EP1147983B1 - Semi-submersible vehicles - Google Patents
Semi-submersible vehicles Download PDFInfo
- Publication number
- EP1147983B1 EP1147983B1 EP01303604A EP01303604A EP1147983B1 EP 1147983 B1 EP1147983 B1 EP 1147983B1 EP 01303604 A EP01303604 A EP 01303604A EP 01303604 A EP01303604 A EP 01303604A EP 1147983 B1 EP1147983 B1 EP 1147983B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- semi
- housing
- strut
- vehicle according
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/04—Superstructure
- B63G8/06—Conning-towers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/04—Superstructure
Definitions
- the present invention relates to autonomous semi-submersible vehicles.
- the invention seeks to avoid most of these disadvantages.
- the invention may replicate the sensor suite of a survey or research ship at a lower cost and may undertake tasks not currently possible with autonomous vehicles
- an autonomous semi-submersible survey vehicle comprising:
- the strut is adapted to lift the vehicle to assist in recovering the vehicle
- the engine may be a diesel, or any air breathing engine or an electric generator.
- the engine may be used to drive the propelling device.
- the propelling device may be in the form of one or more propellers or water jets.
- the front of the vehicle housing includes a nose cone (or other compartment) to accommodate sensing or other equipment.
- the nose cone may be detachable
- the strut and/or housing may further house or support equipment to control the vehicle.
- the strut may be designed to add buoyancy to the vessel housing.
- WPA strut water plane area
- DISP vehicle displacement
- a semi-submersible vehicle 1 having a vehicle housing or hull 2, a propelling device in the form of a propeller 3 connected to and at one end of the housing to move the vessel, and a strut 4 extending from the top of the housing 2.
- a ballast keel 5 is provided to maintain strut substantially vertical.
- the vehicle is adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water.
- An engine 6 is mounted on the top of the strut.
- the engine may be of any suitable type such as a diesel engine or an electric generator.
- the engine may be used to drive the propeller 3 e.g. through a suitable form of mechanical, hydraulic or electric linkage.
- the front of the vehicle includes a detachable nose cone or compartment 7 to accommodate sensing or other equipment.
- the vehicle is adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water.
- WPA water plane area
- the strut will provide a high degree of buoyancy such that, when waves are present, this will tend to oscillate the vehicle.
- the WPA of the strut is too low, it will only provide a low degree of buoyancy making use of the vehicle impractical, e.g. if forces other than those from waves are applied, the vessel motion amplitude may be too great.
- a WPA (in metres ⁇ 2) to vehicle displacement (DISP, in metres ⁇ 3) ratio is best designed such that WPA ⁇ 3/2 / DISP equals a value of between 0.002 and 0.2.
- the shape of the housing can be designed around an optimum hydrodynamic shape without need for it to accommodate the engine.
- the vehicle of the invention may include other features to that mentioned above.
- the strut may be adapted to lift the vehicle to assist in recovering the vehicle.
- the top of the strut may include a "lifting point" to engage with a crane hoist.
- the strut and/or housing may further house or support equipment to control the vehicle. If the control equipment is located above the water level, it is possible to communicate with the vehicle through a medium other than acoustic signals, e.g. radio waves. This can lead to economies with and/or enhanced function of control equipment.
- a platform may be provided on the top of the strut for such control equipment and/or for other equipment such as cameras.
- the vehicle could be formed of any suitable material such as metal or GRP.
- the vehicle can be made in any desired size other than shown in the drawing. A typical size range could be from three to eight metres in length.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Vibration Prevention Devices (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Catching Or Destruction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
- The present invention relates to autonomous semi-submersible vehicles.
- Autonomous air breathing submersible vehicles are known and are used for a number of ocean survey tasks such as seismic surveys of the sea bed, monitoring of depths, sea floor topology and water pollution. Such vehicles normally consist of a tubular vessel housing, inter alia, a diesel engine, fuel and sensor equipment to perform a desired task. A breather tube normally extends from the top of the vessel to provide air for the engine. Such vessels float on the surface when stationary but include hydrofoils which maintain the vessel just under the surface of the water, below the waves, when the vessel is moving forward so as to provide a stable platform for the sensors.
- These known vessels have a number of disadvantages. For example they cannot be used when stationary; they are difficult to recover from the water; the noise of the engine can interfere with the sensitivity of the equipment; and the vessel needs to be designed to accommodate the engine which need not lead to the best hydrodynamic shape. An increased range of ocean survey tasks can also be performed by fully-submerged autonomous vehicles. These have some major disadvantages; because they cannot use air breathing engines their propulsion systems are inefficient and lack speed and endurance; because they cannot use radio waves their communication systems are limited in range and bandwidth unless they interrupt their survey task to come to the surface; it is difficult to determine their position with accuracy; and
they are expensive to build and operate. A vehicle of this kind is disclosed in the document NL 8101947 - By providing a semi-submersible vehicle the invention seeks to avoid most of these disadvantages. The invention may replicate the sensor suite of a survey or research ship at a lower cost and may undertake tasks not currently possible with autonomous vehicles
- According to the present invention there is provided an autonomous semi-submersible survey vehicle comprising:
- a) a vehicle housing,
- b) a propelling device connected to the housing to move the vessel,
- c) a strut extending from the top of the housing,
- d) at least one engine mounted on the top of the strut above the water surface, the or each engine being connected to drive the propelling device, and
- e) a ballast keel extending from the bottom of the housing to maintain the strut substantially vertical, said vehicle being adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water.
-
- Preferably the strut is adapted to lift the vehicle to assist in recovering the vehicle
- The engine may be a diesel, or any air breathing engine or an electric generator. The engine may be used to drive the propelling device.
- The propelling device may be in the form of one or more propellers or water jets.
- Preferably the front of the vehicle housing includes a nose cone (or other compartment) to accommodate sensing or other equipment. The nose cone may be detachable
- The strut and/or housing may further house or support equipment to control the vehicle.
- The strut may be designed to add buoyancy to the vessel housing. In this respect it has been found that the strut water plane area (WPA, in metres ^ 2) to vehicle displacement (DISP, in metres ^ 3) ratio is best designed such that WPA ^ 3/2 / DISP equals a value of between 0.002 and 0.2.
- The invention will now be described with reference to the accompanying drawings in which:
- Figure 1 shows a schematic side view of a semi-submersible vehicle, and
- Figure 2 shows an end view of the vehicle of Figure 1.
-
- Referring to the drawing there is shown a semi-submersible vehicle 1 having a vehicle housing or
hull 2, a propelling device in the form of a propeller 3 connected to and at one end of the housing to move the vessel, and astrut 4 extending from the top of thehousing 2. A ballast keel 5 is provided to maintain strut substantially vertical. As explained in more detail below, the vehicle is adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water. - An
engine 6 is mounted on the top of the strut. The engine may be of any suitable type such as a diesel engine or an electric generator. The engine may be used to drive the propeller 3 e.g. through a suitable form of mechanical, hydraulic or electric linkage. - The front of the vehicle includes a detachable nose cone or
compartment 7 to accommodate sensing or other equipment. - Central and
rear control fins 8, which may be active or passive, provide stability by dynamic lift. Rudders 9 are provided to steer the vehicle. Instead of rudders one or more propulsor nozzles may be used to steer the vehicle. - As mentioned above, the vehicle is adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water. If the
strut 4 is too large in water plane area (WPA), the strut will provide a high degree of buoyancy such that, when waves are present, this will tend to oscillate the vehicle. If, on the other hand, the WPA of the strut is too low, it will only provide a low degree of buoyancy making use of the vehicle impractical, e.g. if forces other than those from waves are applied, the vessel motion amplitude may be too great. It has been found that a WPA (in metres ^ 2) to vehicle displacement (DISP, in metres ^ 3) ratio is best designed such that WPA ^ 3/2 / DISP equals a value of between 0.002 and 0.2. - With the engine at the top of the strut, there is less noise in the vehicle housing to interfere with any sensors or other equipment in the nose cone. Also the shape of the housing can be designed around an optimum hydrodynamic shape without need for it to accommodate the engine.
- The vehicle of the invention may include other features to that mentioned above. The strut may be adapted to lift the vehicle to assist in recovering the vehicle. For example the top of the strut may include a "lifting point" to engage with a crane hoist.
- The propelling device may be in a form other than a single propeller, such as a number or propellers or contra-rotating propellers , or one or more water jets.
- The strut and/or housing may further house or support equipment to control the vehicle. If the control equipment is located above the water level, it is possible to communicate with the vehicle through a medium other than acoustic signals, e.g. radio waves. This can lead to economies with and/or enhanced function of control equipment. A platform may be provided on the top of the strut for such control equipment and/or for other equipment such as cameras.
- More than one strut may be provided on the vehicle.
- The vehicle could have more than one housing, e.g. twin housings or hulls. The housings could be joined by a horizontal connection above or below the waterline.
- The vehicle could be formed of any suitable material such as metal or GRP. The vehicle can be made in any desired size other than shown in the drawing. A typical size range could be from three to eight metres in length.
- Further modifications will be apparent to those skilled in the art without departing from the scope of the present invention.
Claims (10)
- A semi-submersible autonomous survey vehicle having a vehicle housing (2), a propelling device (3) connected to the housing to move the vessel, and a strut (4) extending from the top of the housing, characterised in that the vehicle has at least one engine (6) mounted on the top of the strut above the water surface, the or each engine being connected to drive the propelling device, and a ballast keel (5) is provided extending from the bottom of the housing to maintain the strut substantially vertical, said vehicle being adapted to be sufficiently buoyant such that it maintains the vessel housing substantially at a predetermined level under the water with the strut extending out of the water.
- A semi-submersible autonomous survey vehicle according to claim 1 wherein the housing is formed from two or more housings or hulls joined together above or below the waterline.
- A semi-submersible autonomous survey vehicle according to claim 1 or 2, further comprising at least one active or passive control fin (8).
- A semi-submersible autonomous survey vehicle according to any preceding claim wherein the vehicle can be lifted by the strutt (4) to assist in recovering the vehicle.
- A semi-submersible autonomous survey vehicle according to any preceding claim wherein the front of the vehicle housing includes a nose cone or other compartment (7) to accommodate sensing or other equipment.
- A semi-submersible autonomous survey vehicle according to claim 7 wherein the nose cone or other compartment is detachable.
- A semi-submersible autonomous survey vehicle according to any preceding claim wherein the strut and/or housing may further house or support equipment to control the vehicle.
- A semi-submersible autonomous survey vehicle according to any preceding claim wherein the strut may be designed to add buoyancy to the vessel housing, and the strut water plane area (WPA, in metres ^ 2) to vehicle displacement (DISP, in metres ^ 3) ratio is best designed such that WPA ^ 3/2 / DISP equals a value of between 0.002 and 0.2.
- A semi-submersible autonomous survey vehicle according to any preceding claim further comprising at least one additional strut.
- A semi-submersible autonomous survey vehicle substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0009720 | 2000-04-20 | ||
GB0009720A GB2361458B (en) | 2000-04-20 | 2000-04-20 | Autonomous semi-submersible vehicles |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1147983A2 EP1147983A2 (en) | 2001-10-24 |
EP1147983A3 EP1147983A3 (en) | 2002-02-13 |
EP1147983B1 true EP1147983B1 (en) | 2004-10-20 |
Family
ID=9890259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01303604A Expired - Lifetime EP1147983B1 (en) | 2000-04-20 | 2001-04-19 | Semi-submersible vehicles |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1147983B1 (en) |
AT (1) | ATE280074T1 (en) |
DE (1) | DE60106508D1 (en) |
GB (1) | GB2361458B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1302962C (en) * | 2004-07-01 | 2007-03-07 | 上海交通大学 | Shallow water type continuous unmanned submersible vehicle |
CN100357158C (en) * | 2005-11-24 | 2007-12-26 | 上海交通大学 | Optronic two-channel auto-observation following semi-submerged device |
CN105836079B (en) * | 2016-05-11 | 2018-04-17 | 哈尔滨工程大学 | Triangular-section power increases latent ballast-free partly latent and transports ship |
JP6750441B2 (en) * | 2016-10-04 | 2020-09-02 | 株式会社Ihi | Semi-submersible mobile |
CN108928438A (en) * | 2017-05-22 | 2018-12-04 | 天津海之星船艇科技有限公司 | A kind of unmanned boat partly latent |
CN107215429B (en) * | 2017-05-23 | 2019-04-16 | 大连理工大学 | A kind of nobody half submarine of novel small-waterplane-area monomer |
CN109703705B (en) * | 2018-12-26 | 2020-12-22 | 哈尔滨工程大学 | Semi-submersible unmanned platform |
DE102020202486A1 (en) * | 2020-02-27 | 2021-09-02 | Thyssenkrupp Ag | Underwater platform, especially for tracking submarines |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868920A (en) * | 1970-09-23 | 1975-03-04 | Air Logistics Corp | Semi-submerged cargo transport system |
DE2812758C3 (en) * | 1978-03-23 | 1981-07-16 | Laukien, Günther Rudi, Prof.Dr.rer.nat., 7512 Rheinstetten | Double hull watercraft |
JPS54126387A (en) * | 1978-03-23 | 1979-10-01 | Laukien Guenther R | Catamaran |
DE2938319C2 (en) * | 1979-09-21 | 1983-01-13 | Günther Rudi Prof.Dr.rer.nat. 7512 Rheinstetten Laukien | Double hull watercraft |
US4350114A (en) * | 1980-03-17 | 1982-09-21 | Sea-Log Corporation | Semi-submersible tanker with directional ice cutters |
NL8101947A (en) * | 1981-04-21 | 1982-11-16 | Skadoc 77 B V | Unmanned underwater inspection craft - has streamlined upper hull with main buoyancy coupled to lower hull contg. propulsion equipment etc. |
FR2565195B1 (en) * | 1984-05-29 | 1986-09-05 | Gass Andre | SEMI-SUBMERSIBLE MARINE VEHICLE |
US4611551A (en) * | 1984-12-14 | 1986-09-16 | Ferguson James S | Snorkel mast for a semi-submersible vehicle |
NO159365C (en) * | 1985-03-11 | 1988-12-21 | Norske Stats Oljeselskap | DEVICE FOR PERFORMING WORK UNDER WATER. |
IL92526A (en) * | 1989-12-01 | 1993-04-04 | Amiran Steinberg | Sea vessel |
-
2000
- 2000-04-20 GB GB0009720A patent/GB2361458B/en not_active Revoked
-
2001
- 2001-04-19 EP EP01303604A patent/EP1147983B1/en not_active Expired - Lifetime
- 2001-04-19 DE DE60106508T patent/DE60106508D1/en not_active Expired - Lifetime
- 2001-04-19 AT AT01303604T patent/ATE280074T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
PIERRE GUTELLE: "The Design of Sailing Yatchs", 1984, NAUTICAL BOOKS. MACMILLAN LONDON, LONDON, U.K. * |
Also Published As
Publication number | Publication date |
---|---|
EP1147983A2 (en) | 2001-10-24 |
GB2361458A (en) | 2001-10-24 |
EP1147983A3 (en) | 2002-02-13 |
DE60106508D1 (en) | 2004-11-25 |
GB0009720D0 (en) | 2000-06-07 |
GB2361458B (en) | 2002-12-11 |
ATE280074T1 (en) | 2004-11-15 |
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