(57) Abstract:Usage: shipbuilding, in particular, thrusters. Essence: thruster is made in the hull boats in channel 1 with the working body 3, preferably with a paddle screw. Channel 1 is made of two or three sections that are installed with a clearance of 5 relative to each other. The working body 3 is installed in one of the sections. The inner cavity of the channel through each gap is in communication with the outside environment. The ends of the walls 6 of the sections of the channel facing the gap, bent outward from the inner cavity of the channel. 1 C. p. F.-ly, 4 Il. The invention relates to shipbuilding, in particular, to the thruster devices thrust.Known thruster containing the working body, mainly propeller mounted in a channel made in the underwater part of the hull boats (see USSR author's certificate N 787267, CL 63 N 25/46, publ. 1980). This device is selected as the closest analogue of the invention. It enhances operational capabilities, but does not increase the hydrodynamic characteristics.The technical result of the invention is to improve affta channel made of two or three sections, installed with a gap relative to each other, and the working body is installed in one of the sections, and the inner cavity of the channel through each gap is in communication with the outside environment at the ends of the wall sections of the channel facing the gap, bent outward from the inner cavity of the channel.In addition, the section of the channel in which is mounted a working body, made in cross-section smaller sections that do not contain it.In Fig.1 shows a thruster with a single gap, constant cross-section channel and the working body of the propeller screw; Fig.2 is the same, with two gaps and a constant cross-section channel of Fig.3 is the same, with two gaps and changes in the channel cross section between the gaps; Fig.4 is the same, with two gaps of the channel, which is a section containing the working body, made in the form of the guide nozzle.Shown in Fig.1 thruster includes channel 1, located inside the housing 2 floating working body of the screw 3 with the actuator 4, the inside of the channel. The channel has an annular gap 5, the wall of the channel 6 in the area of the gap bent outward relative to the axis of the channel. Limited outer casing Mezhdunarodnoe space 7 is filled with water and soo is shown in Fig.2 thruster has two gap 5 and 10 in the channel.In Fig.3 shows the channel of the thruster with two gap 5 and 10, and sections of channel 1 and 11 have a cross section greater than the section of the channel 12 in which is located the screw 3.In Fig.4 shows the channel thrusters with two gap 5 and 10, and the section of the channel in which is mounted a propeller 3, made in the form of the guide nozzle 13.When working thrusters with one gap and a constant cross section of the channel to create a thrust on the left side (Fig.1) the actuator 4 causes the rotation of the screw 3 so that the channel 1 generates a stream on the right Board. This, along with the entrainment of fluid from the suction space 8 through the entrance to the canal, is the entrainment of water to the propeller through the gap 5 of mezhdunarodnogo space 7, which, in turn, the liquid enters from outside of the space 8 through the openings 9 in the outer case 2.If necessary, create a thrust to starboard, the actuator 4 rotates the screw 3 in the opposite direction, the flow in the channel 1 is directed to the left (Fig. 1). The gap 5 in this case does not affect the flow in the channel, which occurs as if the channel was solid.If the channel is constantly the initial Board, the flow in the channel is directed to the right, the gap 5 podsushivaet liquid, the gap 10 no, when reversing device, the picture will change to the opposite.The thrusters (Fig. 3) the cross section of the channel at the site I and II is greater than at site 12. When creating such a traction device on the port side propeller 3 generates in the channel of the stream to the right.In the gap 5 at the expense of discharging water is sucked to propeller screw, as described above. When reversing device flow in the channel is directed to the left. Due to the large cross-sectional area of channel 1 due to the ejection effect of the fluid on the same tract is sucked into the channel 1 through the gap 5.Set forth is true for the gap 10 and section of the channel 11. In this case, if there are two gaps of 5 and 10 in the channel thrusters suction fluid in the channel occurs through both the gap, one due to vacuum through the second due to ejection. When reversing device, the picture will change to the opposite.The thrusters (Fig.4) the section of the canal in the vicinity of the propeller 3 is made in the form of the guide nozzle 13. This thruster gaps 5 and 10 function analeese for propeller and extending from the screw threads. 1. THRUSTER containing the working body, mainly propeller mounted in a channel made in the underwater part of the hull of the watercraft, wherein the channel is made of two or three sections, mounted with clearance relative to each other, and the working body is installed in one of these sections, and the inner cavity of the channel through each gap is in communication with the outside environment at the ends of the wall sections of the channel facing the gap, bent outward from the inner cavity of the channel.2. The device under item 1, characterized in that the section of the channel in which is mounted a working body, made in cross-section smaller than the section that does not contain it.
FIELD: shipbuilding; fore and aft thrusters.
SUBSTANCE: proposed water-jet thruster has water scoop, axial-flow pump with T-piece located behind it and provided with curvilinear blades secured turnably for shutting-off one of outlet passages. When blades shut-off one of outlet passages, their convex surfaces are directed towards other of them. Each blade is made in form of wing on side of pump and bent plate following it. When outlet passage is open, wings are located at angle relative to incoming flow. Upper surface of wing is directed towards opposite side; lower surface of wing is provided with artificial roughness.
EFFECT: increased transversal thrust; reduced power requirements.
FIELD: shipbuilding; active control of ships.
SUBSTANCE: proposed rotary propulsive screw-rudder is made in form of water-jet propeller and is provided with streamlined symmetrical vertical nozzle which has water duct made in form of rectangular vertical slit over entire span in center of nozzle. Working member mounted in water duct consists of two vertical rotors for rotation at reversal; working member is mounted in symmetrical cylindrical recesses over entire span of nozzle. Vertical flap mounted at water duct outlet has symmetrical convex profile for turn relative to vertical axis lying in plane of symmetry of nozzle. Vertical flap is mounted at equal clearances between trailing edges of water duct and external convex surfaces of flap profile when it is placed in plane of symmetry of nozzle. Each clearance ensures limitation of flap putting-over.
EFFECT: enhanced handling of ship due to considerable lateral force on flap owing to Coanda effect.
SUBSTANCE: in compliance with proposed method, fluid flows forced from nozzles, holes or slits of, at least, one pipe to on one or more surfaces of body. Note here that fluid flows are injected from nozzles, holes or slits on over one or more body surfaces from the surface front edge thus creating pressure potential on the body surface just between the front and rear edges. Here, note that, at least, one pipe is revolved about its axis. The proposed system, designed to create potential on the body surface using fluid flows forced from nozzles, holes or slits of, at least, one pipe to on one or more surfaces of body to set it moving, to control it or make it manoeuvring, comprises, at least, one pipe with nozzles, holes or slits in its wall. The said pipe is located along the body edge, thus forming its front edge from which the flows passing nearby, at least, one body curved surface reduce pressure on the said surface and produce potential relative to its opposite arbitrary-shape surface. Note here that, at least, one pipe revolves about its axis. It is preferable for the said system to have the surface over which the said flows pass made convex and with one curvature. The pipes can be protected by vertical body arranged between the pipes and parallel to them. The said body can be attached to airship. In this case, the body increased pressure side is furnished with plates hinged to front edge of the said pipes. Note that the plates' motion is damped by shock absorbers.
EFFECT: reduced bow wave, ruling out dynamic losses caused by propeller in manoeuvring.
5 cl, 1 dwg
SUBSTANCE: manoeuvring propulsion device comprises two screws arranged in nacelle on cowl strut in through channel and drive engine, extra props fitted at cowls on nacelle edges.
EFFECT: higher efficiency, lower poser consumption for screw driving.
3 cl, 2 dwg
SUBSTANCE: invention refers to the area of shipbuilding, is related to ice-breaking vessel thrusters and ice-breaking vessels themselves, and may be used for maneuvering in open water and in mooring mode under the conditions of ice brush. An ice-breaking vessel is proposed. The vessel is equipped with a thruster, a hydraulic blower of which the pumping unit of the fire extinguishing system with two output tubes, one of which blows water to the starboard side and the second, to the port side, the ends of board-output pipelines equipped with the propulsion nozzles located in the hull with orientation of its longitudinal axes aslant the vessel centerline with the maximum possible distancing of nozzles from the midship frame under water; there are stop check valves installed in the output segments of the pipelines equipped with drives connected to the central control console of the ice-breaking vessel.
EFFECT: invention allows improving reliability of an ice-breaking vessel accompanied by improvement of strength performance of its hull, as well as reduction of costs for construction of an ice-breaking vessel.
SUBSTANCE: water vessel undercarriage device comprises a standard shaft with a propeller screw on it, and is provided with at least one additional shaft with a propeller on it, coaxially to the standard shaft, and with a variable and different from the standard shaft rotational speed. At least one additional plane of the rotary water craft with horizontal and vertical control is provided in the way of flow, which forced by the second auxiliary propeller. Additional plane has a surface of profile curvature similar in shape to the discharge flow outer isobar.
EFFECT: increased reliability of the water vessel undercarriage, increased total force on the propeller shaft without increasing of propulsor working places across the vessel width.
2 cl, 3 dwg