KR20030050327A - Lift Enhanced Rudder for Ships Maneuver - Google Patents

Abstract

PURPOSE: A steering device for a ship is provided to generate Coanda phenomenon and to increase the efficiency of propeller. CONSTITUTION: An inlet(100) sucks the part of a flow to be discharged from a propeller(5) by installing in the front upper part of a main blade. An inlet pipe(101) carries the sucked fluid to a pump(102) by connecting through the inlet. A pressure controller controls the pressure of the fluid to be flowed in via an accumulating tank. A pressure water supply pipe(110) is installed inside the main blade by connecting through the pressure controller and supplies the fluid to a distributor. A pressure chamber supplies the fluid to a discharging direction controller of an auxiliary blade by installing in the back of the distributor. Thereby, a flaking is prevented.

Description

Lift Enhanced Rudder for Ships Maneuver

The present invention relates to another apparatus for ships to obtain a high lift, and more particularly, to another wing apparatus in which the main wing and the auxiliary wing is driven in conjunction, the main wing and the main wing after increasing the pressure by sucking the fluid from the upper front By spraying into the gap between the auxiliary wings to prevent the occurrence of vortex around other devices, the high-speed jet flow flowing along the surface of the auxiliary wing is formed to enhance the circulating flow around the wing device to obtain a higher lift The present invention relates to another apparatus for ships for generating high lift force.

In general, propellers, which are propellers of ships, are installed at the rear of the hull, where the flow velocity is slow, and when the engine is rotated by receiving power from the engine, the propeller inhales the front flow and accelerates and discharges the flow to the rear of the hull. Due to the flow released to the rear will inevitably appear to rotate components. Therefore, since the ship's rudder is located in the wake of the propeller, it serves to divide and rectify the rotational flow at the rear into a vertical plane, and at the same time, to recover the lost power due to the rotational component generated by the propeller. As such, the flow between the hull and the propeller or propeller and the rudder and between the hull and the propeller-rudder have a close influence on each other.

Therefore, it is devised and put into practice to put an additional device such as a duct or a fixed pin on the front or the rear of the propeller as a method for inducing the mutual interference phenomenon of the flow to favor the propulsion performance to enhance the power saving effect. However, they are only used for special purpose ships because of their structural complexity and demanding manufacturing processes.

On the other hand, when the fluid flowing into the surface of the object is injected at high speed, the fluid has a high velocity jet flow, and since the pressure is lower than the surrounding fluid, the fluid is pressurized in the normal direction from the surrounding fluid. It will flow along the surface without falling off. At this time, when the fluid runs along the surface of the rounded part of the object, it is subjected to centrifugal force.As long as the equilibrium between the pressure received from the surrounding fluid and the centrifugal force generated by the fluid running along the object, the streamline does not fall off the surface of the object The fluid flow was discovered by Henry Coanda of Romania around 1910 and called the Coanda phenomenon. Therefore, when the Kanda phenomenon occurs, the circulation flow is strengthened and the vortex flow delayed by the peeling phenomenon at the back of the wing is delayed, thereby increasing the range in which a high lift can be obtained without causing the stall phenomenon. As it turns out, it is used as a means of gaining high lift without causing a lack of lift at low speed, which is inevitable when the aircraft takes off and lands.

Investigating the flow distribution at the position where the propeller will be placed without the propeller running will cause the fluid to run through the hull in the upper part and be slowed down, concentrating the slower flow above the propeller face. In addition to reducing the efficiency of the propeller, examining the distribution of the backflow from the rear of the propeller, relatively slow flow remains in the upper part of the propeller, resulting in power loss due to uneven flow distribution behind the propeller.

In the upper half of the high lift rudder system, the forward fluid is sucked in, so that the flow is accelerated by sucking the flow in the upper part of the propeller with a relatively low flow rate. This effect accelerates the late velocity of the upper half of the propeller plane, and acts in a direction in which the flow distribution is leveled on the propeller plane. The suctioned fluid is discharged through the gap between the main wing and the auxiliary wing after raising the pressure, which causes the Coanda phenomenon. No technique has been proposed yet.

In other device, which is the representative device that controls and controls the ship by using lift force, the wing section is divided into main wing and auxiliary wing, and the auxiliary wing is rotated to have a constant angle with respect to the main wing. The same effect can be achieved by changing the power to a high lift. Becker-type rudders, which mechanically link the main wings and auxiliary wings to achieve high lift, have long been used in ships that require large inertia. This device is composed of a kinematic structure that the auxiliary wing is connected to the main wing and the link device when the main wing rotates at a certain angle, so that the rotation angle of the auxiliary wing obtained by amplifying the rotation angle of the main wing at a constant ratio is obtained. . Recently, in Japan, a Becker type interlock was installed on both the top and bottom of the rudder to develop a different device that improved the mechanism to improve the reliability of the performance. The main wing of the front was rotated left and right about the other axis. The auxiliary wing at the rear thereof is supported by a hinge which is divided into upper and lower sides so as to be interlocked and rotated. This is disclosed in Japanese Patent Application Laid-open No. Hei 10-338198 (1998.12.22), but the device is constructed in comparison with other devices. This complex and high probability of failure has problems in rising prices and maintenance.

Hereinafter, problems and the like with respect to the related art will be described with reference to the drawings.

1 is a perspective view of a stern part of another apparatus for saving energy in the related art, which is the form most adopted in the related art for the purpose of energy saving, and the stern part 3, the propeller 5, and the main part of the hull equipped with additional parts A stern perspective view illustrating the arrangement of a propulsion device composed of a rudder coupled to a wing 1 and an auxiliary wing 2. In the above technique, the rectifier fin 4 for rectifying the stern flow is attached to the hull in consideration of the interaction between the hull-propulsion machine and the rudder, and the rectifier fin 6 for rectifying the flow around the rudder also in the other main blade 1. They are attached, so they may show some effect in terms of propulsion efficiency, but there is a problem that is not very effective in improving the steering performance by increasing the lift of the other.

And, Figure 2 is a conceptual cross-sectional view of the other device consisting of the main, auxiliary wings, showing the arrangement of the Becker-type other device divided into the main wing and the auxiliary wing, these are mechanically interlocked and used as other devices for ships Is a conceptual diagram showing the arrangement of the wing section. The technology is the main blade (1) and the auxiliary wing (2) in the wing device consisting of the main blade is rotated angle of attack (alpha: ), The angle of reception of the main blade is amplified by a certain ratio on the auxiliary wing. It is connected to the link device to interlock so that the main blade rotates to show that the cross-sectional arrangement of the other device is changed. When changing the angle of the main blade with respect to the hull to the desired angle, the auxiliary wing must also be amplified and rotated at an effective angle accordingly. As mentioned above, not only the structure is complicated but also the mechanical linkage linkage must be manufactured precisely. This led to an increase in the price of the ship and the difficulty of maintenance.

3 is a conceptual cross-sectional view of a vortex generated around another conventional device, and is a view for explaining a cause of stalling caused by a wing device composed of a main wing and an auxiliary wing. The above technique is to lift the lift due to the separation of the mammary gland from the upper surface of the auxiliary wing when the auxiliary angle of rotation of the auxiliary wing divided into the main wing (1) and the auxiliary wing (2) is greater than a certain value. There is a problem that a stall phenomenon that does not occur

Accordingly, the present invention is to solve the conventional problems as described above

As proposed, it is intended to configure a high-performance rudder device capable of generating a high lift for ships, in more detail the present invention, the main blade, auxiliary wing, rudder blade for main blade rotation and the auxiliary shaft rotation axis In another apparatus for ships configured to be interlocked by a Becker type interlocking device, the inlet port is provided on the front end of the main blade to suck a part of the flow discharged from the propeller, and the fluid sucked in communication with the suction port A suction pipe passage for transferring the pump installed in the hull, a pressure regulator for controlling the pressure of the fluid flowing out through a pressure storage tank in the hull storing the fluid boosted by the pump, and an internal pressure of the main blade in communication with the pressure regulator. A pressure water supply pipe for supplying a fluid to a distributor installed along an edge of the pressure chamber in the It is installed at the rear of the auxiliary wing is provided with a pressure chamber for supplying fluid to the direction controller for controlling the direction of the ejection fluid is coupled to provide a vessel other device for obtaining a high lift characterized in that generates a Coanda phenomenon. There is a purpose.

In addition, in order to achieve a high lift force in the other device to achieve the above object, by sucking the fluid from the front of the main blade to the pump to increase the pressure and eject it into the gap between the main wing and the auxiliary wing to the surface of the auxiliary wing By causing the jet flow to follow, the Coanda effect is generated to gain additional lift. At this time, the fluid inlet is installed in the upper half of the main blade to suck the fluid from the upper half of the propeller plane, which has a relatively slow velocity distribution, and is directly in front of the other device due to the acceleration effect of the induced flow when the fluid is sucked in. There is also a secondary purpose to increase the efficiency of the propeller by ensuring that the return distribution at the propeller position is leveled.

1 is a perspective view of a stern part of another device for saving energy in the related art

Figure 2 is a conceptual cross-sectional view of another device composed of a conventional primary, secondary wings

3 is a conceptual cross-sectional view of a vortex generated around another conventional device

4 is a conceptual cross-sectional view showing a Coanda phenomenon of the present application.

Figure 5 is a perspective view of the stern portion installed the other device for ship of the present application

6 is a cross-sectional view taken along line AA ′ of FIG. 5.

Figure 7 is a pipe system diagram of the Coanda jet flow generator of the present application

* Explanation of symbols for main parts of the drawings

1: main wing 2: auxiliary wing

3: stern part 4: (stern flow) commutation pin

5: Propeller 6: (for flow around other) commutation pin

7: botex 8: jet flow

9: boundary layer wired 10: rudder stock

20: slider block 21: auxiliary blade rotation axis

30: Hinge pin 31: Hinge block

32: slider arm 100: inlet

101: suction pipe 102: pump

103: accumulator tank 104: pressure regulator

110: pressure water supply line 111: distributor

112: pressure chamber 113: ejection direction regulator

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a conceptual cross-sectional view showing the Coanda phenomenon of the present application, Figure 5 is a perspective view of the stern portion provided with the other device for ships of the present application, Figure 6 is an internal cross-sectional view of the other for the jet generating device of the present application, Figure 7 Pipe system diagram of the Coanda jet generator of the present application

Fig. 4 conceptually shows the change of flow around other devices when producing the Coanda phenomenon, which is the basic theory of the present invention, in which jet flow from the gap between the main wing 1 and the auxiliary wing 2 is When the fluid is injected, the jet flow 8 flowing along the upper surface of the auxiliary blade is formed, and the Kanda phenomenon occurs. It is a basic conceptual diagram illustrating that the flow can be delayed and the stall phenomenon can be delayed.

Figure 5 is a perspective view of the stern portion provided with the other device for ships to obtain the high lift force of the present application, the front propeller (5) in front of the front end of the other main blade (1) installed in the vertical direction and installed in the rear of the propeller (5) A suction port 100 for suctioning the flow discharged by the air is provided, and a rudder material for rotating the rudder by a suction pipe passage 101 for transferring the sucked fluid into the hull and a steering mechanism inside the hull. (rudder stock) 10, and a pressure water supply pipe 110 for sending the fluid to increase the pressure in the hull into the main wing (1).

And, the upper end of the auxiliary blade (2) protrudes the rotary shaft 21 for rotating the auxiliary blade is fixed integrally so that the relative movement with the slider block 20, and penetrates the slider block 20 forward and backward Slider arm 32 is connected to the hinge block 31 in front of the hinge block 31, the hinge pin 30 is fitted in the inside can be freely rotated around the hinge pin (30). Therefore, when the steering wheel installed inside the hull rotates the rudder stock 10, and the rotation of the main blade occurs, the rudder stock and the stern fixing hinge pin 30 is fixed to the hull to maintain the relative position with the hull? When the rudder blade 10 is rotated, if the rear end of the main blade 1 deviates from the hull center line, the rotating shaft 21 and the slider block 20 of the auxiliary blade are connected to the rear end of the main blade and are separated from the hull center line. Will go out. And fixed to the stern A hinge block 31 coupled to the slider arm 32 is fitted to the hinge pin 30, and the slider arm 32 is connected through the slider block 20 so that the main blade rotates so that the slider block 20 is rotated. ) Slides along the slider arm 32 and away from the hull centerline, while at the same time the slider arm 32 faces the slider block 20 such that the angular rotation occurs in the auxiliary wing. Therefore, the correlation between each rotation of the main blade and each rotation of the auxiliary blade is determined according to the position of the stern fixing hinge pin 30, the designer determines the position.

6 is a cross-sectional view showing the inside of the other as AA 'cross-sectional view of FIG. 5, as shown in the description of FIG. 5, there is an inlet 100 for sucking fluid from the front in the main wing, and the inlet is partially The suction pipe passage 101 is inserted into the opening or through a plurality of holes to suck water from the suction port, so that the water can be sucked by a pump installed in the hull.

A rudder material 10 is installed at the rear thereof, and then, a distributor 11 for distributing the pressure water is provided at the rear with a pressure water supply pipe 110 therein, and at the rear of the auxiliary blade. The pressure chamber 112 is naturally formed at the position in communication so that the pressure water is jetted to the front of the auxiliary wing.

The jet ejection direction is naturally determined by the pressure difference between the pressure plane and the lift plane of the wing, so it is not necessary separately. However, even when operating at low speeds, the jet direction of the jet may be reliably obtained when the lift effect is more reliably obtained, or when the jet ejection direction is forcibly changed to control the ship. In order to quickly and quickly install the ejection direction regulator 113 and to be driven by a mechanical link device or a hydraulic device to act as a valve.

Therefore, the pressure is increased in the pressure storage tank inside the hull and the pressure water adjusted to the appropriate pressure by the pressure regulator is supplied to the pressure chamber 112 inside the main wing through the supply pipe 110. Between the pressure water supply line 110 and the pressure chamber upper wall, a distributor 111 for distributing the flow rate is inserted so that the jet flow ejected from the auxiliary wing is uniform throughout the longitudinal direction of the auxiliary wing. The distributor 111 has a cylindrical structure in which a plurality of holes are drilled, and adjusts the size and arrangement of the holes so that the flow rate of ejection is equalized in the longitudinal direction of the auxiliary wing.

FIG. 7 relates to a pipe system diagram of a Coanda jet generator of the present application, wherein the propeller is driven by an acceleration effect of fluid that is induced when the back of the propeller 5 is sucked into the inlet 100 from the front of another device. (5) to contribute to the leveling of the reflux distribution in the plane, and the suctioned fluid is increased in the pump 102 installed in the hull via the suction pipe 101 and stored in the accumulator tank 103, the pressure regulator The pressure water supplied to the main wing along the pressure water supply line 110 is adjusted to a proper pressure at 104 and is ejected into the gap between the main wing 1 and the auxiliary wing 2 along the surface of the auxiliary wing. When the flowing jet flow 8 is formed, a Coanda phenomenon occurs as shown in FIG. 4, thereby increasing lift.

In addition, as another embodiment of the present invention, the rudder material 10 of the main wing (1) is fixed to the hull, to secure a space connected to the inside of the hull from the main wing (1) and the suction port 100, suction pipe The furnace 101, the supply pipe 110, the pump 102, the accumulator tank 103, etc. are fixed to the inside of the space and arranged as described above, so that only the auxiliary wing is driven, necessary when interlocking the main wing and the auxiliary wing. When a high lift force is required, the jet flow generator is operated by generating a jet flow flowing along the surface of the auxiliary wing by manipulating the vessel in the state of omitting complicated mechanical devices. A high lift can be achieved by the Coanda effect.

NACA0021 wing section with a maximum wing thickness of 21% of the tip from the wing tip to the trailing edge of the NACA standard to confirm the lift effect due to the Coanda effect obtained by jet injection as described above. The blade was divided into three quarters of the distance from the tip of the wing to the rear of the wing to produce a wing device consisting of the main and auxiliary wings. Angle of attack of the main blade on the wing ) And the angle of rotation of the auxiliary blade ( 2) Experimentally investigate the effect of jet ejection when the () is changed (see Fig. 2), and compare the result with the result obtained from the reference wing section consisting of NACA0021 section, which is the reference. The lifting force measured at is shown in Table 1. The experimental results shown in Table 1 summarize the representative experimental results that can prove the increase of lift due to the Coanda phenomenon. First, the standard angle is received by other devices that are not divided into main and secondary wings. ) Was based on the 10 ° C. The angle of attack of the main blade is also used for other devices in which the other device is divided into the main wing and the auxiliary wing. ), The change of fluid force generated by other devices according to each rotation of the auxiliary wing and jet ejection with respect to the main wing when the temperature was fixed at 10 ℃ was compared with the reference state.

[Table 1] Lift test results

number Division (main wing / auxiliary wing) alpha beta Jet blowout Lift One 100% / 0% 10 0 0 ℓ / sec 0.67 2 75% / 25% 10 40 0 ℓ / sec 1.59 3 2 ℓ / sec 3.70

Number 1 of Table 1 is the angle received by the conventional other device (alpha: ) Is set at 10 ° C., there is no jet ejection, and the ejection amount is 0, indicating that the lift force obtained at this time is only 0.67.

And, when the other device is divided into the main wing and the auxiliary wing at 75% of the distance from the tip to the rear end of the wing, the angle of attack of the main wing (alpha: ) Is the angle of the auxiliary wing (in order to obtain an increase in lift using the Coanda effect under the same conditions as the number 1). ), 40 degrees, the effect is shown as numbers 2 and 3.

If the jet is not jetted while increasing the auxiliary wing angle to 40 ℃ as shown in No. 2 (jet jet amount: 0), the lift will be 1.59, which is about 2 times higher than in the standard condition, Lifting force equivalent to lift can be obtained, but as shown in the number 3, jet ejection amount of 2 ℓ / sec can be easily confirmed that lift is increased by about 5.5 times than the standard state. This may be due to the Coanda effect caused by the jet flow along the upper surface of the auxiliary wing. Jet flow acted as thrust in any case, and it was confirmed that a large part of the power required for jet generation was utilized for ship propulsion to recover some power.

Separately, jets that pass through the gap between the main and secondary wings do not eject in the section corresponding to the upper quarter of the other device and the section corresponding to the lower quarter of the other part without using the entire length of the other device. It was confirmed that 70% of the lift increase effect obtained when jets were ejected through the entire wing was prevented by blocking the passage.

As described in detail above, the present invention sprays the water jet into the gap between the main wing and the auxiliary wing, so that the jet of water flows along the surface of the auxiliary wing to delay the peeling phenomenon and thus prevent the ship from stalling. By providing the technology of other high lift generating device which can be used to control the control, it can be used as other device which is critical for improving the steering performance of low speed hypertrophy ship which is difficult to control with the conventional technology or the ship which requires the agile steering performance. It has the effect of internationally acknowledging the excellence of ship steering performance.

Claims (12)

In the ship other device configured to drive the main wing (1), the auxiliary wing (2), the main blade rotation rudder material 10 and the auxiliary wing rotation rotary shaft 21 by the Becker type linkage device, An inlet 100 provided at an upper end of the main blade to suck a part of the flow discharged from the propeller 5, and a suction pipe path for transferring the fluid sucked in communication with the suction port to a pump 102 installed in the hull ( 101), a pressure regulator 104 for adjusting the pressure of the fluid flowing through the accumulator tank 103 in the hull storing the fluid boosted by the pump, and in communication with the pressure regulator inside the main blade The pressure water supply pipe 110 is installed and supplies fluid to the distributor 111 provided at the edge, and the pressure chamber 112 is installed at the rear of the distributor to supply the fluid to the ejection direction controller 113 of the auxiliary blade. Combination of Kanda (Coa) nda) Other devices for ships to obtain high lift, characterized in that the phenomenon occurs The method of claim 1, The suction pipe passage 101 is another device for a vessel to obtain a high lift, characterized in that the part of the front portion is configured to open. The method of claim 1, The suction pipe passage 101 is another device for a vessel to obtain a high lift, characterized in that the front surface is composed of a plurality of through holes The method of claim 1, The distributor 111 has a cylindrical structure with a plurality of holes, and other vessels for obtaining a high lift, characterized in that for adjusting the dimensions of the hole so that the flow rate is equalized in the longitudinal direction of the auxiliary wing. The method of claim 1, The jet direction regulator 113 is another device for a vessel to obtain a high lift, characterized in that driven by a mechanical link device The method of claim 1, The jet direction controller 113 is another device for a vessel to obtain a high lift, characterized in that driven by a hydraulic device In the ship other apparatus provided with the main wing (1), auxiliary wing (2), rudder material 10 and the auxiliary shaft rotation axis 21, the main wing (1) is fixed and the auxiliary wing (2) is It is configured to be driven, the suction pipe 100 in the upper part of the main blade front end for sucking a part of the flow discharged from the propeller (5), and the suction pipe for transferring the fluid sucked in communication with the suction port to the pump 102 installed in the hull A pressure regulator 104 for regulating the pressure of the fluid flowing through the furnace 101, a pressure tank 103 in the hull storing the fluid boosted by the pump, and a pressure regulator 104 in communication with the pressure regulator. The pressure water supply pipe 110 is installed inside and supplies fluid to the distributor 111 provided at the edge, and the pressure chamber is installed at the rear of the distributor to supply fluid to the ejection direction controller 113 of the auxiliary blade. (112) equipped to develop the Coanda phenomenon For ships and for other devices, comprising a step of obtaining a lift The method of claim 7, wherein The suction pipe passage 101 is another device for a vessel to obtain a high lift, characterized in that the part of the front portion is configured to open. The method of claim 7, wherein The suction pipe passage 101 is another device for a vessel to obtain a high lift, characterized in that the front surface is composed of a plurality of through holes The method of claim 7, wherein The distributor 111 has a cylindrical structure with a plurality of holes, and other vessels for obtaining a high lift, characterized in that for adjusting the dimensions of the hole so that the flow rate is equalized in the longitudinal direction of the auxiliary wing. The method of claim 7, wherein The jet direction regulator 113 is another device for a vessel to obtain a high lift, characterized in that driven by a mechanical link device The method of claim 7, wherein The jet direction controller 113 is another device for a vessel to obtain a high lift, characterized in that driven by a hydraulic device