CN210212659U - Bulbous bow with active controllable wings for deep V-shaped ship - Google Patents
Bulbous bow with active controllable wings for deep V-shaped ship Download PDFInfo
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- CN210212659U CN210212659U CN201920518585.4U CN201920518585U CN210212659U CN 210212659 U CN210212659 U CN 210212659U CN 201920518585 U CN201920518585 U CN 201920518585U CN 210212659 U CN210212659 U CN 210212659U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Abstract
The utility model discloses a bulb bow that is used for dark V type ship to have active controllable wing, fixed mounting has the steering wheel in the bulb bow, install the gear in the steering wheel left and right sides, the gear outside is connected with the rudderstock transmission, the rudderstock stretches out outside the bulb bow and hydrofoil fixed connection, install axle YX type O type circle with the hydrofoil junction at the rudderstock, guarantee the device water proofness, screw fixed mounting is in boats and ships focus department for the gyroscope, be used for monitoring the size of boats and ships longitudinal angle, then give information feedback to the controller of fixed mounting in the gyroscope rear side, controller control steering wheel adjustment hydrofoil's angle of attack α, make the hydrofoil obtain great vertical motion damping, lift and with the moment of shaking the opposite direction, improve boats and ships wave resistance, rapidity and travelling comfort.
Description
Technical Field
The utility model relates to an install active controllable hydrofoil in bow bulb bow department, specifically be an active controllable hydrofoil of drag reduction rolling.
Background
When a ship sails in waves, six-degree-of-freedom swaying motion can occur, wherein pitching, rolling and heaving have great influence on the maneuverability, wave resistance and comfort of crew of the ship. The active controllable hydrofoils are arranged at the bulb bow of the bow bulb, so that the vertical motion damping is increased, the moment opposite to the pitching direction is obtained, the wave resistance of the ship is improved, and in navigation of the ship, due to the pressure difference between the upper part and the lower part of the hydrofoils, the upward lift force is generated, the ship resistance is reduced, and the ship rapidity is improved.
The Chinese patent application No. 201110439755.8 is named as 'an axe-shaped bow high-speed boat type with a submerged body', the submerged body is arranged at the lower part of a stem and is positioned below a waterline and close to a keel, so that the vertical motion damping of the boat is increased, the wave interference force borne by the bow is relatively reduced, and the vertical motion response of the boat in waves is reduced. But because the adopted semi-submersible body has larger drainage volume, the resistance is increased, the effective frequency band range is narrower, and the effect is poorer in the longer wavelength range and the shorter wavelength range.
The Chinese patent application No. 201220618479.1, entitled "split open type controllable anti-rolling water tank structure", the number of water tanks is set at least more than one, when the gravity moment produced by the water tanks and the acting force moment on the ship produced by the wave are opposite, the water tanks play the role of anti-rolling. However, the anti-rolling tank can generate enough restoring moment only when reaching a certain volume, so that the anti-rolling tank occupies a large space on the ship, and the anti-rolling tank can play a certain effect. Above-mentioned patent structure is more complicated, and it is great or have great influence to the boats and ships performance to change the range to the hull, and can not accurate control boats and ships pitch and improve boats and ships rapidity, compares with above-mentioned patent, and this patent can compensate above weak point, and the feasibility of engineering realization is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at further improving the rapidity and the wave resistance performance of boats and ships, and then an active controllable hydrofoil 1 of design, this hydrofoil 1 adopts active control's mode, realizes that hydrofoil 1 shakes the accurate suppression of rocking to boats and ships.
The utility model provides a following technical scheme:
a bulbous bow with active controllable wings for a deep V-shaped ship comprises a gyroscope 7 arranged at the center of gravity of a ship body 9 of the ship and a controller 8 fixedly arranged behind the gyroscope 7, and is characterized in that the longitudinal section of the bulbous bow 6 is streamline, and the cross section is oval;
the end part of the rudder stock 3 is fixedly connected with a hydrofoil 1;
the longitudinal section of the hydrofoil 1 is a streamline section, and the attack angle between the hydrofoil 1 and the horizontal plane is α;
the controller 8 is an ARM series single chip microcomputer and is responsible for controlling the action of the steering engine 5 so that the attack angle α between the hydrofoil 1 and the horizontal plane can be adjusted within the range of 0-3 degrees, and the ship can run under the optimal attack angle α;
the gyroscope 7 is used for monitoring the longitudinal rocking angle of the ship and feeding monitoring information back to the controller 8.
Further, preferably, gears 4 are installed on the left side and the right side of the steering engine 5, and the outer sides of the gears 4 are in transmission connection with the rudder stock 3.
Further, preferably, a shaft YX-shaped O-ring 2 is further attached to the joint between the rudder stock 3 and the hydrofoil 1.
Preferably, the streamline section of the hydrofoil 1 is of a NACA type, the maximum thickness of the NACA type section is located at a position 30% of the section chord length away from the front edge, the thickness ratio is 12%, and the aspect ratio is 6.
Further, preferably, the controller 8 is an ARM series single chip microcomputer, and is specifically configured as,
when the ship is in an accelerated sailing state, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate, and the attack angle alpha of the hydrofoil 1 is adjusted to be within the range of 2-3 degrees;
when the ship sails in waves, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate, and adjusts an attack angle alpha of the hydrofoil 1, so that the hydrofoil 1 obtains large vertical motion damping and moment opposite to a pitching direction, a bow amplitude and vertical motion acceleration are reduced, and the generation of pitching, rolling and heaving of the ship is inhibited;
when the ship is in a deceleration state, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, and adjusts the attack angle a of the hydrofoil 1 to 0 °.
Further, it is preferable that the discharge volume of the bulbous bow 6 is 2551.25m3
Further, preferably, the major axis of the ellipse of one quarter of the cross section of the bulbous bow 6 is 13m, and the minor axis is 11 m; at one half of the ellipse, the major axis of the ellipse is 8.5m long, and the minor axis is 6.6m long; at three fourths of the ellipse, the major axis of the ellipse is 5.5m, and the minor axis is 3.8 m.
Further, preferably, the bulbous bow 6 is of a drop-shaped structure.
Further, the utility model discloses a control method that is used for the bulbous bow of active controllable wing that has of dark V type ship, includes following step:
(A) when the ship accelerates to navigate, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate, and adjusts the attack angle alpha of the hydrofoil 1 to be within the range of 2-3 degrees, so that the hydrofoil 1 obtains an upward large lift force, the wet surface area of the ship is reduced, the ship resistance is reduced, and the ship can quickly reach an appointed navigation speed state;
(B) when the ship navigates under a complex sea condition, the gyroscope 7 monitors the size of a pitch angle and feeds back the pitch angle to the controller 8, the controller 8 controls the steering engine 5 to rotate the rudder stock 3 and adjusts the attack angle alpha of the hydrofoil 1 to obtain a longitudinal moment for inhibiting the pitch, reduce the heading motion amplitude and the heading motion acceleration, and at the moment, the hydrofoil 1 can also reduce the heave and roll of the ship;
(C) when the ship decelerates, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, adjusts the attack angle α of the hydrofoil 1 to 0 degree, increases the wet surface area of the ship, further increases the ship resistance, and reduces the ship speed.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the size of a ship pitch angle is monitored through a gyroscope 7, then a controller 8 controls a steering engine 5 to enable a rudder stock 3 to rotate, the attack angle alpha of a hydrofoil 1 is adjusted, vertical motion damping is increased, a moment opposite to the pitch direction is obtained, a bow motion amplitude and a bow acceleration are reduced, accurate suppression of ship pitch, roll and heave is achieved, and the wave resistance performance of the ship is improved.
2. By adjusting the variable attack angle alpha of the hydrofoil 1, the lift force of the hydrofoil 1 is increased, the bow is lifted, the wet surface area of the ship is reduced, the friction resistance is reduced, the total resistance of the ship is reduced, the power consumption of a host is saved, and the effects of energy conservation and emission reduction are achieved.
3. The size of the pitching angle is monitored through the gyroscope 7, then the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate, certain flexibility is achieved in adjustment of the hydrofoil 1, the attack angle of the hydrofoil 1 can be continuously adjusted in real time according to the size of the pitching angle, and pitching is actively restrained.
4. The active controllable hydrofoil 1 is added at the bulbous bow 6, the design is convenient, the structure is simple, the effects of inhibiting pitching, rolling and heaving are obvious, the wave resistance and the rapidity are greatly improved, and the comfort is improved.
Drawings
Fig. 1a is a front view of the deep V-shaped ship of the present invention, fig. 1b is a top view of the deep V-shaped ship of the present invention, and fig. 1c is a left side view of the deep V-shaped ship of the present invention;
FIG. 2 is a cross-sectional view taken along line D-D of FIG. 1 a;
FIG. 3a is a cross-sectional view taken along line A-A of FIG. 3d, FIG. 3B is a cross-sectional view taken along line B-B of FIG. 3d, FIG. 3C is a cross-sectional view taken along line C-C of FIG. 3d, and FIG. 3d is a front view of the bulbous bow;
in the figure: 1, hydrofoil; a YX type O-shaped ring is used for the shaft 2; 3, a rudder stock; 4, gears; 5, a steering engine; 6, a bulbous bow; 7 a gyroscope; 8, a controller; 9 hull.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 a-3 d, the present invention is directed to an active controllable hydrofoil 1 designed to further improve the rapidity and wave resistance of a ship, wherein the hydrofoil 1 adopts an active control mode to realize the precise suppression of the swaying of the hydrofoil 1 to the ship.
The utility model discloses a dark V type ship has following parameter:
as shown in fig. 1a, 1b and 1c, the deep V-shaped ship has a large transverse inclination angle, so that the impact force of the ship in the waves is greatly reduced, the damping of the rolling of the ship is increased, and the conditions of the heaving and heading of the ship are improved, thereby obviously improving the navigability, the course stability and the maneuverability of the ship. On the basis of the advantages, the wave resistance and the rapidity of the deep V-shaped ship are further improved by installing the active controllable hydrofoil 1 at the bulbous bow 6 of the ship.
As shown in fig. 3a, 3b, 3c, and 3d, the bulbous bow 6 is in the form of a drop, which is beneficial to reducing the inflow angle of the design water line, and can greatly reduce wave-making resistance and suppress pitching. The discharge volume of the bulbous bow 6 is 2551.25m3The longitudinal section is streamline, the cross section is oval, the major axis length of the oval is 13m and the minor axis length is 11m at one fourth of the oval, the major axis length of the oval is 8.5m and the minor axis length of the oval is 6.6m at one half of the oval, the major axis length of the oval is 5.5m and the minor axis length of the oval is 3.8m at three fourth of the oval.
As shown in fig. 1a, 1b and 1c, an active controllable hydrofoil 1 is symmetrically arranged on the left side and the right side of a bulbous bow 6, the hydrofoil 1 adopts a streamline section NACA type, the maximum thickness of the NACA type section is positioned at a position 30% of the section chord length from the front edge, the thickness ratio is 12%, and the aspect ratio is 6.
Wherein b is the wing width, lambda is the aspect ratio, h is the wing length, ARIs wing area, CyThe coefficient of lift is 2.99 m/s. M measured by ship model testy＝71N·M,Fy0.57N. The lift coefficient C can be obtained according to the finite aspect ratio wing lift line theoretical formula (5)yThe area a of the hydrofoil 1 can be finally obtained from the above formula (0.158)R＝2m2。
As shown in fig. 2, 3a, 3b, 3c and 3d, the utility model discloses a bulbous bow with active controllable wing for deep V-shaped ship, bulbous bow 6 adopts the drop form, be favorable to reducing the inflow angle of design waterline, wave making resistance and suppression pitch can be reduced by a wide margin, the displacement volume of bulbous bow 6 is 2551.25m3, the vertical section is streamlined, the cross section is oval, in its fourth place, oval long shaft length is 13m, the stub shaft length is 11m, in its half, oval long shaft length is 8.5m, the stub shaft length is 6.6m, in its third place, oval long shaft length is 5.5m, the stub shaft length is 3.8m, the fixed mounting has 5 in bulbous bow 6, install gear 4 in the left and right sides, the outside of streamlined 4 is connected with rudder stock 3 transmission, rudder stock 3 stretches out fixed connection with the wing chord length 1, the vertical wing chord is connected with the fixed connection of the wing, the gyro is connected with the rudder stock 3 through the vertical swing angle of the propeller 3, the gyro is 0% of the horizontal plane, the gyro swing angle is used for the horizontal plane control, the gyro is controlled the horizontal plane, the gyro is controlled the horizontal plane through the horizontal plane thickness of the horizontal plane is 0% of the horizontal plane, the horizontal plane is controlled by the maximum swing angle of the horizontal plane, the horizontal plane is controlled by the vertical swing angle of the vertical swing propeller is controlled by the vertical propeller is 0-1, the vertical propeller is controlled by the vertical propeller, the horizontal plane, the.
As shown in fig. 2, in this embodiment, the controller 8 is an ARM-series single chip microcomputer, and is specifically configured such that, when the ship is in an accelerated sailing state, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, and adjusts an angle of attack a of the hydrofoil 1 to be within a range of 2 ° to 3 °, so that the hydrofoil 1 obtains an upward lift force due to a difference in an upper pressure and a lower pressure of the hydrofoil 1, a wet surface area of the bow is reduced, and thus ship resistance is reduced, the ship accelerates to a specified sailing speed in a short time, and rapidity is improved.
When the ship sails in waves, the gyroscope 7 monitors the size of a pitch angle, then information is fed back to the controller 8, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate, the attack angle alpha of the hydrofoil 1 is adjusted, the hydrofoil 1 is enabled to obtain large vertical motion damping and moment opposite to the pitch direction, the amplitude of the bow portion and vertical motion acceleration are reduced, and the generation of ship pitch, roll and heave is restrained.
When the ship is in a deceleration state, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, and adjusts the angle of attack a of the hydrofoil 1 to 0 ° as in an acceleration state, at this time, the hydrofoil 1 increases the wet surface area of the ship, the friction resistance is increased, and the braking capability is enhanced.
As shown in fig. 2, 3a, 3b, 3c and 3d, the bulbous bow 6 is streamlined in longitudinal section and elliptical in cross section, a steering engine 5 is fixedly arranged inside the bulbous bow 6, a rudder stock 3 extending out of the bulbous bow 6 is arranged on the left side and the right side of the steering engine 5 in a transmission connection mode, a hydrofoil 1 is fixedly connected to the end portion of the rudder stock 3 extending out of the bulbous bow 6, the hydrofoil 1 is a streamlined section, the attack angle between the hydrofoil 1 and the horizontal plane is α, and the control device 8 is responsible for controlling the action of the steering engine 5 so that the attack angle α between the hydrofoil 1 and the horizontal plane can be adjusted within the range of 0-3 degrees, and the ship can run under the optimal attack angle α.
The utility model relates to a control method of active controllable hydrofoil, it adopts the utility model discloses a bulbous bow that has active controllable wing for dark V type ship, including following step:
(1) when the ship accelerates to navigate, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, and adjusts the attack angle alpha of the hydrofoil 1 to be within the range of 2-3 degrees, so that the hydrofoil 1 obtains an upward large lift force, the wet surface area of the ship is reduced, the ship resistance is reduced, and the ship quickly reaches a designated navigation speed state;
(2) when the ship navigates under a complex sea condition, the gyroscope 7 monitors the size of a pitch angle and feeds back the pitch angle to the controller 8, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate to adjust the attack angle alpha of the hydrofoil 1 so as to obtain a longitudinal moment for inhibiting the pitch, the bow motion amplitude and the bow motion acceleration are reduced, and the hydrofoil 1 can reduce the heave and roll of the ship at the moment;
(3) when the ship decelerates, the controller 8 controls the steering engine 5 to rotate the rudder stock 3, adjusts the attack angle α of the hydrofoil 1 to 0 degree, increases the wet surface area of the ship, further increases the ship resistance, and reduces the ship speed.
The utility model discloses a gyroscope 7 monitors the size of boats and ships pitch angle, then controller 8 makes 3 rotatory adjustment hydrofoil 1's angle of attack alpha of rudderstock through control steering wheel 5, and increase vertical motion damping and acquisition and pitch opposite direction's moment reduce bow motion amplitude and bow acceleration, realize the accurate suppression to boats and ships pitch, roll and heave, improve its wave resistance performance. By adjusting the attack angle alpha of the hydrofoil 1, the lift force of the hydrofoil 1 is increased, so that the bow of the ship is lifted, the wet surface area of the ship is reduced, the friction resistance is reduced, the total resistance of the ship is reduced, the power consumption of a host is saved, and the effects of energy conservation and emission reduction are achieved. The size of the pitching angle is monitored through the gyroscope 7, the controller 8 controls the steering engine 5 to enable the rudder stock 3 to rotate to adjust the hydrofoil 1 to achieve certain flexibility, the attack angle of the hydrofoil 1 can be continuously adjusted in real time according to the size of the pitching angle, and pitching is actively restrained. The utility model discloses add active controllable hydrofoil 1 in 6 departments of bulbous bow, convenient in design, simple structure restrain pitch, roll and heave effect obvious, greatly improve its ripples resistance and rapidity, improve the travelling comfort.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A bulbous bow with active controllable wings for a deep V-shaped ship comprises a gyroscope (7) arranged at the center of gravity of a ship body (9) of the ship and a controller (8) fixedly arranged behind the gyroscope (7), and is characterized in that the longitudinal section of the bulbous bow (6) is streamline, and the cross section is oval;
a steering engine (5) is fixedly arranged in the bulbous bow (6), and the left side and the right side of the steering engine (5) are in transmission connection with a rudder stock (3) extending out of the bulbous bow (6);
the end part of the rudder stock (3) is fixedly connected with a hydrofoil (1);
the longitudinal section of the hydrofoil (1) is a streamline section, and the attack angle between the hydrofoil (1) and the horizontal plane is α;
the controller (8) is an ARM series single chip microcomputer and is responsible for controlling the action of the steering engine (5), so that the attack angle α between the hydrofoil (1) and the horizontal plane is adjusted within the range of 0-3 degrees, and the ship runs under the optimal attack angle α;
the gyroscope (7) is used for monitoring the longitudinal rocking angle of the ship and feeding monitoring information back to the controller (8).
2. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: gears (4) are installed on the left side and the right side of the steering engine (5), and the outer sides of the gears (4) are in transmission connection with the rudder stock (3).
3. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: and a YX-shaped O-shaped ring (2) for a shaft is further installed at the joint of the rudder stock (3) and the hydrofoil (1).
4. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: the streamline section of the hydrofoil (1) is of an NACA type, the maximum thickness of the NACA type section is located at a position 30% of the chord length of the section from the front edge, the thickness ratio is 12%, and the aspect ratio is 6.
5. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: the controller (8) is an ARM series single chip microcomputer, and is specifically constructed as follows,
when the ship is in an acceleration sailing state, the controller (8) controls the steering engine (5) to enable the rudder stock (3) to rotate, and the attack angle alpha of the hydrofoil (1) is adjusted to be within the range of 2-3 degrees;
when the ship sails in waves, the controller (8) controls the steering engine (5) to enable the rudder stock (3) to rotate, and adjusts the attack angle alpha of the hydrofoil (1) to enable the hydrofoil (1) to obtain large vertical motion damping and moment opposite to the pitching direction, so that the bow amplitude and vertical motion acceleration are reduced, and the generation of pitching, rolling and heaving of the ship is restrained;
when the ship is in a deceleration state, the controller (8) controls the steering engine (5) to enable the rudder stock (3) to rotate, and the attack angle alpha of the hydrofoil (1) is adjusted to 0 degree.
6. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: the drainage volume of the bulbous bow (6) is 2551.25m3。
7. The bulbous bow with actively controllable wings for a deep V-shaped vessel according to claim 1, wherein: the major axis of the ellipse of one quarter of the cross section of the bulbous bow (6) is 13m, and the minor axis is 11 m; at one half of the ellipse, the major axis of the ellipse is 8.5m, and the minor axis is 6.6 m; at three fourths of the ellipse, the major axis of the ellipse is 5.5m, and the minor axis is 3.8 m.
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| CN201920518585.4U CN210212659U (en) | 2019-04-17 | 2019-04-17 | Bulbous bow with active controllable wings for deep V-shaped ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941393A (en) * | 2019-04-17 | 2019-06-28 | 江苏科技大学 | The bulb bow and control method with the active controllable wing for Deep-vee hull form |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941393A (en) * | 2019-04-17 | 2019-06-28 | 江苏科技大学 | The bulb bow and control method with the active controllable wing for Deep-vee hull form |
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