CA3008468C - Drum for a towed antenna, winch, towed antenna and water vehicle - Google Patents
Drum for a towed antenna, winch, towed antenna and water vehicle Download PDFInfo
- Publication number
- CA3008468C CA3008468C CA3008468A CA3008468A CA3008468C CA 3008468 C CA3008468 C CA 3008468C CA 3008468 A CA3008468 A CA 3008468A CA 3008468 A CA3008468 A CA 3008468A CA 3008468 C CA3008468 C CA 3008468C
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- Prior art keywords
- drum
- core
- towed antenna
- towed
- layer
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3843—Deployment of seismic devices, e.g. of streamers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
- B63B21/66—Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
- B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
- B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
- B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2201/00—Signalling devices
- B63B2201/20—Antenna or mast
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Acoustics & Sound (AREA)
- Oceanography (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a drum for a towed antenna, comprising a drive and a drum core. A first layer of the towed antenna can be wound on the drum core and/or unwound, and a first core element or multiple first core elements can be arranged at a first distance from the drum core such that a second layer of the towed antenna can be wound on the first core element or the multiple first core elements and/or unwound. The invention further relates to a winch for a towed antenna, to a towed antenna for towing in water, to a water vehicle for towing a towed antenna, and to a method for winding and unwinding a towed antenna.
Description
DRUM FOR A TOWED ANTENNA, WINCH, TOWED ANTENNA AND WATER
VEHICLE
Field of the Invention [01] The invention relates to a drum for a towed antenna having a drive and a drum core, wherein a first layer of the towed antenna can be wound and/or unwound on the drum core. Furthermore, the invention relates to a winch for a towed antenna, a towed antenna for towing in water and a water-borne vehicle for towing a towed antenna.
Background
VEHICLE
Field of the Invention [01] The invention relates to a drum for a towed antenna having a drive and a drum core, wherein a first layer of the towed antenna can be wound and/or unwound on the drum core. Furthermore, the invention relates to a winch for a towed antenna, a towed antenna for towing in water and a water-borne vehicle for towing a towed antenna.
Background
[02] A towed antenna is generally introduced into the water and/or pulled on-board by means of a winch on the rear of a water-borne vehicle. To this end, the towed antenna is unwound on a drum of the winch in order to be introduced into the water and/or wound up in order to be pulled in.
[03] Pulling cables and/or towed antennas generally have stabilizers which are optimized in terms of resistance (so-called hard and soft fairings) in order to reduce vibrations of the cable and/or the towed antenna and the tension so that a greater depth for the provided cable and/or the predetermined towed antenna can be adjusted. The disadvantage with in particular hard and/or solid stabilizers is that they in principle cannot be wound in several layers whilst soft and/or flexible stabilizers become damaged when wound in several layers so that the stabilizers and consequently the pulling cable and/or the towed antenna have only a limited service-life.
[04] In order to reduce damage resulting from winding, according to the prior art very wide winding drums are used with a high drum core diameter in order with single-layer windings to maximize the possible cable length. However, this requires an enormous amount of space. Alternatively, winding drums which are pushed one inside the other are used. However, these require a correspondingly large amount of space and a high level of complexity in terms of handling.
Summary
Summary
[05] An object of the invention is to improve the prior art.
[06] The object is achieved with a drum for a towed antenna having a drive and a drum core, wherein a first layer of the towed antenna can be wound and/or unwound on the drum core, and, with a first spacing with respect to the drum core, a first core element or a plurality of first core elements can be arranged so that a second layer of the towed antenna can be wound and/or unwound on the first core element or the plurality of first core elements.
[07] It is particularly advantageous that as a result no loading of the layer which is already wound occurs.
[08] Consequently, a drum is provided, on the drum core of which only a first layer is wound and/or unwound, whilst the second layer of the towed antenna is wound and/or unwound on a core element or a plurality of core elements which is/are located with spacing from the drum core.
[09] As a result of the fact that each layer of the towed antenna is wound up individually in a spatially separated manner, damage to soft and/or flexible stabilizers of the towed antenna and/or the towing cable is prevented and further winding of hard stabilizers is enabled for the first time.
[10] The drum core can be sized to be smaller compared with conventional winding drums since it only receives a single layer of the towed antenna. In addition, the drum has in comparison with conventional winding drums a constant smaller width. Consequently, a smaller structural form can be produced compared with the prior art.
[11] It is particularly advantageous for a plurality of spaced-apart winding cores to be provided in a single drum.
[12] Furthermore, as a result of the respective single-layer winding of the towed antenna, the guiding of the towed antenna during the winding-up and/or unwinding operation is simplified.
[13] A significant notion of the invention is based on the fact that not only a drum core but instead a plurality of spatially spaced-apart winding cores are provided for winding up a towed antenna inside a single winding drum, wherein in each case a single-layer winding of the towed antenna is carried out on each winding core.
[14] In addition to preventing contact of two layers, it is further possible as a result of a corresponding spatial spacing of the core elements to also wind up and/or unwind towing members and/or end fins on the towing antenna and/or the pulling cable without them having to be manually engaged and/or released during winding and/or unwinding on the towed antenna or the pulling cable.
[15] The following terms are explained:
[16] A "drum" (also referred to as a "disk spool" or "cable drum") is in particular a spool or a roller on which material with an in particular round cross-section is wound and/or unwound. In particular, the drum comprises at the two outer sides flanks which limit an expansion of the rolled-up material. On a drum, in particular a towed antenna, a towing rope and/or cable, a wiring cable and/or a towed sonar are wound and/or unwound. In addition, a drum comprises in particular a drive and/or a guiding carriage for guiding the cable and/or the towed antenna.
[17] A "drum core" is in particular the core (also "spool member") on which a towed antenna is wound and/or unwound.
The drum core extends in particular along the longitudinal axis of the drum.
.. [18] A "drive" is in particular a structural unit which moves a drum by means of energy shaping. To this end, in particular each drum has a separate drive or a drive moves a plurality of drums. As a result of the driving of the drum and the corresponding rotation movement of the drum, in particular a towed antenna can be wound and/or unwound.
The drive is in particular a mechanical, electric and/or hydraulic drive.
[19] A "towed antenna" is in particular a long line antenna which is towed after a pulling cable (or towing rope) behind a ship. In particular the towed antenna has a resilient, hose-like cover in which in particular a plurality of hydrophones are arranged. The hose-like cover may be filled with gel or fluid. A towed antenna is in particular a component of a passive and/or the acoustic receiving portion of an active towed sonar. In particular, the towed antenna is towed at a suitable depth and consequently operated at a distance from noises of the towing ship. In particular, the towed antenna also comprises a connected or separate pulling cable and/or towing rope. The pulling cable may in particular also be a multi-function cable.
[20] A "pulling cable" in particular starts a mechanical process by means of pulling or maintains it. In particular, a pulling cable transmits the pulling force of a ship to a towed antenna which is intended to be pulled through the water. Furthermore, the towed antenna may in particular have one or more towed members and/or an end fin, wherein, for example, the active transmission portion of a towed sonar can be arranged in a towed member.
[21] "A layer" means in particular that the towed antenna is arranged only in one winding layer. In a layer, the windings of the towed antenna are in particular wound around the drum core or around a core element or around a plurality of core elements so that the windings of the towed antenna are located laterally one on the other, but not one above the other.
[22] A "core element" is in particular a core on the surface of which and/or around which a towed antenna can be wound and/or unwound. The core element or a plurality of core elements are arranged with spacing from the drum core and/or the previous core element or the plurality of previous core elements in such a manner that there is sufficient spatial distance for the towed antenna to be wound in each case in a single layer on the drum core and/or a core element and/or a plurality of core elements.
For example, with spacing from the drum core on a circle radius in a uniform manner four, preferably eight, rods are arranged as core elements, wherein the towed antenna is wound on the outwardly directed surfaces of the four, preferably eight, rods. It is also possible, for example, for eight circular arc segments to be used in a state arranged on a circle radius in order to wind or unwind a layer. The number and/or the shape of the core elements is or are in particular adapted to the towed antenna and/or the pulling cable [23] In another embodiment of the drum, a second core element and/or a plurality of second core elements can be arranged with a second spacing from the drum core and/or a third core element and/or a plurality of third core elements can be arranged with a third spacing from the drum core and/or a fourth core element and/or a plurality of fourth core elements can be arranged with a fourth spacing from the drum core and/or an additional core element and/or a plurality of additional core elements can be arranged with an additional spacing from the drum core so that a third layer and/or a fourth layer and/or a fifth layer and/or an additional layer of the towed antenna can be wound and/or unwound on the respective core element or the respective plurality of core elements.
[24] Consequently, the necessary number of winding cores for a single layer winding can be provided in accordance with the length of a towed antenna.
[25] It is particularly advantageous for the core elements to be able to be adapted in terms of the number and/or shape and/or the respective spacing thereof from the drum core to the winding radius of the towed antenna.
[26] In addition, the spacings between the drum core and the first core elements and/or the previous core elements and the next core elements can be freely selected and constructed differently.
[27] It is thereby possible for the drum to be adapted in an optimum manner to the diameter of the towed antenna and/or to flow members and/or elements on the towed antenna.
[28] For simple handling and flexible positioning of the core element or the core elements on the drum, the drum comprises a storage device for arranging the core element or the core elements on the drum and/or for removing the core element or the core elements from the drum.
[29] It is thereby possible for the core elements to be provided in the immediate vicinity of the drum and arranged as required on the drum and/or removed therefrom. As a result of a gradual arrangement and/or removal of core elements, the winding of the next layer and/or the unwinding of the layer located therebelow are simplified.
[30] In addition, as a result of the storage device, the core elements can be provided in accordance with requirements and arranged in a flexible manner in accordance with the necessary winding radius of the towed antenna.
[31] A "storage device" is a device having a container of core elements, from which the core elements are supplied to and/or discharged from the drum. A storage device is in particular also a magazine. From the storage device, a core element can be arranged manually and/or automatically on the drum and/or removed. In particular, the storage device automatically adjusts to the predetermined position for introducing and/or removing a core element. The arrangement and/or removal of core elements is carried out in particular from above and/or laterally via the side drum walls of the drum.
[32] In another embodiment, the drum comprises a securing device for fixing and/or releasing the core element or the core elements to and/or from the drum.
[33] A positional fixing of the core element or the core elements before and during the winding and/or unwinding of the towed antenna is thereby achieved. Consequently, during the winding operation, the next core element or next core elements can be arranged and fixed in position before the next layer of the towed antenna is wound on this core element or these core elements. Similarly, after unwinding a layer, the corresponding now-exposed core element or the corresponding exposed core elements can be released from the drum and consequently be removed from the drum in order to enable the layer located therebelow to be unwound.
[34] Consequently, as a result of the securing device, a stable position of each layer of the towed antenna is also enabled.
[35] A "securing device" is a device for fixing and/or releasing a core element or a plurality of core elements to and/or from the drum. Consequently, as a result of the securing device, the position of a core element or a plurality of core elements is fixed and/or released. The securing device may, for example, involve a simple locking of a core element or the drum comprises step-like slots for receiving a plurality of core elements, wherein when the core element is introduced into the predetermined position of the slot, it is fixed, for example, by means of a flap adjustment mechanism. When the towed antenna is unwound, for example, this flap adjustment mechanism can be deactivated again by the lower pressure resulting from the lack of weight of the towed antenna and the core element can be released from the fixing arrangement.
[36] In order to adapt the core element or the core elements to the winding radius of the towed antenna, the core element or the core elements comprise(s) a solid material and/or an angular and/or round and/or elliptical pipe and/or an elliptical cross-sectional surface-area and/or a half-shell and/or a part-shell.
[37] Consequently, as a result of the shape of each individual core element and/or as a result of the combination of a plurality of core elements, a corresponding support face for winding and/or unwinding a layer of the towed antenna can be provided. For example, a semi-circular winding core can be formed by placing a large number of thin rods beside each other or by means of an individual half-shell.
[38] In another aspect of the invention, the object is achieved by a winch, wherein the winch comprises at least one drum described above.
[39] By reducing the dimensions of the drum core and relocation over a plurality of winding cores, the winch can be constructed in a more compact manner. It is particularly advantageous for the winch to haye a smaller width than conventional winches since precisely the width available at the rear of a water-borne vehicle is generally limited.
[40] If the spacing between core elements of the respective layer is not sufficient to receive a floating member and/or an end fin, as a result of the smaller width of the winch according to the invention these can be arranged in an optimum manner beside it and consequently be engaged /disengaged in a simple manner to/from the towed antenna and/or the pulling cable.
[41] Consequently, a winch can be adapted to and used for different towed antennas. This is particularly advantageous since conventional winches are specifically configured for a towed antenna and therefore a replacement of the complete winch with towed antenna has to be carried out if another towed antenna is intended to be used on-board.
Consequently, a winch which can be adapted directly on-board for different intended applications and/or towed antennas in a simple manner is provided.
[42] A "winch" (also referred to as a "windlass") is in particular a cable winch for transmitting tensile forces.
In particular, a winch comprises a drum on which a towed antenna or a pulling cable can be wound and/or unwound.
[43] In another aspect, the object is achieved with a towed antenna for towing in water, wherein the towed antenna comprises a drum described above.
[44] In another embodiment of the towed antenna, the towed antenna comprises a flow element or a plurality of flow elements so that the towed antenna can be wound and/or unwound in at least two layers without any damage to the flow element or the flow elements.
[45] Consequently, flow members which are optimized in terms of resistance can be arranged on the towed antenna and/or a pulling cable without becoming damaged during winding and/or unwinding. Consequently, although the towed antenna can be wound in several layers, since the layers are arranged in a manner spatially separated on different winding cores a corresponding damaging pressure which is present with a winding with multiple layers resting on each other is prevented on the flow elements.
[46] A "flow element" is in particular a geometric structure on the pulling cable and/or on the towed antenna for guiding the flow around the pulling cable and/or the towed antenna. As a result of the flow element, in particular the tension is reduced and consequently for a predetermined cable and/or a predetermined towed antenna a greater depth and/or speed is adjusted and/or the vibration of the pulling cable and/or the towed antenna is reduced as a result of vortex shedding on the flow element. A flow element may, for example, be flow-line-like, drop-like solid shells (hard fairings) which are clamped in particular in sections on the pulling cable and/or the towed antenna. The flow element may also in particular be flexible strips and/or hair-like flexible structures on a pulling cable and/or a towed antenna (soft fairings, hairy fairings). However, a flow element may in particular also be a towed member, for example, for receiving the active portion of a towed sonar, or an end fin of the towed antenna. A flow element comprises in particular rubber and/or plastics material.
[47] In another embodiment of the towed antenna, the flow element or the flow elements comprise(s) a flexible material.
[48] It is thereby also possible to use soft and/or flexible flow elements in order to improve the flow-round behavior of a towed antenna without it becoming damaged by the pressure of the layer which is located thereabove.
[49] A "flexible material" is in particular a resilient material which changes its shape under the action of force and, when the acting force is removed, returns to the original shape. A flexible material may in particular also be a plastically or partially plastically deformable material. With a flexible material, the deformation under the action of force may in particular be irreversible or reversible. A flexible material is in particular rubber or foam.
[50] In an additional aspect of the invention, the object is achieved by a water-borne vehicle for towing a towed antenna in water, wherein the water-borne vehicle comprises a drum described above and/or a winch described above and/or a towed antenna described above.
[51] Consequently, a water-borne vehicle is provided by means of which a towed antenna, in particular with flexible flow elements, can be wound and unwound without damage and consequently let out into the water and/or pulled on-board again.
[52] A "water-borne vehicle" is a vehicle which can move in particular on water, in water and/or under water. A water-borne vehicle may, for example, be a towing ship and/or a submarine.
[53] In an additional aspect of the invention, the object is achieved with a method for winding and/or unwinding a towed antenna by means of a drum described above and/or a winch described above, having the following steps:
in the case of unwinding the towed antenna - unwinding the uppermost layer of the towed antenna from an uppermost core element or from a plurality of uppermost core elements, - releasing a fixing of the uppermost core element or the plurality of uppermost core elements and removing the uppermost core element of the plurality of uppermost core elements from the drum, - unwinding the next-uppermost layer of the towed antenna by repeating the above-mentioned steps as far as the lowest layer of the towed antenna on a drum core, and/or in the case of winding the towed antenna - winding a lowest layer of the towed antenna on the drum core, - inserting a lowest core element or a plurality of lowest core elements with spacing with respect to the drum core into the drum and fixing the lowest core element or the plurality of lowest core elements, - winding the second-lowest layer of the towed antenna onto the lowest core element or the plurality of lowest core elements, - repeating the above-mentioned steps until sufficient layers for winding the towed antennas are provided.
[54] Consequently, a method is provided by means of which a towed antenna can be wound and/or unwound in a plurality of individual layers without the towed antenna and/or a flow element which is arranged thereon becoming damaged.
[55] It is particularly advantageous that the winding or unwinding can be adapted in a selective manner to the type and/or shape of the towed antenna.
Brief Description of the Figures [56] The invention will be explained in greater detail below with reference to embodiments, in which:
Figure la is a schematic cross-sectional illustration of a drum with a towed antenna during the winding operation, Figure lb is a schematic longitudinal sectioned illustration of the above-mentioned drum, Figure 2 is a schematic cross-sectional illustration of another drum according to the invention, Figure 3 is a schematic illustration of a towing ship having a winch and a towed antenna.
Detailed Description [57] A drum 101 is arranged in a frame 102 and has a rear first drum side wall 105 and a front second drum side wall which is not shown in the cross-sectional illustration. On the frame 102 of the drum 101, a drive 107 and a magazine 135 for storage, arrangement and removal of rods 111, 113 are arranged on the drum 101.
[58] At the center, the drum 101 comprises a drum core 103.
With a first spacing from the drum core 103, four first rods 111 are arranged with equal spacing on a circle radius. With a second greater spacing from the drum core, four second rods 113 are arranged with equal spacing on a circle radius, four holes 115 for additional third rods are arranged with an even greater spacing from the drum core.
[59] The first rods 111 and the second rods 113 are inserted and fixed through corresponding holes in the first drum wall 105 and the second drum wall.
[60] The frame 102 of the drum 101 comprises at the top a guiding carriage 137 through which a towed antenna 109 is guided. The towed antenna 109 comprises a plurality of portions each with six soft cable stabilizers 110.
[61] The towed antenna 109 is first wound around the inner drum core 103 in a first layer 119. Subsequently, the towed antenna 109 is transferred to the uppermost first rod 111 and is wound at the outer side around the additional three first rods 111 so that a second layer 121 is present. From the last of the first rods 111, the towed antenna is then wound via the uppermost second rod 113 in a new, third layer 123. The towed antenna 109 is further guided along the outer surface of the additional second rods 113 and extends from the last second rod 113 through the guiding carriage 137 (in longitudinal section, the guiding of the towed antenna 109 through the guiding carriage 137 and the magazine 135 is not shown for reasons of simplification).
[62] In an alternative, the drum 201 comprises a drum core 203 and a rear drum side wall 205 (the front drum side wall is not shown).
[63] Around the drum core 203 with a spatial spacing eccentrically from a center of the drum core 203, a first upper half-shell 211 and a first lower half-shell 212 are arranged. With a greater spacing with respect to the drum core 203, a second upper half-shell 213 and a second lower half-shell 214 are arranged eccentrically from the center of the drum core 203.
[64] A towed antenna 209 has in portions four flexible strips 210 as flow elements. The towed antenna 209 is wound in a single layer around the drum core 203 (first layer 219) and subsequently merges for the second layer 221 onto the first upper half-shell 211 followed by the first lower half-shell 212. As a result of the eccentric arrangement of the upper and lower half-shells 211, 212, 213 and 214, the towed antenna 209 is guided free from a significant curvature from the first lower half-shell 212 to the second upper half-shell 213. In order to form the third layer 223, the towed antenna 209 is wound along the outer surface of the second upper half-shell 213 and the second lower half-.. shell 214.
[65] A towing ship 330 travels on the water surface 331 and comprises at a rear a winch 333 with two drums 101. There is arranged on the winch 333 the first pulling cable 335 which comprises four hair cable stabilizers 310. At the end of the first pulling cable 335 there is arranged a towing member 337 to which in turn a second pulling cable 339 with three hair cable stabilizers 310 is secured. At the end of the second pulling cable 339 there is suspended the towed antenna 109 which comprises hydrophones 341.
[66] The following operational procedures are carried out with the towing ship 330, the winch 333 with the two drums 101 and the towed antenna 109:
[67] On-board the towing ship 331, the winch 333 is operated and the first drum 101 is rotated by means of the drive 107 so that the uppermost layer of the towed antenna 109 is unwound from the four third rods in the holes 115.
As soon as the towed antenna 109 is no longer positioned on the third rods in the holes 115, these third rods are removed from the holes 115 by means of the magazine 135 and received in the magazine 135. The uppermost first layer of the towed antenna 109 is let out into the water.
[68] The first drum 101 rotates further so that the third layer 123 of the towed antenna 109 is unwound from the second rods 113. This unwound portion of the towed antenna 109 is in turn let out via the rear of the towing ship 330 into the water. Subsequently, the second rods 113 are again removed by means of the magazine 135 from the drum 101 by these second rods 113 again being pulled out of the first drum side wall 105 and the second drum side wall.
Subsequently, the drum 101 rotates further so that the second layer 121 of the towed antenna 109 is unwound from the first rods 111. These first rods 111 are in turn removed by means of the magazine 135 from the drum 101.
The drum core extends in particular along the longitudinal axis of the drum.
.. [18] A "drive" is in particular a structural unit which moves a drum by means of energy shaping. To this end, in particular each drum has a separate drive or a drive moves a plurality of drums. As a result of the driving of the drum and the corresponding rotation movement of the drum, in particular a towed antenna can be wound and/or unwound.
The drive is in particular a mechanical, electric and/or hydraulic drive.
[19] A "towed antenna" is in particular a long line antenna which is towed after a pulling cable (or towing rope) behind a ship. In particular the towed antenna has a resilient, hose-like cover in which in particular a plurality of hydrophones are arranged. The hose-like cover may be filled with gel or fluid. A towed antenna is in particular a component of a passive and/or the acoustic receiving portion of an active towed sonar. In particular, the towed antenna is towed at a suitable depth and consequently operated at a distance from noises of the towing ship. In particular, the towed antenna also comprises a connected or separate pulling cable and/or towing rope. The pulling cable may in particular also be a multi-function cable.
[20] A "pulling cable" in particular starts a mechanical process by means of pulling or maintains it. In particular, a pulling cable transmits the pulling force of a ship to a towed antenna which is intended to be pulled through the water. Furthermore, the towed antenna may in particular have one or more towed members and/or an end fin, wherein, for example, the active transmission portion of a towed sonar can be arranged in a towed member.
[21] "A layer" means in particular that the towed antenna is arranged only in one winding layer. In a layer, the windings of the towed antenna are in particular wound around the drum core or around a core element or around a plurality of core elements so that the windings of the towed antenna are located laterally one on the other, but not one above the other.
[22] A "core element" is in particular a core on the surface of which and/or around which a towed antenna can be wound and/or unwound. The core element or a plurality of core elements are arranged with spacing from the drum core and/or the previous core element or the plurality of previous core elements in such a manner that there is sufficient spatial distance for the towed antenna to be wound in each case in a single layer on the drum core and/or a core element and/or a plurality of core elements.
For example, with spacing from the drum core on a circle radius in a uniform manner four, preferably eight, rods are arranged as core elements, wherein the towed antenna is wound on the outwardly directed surfaces of the four, preferably eight, rods. It is also possible, for example, for eight circular arc segments to be used in a state arranged on a circle radius in order to wind or unwind a layer. The number and/or the shape of the core elements is or are in particular adapted to the towed antenna and/or the pulling cable [23] In another embodiment of the drum, a second core element and/or a plurality of second core elements can be arranged with a second spacing from the drum core and/or a third core element and/or a plurality of third core elements can be arranged with a third spacing from the drum core and/or a fourth core element and/or a plurality of fourth core elements can be arranged with a fourth spacing from the drum core and/or an additional core element and/or a plurality of additional core elements can be arranged with an additional spacing from the drum core so that a third layer and/or a fourth layer and/or a fifth layer and/or an additional layer of the towed antenna can be wound and/or unwound on the respective core element or the respective plurality of core elements.
[24] Consequently, the necessary number of winding cores for a single layer winding can be provided in accordance with the length of a towed antenna.
[25] It is particularly advantageous for the core elements to be able to be adapted in terms of the number and/or shape and/or the respective spacing thereof from the drum core to the winding radius of the towed antenna.
[26] In addition, the spacings between the drum core and the first core elements and/or the previous core elements and the next core elements can be freely selected and constructed differently.
[27] It is thereby possible for the drum to be adapted in an optimum manner to the diameter of the towed antenna and/or to flow members and/or elements on the towed antenna.
[28] For simple handling and flexible positioning of the core element or the core elements on the drum, the drum comprises a storage device for arranging the core element or the core elements on the drum and/or for removing the core element or the core elements from the drum.
[29] It is thereby possible for the core elements to be provided in the immediate vicinity of the drum and arranged as required on the drum and/or removed therefrom. As a result of a gradual arrangement and/or removal of core elements, the winding of the next layer and/or the unwinding of the layer located therebelow are simplified.
[30] In addition, as a result of the storage device, the core elements can be provided in accordance with requirements and arranged in a flexible manner in accordance with the necessary winding radius of the towed antenna.
[31] A "storage device" is a device having a container of core elements, from which the core elements are supplied to and/or discharged from the drum. A storage device is in particular also a magazine. From the storage device, a core element can be arranged manually and/or automatically on the drum and/or removed. In particular, the storage device automatically adjusts to the predetermined position for introducing and/or removing a core element. The arrangement and/or removal of core elements is carried out in particular from above and/or laterally via the side drum walls of the drum.
[32] In another embodiment, the drum comprises a securing device for fixing and/or releasing the core element or the core elements to and/or from the drum.
[33] A positional fixing of the core element or the core elements before and during the winding and/or unwinding of the towed antenna is thereby achieved. Consequently, during the winding operation, the next core element or next core elements can be arranged and fixed in position before the next layer of the towed antenna is wound on this core element or these core elements. Similarly, after unwinding a layer, the corresponding now-exposed core element or the corresponding exposed core elements can be released from the drum and consequently be removed from the drum in order to enable the layer located therebelow to be unwound.
[34] Consequently, as a result of the securing device, a stable position of each layer of the towed antenna is also enabled.
[35] A "securing device" is a device for fixing and/or releasing a core element or a plurality of core elements to and/or from the drum. Consequently, as a result of the securing device, the position of a core element or a plurality of core elements is fixed and/or released. The securing device may, for example, involve a simple locking of a core element or the drum comprises step-like slots for receiving a plurality of core elements, wherein when the core element is introduced into the predetermined position of the slot, it is fixed, for example, by means of a flap adjustment mechanism. When the towed antenna is unwound, for example, this flap adjustment mechanism can be deactivated again by the lower pressure resulting from the lack of weight of the towed antenna and the core element can be released from the fixing arrangement.
[36] In order to adapt the core element or the core elements to the winding radius of the towed antenna, the core element or the core elements comprise(s) a solid material and/or an angular and/or round and/or elliptical pipe and/or an elliptical cross-sectional surface-area and/or a half-shell and/or a part-shell.
[37] Consequently, as a result of the shape of each individual core element and/or as a result of the combination of a plurality of core elements, a corresponding support face for winding and/or unwinding a layer of the towed antenna can be provided. For example, a semi-circular winding core can be formed by placing a large number of thin rods beside each other or by means of an individual half-shell.
[38] In another aspect of the invention, the object is achieved by a winch, wherein the winch comprises at least one drum described above.
[39] By reducing the dimensions of the drum core and relocation over a plurality of winding cores, the winch can be constructed in a more compact manner. It is particularly advantageous for the winch to haye a smaller width than conventional winches since precisely the width available at the rear of a water-borne vehicle is generally limited.
[40] If the spacing between core elements of the respective layer is not sufficient to receive a floating member and/or an end fin, as a result of the smaller width of the winch according to the invention these can be arranged in an optimum manner beside it and consequently be engaged /disengaged in a simple manner to/from the towed antenna and/or the pulling cable.
[41] Consequently, a winch can be adapted to and used for different towed antennas. This is particularly advantageous since conventional winches are specifically configured for a towed antenna and therefore a replacement of the complete winch with towed antenna has to be carried out if another towed antenna is intended to be used on-board.
Consequently, a winch which can be adapted directly on-board for different intended applications and/or towed antennas in a simple manner is provided.
[42] A "winch" (also referred to as a "windlass") is in particular a cable winch for transmitting tensile forces.
In particular, a winch comprises a drum on which a towed antenna or a pulling cable can be wound and/or unwound.
[43] In another aspect, the object is achieved with a towed antenna for towing in water, wherein the towed antenna comprises a drum described above.
[44] In another embodiment of the towed antenna, the towed antenna comprises a flow element or a plurality of flow elements so that the towed antenna can be wound and/or unwound in at least two layers without any damage to the flow element or the flow elements.
[45] Consequently, flow members which are optimized in terms of resistance can be arranged on the towed antenna and/or a pulling cable without becoming damaged during winding and/or unwinding. Consequently, although the towed antenna can be wound in several layers, since the layers are arranged in a manner spatially separated on different winding cores a corresponding damaging pressure which is present with a winding with multiple layers resting on each other is prevented on the flow elements.
[46] A "flow element" is in particular a geometric structure on the pulling cable and/or on the towed antenna for guiding the flow around the pulling cable and/or the towed antenna. As a result of the flow element, in particular the tension is reduced and consequently for a predetermined cable and/or a predetermined towed antenna a greater depth and/or speed is adjusted and/or the vibration of the pulling cable and/or the towed antenna is reduced as a result of vortex shedding on the flow element. A flow element may, for example, be flow-line-like, drop-like solid shells (hard fairings) which are clamped in particular in sections on the pulling cable and/or the towed antenna. The flow element may also in particular be flexible strips and/or hair-like flexible structures on a pulling cable and/or a towed antenna (soft fairings, hairy fairings). However, a flow element may in particular also be a towed member, for example, for receiving the active portion of a towed sonar, or an end fin of the towed antenna. A flow element comprises in particular rubber and/or plastics material.
[47] In another embodiment of the towed antenna, the flow element or the flow elements comprise(s) a flexible material.
[48] It is thereby also possible to use soft and/or flexible flow elements in order to improve the flow-round behavior of a towed antenna without it becoming damaged by the pressure of the layer which is located thereabove.
[49] A "flexible material" is in particular a resilient material which changes its shape under the action of force and, when the acting force is removed, returns to the original shape. A flexible material may in particular also be a plastically or partially plastically deformable material. With a flexible material, the deformation under the action of force may in particular be irreversible or reversible. A flexible material is in particular rubber or foam.
[50] In an additional aspect of the invention, the object is achieved by a water-borne vehicle for towing a towed antenna in water, wherein the water-borne vehicle comprises a drum described above and/or a winch described above and/or a towed antenna described above.
[51] Consequently, a water-borne vehicle is provided by means of which a towed antenna, in particular with flexible flow elements, can be wound and unwound without damage and consequently let out into the water and/or pulled on-board again.
[52] A "water-borne vehicle" is a vehicle which can move in particular on water, in water and/or under water. A water-borne vehicle may, for example, be a towing ship and/or a submarine.
[53] In an additional aspect of the invention, the object is achieved with a method for winding and/or unwinding a towed antenna by means of a drum described above and/or a winch described above, having the following steps:
in the case of unwinding the towed antenna - unwinding the uppermost layer of the towed antenna from an uppermost core element or from a plurality of uppermost core elements, - releasing a fixing of the uppermost core element or the plurality of uppermost core elements and removing the uppermost core element of the plurality of uppermost core elements from the drum, - unwinding the next-uppermost layer of the towed antenna by repeating the above-mentioned steps as far as the lowest layer of the towed antenna on a drum core, and/or in the case of winding the towed antenna - winding a lowest layer of the towed antenna on the drum core, - inserting a lowest core element or a plurality of lowest core elements with spacing with respect to the drum core into the drum and fixing the lowest core element or the plurality of lowest core elements, - winding the second-lowest layer of the towed antenna onto the lowest core element or the plurality of lowest core elements, - repeating the above-mentioned steps until sufficient layers for winding the towed antennas are provided.
[54] Consequently, a method is provided by means of which a towed antenna can be wound and/or unwound in a plurality of individual layers without the towed antenna and/or a flow element which is arranged thereon becoming damaged.
[55] It is particularly advantageous that the winding or unwinding can be adapted in a selective manner to the type and/or shape of the towed antenna.
Brief Description of the Figures [56] The invention will be explained in greater detail below with reference to embodiments, in which:
Figure la is a schematic cross-sectional illustration of a drum with a towed antenna during the winding operation, Figure lb is a schematic longitudinal sectioned illustration of the above-mentioned drum, Figure 2 is a schematic cross-sectional illustration of another drum according to the invention, Figure 3 is a schematic illustration of a towing ship having a winch and a towed antenna.
Detailed Description [57] A drum 101 is arranged in a frame 102 and has a rear first drum side wall 105 and a front second drum side wall which is not shown in the cross-sectional illustration. On the frame 102 of the drum 101, a drive 107 and a magazine 135 for storage, arrangement and removal of rods 111, 113 are arranged on the drum 101.
[58] At the center, the drum 101 comprises a drum core 103.
With a first spacing from the drum core 103, four first rods 111 are arranged with equal spacing on a circle radius. With a second greater spacing from the drum core, four second rods 113 are arranged with equal spacing on a circle radius, four holes 115 for additional third rods are arranged with an even greater spacing from the drum core.
[59] The first rods 111 and the second rods 113 are inserted and fixed through corresponding holes in the first drum wall 105 and the second drum wall.
[60] The frame 102 of the drum 101 comprises at the top a guiding carriage 137 through which a towed antenna 109 is guided. The towed antenna 109 comprises a plurality of portions each with six soft cable stabilizers 110.
[61] The towed antenna 109 is first wound around the inner drum core 103 in a first layer 119. Subsequently, the towed antenna 109 is transferred to the uppermost first rod 111 and is wound at the outer side around the additional three first rods 111 so that a second layer 121 is present. From the last of the first rods 111, the towed antenna is then wound via the uppermost second rod 113 in a new, third layer 123. The towed antenna 109 is further guided along the outer surface of the additional second rods 113 and extends from the last second rod 113 through the guiding carriage 137 (in longitudinal section, the guiding of the towed antenna 109 through the guiding carriage 137 and the magazine 135 is not shown for reasons of simplification).
[62] In an alternative, the drum 201 comprises a drum core 203 and a rear drum side wall 205 (the front drum side wall is not shown).
[63] Around the drum core 203 with a spatial spacing eccentrically from a center of the drum core 203, a first upper half-shell 211 and a first lower half-shell 212 are arranged. With a greater spacing with respect to the drum core 203, a second upper half-shell 213 and a second lower half-shell 214 are arranged eccentrically from the center of the drum core 203.
[64] A towed antenna 209 has in portions four flexible strips 210 as flow elements. The towed antenna 209 is wound in a single layer around the drum core 203 (first layer 219) and subsequently merges for the second layer 221 onto the first upper half-shell 211 followed by the first lower half-shell 212. As a result of the eccentric arrangement of the upper and lower half-shells 211, 212, 213 and 214, the towed antenna 209 is guided free from a significant curvature from the first lower half-shell 212 to the second upper half-shell 213. In order to form the third layer 223, the towed antenna 209 is wound along the outer surface of the second upper half-shell 213 and the second lower half-.. shell 214.
[65] A towing ship 330 travels on the water surface 331 and comprises at a rear a winch 333 with two drums 101. There is arranged on the winch 333 the first pulling cable 335 which comprises four hair cable stabilizers 310. At the end of the first pulling cable 335 there is arranged a towing member 337 to which in turn a second pulling cable 339 with three hair cable stabilizers 310 is secured. At the end of the second pulling cable 339 there is suspended the towed antenna 109 which comprises hydrophones 341.
[66] The following operational procedures are carried out with the towing ship 330, the winch 333 with the two drums 101 and the towed antenna 109:
[67] On-board the towing ship 331, the winch 333 is operated and the first drum 101 is rotated by means of the drive 107 so that the uppermost layer of the towed antenna 109 is unwound from the four third rods in the holes 115.
As soon as the towed antenna 109 is no longer positioned on the third rods in the holes 115, these third rods are removed from the holes 115 by means of the magazine 135 and received in the magazine 135. The uppermost first layer of the towed antenna 109 is let out into the water.
[68] The first drum 101 rotates further so that the third layer 123 of the towed antenna 109 is unwound from the second rods 113. This unwound portion of the towed antenna 109 is in turn let out via the rear of the towing ship 330 into the water. Subsequently, the second rods 113 are again removed by means of the magazine 135 from the drum 101 by these second rods 113 again being pulled out of the first drum side wall 105 and the second drum side wall.
Subsequently, the drum 101 rotates further so that the second layer 121 of the towed antenna 109 is unwound from the first rods 111. These first rods 111 are in turn removed by means of the magazine 135 from the drum 101.
18 Subsequently, the first layer 119 of the towed antenna 109 is unwound from the drum core 103 and at the unwound end of the towed antenna 109 an end of the second towing rope 139 is manually secured to the towed antenna 109. Subsequently, the second towing rope 139, the subsequent towed member 337 and the first pulling cable 335 is unwound from the second drum 101 of the winch 333 and let out into the water.
[69] The towing ship 330 tows the towed antenna 109 with the portions of soft cable stabilizers 110, which are not shown, on the first pulling cable 335 and the second pulling cable 339 through the water. The towed antenna 109 records underwater noises by means of the hydrophones 341.
[70] After the towing operation has ended, the first pulling cable, the connected towed member 337 and the second pulling cable 339 are wound on the second drum 101 of the winch 333 one after the other without the towed member being unhooked. When the end of the second pulling cable 339 is reached, on-board the towing ship 330 the towed antenna 109 is separated from the second pulling cable 339 and the towed antenna 109 is wound on the first drum 101. To this end, the towed antenna 109 is first wound on the drum core 103 in a first layer 119. Subsequently, the first rods 111 from the magazine 135 are inserted through the first 105 and second drum side wall and locked at that location. Subsequently, the first drum 101 rotates further so that the next portion of the towed antenna 109 is wound at the outer side of the first rods 111 to form a second layer 121. Subsequently, the four second rods 113 are inserted and fixed with greater spacing from the drum core 103 into the two drum side walls by means of the
[69] The towing ship 330 tows the towed antenna 109 with the portions of soft cable stabilizers 110, which are not shown, on the first pulling cable 335 and the second pulling cable 339 through the water. The towed antenna 109 records underwater noises by means of the hydrophones 341.
[70] After the towing operation has ended, the first pulling cable, the connected towed member 337 and the second pulling cable 339 are wound on the second drum 101 of the winch 333 one after the other without the towed member being unhooked. When the end of the second pulling cable 339 is reached, on-board the towing ship 330 the towed antenna 109 is separated from the second pulling cable 339 and the towed antenna 109 is wound on the first drum 101. To this end, the towed antenna 109 is first wound on the drum core 103 in a first layer 119. Subsequently, the first rods 111 from the magazine 135 are inserted through the first 105 and second drum side wall and locked at that location. Subsequently, the first drum 101 rotates further so that the next portion of the towed antenna 109 is wound at the outer side of the first rods 111 to form a second layer 121. Subsequently, the four second rods 113 are inserted and fixed with greater spacing from the drum core 103 into the two drum side walls by means of the
19 magazine 135. After fixing, a third layer 123 of the towed antenna 109 is wound on the four second rods along the outer side thereof. Subsequently, from the magazine 135, the four third rods are inserted and locked in the holes 115 in the two drum side walls, on which the uppermost layer of the towed antenna 109 is wound.
[71] Consequently, the towed antenna 109 with the soft cable stabilizers 110 is wound in a plurality of individual layers without the soft cable stabilizers 110 becoming damaged as a result of the weight of the towed antenna.
Damage to the hair cable stabilizers 310 of the first pulling cable 335 and the second pulling cable 339 as a result of the winding on the drum 101 according to the invention in this method for winding and unwinding a towed antenna is also prevented.
List of reference numerals 101 Drum 102 Frame 103 Drum core 105 First drum side wall 107 Drive 109 Towed antenna 110 Soft cable stabilizer 111 First rods 113 Second rods 115 Holes for third rods 119 First layer 121 Second layer 123 Third layer 135 Magazine 137 Guiding carriage 201 Drum 203 Drum core 205 Drum side wall 209 Towed antenna 210 Flexible strips 211 First upper half-shell 212 First lower half-shell 213 Second upper half-shell 214 Second lower half-shell 219 First layer 221 Second layer 223 Third layer 310 Hair cable stabilizer 330 Towing ship 223 Third layer 310 Hair cable stabilizer 330 Towing ship 331 Water surface 333 Winch 335 First pulling cable 337 Towed member 339 Second pulling cable 341 Hydrophones
[71] Consequently, the towed antenna 109 with the soft cable stabilizers 110 is wound in a plurality of individual layers without the soft cable stabilizers 110 becoming damaged as a result of the weight of the towed antenna.
Damage to the hair cable stabilizers 310 of the first pulling cable 335 and the second pulling cable 339 as a result of the winding on the drum 101 according to the invention in this method for winding and unwinding a towed antenna is also prevented.
List of reference numerals 101 Drum 102 Frame 103 Drum core 105 First drum side wall 107 Drive 109 Towed antenna 110 Soft cable stabilizer 111 First rods 113 Second rods 115 Holes for third rods 119 First layer 121 Second layer 123 Third layer 135 Magazine 137 Guiding carriage 201 Drum 203 Drum core 205 Drum side wall 209 Towed antenna 210 Flexible strips 211 First upper half-shell 212 First lower half-shell 213 Second upper half-shell 214 Second lower half-shell 219 First layer 221 Second layer 223 Third layer 310 Hair cable stabilizer 330 Towing ship 223 Third layer 310 Hair cable stabilizer 330 Towing ship 331 Water surface 333 Winch 335 First pulling cable 337 Towed member 339 Second pulling cable 341 Hydrophones
Claims (12)
1. A drum for a towed antenna having a drive and a drum core, wherein a first layer of the towed antenna is configured to be wound and/or unwound on the drum core, wherein with a first spacing with respect to the drum core, a first core element or a plurality of first core elements are arrangeable to allow a second layer of the towed antenna to be wound and/or unwound on the first core element or the plurality of first core elements and wherein a second core element or a plurality of second core elements are arrangeable with a second spacing from the drum core to allow a third layer of the towed antenna to be wound and/or unwound on the second core element or the plurality of second core elements.
2. The drum as claimed in claim 1, wherein an additional core element or a plurality of additional core elements are arrangeable with an additional spacing from the drum core to allow an additional layer of the towed antenna to be wound and/or unwound on the additional core element or the plurality of additional core elements.
3. The drum as claimed in claim 1 or 2, wherein the drum comprises a storage device for arranging the core element or the core elements on the drum or for removing the core element or the core elements from the drum.
4. The drum as claimed in any one of claims 1 to 3, wherein the drum comprises a securing device for fixing or releasing the core element or the core elements to or from the drum, respectively.
5. The drum as claimed in any one of claims 1 to 4, wherein the core element or the core elements comprise(s) one or more of a solid material, an angular pipe, a round pipe, an elliptical pipe, an elliptical cross-sectional surface-area, a half-shell, or a part-shell.
6. A winch for a towed antenna, wherein the winch comprises at least one drum as claimed in any one of claims 1 to 5.
7. A towed antenna for towing in water, wherein the towed antenna is wound on a drum for a towed antenna having a drive and a drum core, wherein a first layer of the towed antenna is wound on the drum core, wherein with a first spacing with respect to the drum core, a first core element or a plurality of first core elements is or are arranged so that a second layer of the towed antenna is wound on the first core element or the plurality of first core elements.
8. The towed antenna as claimed in claim 7, wherein the towed antenna comprises a flow element or a plurality of flow elements to allow the towed antenna to be wound and/or unwound in at least two layers without any damage to the flow element or the flow elements.
9. The towed antenna as claimed in claim 8, wherein the flow element or the flow elements comprise(s) a flexible material.
The towed antenna according to any one of claims 7 to 9, wherein the drum is as defined in any one of claims 1 to 5.
11. A water-borne vehicle for towing a towed antenna in water, wherein the water-borne vehicle comprises a drum as defined in any one of claims 1 to 5, or a winch as defined in claim 6, or a towed antenna as defined in any one of claims 7 to 10.
12. A method for winding and/or unwinding a towed antenna by means of a drum as defined in one of claims 1 to 5, or a winch as defined in claim 6, said method comprising the following steps:
in the case of unwinding the towed antenna - unwinding the uppermost layer of the towed antenna from an uppermost core element or from a plurality of uppermost core elements, - releasing a fixing of the uppermost core element or the plurality of uppermost core elements and removing the uppermost core element of the plurality of uppermost core elements from the drum, - unwinding the next-uppermost layer of the towed antenna by repeating the above-mentioned steps as far as the lowest layer of the towed antenna on a drum core, and/or in the case of winding the towed antenna - winding a lowest layer of the towed antenna on the drum core, - inserting a lowest core element or a plurality of lowest core elements with spacing with respect to the drum core into the drum and fixing the lowest core element or the plurality of lowest core elements, - winding the second-lowest layer of the towed antenna onto the lowest core element or the plurality of lowest core elements, - repeating the above-mentioned steps until sufficient layers for winding the towed antennas are provided.
in the case of unwinding the towed antenna - unwinding the uppermost layer of the towed antenna from an uppermost core element or from a plurality of uppermost core elements, - releasing a fixing of the uppermost core element or the plurality of uppermost core elements and removing the uppermost core element of the plurality of uppermost core elements from the drum, - unwinding the next-uppermost layer of the towed antenna by repeating the above-mentioned steps as far as the lowest layer of the towed antenna on a drum core, and/or in the case of winding the towed antenna - winding a lowest layer of the towed antenna on the drum core, - inserting a lowest core element or a plurality of lowest core elements with spacing with respect to the drum core into the drum and fixing the lowest core element or the plurality of lowest core elements, - winding the second-lowest layer of the towed antenna onto the lowest core element or the plurality of lowest core elements, - repeating the above-mentioned steps until sufficient layers for winding the towed antennas are provided.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016109108.1A DE102016109108A1 (en) | 2016-05-18 | 2016-05-18 | Drum for a towed antenna, winch, towing antenna and watercraft |
| DE102016109108.1 | 2016-05-18 | ||
| PCT/DE2017/100307 WO2017198252A1 (en) | 2016-05-18 | 2017-04-18 | Drum for a towed antenna/streamer, winch, towed antenna/streamer, and water vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3008468A1 CA3008468A1 (en) | 2017-11-23 |
| CA3008468C true CA3008468C (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3008468A Expired - Fee Related CA3008468C (en) | 2016-05-18 | 2017-04-18 | Drum for a towed antenna, winch, towed antenna and water vehicle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3458879A1 (en) |
| CA (1) | CA3008468C (en) |
| DE (1) | DE102016109108A1 (en) |
| WO (1) | WO2017198252A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019200756A1 (en) | 2019-01-22 | 2019-12-24 | Atlas Elektronik Gmbh | Deep adaptive towing sonar |
| DE102020203607A1 (en) | 2020-03-20 | 2021-09-23 | Atlas Elektronik Gmbh | Device for retrieving and / or deploying a towing antenna from a watercraft |
| DE102020206996A1 (en) | 2020-06-04 | 2021-12-09 | Thyssenkrupp Ag | Depth-variable towing sonar and procedures for operating |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0117186D0 (en) * | 2001-07-14 | 2001-09-05 | Qinetiq Ltd | Control device for controlling the position of a marine seismic streamer |
| US7510349B2 (en) * | 2006-04-20 | 2009-03-31 | Optoplan As | Ocean bottom seismic station installation |
| FR2925231B1 (en) * | 2007-12-18 | 2009-11-27 | Thales Sa | TRANSMIT SONAR ANTENNA WITH VERTICAL AXIS WINDABLE ON A WINCH |
-
2016
- 2016-05-18 DE DE102016109108.1A patent/DE102016109108A1/en not_active Withdrawn
-
2017
- 2017-04-18 CA CA3008468A patent/CA3008468C/en not_active Expired - Fee Related
- 2017-04-18 EP EP17724482.9A patent/EP3458879A1/en not_active Withdrawn
- 2017-04-18 WO PCT/DE2017/100307 patent/WO2017198252A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA3008468A1 (en) | 2017-11-23 |
| DE102016109108A1 (en) | 2017-11-23 |
| EP3458879A1 (en) | 2019-03-27 |
| WO2017198252A1 (en) | 2017-11-23 |
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| Date | Code | Title | Description |
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| EEER | Examination request |
Effective date: 20180614 |
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| MKLA | Lapsed |
Effective date: 20210419 |