwenkbar ist, und eine vorwärts gerichtete und nach unten angelenkte Rückwärtsbewegungsrohre (7), die von der wasserstrahlleitenden Hülse (6) abzweigt und deren Auslaßöffnung zu dem Schiffsbug hin gerichtet ist, und ein klappbar befestigtes Verschlußteil (8), das in der wasserstrahlleitenden Hülse (6) befestigt ist, um alternativ die Rückwärtsbewegungsrohre und das rückwärtige Ende der wasserstrahlleitenden Hülse (6) zu schließen.
  13. Wasserstrahlantriebsgerät nach Anspruch 4, dadurch gekennzeichnet, daß die Richtungs- und Umkehrsteuerungsmittel der zweiten Wasserstrahl-Triebwerkseinheit (D) durch den Ablenk-Leitschaufel-Rechen (13) ausgebildet sind, welcher Mitttel (24,25) aufweist, um den kreisförmig ausgebildeten Ablenk-Leitschaufel-Rechen (13) um eine zentrale vertikale Achse zu drehen.
EP91113397A 1991-08-09 1991-08-09 Wasserstrahlantriebsgerät Expired - Lifetime EP0527250B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT91113397T ATE129213T1 (de) 1991-08-09 1991-08-09 Wasserstrahlantriebsgerät.
EP91113397A EP0527250B1 (de) 1991-08-09 1991-08-09 Wasserstrahlantriebsgerät
DE69114001T DE69114001T2 (de) 1991-08-09 1991-08-09 Wasserstrahlantriebsgerät.

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Application Number Priority Date Filing Date Title
EP91113397A EP0527250B1 (de) 1991-08-09 1991-08-09 Wasserstrahlantriebsgerät

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EP0527250A1 EP0527250A1 (de) 1993-02-17
EP0527250B1 true EP0527250B1 (de) 1995-10-18

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EP (1) EP0527250B1 (de)
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DE (1) DE69114001T2 (de)

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GB9810169D0 (en) * 1998-05-13 1998-07-08 Wilkins Mark V Propulsion unit
CN109229323B (zh) * 2018-11-02 2024-06-04 珠海云洲智能科技股份有限公司 用于推进器的挡水机构

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US3120437A (en) * 1959-10-16 1964-02-04 Ibm Vesicular photographic reproduction process utilizing a volatile liquid modifying agent
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US4832632A (en) * 1987-05-15 1989-05-23 Rogozienski John J Method and apparatus for generating a high plume of water behind a marine craft

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Publication number Publication date
EP0527250A1 (de) 1993-02-17
DE69114001T2 (de) 1996-04-11
DE69114001D1 (de) 1995-11-23
ATE129213T1 (de) 1995-11-15

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