GB2478611A - Integrated lateral thrust propeller arrangement for marine craft - Google Patents

Integrated lateral thrust propeller arrangement for marine craft Download PDF

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Publication number
GB2478611A
GB2478611A GB1011624A GB201011624A GB2478611A GB 2478611 A GB2478611 A GB 2478611A GB 1011624 A GB1011624 A GB 1011624A GB 201011624 A GB201011624 A GB 201011624A GB 2478611 A GB2478611 A GB 2478611A
Authority
GB
United Kingdom
Prior art keywords
propellers
pair
handed
propeller
baffles
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.)
Withdrawn
Application number
GB1011624A
Other versions
GB201011624D0 (en
Inventor
Idris Lewis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1011624A priority Critical patent/GB2478611A/en
Publication of GB201011624D0 publication Critical patent/GB201011624D0/en
Priority to GBGB1111571.4A priority patent/GB201111571D0/en
Priority to PCT/GB2011/001034 priority patent/WO2012007709A1/en
Publication of GB2478611A publication Critical patent/GB2478611A/en
Withdrawn legal-status Critical Current

Links

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
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/08—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing with provision for reversing drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/48—Steering or slowing-down by deflection of propeller slipstream otherwise than by rudder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/20—Transmission between propulsion power unit and propulsion element with provision for reverse drive
    • 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
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B63H2005/103—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type of co-rotative type, i.e. rotating in the same direction, e.g. twin propellers
    • 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
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B63H2005/106—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type with drive shafts of second or further propellers co-axially passing through hub of first propeller, e.g. counter-rotating tandem propellers with co-axial drive shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
    • B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
    • B63H2021/205—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B63H2023/062—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B63H2023/062—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts
    • B63H2023/065—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts having means for differentially varying the speed of the main transmitting elements, e.g. of the drive shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B63H2023/062—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts
    • B63H2023/067—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts the elements being formed by two or more coaxial shafts, e.g. counter-rotating shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/02—Initiating means for steering, for slowing down, otherwise than by use of propulsive elements, or for dynamic anchoring
    • B63H2025/026—Initiating means for steering, for slowing down, otherwise than by use of propulsive elements, or for dynamic anchoring using multi-axis control levers, or the like, e.g. joysticks, wherein at least one degree of freedom is employed for steering, slowing down, or dynamic anchoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
    • Y02T70/5236—Renewable or hybrid-electric solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

A propeller arrangement is disclosed where a pair of opposite handed propellers are each mounted on a separate shaft of a concentric drive shaft arrangement. In a normal drive mode the propellers are rotated in opposite directions such that they both provide a rearward thrust. The propeller arrangement also includes a mechanism 4 for reversing the rotation of the rear propeller so that the propellers rotate together in the same direction at low speed, baffles 6 interrupt the flow from the propellers and generate a lateral thrust without forward or rearward thrust. Control of the propeller arrangement may be by means of an intuitive joystick controller.

Description

TITLE
INTEGRATED LATERAL THRUST FOR MARINE CRAFT
DESCRIPTION
Background
This invention relates to improved lateral control of the rear of a marine craft at low speeds where such craft have inherent difficulty.
Handed contra rotating concentric propellers create forward or rearward thrust without the torque concerns of single propellers. These propellers are generally reversible together.
A propeller duct may increase efficiency, safety or reduce vulnerability.
Main engine / propeller systems are unable to direct thrust sideways unless mounted in a steerable pod or use a water-jet or use multiple engines with vectored thrust. To move the stern of a single engined craft laterally generally requires forward or rearward movement.
This can be difficult to control when the centre of rotation of the whole craft changes with the direction of movement.
Conventional stern thrusters may be difficult to fit.
A disadvantage of a typical single engined sterndrive craft is evident when reversing into a berth in that the craft is prone to swing the bow about a pivot point 1/3 the way forward of the stern.
Statement of Invention
To overcome this concern, the present invention proposes the use of handed contra rotating propellers driven by a main engine(s) where a rear propeller is separately reversible. The propellers turning together with an inward flow operate with moveable baffles to force a sideways flow and resultant lateral thrust. The system is preferably controlled at low speed by an intuitive joystick and wheel.
Advantages The use of the main engine ensures adequate power is continuously available without the addition of other systems and that the power can be applied to generate a side thrust without forward or rearward motion.
Preferably the present invention is applied to a single engined sterndrive craft.
There now follows by way of example of the invention a detailed description to be read with reference to the accompanying drawings in which:-Fig 1 illustrates the manoeuvrability concern; Fig 2 illustrates a typical schematic layout of the invention in side view; Fig 3 illustrates a typical schematic layout of the baffles in end view; Fig 4 illustrates a schematic of joystick operation; Fig 5 illustrates a typical schematic with a full shroud replacing the baffles; and, Fig 6 illustrates alternative blowhole controls in the shroud.
FIG I
Typical condition shown where on reversing a sterndrive craft and angling the thrust direction to move the stern sideways causes both a rearward motion and a large swing of the nose around a pivot point 1/3 the way forward of the stern.
Detailed description
FIG 2 illustrates the invention based on a sterndrive (outdrive) system, see:-I Engine to drive The normal method of connecting an engine to a drive would continue e.g. a universal joint 1 and a splined shaft.
2 Split drive lines After turning the drive through 9Q0 preferably by means of a bevel drive 2a, a drive line would be split in two preferably by a pinion drive 2b 3 Clutches The invention has a clutch 3 in each drive line.
4 Reversing Rear Propeller Drive A splined shuttle 4 engages one of two bevel drives to reverse a rear propeller 5b.
Propeller design Propellers 5a and 5b remain unchanged to normal practise, preferably the forward propeller 5a turns clock wise viewed from the rear to generate forward thrust, the rear propeller 5b turns anti-clock wise viewed from the rear to generate forward thrust.
6 Baffles Baffles 6 are mounted to a cavitation plate and completely cover the propellers 5a and 5b in side view down to a level required to suit the desired thrust.
FIG 3 shows the baffles 6 in end view.
6 Baffles The baffles 6 are mounted to a cavitation plate and are curved to follow the propeller arc in end view FIG 4 shows the joystick 7 operation 7 The joystick 7 has five functions * Neutral * Fore / aft to control the propeller clutches * Lateral to control baffle movement * Diagonal movement to integrate fore/aft and lateral movement.
* Twist to control bow-thruster Mode Control (not illustrated) This would be a switch with three or optionally two functions * High Speed * Low Speed * Neutral Optional ECU functions (not illustrated) In the High speed mode the ECU would control functions as a conventional system including engine response to throttle, leg trim etc In the low speed mode all actions from the Mode Control and Joystick 7 would function through the ECU to control; * Engine speed rising with joystick demand from idle to a preset maximum; * De clutching of a propeller to achieve fore aft movement; * Blowhole shutter opening / tab position to achieve lateral movement; and, * Time limit status on any electrical bowthruster. Fig 5
As an alternative to the baffles 6 the propellers 5a and 5b operate in a shroud 10 which completely covers the propellers in side view.
The shroud 10 is formed from an extended cavitation plate plus one or more add on lower parts.
Within the shroud 10 are blowhole apertures 11 The shroud contour would suit the operating speed of the craft.
The size of the blowhole apertures 11 can be controlled by baffles hA or vertical shutters 11B The propellers 5a and 5b operate in a shroud 10 that acts as a complete duct; there is no forward or rearward motion with both propellers 5a and 5b turning to balance the thrusts.
Blowholes 11 in the side of the shroud 10 open to create a lateral thrust by releasing internal pressure. By opening/closing a blowhole 11 on the appropriate side lateral thrust is controllable. Fig 6
This illustrates the shroud 10 and blowhole control 11 in end view.
Operation The invention includes a High Speed and Low Speed Mode.
High Speed Mode in the forward direction is as common practise. The forward propeller turns to create forward thrust, the opposite hand rear propeller turns the other way to also create forward thrust. Control is via a steering wheel to direct thrust direction and throttle I gearbox lever(s) to control power and direction.
High Speed Mode in the rearward direction is preferably as the low speed mode below.
The invention introduces a Low Speed Mode where the rear propeller is individually adjusted by means of a gearbox such that the rear propeller rotates in the same direction as the forward propeller, thus the rear propeller creates a rearward thrust from a forward flow of water whilst the front propeller generates a similar forward thrust from a rearward flow of water. The propellers working in opposition generate increased pressure between them and a radial outflow from between the propellers. The propellers can be individually stopped.
Partially shrouding the propellers on one side with moveable baffles controls outflow and creates controllable lateral thrust. The baffles are initially set in a neutral position with the propellers turning together or stopped to produce zero lateral thrust. Lifting the baffle on one side with the propellers turning together produces a lateral thrust.
Preferably the tabs retract in the high speed mode to reduce high speed drag.
In the low speed mode the front propeller provides forward motion whilst the rear propeller is stopped by declutching the rear drive, conversely the rear propeller provides rearward motion whilst the front propeller is stopped by declutching the front drive.
Diagonal motion is achieved by cycling lateral thrust and forward or rearward thrust.
At all times the thrust direction can be further controlled by the steering wheel.

Claims (4)

  1. CLAIMS1 A pair of handed propellers rotating in the same direction on a concentric shaft driven by a main powerplant, with baffles to control the outflow from the propellers.
  2. 2 A pair of propellers according to claim 1, enclosed in a duct with controllable baffles.
  3. 3 A pair of propellers according to claim 1, where the powerplant is a single internal combustion engine.
  4. 4 A pair of propellers according to claim 1, where the rear propeller is separately reversible by a gearbox on the propeller shaft centreline A pair of propellers according to claim 1, where the rear propeller is separately reversible by a gearbox concentric with the clutch.6 A pair of propellers according to claim 1, where the propellers counter rotate but the thrust of the rear propeller is reversed by reversing the rear propeller blade pitch.7 A pair of propellers according to claim 4, 5, 6, where both propellers are separately reversible or both propellers can be reversed together before the rear propeller reverse.8 A pair of handed propellers as claim 1, where a bevel drive and pinion drive from the powerplant to the propellers is replaced by an alternative mechanism to change the drive direction e.g. worm & wheel or two bevel drives.9 A pair of propellers according to claim 1, where the speed of rotation of the rear propeller in either direction is geared to be different to the speed of rotation of the front propeller A pair of handed propellers as claim 1 where the clutch in each driveline is preferred as hydraulic but may be replaced by a mechanical clutch e.g. cone clutch.11 A pair of propellers according to claim 1, where the powerplant is a pair of electric motors each coupled to a propeller and each separately reversible.12 A pair of propellers according to claim 1, where the main powerplant is an internal combustion engine driving the front propeller with an auxiliary separately reversible electric motor driving the rear propeller.13 A pair of handed propellers according to claim 1, with baffles hinged above the propellers and separately adjustable to follow the propeller arc or lifted away.14 A pair of handed propellers according to claim 2, where the propellers are enclosed in a shroud and the baffles are hinged to the shroud and cover blowholes in the shroud.A pair of handed propellers according to claim 14, with blowhole control by shutters.16 A pair of handed propellers according to claims 14, 15, where the front and rear propellers are not close coupled and may be in front of or behind the drive leg.17 A pair of handed propellers as claim 16, where the drive to each propeller may be combined in one leg or in individual front and rear legs.18 A pair of handed propellers according to any of the preceding claims, where the invention is applied to multiple engine systems.19 A pair of handed propellers according to claim 18 where the baffles are applied only on the inboard side of multiple engine systems.A pair of handed propellers according to claim 18 where the shroud blow hole and baffle is only on the outboard side of multiple engine systems.21 A pair of handed propellers according to claim 20 where the blowhole has no control.22 A pair of handed propellers according to claim 1, where the rear propeller is reversed for high speed forward motion, where the baffles are operated as trim tabs to provide a rolling moment to control heel.23 A pair of handed propellers as claim 22 where the baffles are operated together as trim tabs to provide a pitching moment.24 A pair of handed propellers according to the preceding claims controlled by a mode switch and joystick with optional integration of bowthruster functions.A pair of handed propellers according to the preceding claims operated by a throttle, mode switch and side thruster lever with optional integration of bowthruster functions.26 A pair of handed propellers according to claim 1, where the preferred application is to a sterndrive system may also be applied to outboard or shaft drive systems.
GB1011624A 2010-07-12 2010-07-12 Integrated lateral thrust propeller arrangement for marine craft Withdrawn GB2478611A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1011624A GB2478611A (en) 2010-07-12 2010-07-12 Integrated lateral thrust propeller arrangement for marine craft
GBGB1111571.4A GB201111571D0 (en) 2010-07-12 2011-07-06 Integrated lateral thrust for a marine craft
PCT/GB2011/001034 WO2012007709A1 (en) 2010-07-12 2011-07-11 Integrated lateral thrust for marine craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1011624A GB2478611A (en) 2010-07-12 2010-07-12 Integrated lateral thrust propeller arrangement for marine craft

Publications (2)

Publication Number Publication Date
GB201011624D0 GB201011624D0 (en) 2010-08-25
GB2478611A true GB2478611A (en) 2011-09-14

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GB1011624A Withdrawn GB2478611A (en) 2010-07-12 2010-07-12 Integrated lateral thrust propeller arrangement for marine craft
GBGB1111571.4A Ceased GB201111571D0 (en) 2010-07-12 2011-07-06 Integrated lateral thrust for a marine craft

Family Applications After (1)

Application Number Title Priority Date Filing Date
GBGB1111571.4A Ceased GB201111571D0 (en) 2010-07-12 2011-07-06 Integrated lateral thrust for a marine craft

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WO (1) WO2012007709A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3778385A1 (en) * 2019-08-15 2021-02-17 C.A.I. Confident Aircraft Industry S.R.L. Hybrid engine system for light aircraft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112373661A (en) * 2020-10-29 2021-02-19 魏子丰 Low-speed accurate speed control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB175922A (en) * 1921-04-19 1922-03-02 James Herbert Wainwright Gill Improvements in or relating to screw propellers and the like
US3561392A (en) * 1967-10-23 1971-02-09 Guillermo Federico Baez Unit of propulsion by hydrodynamic reaction

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Publication number Priority date Publication date Assignee Title
US3179081A (en) * 1963-11-08 1965-04-20 Ingenieur Buro Kort Combined propulsion and steering apparatus for vessels
US3590766A (en) * 1969-02-25 1971-07-06 Hydro Vac Inc Steering unit for barges and the like
US3899992A (en) * 1972-07-20 1975-08-19 Ronald George Fuller Marine steering device
US4074652A (en) * 1976-07-26 1978-02-21 Jackson William M Steering and propulsion device for watercraft
FR2618406B2 (en) * 1986-01-29 1990-01-05 Ebersolt Michel RETRACTABLE NOZZLE FOR SHIP PROPULSION
FR2627742B2 (en) * 1986-01-29 1990-12-14 Ebersolt Michel RETRACTABLE NOZZLE FOR SHIP PROPULSION
US5009621A (en) * 1989-03-20 1991-04-23 Brunswick Corporation Torque splitting drive train mechanism for a dual counterrotating propeller marine drive system
FR2678891B1 (en) * 1991-07-09 1996-01-26 Chaneac Andre PROPULSION DEVICE FOR VESSELS COMPRISING CONCENTRIC AND CONTRA-ROTATING PROPELLERS AND VESSELS EQUIPPED WITH SUCH A DEVICE.
DE19524325A1 (en) * 1995-07-04 1997-01-09 Josef Merz Propulsion plant for water craft - two propeller shafts are installed opposite drive side of vertical shaft, and extend and are mounted on both sides of axis of vertical shaft
US20030152461A1 (en) * 2002-02-08 2003-08-14 Bert Heidenreich Marine engine thrust augmenter
EP2202143A1 (en) * 2008-12-23 2010-06-30 Comercial Gallega de Maquinaria S.L. Contra-rotating propeller propulsion system for ships

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB175922A (en) * 1921-04-19 1922-03-02 James Herbert Wainwright Gill Improvements in or relating to screw propellers and the like
US3561392A (en) * 1967-10-23 1971-02-09 Guillermo Federico Baez Unit of propulsion by hydrodynamic reaction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3778385A1 (en) * 2019-08-15 2021-02-17 C.A.I. Confident Aircraft Industry S.R.L. Hybrid engine system for light aircraft

Also Published As

Publication number Publication date
GB201011624D0 (en) 2010-08-25
WO2012007709A1 (en) 2012-01-19
GB201111571D0 (en) 2011-08-24

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