NO335240B1 - Laying device for an underwater tow antenna. - Google Patents

Abstract

Disclosed is a deploying device that can be installed on a watercraft, particularly a submarine, is used for veering a tubular underwater trailing antenna (10), and comprises a storage drum (11) which receives the trailing antenna (10) and is driven by a motor so as to wind and unwind the trailing antenna (10), and a propulsion unit which grips the trailing antenna (10) and generates a tractive force (FA) on the trailing antenna (10) in the direction of deployment. In order to veer said trailing antenna (10) in a disturbance-free and unrestrained manner while keeping the mechanical wear thereof to a minimum, the trailing antenna (10) is directed via a motor-driven guide wheel (14) while a regulating device (20) is provided for synchronizing the driving motors (111, 141) of the storage drum (11) and the guide wheel (14) in a manner that is adapted to the tractive force (FA) acting on the trailing antenna (10) such that the section of the trailing antenna, which is located between the storage drum (11) and the guide wheel (14), is essentially stretched.

Description

The invention relates to a deployment device that can be installed on a water vessel, in particular a U-boat, for the deployment of a snake-like underwater towing antenna of the type defined in the introduction to patent claim 1.

In a known deployment device for a snake-shaped underwater tow antenna (DE 196 52 737 Cl), the drive unit acting on the tow antenna, which exerts a traction force acting in the direction of deployment on the tow antenna, has a deployment pipe through which the tow antenna is guided. A number of inflow nozzles led through the pipe wall are arranged on the laying pipe, which are connected to a high-pressure water pump. With the aid of the inflow nozzles, a water flow directed towards the delivery end of the laying pipe is provided between the pipe inner wall of the laying pipe and the towing antenna's hose sleeve. As a result of the strong water flow, the section of the hose-shaped towing antenna that is momentarily at hand in the laying pipe will be carried towards the delivery end as a result of the surface friction provided on the hose casing. In addition, the water flow provides a lubrication effect, as the towing antenna's hose casing will be surrounded by a film of water and not touch the pipe inner wall of the laying pipe, so that no significant frictional forces can arise which slow down the towing antenna's progress.

A dispensing device with a drive unit (EP O 124 133 Bl) is also known, with two soft-coated, oppositely running spill heads, between which the snake-shaped. trailing antenna is carried. The motor-driven game heads have frictional contact with both sides of the tow antenna and will move the tow antenna in the direction towards the delivery end of the laying pipe at the U-boat stern. Since the snake-shaped trailing antenna represents a relatively flexible structure and the antenna part between the drive device and the delivery end of the laying pipe at hand is pushed by the game heads, one cannot always be assured of a disturbance-free laying of the trailing antenna. In addition, the towing antenna will be exposed to a high mechanical stress from the game heads, which causes early wear and tear of the towing antenna's hose casing and thus causes the towing antenna to be rendered unusable at an early stage.

In GB 2369667 there is shown a drive assembly for a pulley comprising a first pulley with a cable extending around part of the pulley circumference. Three relatively small pulleys are mounted on the mounting body and a belt extends around the pulleys. The belt is driven and two of the small pulleys are placed on a string of the first pulley so that the tension in the belt tends to bias the belt to bear against the cable as it passes around part of the circumference of the first pulley located between the two small pulleys.

FR 2654716 shows winches for towing a "fish" equipped with a sonar behind a boat. The acceleration at the head of the boom is measured, and this measurement is used to control an automatic steering actuator which then changes the angle of the boom to minimize the value of said acceleration.

The purpose of the invention is to provide a delivery device of the type mentioned at the outset, which device enables a reliable disturbance- and obstacle-free firing of

the trailing antenna with minimal mechanical stress on the trailing antenna. This purpose is achieved according to the invention with the features stated in patent claim 1.

The delivery device according to the invention entails the advantage that during the four-way the control device will match the rotational angular speeds of the storage drum and the guide wheel in relation to that acting after the guide wheel on the towing antenna in the direction of extension

tractive force in such a way that the tractive force will be sufficient to be able to pull the trailing antenna section from the guide wheel unwound and between the guide wheel and the storage drum at hand from the guide wheel so that there is no suspension of the tow antenna between the guide wheel and the storage drum. Thereby, an associated dangerous impact during the firing is prevented. There will only be a slight mechanical friction on the trailing antenna, conditioned by the guide wheel, which will not cause damage to the trailing antenna's hose casing, even over a long period of time.

Appropriate embodiments of the Dispensing Device according to the invention, with advantageous further developments and embodiments of the invention, will proceed from the further patent claims.

According to a preferred embodiment of the invention, at least one force meter is arranged on the guide wheel, which senses the traction force acting on the towing antenna. The force measured with the force meter is supplied to the control device as a reference value. With the help of the force meter, the force acting on the towing antenna, the size of which will be subject to a certain width of variation and can, for example, rise sharply after the delivery end of the towing antenna has gone down into the vessel's stern water, is recorded very precisely.

As the storage drum has a significant axial length to enable a complete winding of the trailing antenna, and the trailing antenna is wound in several layers on the storage drum, the storage drum is assigned to a coiling carriage which can be moved motorically parallel to the drum axis and carries a pivoted coiling wheel for guiding the trailing antenna. According to an advantageous embodiment of the invention, the advance speed of the winding carriage is also regulated in dependence on the rotational angular speed of the storage drum by means of the regulation device.

According to an advantageous embodiment of the invention, the trailing antenna under the fairing is pulled through a guide tube with an inlet and outlet opening, and the guide wheel is arranged directly at the guide tube's entrance opening so that the trailing antenna section tangentially exiting from the guide wheel will be aligned coaxially with the normal to the entrance opening, i.e. coaxial with the guide tube axis, as that the trailing antenna running from the guide wheel will go directly and unhindered into the guide pipe.

According to an advantageous embodiment of the invention, the drive unit acts on the end of the tow antenna and includes an antenna end piece fixedly connected to the tow antenna, which end piece has a number of a rope axially, in the main immovably arranged, mutually spaced molded bodies which are designed to provide a flow resistance in the watercraft stern water. This has the advantage that when the end piece goes down into the stern water, a permanent pulling force will act on the towing antenna, which will depend on the vessel's speed during the delivery of the towing antenna and also be sufficiently large to be able to pull the towing antenna out of the guide tube.

According to an advantageous embodiment of the invention, the shaped bodies will be able to rotate on the rope, so that during towing in the stern water they will not produce any rotational moments on the towing antenna through the rope.

According to an advantageous embodiment of the invention, each mold body has a funnel with a funnel opening directed in the towing direction, as well as an end disc arranged on the end facing away from the funnel opening, protruding from the funnel jacket, the outer diameter of the end disc being preferably equal to the outer diameter of the funnel at the funnel opening. The open funnel shape in the towing direction of the shaped pieces with a subsequently arranged end disc will, in the free flow at a low speed of the watercraft, provide a sufficiently large flow resistance and thus a sufficiently high traction force on the towing antenna end.

According to an advantageous embodiment of the invention, the drive unit has a flush pipe with an inlet and outlet opening for the tow antenna, in which flush pipe a water pressure can be provided near the entrance opening. At the beginning of the fourring, the antenna end piece will lie in the flush pipe and the molded bodies will lie axially displaceable in the flush pipe so that they can be applied by the water pressure. As a result of this constructive design of the drive unit, a traction force acting in the laying direction on the towing antenna end will be provided already at the beginning of the towing, before the antenna end piece is partially or completely introduced into the stern water of the watercraft, because the outer diameter of the shaped pieces is only slightly smaller than the inner diameter of the flushing tube and the shaped pieces therefore will act as pistons which are incurred by the water pressure. In order to be able to build up the water pressure in the flushing pipe, an advantageous embodiment of the invention is provided with a flushing pump connected to the flushing pipe's water inlet, while the flushing pipe's inlet opening is closed with a sealing against the snake-like trailing antenna, preferably as a labyrinth seal.

According to an advantageous embodiment of the invention, on each mold piece, on the funnel jacket, axial steps are placed in the circumferential direction relative to each other, preferably offset by 90°. These extend from the hopper opening to the end disk, and their outer step lines running parallel to the tract axis have a radial distance from the tract axis that corresponds to the outer diameter of the end disk. On the funnel opening is a closing cone which has axial through openings. The end cone's cone shape, the axial steps and the end disc rounded at the circumference ensure that the shaped pieces center themselves in the flush pipe and do not hang due to tolerance-related irregularities in the flush pipe. The chosen length of the shaped pieces prevents an edge in the flush pipe. The end cone advantageously promotes the insertion of the antenna end piece into the flush pipe when the trailing antenna is taken in.

By the fact that, according to an advantageous embodiment of the invention, the moldings consist of a good sliding material, for example Teflon, the friction losses of the moldings in the flush pipe will be reduced, whereby the tractive force usable for the extraction of the towing antenna is increased.

According to an advantageous embodiment of the invention, the last molded body in the towing direction has a stop, preferably in the form of a one-piece, truncated cone-shaped closing part in one piece with the end disc, designed for closing the outlet opening of the flush pipe. This stop will prevent the antenna end piece being pulled out through the flush pipe when the towing antenna is hauled in. The impact of the closing part against the flush pipe can be sensed and used to stop the drive motors when the towing antenna is retracted.

According to an advantageous embodiment of the invention, the flush pipe is integrated in the guide pipe and axially limited displaceable there, against a spring force, so that the abutment abutment or the closing part abutment against the flush pipe can be released, before the drive motors are switched off.

The invention shall be described in more detail by means of an embodiment shown in the drawing.

Fig. 1 shows a principle sketch of a layout device for a towing antenna,

Fig. 2-5 shows a respective diagram for clarifying the operation of a regulation device in the layout device in fig. 1,

Fig. 6 shows a perspective view of the laying device in fig. 1,

Fig. 7 shows an enlarged section VII from fig. 6, without guide tube,

Fig. 8 shows a longitudinal section through a drive unit in the laying device of fig. 6, Fig. 9 shows a perspective view of a funnel part of a molded body in the drive unit of fig. 8,

Fig. 10 shows a view of the funnel part in the direction X of fig. 9,

Fig. 11 shows a section along the line XI-XI in fig. 10, Fig. 12 shows a view of an end cone that can be attached to the funnel part for the mold body in the drive unit in Fig. 8, and

Fig. 13 shows a section along the line XIII-XIII in fig. 12.

The one in fig. 1 basically shown and in fig. 6 shown in a perspective view, the layout device for a snake-like underwater towing antenna is installed on a water vessel not shown here, in particular a U-boat. The installation takes place for a U-boat between the water-permeable outer hull and the pressure hull. The towing antenna 10 consists in a known manner of a towing line and a tension cable which connects the towing line to the watercraft. The towline includes a fluid- or gel-filled hose sheath, in which there are a number of spaced electroacoustic transducers in a row. A damping module, a so-called VIM, is arranged between the tow line and the tension cable.

In its inactive state, the trailing antenna 10 is wound in several layers on a storage drum 11 that can be driven by means of a drive motor 11. The storage drum 11 has a substantial axial length, in order to make room for the relatively long trailing antenna 10 on the storage drum 11. The storage drum 11 is assigned a coiling carriage 12 that can be motorically moved parallel to the drum axis with a coiling wheel 13 mounted on it for rotation. The coiling wheel 13 will guide the trailing antenna 11 during winding and respectively unwinding from the storage drum 11, the coiling carriage 12 performing a controlled reciprocating movement along the storage drum 11.1 a distance from the storage drum 11 is a guide wheel 14 is arranged in the direction towards the stern of the watercraft. This is rotatably stored in a stand 15, which in turn is fixedly arranged in a in fig. 1 schematically indicated frame or platform 16. Between the stand 15 and the platform 16 there is arranged at least one, in the embodiment two shown in 5, force meter 17, which respectively measures a change in the bearing force exerted by the stand 15 against the platform 16. The guide wheel 14 is motorized, and for this at least one electric motor 141 is arranged. The towing antenna 10 goes from the storage drum 11 over the spool wheel 13 and the guide wheel 14 and is guided through a guide pipe 18 which has an entrance opening 181 exit opening 182, and one behind the stern of the watercraft in the open water. The guide wheel 14 is arranged directly at the entrance opening 181 to the guide wheel 18, so that the antenna section running off tangentially from the guide wheel 14 will be directed coaxially in relation to the normal to the entrance opening 181, so that the trailing antenna 10 thus goes coaxially into the guide tube 18. the end of the towing antenna 10, more precisely on the end of one also arranged here, with the towing string-connected damping module (VIM), exert a traction force FA. This traction force FA pulls the towing antenna 10 through the guide tube 18. The traction force Fa is provided by means of a drive unit 19 which will be explained in more detail below.

For disturbance-free and obstacle-free firing or deployment of the towing antenna 10, a control device 20 is arranged which synchronizes the drive motors. 111 and 141 respectively to the storage drum 11 and the guide wheel 14 in adaptation to the traction force FA sensed by the force meter 17, 35 so that the towing antenna section that is at hand between the storage drum 11 and the guide wheel 14 will in the main case be stretched, i.e. go there without sagging. The rotational angular velocities Vt and Vf of the storage drum 11 and the guide wheel 14, respectively, are thereby adapted to the traction force Fa so that this will be able to pull it from the storage drum 11 with the help of the motor 111 unwound trailing antenna length through the guide tube 18 without the trailing antenna 10 "stacking up" in front of the guide wheel 14 or at the guide pipe 18. The pull-out force Fa sensed in the force meter 17 will be used in the control device 20 as a guide value for setting the rotational angular speeds Vtog Vf to the storage drum 11 and the guide wheel 14.1 in this connection, the guide value FA is supplied to a first regulator 21 in the control device 20. This regulator 21 is also supplied with the actual rotational angular velocities VFistog Vrist from the guide wheel 14 and the storage drum 11, which actual rotational angular velocities are sensed by means of respective rotary encoders 22 and 23 respectively at the guide wheel 14 and the storage drum 11. The guide wheel 14 and the storage drum 11 respective set angular speed Vfsoii and Visoii are calculated using the set value Fa and the drive motors 111 and 141 of the storage drum 11 and the guide wheel 14 are correspondingly regulated via the set value outputs of the control device 20. The characteristics of the controls are shown in fig. 2 and 3. If the traction force FA increases, then the target value of the storage drum 11 rotational angular velocity Vt is also increased, as well as the target value of the guide wheel 14 rotational angular velocity Vf. The increase is linear. At the same time - as shown with the characteristic in fig. 4 the guide wheel 14 superimposed a positive slur s, which decreases with increasing guide value and which ensures the slack-free stretching of the section of the towing antenna 10 between the guide wheel 14 and the storage drum 11 at hand.

By means of a second regulator 24 in the regulation device 20, the advance speed Vs of the winding carriage 12 is regulated as a function of the angular speed Vt of the storage drum 11. For this, the second regulator 24 is supplied with the storage drum 11's shell rotational speed Vtsoi as well as the spooling carriage's 12's advance speed VsiSr. The latter is recorded by means of a rotary sensor 25, which senses the rotational angular speed of a gear output shaft or the motor's 121 output shaft. The target advance speed Vsson is regulated via the corresponding target value output in the drive motor 121. Fig. 5 shows the characteristics of the second regulator 24, where the characteristic a applies as long as the trailing antenna 10 is pulled by the upper of a total of three winding layers, and the characteristic b applies for the underlying two, i.e. the second and first wrapping layer. The first wrapping layer includes exclusively the towing antenna's extension cable.

The drive unit 19 for providing the traction force fa on the extension end of the tow antenna 10 is shown in fig. 6 and 7 and in longitudinal section in fig. 8. The unit includes an antenna end piece 26 firmly connected to the trailing antenna end, as well as a flush tube 40 integrated into the guide pipe 18, where the antenna end piece 26 lies when the trailing antenna 10 is pulled in and wound up on the storage drum 11. As shown in fig. 8, the antenna end piece 26 has a number of shaped bodies 27 which are arranged at mutual distances on a rope 28 fixedly connected to the towing antenna 10, in an essentially axially immovable manner. The device is such that the shaped bodies 27 can rotate around the rope 28. For simplification, the end thickness 26 in fig. 8 shown directly connected to the trailing antenna 10, more precisely with its VIM. To enable a simple exchange of the end piece 26 and type of towing antenna 10, the rope 28 is attached to a hose part belonging to the end piece 26, which in turn is connected to the towing antenna's VIM. The hose part includes a liquid or gel-filled, elastic hose jacket, which is stiffened using aform pieces. A loosely pulled in rope prevents excessive stretching of the hose jacket.

The molded bodies 27 made of a good sliding material, for example Teflon, are identically designed. Each molded body 27 is two-part and is assembled by an elongated funnel part 29, which is shown in detail in fig. 9-11, and of an end cone 30, which is shown in fig. 12 and 13 in an end view respectively

longitudinal section. In the funnel part 29, a funnel 31 is formed with a funnel opening 32 directed in the towing direction, as well as an end disc 33 arranged at the end of the funnel part facing away from the funnel opening 32, which extends radially out relative to the funnel jacket 311. The outline edges of the end disc 33 are rounded against the two disc rafts . The roundings are in fig. 11 denoted by 331. In front of the funnel opening 32, a cylindrical ring edge 34 is arranged, the inner diameter of which is equal to the diameter of the funnel opening 32 and the outer diameter of which is equal to the outer diameter of the end disc 33, which in the design example is approximately half as large as the axial length of the funnel part 13. On the funnel mantle 311, there are four axial steps 35 offset from each other by 90° in the circumferential direction, which extend from the ring edge 34 and to the end disk 33. The outer pitch line 351 of the axial steps 35, which pitch line runs parallel to the track axis, has a radial distance from the track axis which is equal to the outer radius of the end disk 33 and the ring edge 34. In the end disc 33, a central through bore 36 is arranged which opens into the bottom of the funnel.

The closing cone 30 arranged on the funnel part 29 has three axial through-holes 37 and a central through-hole 38 arranged around the circumference 120° offset from each other. The through-holes 37 are so large that practically only steps remain between them, which steps are arranged in a star shape. In the center of the star is the through bore 38. From the end of the end cone 30 facing away from the funnel opening 32, an annular step 39 projects, the outer diameter of which is slightly smaller than the inner diameter of the annular edge 34 of the funnel part 29, so that the end cone 30 can be pushed form-fitting into the annular edge of the funnel part 29 34 with its ring step 29. After the passage of the rope 28 in the passage openings 37 and 38, the funnel part 29 and the end cone 30 are firmly connected to each other, for example by means of several screw connections placed radially around the circumference between the ring edge 34 and the ring step 39. The axial retention of the mold bodies 27 on the rope 28 is realized, for example, by means of knots on the rope 28, as a respective rope knot will rest against the bottom of the funnel and the base surface of the closing cone 30.

The wash pipe 40 in the drive unit 19 has an entrance opening 401 and an exit opening 402 for the towing antenna 10 (fig. 7 and 8) and is drawn into the guide pipe 18 and is held limited axially displaceable in the guide pipe 18 against the force of a pressure spring 41. The exit opening 402 of the wash pipe 40 lies at or near the outlet opening 182 of the guide pipe 18. A Y-pipe branch 42 is attached to the inlet opening 401 of the flush pipe 40, which is firmly connected to the flush pipe 40 and the guide pipe 18 by means of a screw sleeve 43. the trailing antenna 10 is introduced, as a labyrinth seal 44 largely ensures a pressure-tight seal between the pipe inner wall and the trailing antenna's 10 hose jacket. The other, with an acute angle relative to the pipe connection 421, connecting pipe connection 422 in the Y-pipe branch 42 forms a water inlet 45 and is connected to a flushing pump 47, only schematically indicated here, which can provide a water pressure in the flushing pipe 40. When the towing antenna 10 is completely wound on the storage drum 11, at the end of the towing antenna 10, with the help of the rope 28 attached antenna end piece 26, will be pulled completely into the spray pipe 40 with its shaped bodies 27. The end of the towing antenna 10, respectively the hose part of the antenna end piece 26 connected to the towing antenna 10, protrudes into the inlet opening 401 of the flush pipe 40. When the trailing antenna 10 or the hose part enters the pipe socket 421 in the Y-pipe branch 42, a labyrinth seal 44 will provide a seal between the pipe inner wall and the snake-shaped trailing antenna 10 or the hose part. The molded bodies 27, whose outer diameter is only slightly smaller than the inner diameter in the flushing pipe 40, are guided in the flushing pipe 40 by means of the end disk 33, the ring edge 34 and the axial steps 35 and will, as a result of the material used for the manufacture, have a good sliding ability. If a water pressure of e.g. 2-3 bar in the flush pipe 40, then the shaped bodies 27 will act as pistons, which are displaced in the direction towards the outlet opening 402 of the flush pipe 40 under the influence of the water pressure and thereby via the rope 28 provide a traction force Fa on the towing antenna 10. After the exit opening 402 of the flush pipe 40 has been reached , the shaped bodies 27 will successively exit the flushing tube 40 and into the stern water of the watercraft. The antenna end piece 26 which is completely pulled out of the flushing pipe 40 will then, on the basis of the flow resistance it has in the water, provide the traction force Fa/ which is determined by the flow resistance and the towing speed of the watercraft. This pulling force ensures that the towing antenna 10 can be pulled through the flushing pipe 40 in an undisturbed way, until the towing antenna lies with its full length in the water and is connected at its front end to the storage drum 11 placed on the watercraft by means of the likewise extended extension cable. When the trailing antenna 10 is pulled in and wound up on the storage drum 11, the shaped bodies 27 in the antenna end piece 26 will easily allow themselves to be led into the flushing tube 40 as a result of the closing cones 30 placed in front of the respective funnel part 29. On the last shaped body 27 in the antenna end piece 26 a truncated cone-shaped closing part 46 is arranged. This is designed for closing the exit opening 402 of the flushing pipe 40 and forms a stop for limiting the retracting movement of the towing antenna 10. The closing part 46 is attached to the end disc 33. Alternatively, it can be attached to the rope 28 or be designed in one with the end disc 33. If the antenna end piece 26 is fully retracted, the closing part 46 will rest against the flush tube 40, and the flush tube 40 is displaced in the guide tube 18 against the force of the pressure spring 41. The axial displacement of the flush tube 40 or the increased spring force in the pressure spring 41 is sensed and a disconnection signal is generated for the motors 111, 121 and 141 for the storage drum 11, the winding carriage 12 and the guide wheel 14, respectively.

Claims (25)

1. On a water vessel, in particular a U-boat, installable deployment device for firing a snake-like underwater towing antenna (10), with a towing antenna (10) receiving storage drum (11), which is motorized for winding and unwinding the towing antenna (10), and with a drive unit (19) acting on the towing antenna (10), which exerts a pulling force (Fa) acting in the dispensing device on the towing antenna (10), characterized in that the towing antenna (10) is guided over a motorized guide wheel (14) and that there is provided with a regulation device (20), which synchronizes the drive motors (111,141) of the storage drum (11) and the guide wheel (14) during firing so in adaptation to the traction force (Fa) acting on the towing antenna (10) that the towing antenna section (10) that is at hand between the storage drum (11) and the guide wheel (14) will essentially be stretched. 2. Laying device according to claim 1, characterized in that at least one force meter (17) is arranged on the guide wheel (14), which senses the traction force (Fa) acting on the towing antenna (10), and that the force measured by the force meter (17) is supplied to the regulation device ( 20) as a guide value. 3. Laying device according to claim 2, characterized in that the required rotational angular speed of the storage drum (11) and the required rotational angular speed of the guide wheel (14) are determined and regulated by means of the guide value, and that the required rotational angular speed of the guide wheel (14) is superimposed on a slur which decreases with the increase of the traction force (Fa ). 4. Laying device according to one of the claims 1-3, characterized in that the storage drum (11) is assigned to a coiling carriage (12) which can be moved by motor in parallel with the drum axis, with a coiling wheel (13) mounted on it for rotation, for guiding the towing antenna (10) during the unwinding from and winding on the storage drum (11 ), and that the advance speed of the winding carriage (12) is regulated in dependence on the rotational angular speed of the storage drum (11). 5. Laying device according to one of the claims 2-4, characterized in that the rotational angular velocities of the storage drum (11) and the guide wheel (14), respectively, are registered by means of rotary encoders (23,22). 6. Laying device according to claim 4 or 5, characterized in that the advance speed of the coiling carriage (12) is recorded by means of a rotary encoder (25) which senses the speed of the output shaft of the drive motor (121) or the gear shaft of a forward gear. 7. Laying device according to one of claims 2-6, characterized in that the guide wheel (14) is pivoted in a stand (15) and that at least one force meter (17) is arranged between the stand (15) and a platform (16) that supports the stand (15). 8. Laying device according to one of claims 1-7, characterized in that the towing antenna (10) can be pulled through a guide pipe (18) which has an entrance and an exit opening (181, 182), and that the guide wheel (14) is arranged in this way directly at the entrance opening ( 181) that the section of the trailing antenna (10) running tangentially from the guide wheel (14) will be aligned coaxially with the normal of the entrance opening (181). 9. Deployment device according to the introduction in claim 1, in particular according to one of claims 1-8, characterized in that the drive unit (19) acts on the end of the trailing antenna (10) and has an antenna end piece (26) firmly connected to the trailing antenna, which end piece (26) includes a number of on a rope (28) axially, essentially immovably arranged, mutually spaced molded bodies (27), which are designed to provide a flow resistance in the stern water of the watercraft. 10. Laying device according to claim 9, characterized in that the shaped bodies (27) are arranged to be rotatable around the rope (28). 11. Laying device according to claim 9 or 10, characterized in that each molded body (27) has a hopper (31) with a hopper opening (32) directed in the towing direction as well as an end located at the end facing away from the hopper opening (32), protruding above the hopper jacket (311) end disc (33). 12. Laying device according to claim 11, characterized in that the outer diameter of the end disc (33) is equal to the outer diameter of the funnel (31) at the funnel opening (32). 13. Laying device according to claim 12 or 13, characterized in that the hopper jacket (311) is attached in the circumferential direction to each other, preferably 90° shifted axial steps (35), which axial steps (35) extend from the hopper opening (32) and to the end disc (33) and which run parallel to the tractive axis, outer step lines (351) have a radial distance from the tractive axis that corresponds to the outer radius of the end disk (33). 14. Laying device according to one of claims 11-13, characterized in that the end disk (33) is rounded on the circumference towards both disk sides. 15. Laying device according to one of the claims 11-14, characterized in that an end cone (30) provided with axial passage openings (37) is attached to the hopper opening (32), and that in the end cone (30), in the bottom of the hopper and in the end disc (33) arranged a respective central through bore (38, 36) for the rope (28), the bore diameter being larger than the outer diameter of the rope (28). 16. Laying device according to claim 15, characterized in that an annular edge (34) is arranged in front of the funnel opening (16) with an inner diameter that corresponds to the diameter of the opening in the funnel opening (32) and with an outer diameter that corresponds to the diameter of the end disk (33), and that at the closing cone (30) end on the side of the funnel opening axially protrudes a ring step (39) which can be pushed form-fitting into the ring edge (34). 17. Laying device according to claim 16, characterized in that the diameter of the base surface of the end cone (30) is equal to the outer diameter of the ring edge (34). 18. Laying device according to one of claims 9-17, characterized in that the molded bodies (27) consist of material with good sliding properties, preferably Teflon. 19. Laying device according to one of the claims 9-18, characterized in that the drive unit (19) includes a flush pipe (40) with an entrance and exit opening (401, 402) for the towing antenna (10), in which flush pipe (40) at or near the entrance opening (401) a water pressure is provided, and that the antenna end piece (26) lies in the flush pipe (40) at the beginning of a ring and its shaped body (27) has an axially displaceable guide in the flush pipe (40) and can be subjected to the water pressure. 20. Laying device according to claim 19, characterized in that the flushing pipe (40) has at least one water inlet (45), which water inlet (45) is connected to a flushing pump (47). 21. Laying device according to claim 19 or 20, characterized in that the flushing pipe (40) on its entrance opening side is closed with a seal that seals against the snake-like trailing antenna (10), preferably a labyrinth seal. 22. Laying device according to claim 20 or 21, characterized by the fact that the flushing pump (47) can be switched on and off depending on the tow antenna (10) firing. 23. Layout device according to one of claims 9-22, characterized in that a stop is arranged on the last mold body (27) in the towing direction. 24. Laying device according to claim 23, characterized in that the stop is designed as a preferably shrink-cone-shaped closing part (46) for closing the exit opening (402) of the flush pipe (40). 25. Laying device according to one of the claims 19-24, characterized in that the flush pipe (40) is pulled into the guide pipe (18), and 15 is preferably axially limited displaceable in it against a spring force.