EP0337849A1 - Unterwasserboje mit hydrodynamischen Stabilisierungsmitteln zum Aufhängen geeignet, insbesondere an einen Hubschrauber - Google Patents

Unterwasserboje mit hydrodynamischen Stabilisierungsmitteln zum Aufhängen geeignet, insbesondere an einen Hubschrauber Download PDF

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Publication number
EP0337849A1
EP0337849A1 EP89400919A EP89400919A EP0337849A1 EP 0337849 A1 EP0337849 A1 EP 0337849A1 EP 89400919 A EP89400919 A EP 89400919A EP 89400919 A EP89400919 A EP 89400919A EP 0337849 A1 EP0337849 A1 EP 0337849A1
Authority
EP
European Patent Office
Prior art keywords
buoy
fins
ballast
helicopter
suspended
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.)
Granted
Application number
EP89400919A
Other languages
English (en)
French (fr)
Other versions
EP0337849B1 (de
Inventor
François Warnan
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0337849A1 publication Critical patent/EP0337849A1/de
Application granted granted Critical
Publication of EP0337849B1 publication Critical patent/EP0337849B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/003—Buoys adapted for being launched from an aircraft or water vehicle;, e.g. with brakes deployed in the water
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys

Definitions

  • the present invention relates to underwater buoys intended to be immersed and held between two waters at the end of a cable, itself attached to a carrier vehicle such as a helicopter. These buoys make it possible, among other things, to detect, either by passive listening, or using a sonar, submerged objects, in particular submarines.
  • the influence of these rings is different depending on whether the buoy dives or goes up.
  • the upper ring 12 is effective in stabilizing the buoy during the descent, but on the other hand it has tendency during ascent to behave like a wing which causes a vortex movement as shown in Figure 2.
  • the bottom ring in principle overcomes this drawback by opposing this swirling movement, since it is placed below the center of gravity of the buoy. However during the descent this bottom ring 13 also behaves like a wing and tends to generate a vortex movement itself. This movement is not exactly the same as that generated during the ascent by the ring 12 because the action of the ballast 14 is not identical to the traction of the cable 11, but in total the effects of the two rings are upset and the overall result is ineffective.
  • the invention proposes replacing the bottom stabilizing ring with a set of retractable fins during the descent, and therefore without effect during this phase, and deployable during the ascent to stabilize the buoy.
  • FIG. 3 shows a view of the lower part of a buoy according to the invention provided, for easier reading of the drawing, only with two fins 15 and 16.
  • the ballast 14 is for example machined so that its circumference is substantially set back from the body cylindrical 10 of the buoy.
  • This cylindrical part is provided with lugs 17 and 18 which project towards the outside of the ballast and are provided with pins on which are fixed, by one end, fins 15 and 16. These can thus rotate around these axes which are located in a plane perpendicular to the axis of the buoy and are tangent to the circumference of the ballast.
  • the profile of these fins is advantageously that of a wing with the leading edge directed downwards. During the ascent the profile of this wing thus works upside down, but the possible appearance of vortices at this time does not present any serious drawbacks.
  • the ailerons being mounted free on their axis of rotation, it is clear that they will tend to remain deployed when the buoy will go up towards the helicopter to which it is suspended to come to enter the receiving part in the form of funnel located below the helicopter and known as the funnel.
  • the dimensions of the fins are chosen so that their free ends do not exceed, when deployed, the diameter determined by the upper ring 12.
  • FIG. 4 shows a complete view of a buoy according to the invention comprising a set of fins 15, seen in the deployed position, and which form a crown all around the ballast 14 at the lower part of the body 10 of the buoy.
  • 12 long fins of 80 mm, width of 15 mm and having a thickness in the center equal to 3 mm were used.
  • the hydrodynamic force on each aileron is substantially equal to 1 N, which is more than enough to obtain a rotation of the aileron around the axis and to keep it in the folded position on along the body of the buoy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Catching Or Destruction (AREA)
  • Bridges Or Land Bridges (AREA)
EP89400919A 1988-04-12 1989-04-04 Unterwasserboje mit hydrodynamischen Stabilisierungsmitteln zum Aufhängen geeignet, insbesondere an einen Hubschrauber Expired - Lifetime EP0337849B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804829A FR2629787B1 (fr) 1988-04-12 1988-04-12 Bouee sous-marine munie de moyens de stabilisation hydrodynamique et destinee a etre suspendue, notamment a un helicoptere
FR8804829 1988-04-12

Publications (2)

Publication Number Publication Date
EP0337849A1 true EP0337849A1 (de) 1989-10-18
EP0337849B1 EP0337849B1 (de) 1992-02-12

Family

ID=9365234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400919A Expired - Lifetime EP0337849B1 (de) 1988-04-12 1989-04-04 Unterwasserboje mit hydrodynamischen Stabilisierungsmitteln zum Aufhängen geeignet, insbesondere an einen Hubschrauber

Country Status (7)

Country Link
US (1) US4954110A (de)
EP (1) EP0337849B1 (de)
AU (1) AU617786B2 (de)
CA (1) CA1331112C (de)
DE (1) DE68900820D1 (de)
ES (1) ES2029119T3 (de)
FR (1) FR2629787B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110636A1 (es) * 2007-03-13 2008-09-18 Praesentis, S.L. Dispositivo de inspección subacuática

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244687B (en) * 1990-06-06 1993-10-27 British Aerospace Stabilisation systems for aerodynamic bodies.
FR2676725B1 (fr) * 1991-05-21 1998-01-09 Thomson Csf Treuil pour remorquage d'objets immerges.
FR2714663B1 (fr) * 1993-12-30 1996-01-26 Thomson Csf Treuil à moteur hydraulique, notamment pour hélicoptère muni d'un sonar.
US5443408A (en) * 1994-03-08 1995-08-22 N. A. Taylor Co., Inc. Low drag buoy
FR2735645B1 (fr) * 1995-06-16 1997-07-25 Thomson Csf Emetteur acoustique remorque
US5627802A (en) * 1995-06-19 1997-05-06 Langer Electronics Corp. Sound amplification system having a submersible microphone
USD386499S (en) * 1995-09-26 1997-11-18 Langer Electronics Corp. Hydrophone housing
US6842006B2 (en) * 2002-06-27 2005-01-11 Schlumberger Technology Corporation Marine electromagnetic measurement system
US7065918B2 (en) * 2004-06-23 2006-06-27 Leone Ernest Weighted fishing leader drag apparatus
NO323388B1 (no) * 2005-06-29 2007-04-16 Abyssus Marine Services As Akustisk boye.
US7737569B2 (en) * 2006-10-24 2010-06-15 Seadyne Energy Systems, Llc System and method for converting ocean wave energy into electricity
US7453165B2 (en) * 2006-10-24 2008-11-18 Seadyne Energy Systems, Llc Method and apparatus for converting ocean wave energy into electricity
US8461730B2 (en) 2010-05-12 2013-06-11 Science Applications International Corporation Radial flux permanent magnet alternator with dielectric stator block
US9051918B1 (en) 2011-02-25 2015-06-09 Leidos, Inc. Vertical axis wind turbine with tensile support structure having rigid or collapsible vanes
US9133815B1 (en) 2011-05-11 2015-09-15 Leidos, Inc. Propeller-type double helix turbine apparatus and method
US8866328B1 (en) 2011-06-07 2014-10-21 Leidos, Inc. System and method for generated power from wave action
US9331535B1 (en) 2012-03-08 2016-05-03 Leidos, Inc. Radial flux alternator
US10155678B2 (en) 2012-07-05 2018-12-18 Murtech, Inc. Damping plate sand filtration system and wave energy water desalination system and methods of using potable water produced by wave energy desalination
US8784653B2 (en) 2012-07-05 2014-07-22 Murtech, Inc. Modular sand filtration-anchor system and wave energy water desalinization system incorporating the same
US8778176B2 (en) 2012-07-05 2014-07-15 Murtech, Inc. Modular sand filtration—anchor system and wave energy water desalination system incorporating the same
US8866321B2 (en) 2012-09-28 2014-10-21 Murtech, Inc. Articulated-raft/rotary-vane pump generator system
US8814469B2 (en) * 2012-12-10 2014-08-26 Murtech, Inc. Articulated bed-mounted finned-spar-buoy designed for current energy absorption and dissipation
US9487282B2 (en) 2014-04-08 2016-11-08 Mrv Systems, Llc Underwater vehicles configured to perform vertical profiling and diagonal profiling, and corresponding methods of operation
US9334860B2 (en) 2014-07-11 2016-05-10 Murtech, Inc. Remotely reconfigurable high pressure fluid passive control system for controlling bi-directional piston pumps as active sources of high pressure fluid, as inactive rigid structural members or as isolated free motion devices
US9702334B2 (en) 2015-03-16 2017-07-11 Murtech, Inc. Hinge system for an articulated wave energy conversion system
US9381987B1 (en) 2015-10-01 2016-07-05 Mrv Systems, Llc Air-based-deployment-compatible underwater vehicle configured to perform vertical profiling and, during information transmission, perform motion stabilization at a water surface, and associated methods
ES2864532T3 (es) 2017-01-18 2021-10-14 Murtech Inc Sistema de conversión de energía undimotriz articulado que utiliza una barcaza de brazo de palanca compuesto

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438588A2 (fr) * 1975-09-11 1980-05-09 France Etat Dispositif de largage et de flottaison pour une charge suspendue
EP0024988A1 (de) * 1979-08-28 1981-03-11 Thomson-Csf Vom Flugzeug abwerfbare Boje

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159806A (en) * 1960-05-06 1964-12-01 Frank N Piasecki High speed tow sonar system
GB1072883A (en) * 1964-11-27 1967-06-21 Burndept Electronics Ltd Radio rescue beacon
US3296996A (en) * 1965-03-24 1967-01-10 Continental Oil Co Method and apparatus for slowing the forward speed of a towed submerged vessel
US3380424A (en) * 1966-03-17 1968-04-30 Continental Oil Co Vessel arresting apparatus
US3327968A (en) * 1966-04-01 1967-06-27 Francis Associates Inc Aircraft towed underwater skip probe
US3672322A (en) * 1970-05-20 1972-06-27 Continental Oil Co Method and apparatus for towing a submersible barge
US3618555A (en) * 1970-07-06 1971-11-09 Us Navy Controlled diversion apparatus
US3755836A (en) * 1970-09-28 1973-09-04 Itt Stabilization arrangement for communication buoys
US3793623A (en) * 1972-10-02 1974-02-19 Bendix Corp Hydrodynamic stabilizing device
GB2123774B (en) * 1982-07-06 1986-02-05 Plessey Co Plc Stabilised underwater apparatus for being towed or tethered

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438588A2 (fr) * 1975-09-11 1980-05-09 France Etat Dispositif de largage et de flottaison pour une charge suspendue
EP0024988A1 (de) * 1979-08-28 1981-03-11 Thomson-Csf Vom Flugzeug abwerfbare Boje

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110636A1 (es) * 2007-03-13 2008-09-18 Praesentis, S.L. Dispositivo de inspección subacuática

Also Published As

Publication number Publication date
EP0337849B1 (de) 1992-02-12
ES2029119T3 (es) 1992-07-16
AU617786B2 (en) 1991-12-05
US4954110A (en) 1990-09-04
CA1331112C (fr) 1994-08-02
DE68900820D1 (de) 1992-03-26
FR2629787B1 (fr) 1991-01-25
AU3266989A (en) 1989-10-19
FR2629787A1 (fr) 1989-10-13

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