US3543713A - Propulsion unit for a vessel - Google Patents

Propulsion unit for a vessel Download PDF

Info

Publication number
US3543713A
US3543713A US778141A US3543713DA US3543713A US 3543713 A US3543713 A US 3543713A US 778141 A US778141 A US 778141A US 3543713D A US3543713D A US 3543713DA US 3543713 A US3543713 A US 3543713A
Authority
US
United States
Prior art keywords
vessel
propulsion
hull
unit
orifice
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
Application number
US778141A
Other languages
English (en)
Inventor
Owen G Slade
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.)
J Samuel White and Co Ltd
Original Assignee
J Samuel White and Co Ltd
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
Priority claimed from GB942368A external-priority patent/GB1253814A/en
Application filed by J Samuel White and Co Ltd filed Critical J Samuel White and Co Ltd
Application granted granted Critical
Publication of US3543713A publication Critical patent/US3543713A/en
Anticipated expiration legal-status Critical
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: ELLIOT TURBOMACHINERY CO., INC.
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B63H11/101—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening
    • B63H11/102—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening the inlet opening and the outlet opening of the pump being substantially coplanar

Definitions

  • PROPULSION UNIT FOR A VESSEL This invention relates to apropulsion unit for a vessel 1.1- cluding means defining a discharge orifice through which water or other fluid can be discharged to propel the vessel.
  • the unit includes a passage leading to means defining the discharge orifice which means can be adjusted to change continuously the direction of discharge, and in one, position of adjustment fluid can flow in a straight path along the passage and then through the orifice.
  • That position of adjustment will clearly be a position for forward propulsion which can thus be very efficient as the fluid does not have to be deflected.
  • the direction of discharge when the unit is mounted in a vessel can be arranged to be horizontal in this position of adjustment or it might perhaps be at a small angle to the horizontal so that most of the thrust is available for propulsion.
  • a simple manual or automatic control of the adjustment of the orifice means may be provided for example by a shaft ex tending across the passage to the hull.
  • the passage is a generally smooth converging shape and the orifice means comprises rotatable ducting which can be turned so that in a position for propulsion astern the fluid is deflected to flow in a direction having a forward component.
  • the orifice means may join an upstream relatively fixed part of the passage in a circle, for ease of adjustment, and in one suitable design the inlet to the passage is circular and the orifice is in the form of an ellipse with the major axis horizontal.
  • the orifice means comprises a plate or like member carrying vanes determining the direction of flow through the orifice.
  • the orifice means could be in an aft extension of the hull to save major structural modifications to the hull.
  • the unit is conveniently in an assembly with a pump for the fluid and the pump may have an inlet in the bottom ofthe hull near the stern to be suitable for use with water planing vessels.
  • the invention is also suitable for use with amphibious vessels which could have an engine capable of use for driving wheels for use on land or a fluid pump for use at sea, possibly by selective engagement of a pair of clutches.
  • FIG. 1 is a diagrammatic sectional elevation of a propulsion unit in a marine vessel embodying the invention
  • FIG. 2 is a rear view of the propulsion unit of FIG. 1;
  • FIG. 3 is a similar view of a modified propulsion unit also embodying the invention.
  • the vessel has a hull containing near the stern a pump casing 11 leading to a propulsion nozzle 13 which is hereafter more fully described.
  • a two-stage axial flow pump 14 driven by a shaft 15 which can be connected to an engine (not shown).
  • the inlet to the casing 11 is in the form of an opening I verging nozzle 18 and 19 in a circle.
  • a suitable ring seal Around the edge of the circle is a suitable ring seal.
  • the downstream part 20 is mounted on a shaft 23 which can rotate in suitable bearings 24 under automatic or manual con trol from the vessel so that the downstream part of the nozzle can be directed either smoothly in line with the upstream part 18 so that the flow of water is horizontal, directly astern and in a straight line along the axis of the pump 14, or (as shown in chain lines in FIG. 1) so that the discharge is as shown at 25 generally forwardly and downwardly to be suitable for propulsion of the vessel astern.
  • the part 20 can also take up interv mediate positions for propulsion in intermediate directions.
  • downstream part of the nozzle is defined by a duct so that the water will be substantially confined even after the duct has been rotated, so that the water can be directed without splashing.
  • a particularly convenient arrangement of the duct is achieved if the nozzle section changes smoothly from a circular section at the inlet to the upstream part to a flatter elliptical section with the major axis horizontal at the discharge end 21.
  • the nozzle can have a comparatively smooth external shape since the only control for effecting movement astern is the rotation of a shaft and this can be in a housing which can be faired into the hull and into the external shape of the nozzle.
  • a sleeve extending across the duct for the shaft 23 can be formed in a fin 26 forming a part of the downstream portion of the nozzle bisecting the outlet.
  • the invention is suitable for use with amphibious vessels having wheels for use on land, one of such wheels W being shown in FIG. 1 of the accompanying drawings, it being apparent that this is but one of the rear driv' ing wheels of the vessel, the wheels being disposed on opposite sides of the vessel.
  • the discharge direction is definedby vanes 31 extending across a circular plate 32 closing the end of the fixed upstream part 18 of the nozzle, and constituting the movable part.
  • the plate 32 can be rotated about the axis of the shaft 23 in a similar manner to that described for the part 20 in FIG. 1.
  • the rear part ofthe hull I0 is inclined rearwardly and upwardly at an angle of about 10 to the horizontal, and the plate 32 is arranged at approximately the same angle. and in the position of adjustment for forward propulsion, water can flow through the vanes substantially without deflection. In theexample shown the flow is slightly displaced from the pump axis.
  • the vanes 31 are inclined at about 24 to the plane of the plate 32.
  • the water discharged will have a direction of flow in the aft direction at about 14 to the horizontal so that a good forward thrust is achieved.
  • the angles of the plate 32 and casing 11 could be altered so that the water issues horizontally to obtain maximum efficiency for forward propulsion but this impairs the efficiency of propulsion in other directions to some extent.
  • the jet will be issuing at an angle of about 34 to the horizontal which gives rather better efficiency for propulsion astern than with the arrangement of FIG. 1.
  • FIG. 3 has the advantage that the discharge orifice lies in the general surface of the hull.
  • the plate 32 was in a rear podlike extension of the hull so that the discharge could be in a straight path along the axis of the pump, without modifying the shape of the hull, and then the arrangement would be rather more like the arrangement of FIG. 1.
  • a propulsion unit for a vessel comprising a housing, an
  • impeller mounted in the housing, an inlet passage for supply- 2.
  • a unit as claimed in claim 1 wherein said rotatable mounting includes a shaft across the outlet passage and means for adjusting the duct mounted for rotation on the shaft.
  • a unitas claimed in claim 3 which the vessel has a hull and the vanes lie in a surface or the hull of the vessel.
  • a unit as claimed in claim 1 in which the vessel has a hull and in which the duct is in an aft extension of the hull.
  • a unit as claimed in claim 7 further comprising single engine for driving the wheels solely foruse on land.

Landscapes

  • 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)
  • Hydraulic Turbines (AREA)
US778141A 1967-11-24 1968-11-22 Propulsion unit for a vessel Expired - Lifetime US3543713A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB942368A GB1253814A (en) 1967-11-24 1967-11-24 Propulsion unit for a vessel
GB5362767 1967-11-24

Publications (1)

Publication Number Publication Date
US3543713A true US3543713A (en) 1970-12-01

Family

ID=26242926

Family Applications (1)

Application Number Title Priority Date Filing Date
US778141A Expired - Lifetime US3543713A (en) 1967-11-24 1968-11-22 Propulsion unit for a vessel

Country Status (3)

Country Link
US (1) US3543713A (xx)
DE (1) DE1810474C3 (xx)
FR (1) FR1603771A (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901176A (en) * 1972-12-14 1975-08-26 Dowty Hydraulic Units Ltd Hydraulic jet propulsion apparatus suitable for waterborne vessels
JPS52140594U (xx) * 1976-04-20 1977-10-25
US4147125A (en) * 1976-07-26 1979-04-03 Elliott Turbomachinery Limited Steering and propulsion means for ships or other vessels
US4852521A (en) * 1987-04-06 1989-08-01 Mariculture Equipment Development, Inc. Amphibious aquaculture feed distribution machine
US5713769A (en) * 1996-09-23 1998-02-03 Brunswick Corp. Stator and nozzle assembly for jet propelled personal watercraft
US6027383A (en) * 1990-05-10 2000-02-22 Broinowski; Stefan Marine ducted propeller jet propulsion unit
US20160031540A1 (en) * 2013-03-15 2016-02-04 Stefan Broinowski Marine ducted propeller jet propulsion system
US10597129B1 (en) 2013-03-15 2020-03-24 Stefan Broinowski Marine ducted propeller mass flux propulsion system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552031B1 (fr) * 1983-09-19 1987-04-10 Alsace Chaudronnerie Forges Vehicule amphibie pouvant servir de bac autonome et pouvant former un pont flottant

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901176A (en) * 1972-12-14 1975-08-26 Dowty Hydraulic Units Ltd Hydraulic jet propulsion apparatus suitable for waterborne vessels
JPS52140594U (xx) * 1976-04-20 1977-10-25
US4147125A (en) * 1976-07-26 1979-04-03 Elliott Turbomachinery Limited Steering and propulsion means for ships or other vessels
US4852521A (en) * 1987-04-06 1989-08-01 Mariculture Equipment Development, Inc. Amphibious aquaculture feed distribution machine
US6027383A (en) * 1990-05-10 2000-02-22 Broinowski; Stefan Marine ducted propeller jet propulsion unit
US5713769A (en) * 1996-09-23 1998-02-03 Brunswick Corp. Stator and nozzle assembly for jet propelled personal watercraft
US20160031540A1 (en) * 2013-03-15 2016-02-04 Stefan Broinowski Marine ducted propeller jet propulsion system
US10597129B1 (en) 2013-03-15 2020-03-24 Stefan Broinowski Marine ducted propeller mass flux propulsion system

Also Published As

Publication number Publication date
DE1810474C3 (de) 1980-12-04
FR1603771A (xx) 1971-05-24
DE1810474A1 (de) 1969-07-17
DE1810474B2 (xx) 1980-04-10

Similar Documents

Publication Publication Date Title
US5720636A (en) Marine propulsor
US3102389A (en) Hydrojet propulsion and control means for boats
EP0085035B1 (en) A reversing means in water-jet propulsion units
US4373919A (en) Multi-passage variable diffuser inlet
US4074652A (en) Steering and propulsion device for watercraft
US3805731A (en) Dual pump waterjet
US3422788A (en) Jet propulsion drive for ships
US3302605A (en) Water jet propulsion apparatus
US3543713A (en) Propulsion unit for a vessel
US6004173A (en) Marine propulsion system with bypass eductor
US3279704A (en) Variable nozzle
US3007305A (en) Marine propulsion apparatus
US4423696A (en) Improved boat thruster system including swirl reducing vanes
US3934538A (en) Boat propulsion system
US5713769A (en) Stator and nozzle assembly for jet propelled personal watercraft
US4388070A (en) Propeller exhaust hub and shroud
US20210114704A1 (en) Exhaust system
US4672807A (en) Wall thruster and method of operation
US6629866B2 (en) Marine vehicle propulsion system
US10730588B2 (en) Ship hull assembly for reducing water resistance and improving maneuverability
US3250072A (en) Reverse steering cascade for jet propelled watercraft
US3138922A (en) Rotating conduit control
US3593686A (en) System for laterally maneuvering a watercraft hull
US6024614A (en) High performance marine propulsion system
US3070956A (en) Swinging gate for jet boat

Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE,ILLINOIS

Free format text: LICENSE;ASSIGNOR:ELLIOT TURBOMACHINERY CO., INC.;REEL/FRAME:004940/0562

Effective date: 19871109

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT

Free format text: LICENSE;ASSIGNOR:ELLIOT TURBOMACHINERY CO., INC.;REEL/FRAME:004940/0562

Effective date: 19871109