CA1262215A - Active flap steering system - Google Patents
Active flap steering systemInfo
- Publication number
- CA1262215A CA1262215A CA000482408A CA482408A CA1262215A CA 1262215 A CA1262215 A CA 1262215A CA 000482408 A CA000482408 A CA 000482408A CA 482408 A CA482408 A CA 482408A CA 1262215 A CA1262215 A CA 1262215A
- Authority
- CA
- Canada
- Prior art keywords
- vessel
- main rudder
- towed
- towed vessel
- tow line
- 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
Links
Classifications
-
- 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
- B63H25/06—Steering by rudders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
ABSTRACT
There is provided the combination of a towing vessel and a towed vessel, the towed vessel having a freely swinging main rudder. An angle sensor determines the angle of the main rudder with respect to the towed vessel, and then active flap is provided at the rear of the main rudder. An operative device dictates the orientation of the active flap with respect to the main rudder. A tow line extends from the towing vessel to the towed vessel, and the towed vessel includes a tow line direction sensor. Control means are provided for controlling the operative device in response to input from the tow line direction sensor and the angle sensor.
There is provided the combination of a towing vessel and a towed vessel, the towed vessel having a freely swinging main rudder. An angle sensor determines the angle of the main rudder with respect to the towed vessel, and then active flap is provided at the rear of the main rudder. An operative device dictates the orientation of the active flap with respect to the main rudder. A tow line extends from the towing vessel to the towed vessel, and the towed vessel includes a tow line direction sensor. Control means are provided for controlling the operative device in response to input from the tow line direction sensor and the angle sensor.
Description
This invention relates to a rudder control apparatus and to a control system for that apparatus, in marine vessels.
The rudder control apparatus is mounted on the end of a barge and efPects steering through a main rudder extension that is in the form of a wedge shaped flap.
This flap, hereinafter referred to as the actiYe flap, ~0 has an articulation about a vertical axis that is separate and rearwardly spaced ~rom the main rudder axis of rotation.
The control system for th~ active flap is mounted on a barge in this particular application ~nd has two main control links. The first link is a tow line direction sensor that generates an electric signal to pneumatic or hydraulic control valves in an active flap . actuator. This permits the flow of a pressurized medium . into one side or the other o~ the active flap actuator.
This provides a controlled oscillation of the active `~ flap itself.
The second control link between tug and barge is a radio telemetry link. This enables the tug to assume complete and remot~ control o~ the active ~lap steering system on th~ towed ves~el. A rudder angle sensor permits di~erent degree~ o~ rudder angle to be applied.
Tn operation, an active flap movement to port cau~e3 thQ main rudder, plus active flap, to move starboard and thus, the vessel to starboard. A turning ~orce on the flap in one direc~ion moves the main rudder in the opposite direction.
More particularly, this invention provides, in combination:
~ a towing vessel, `~ ~5 a tow~d vessel, a freely swinging main rudder on th~ towed vessel, an angle sensor for d~termining the angle of the : main rudder with re~pect to the towed vessel, . an a~tive flap at the rear of the main rudder, : .
operative means for dictatiny the orientation of the active flap with respect to the main rudder, a tow line from the towing vessel to the towed vessel, a tow line direction sensor on the towed vessel, and control means for controlling the operative means in response to input from the tow line direction sensor and the anyle sensor.
In further description of the invention referenc2 is made to the accompanying drawings wherein, Figure 1 is a plan view of the aft end of the barge, Figure 2 is a schematic layout of the control system and, Figure 3 is a plan view of the active flap/main rudder assembly, As shown in Figure 1, a main rudder 10 rotates i about rudderstock axis 12. ~t the trailing end 14 of I the rudder is a hinged portion that constitutes the active flap 16. A control system, shown in more detail in Figure 2, moves the active flap actuator 18 and thus the active flap to port or starboardD This movement is independent of the main rudder movement but controls the main rudder for movement in an opposite direction.
Movements are initiated by a towline direction sensor or by radio telemetry.
Blocks 5, 6 and 22 represent the power pack on the barge that is linked to the remote control system.
Hydraulic units 5 with control valves 6 provide one link. Electronic control unit 22 is a second link.
rudder angle sensor 20 i~ shown in the control system layout of Figure 2. The drive between the flap actuator and the flap may be in the form of a rotary vane cylinder, single or multiple rams, gear drive, chain drive or other mechanical equivalents.
, .
., ,~, j . .
~2~Z,~
~ 'igure 2 shows the control system with the components labeled Eor clarification~
Figure 3 shows the active ~lap hinge axis 18, khe main rudder axis 12 and the directions of movement of the active flap and main rudder.
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The rudder control apparatus is mounted on the end of a barge and efPects steering through a main rudder extension that is in the form of a wedge shaped flap.
This flap, hereinafter referred to as the actiYe flap, ~0 has an articulation about a vertical axis that is separate and rearwardly spaced ~rom the main rudder axis of rotation.
The control system for th~ active flap is mounted on a barge in this particular application ~nd has two main control links. The first link is a tow line direction sensor that generates an electric signal to pneumatic or hydraulic control valves in an active flap . actuator. This permits the flow of a pressurized medium . into one side or the other o~ the active flap actuator.
This provides a controlled oscillation of the active `~ flap itself.
The second control link between tug and barge is a radio telemetry link. This enables the tug to assume complete and remot~ control o~ the active ~lap steering system on th~ towed ves~el. A rudder angle sensor permits di~erent degree~ o~ rudder angle to be applied.
Tn operation, an active flap movement to port cau~e3 thQ main rudder, plus active flap, to move starboard and thus, the vessel to starboard. A turning ~orce on the flap in one direc~ion moves the main rudder in the opposite direction.
More particularly, this invention provides, in combination:
~ a towing vessel, `~ ~5 a tow~d vessel, a freely swinging main rudder on th~ towed vessel, an angle sensor for d~termining the angle of the : main rudder with re~pect to the towed vessel, . an a~tive flap at the rear of the main rudder, : .
operative means for dictatiny the orientation of the active flap with respect to the main rudder, a tow line from the towing vessel to the towed vessel, a tow line direction sensor on the towed vessel, and control means for controlling the operative means in response to input from the tow line direction sensor and the anyle sensor.
In further description of the invention referenc2 is made to the accompanying drawings wherein, Figure 1 is a plan view of the aft end of the barge, Figure 2 is a schematic layout of the control system and, Figure 3 is a plan view of the active flap/main rudder assembly, As shown in Figure 1, a main rudder 10 rotates i about rudderstock axis 12. ~t the trailing end 14 of I the rudder is a hinged portion that constitutes the active flap 16. A control system, shown in more detail in Figure 2, moves the active flap actuator 18 and thus the active flap to port or starboardD This movement is independent of the main rudder movement but controls the main rudder for movement in an opposite direction.
Movements are initiated by a towline direction sensor or by radio telemetry.
Blocks 5, 6 and 22 represent the power pack on the barge that is linked to the remote control system.
Hydraulic units 5 with control valves 6 provide one link. Electronic control unit 22 is a second link.
rudder angle sensor 20 i~ shown in the control system layout of Figure 2. The drive between the flap actuator and the flap may be in the form of a rotary vane cylinder, single or multiple rams, gear drive, chain drive or other mechanical equivalents.
, .
., ,~, j . .
~2~Z,~
~ 'igure 2 shows the control system with the components labeled Eor clarification~
Figure 3 shows the active ~lap hinge axis 18, khe main rudder axis 12 and the directions of movement of the active flap and main rudder.
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:
."', .
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;
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Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In combination:
a towing vessel, a towed vessel, a freely swinging main rudder on the towed vessel, an angle sensor for determining the angle of the main rudder with respect to the towed vessel, an active flap at the rear of the main rudder, operative means for dictating the orientation of the active flap with respect to the main rudder, a tow line from the towing vessel to the towed vessel, a tow line direction sensor on the towed vessel, and control means for controlling the operative means in response to input from the tow line direction sensor and the angle sensor.
a towing vessel, a towed vessel, a freely swinging main rudder on the towed vessel, an angle sensor for determining the angle of the main rudder with respect to the towed vessel, an active flap at the rear of the main rudder, operative means for dictating the orientation of the active flap with respect to the main rudder, a tow line from the towing vessel to the towed vessel, a tow line direction sensor on the towed vessel, and control means for controlling the operative means in response to input from the tow line direction sensor and the angle sensor.
2. The invention claimed in claim 1, in which the control means includes a radio telemetry link between the towed vessel and the towing vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000482408A CA1262215A (en) | 1985-05-27 | 1985-05-27 | Active flap steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000482408A CA1262215A (en) | 1985-05-27 | 1985-05-27 | Active flap steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1262215A true CA1262215A (en) | 1989-10-10 |
Family
ID=4130555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000482408A Expired CA1262215A (en) | 1985-05-27 | 1985-05-27 | Active flap steering system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1262215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354235B1 (en) * | 1999-07-30 | 2002-03-12 | Robert C. Davies | Convoy of towed ocean going cargo vessels and method for shipping across an ocean |
| RU2470828C1 (en) * | 2011-04-20 | 2012-12-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Мурманский государственный технический университет" (ФГОУВПО "МГТУ") | Method of controlling towed ship path |
-
1985
- 1985-05-27 CA CA000482408A patent/CA1262215A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354235B1 (en) * | 1999-07-30 | 2002-03-12 | Robert C. Davies | Convoy of towed ocean going cargo vessels and method for shipping across an ocean |
| RU2470828C1 (en) * | 2011-04-20 | 2012-12-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Мурманский государственный технический университет" (ФГОУВПО "МГТУ") | Method of controlling towed ship path |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |