CN2712797Y - Wing flap rudder body - Google Patents

Abstract

The utility model discloses a marine wing flap rudder body used for controlling the high control efficiency of the marine course. The rudder body is composed of a main rudder and a sub rudder. The back side of the main rudder is hinged to the front side of the sub rudder. The both sides of the main rudder are symmetric streamline faces, and the both sides of the sub rudder are symmetric folding line faces. The wing flap rudder body has higher control efficiency, and the running cost of the marine is reduced.

Description

Flap Rudder Body

(1) technical field

The utility model relates to a kind of rudder for ship.Specifically, be the ship wing flag rudder rudder body that is used for grasping the high maneuvering efficiency of ship course.

(2) background technology

At present, the rudder for ship that is used for grasping the course mostly is an integral structure, and its surface is a streamline surface.Because this rudder for ship is an integral structure, make that the boats and ships turn radius that this rudder is installed is bigger.Therefore, this rudder for ship is applicable at sea or does not often enter on the boats and ships of port operation that be difficult to be used on the boats and ships than the bay operation such as harbour or inland river, maneuvering efficiency is lower.In addition, the center of pressure of this rudder changes greatly with the change of rudder angle, and the change in torque of boat axle is also big.The change in torque one of boat axle is big, and required plane power is just big, and operating cost is higher.

(3) summary of the invention

The purpose of this utility model is to provide a kind of Flap Rudder Body.This Flap Rudder Body, not only maneuvering efficiency is higher, range of use is unrestricted, and can reduce the operating cost of boats and ships.

Above-mentioned purpose of the present utility model is realized by following technical scheme:

The characteristics of Flap Rudder Body of the present utility model are made up of main rudder and sub-rudder.Wherein, the front of the back of main rudder and sub-rudder is hinged.The two sides of main rudder is the streamline surface of symmetry, and sub-rudder two sides is the broken line profile of symmetry.

Adopt such scheme, have the following advantages:

Because Flap Rudder Body of the present utility model is by being made up of main rudder and sub-rudder.Wherein, be hinged between the front of the back of main rudder and sub-rudder.The two sides of main rudder is the streamline surface of symmetry, and sub-rudder two sides is the broken line profile of symmetry.During work, sub-rudder rotates with main rudder and produces relative rotation, and the camber of rudder blade bending is bigger, thereby produces bigger lift of rudder (moment living to ship), improves the cornering rate of boats and ships, and the turn radius of boats and ships is dwindled.Therefore, not being only applicable at sea or not needs often to enter on the boats and ships of port operation, can also be used on the boats and ships than the bay operation such as harbour or inland river.Can greatly improve the maneuvering performance of boats and ships in harbour, inland waterway navigation and operation.

As calculated and evidence, Flap Rudder Body of the present utility model is compared with traditional integral type rudder body, its cornering rate, preliminary examination cornering rate, course changing quality energy, the----course stability of answering rudder and drop down the boat steerage can improve 40%, 22%, 89%, 65% and 68% respectively.

According to another calculating, Flap Rudder Body of the present utility model, its lift coefficient is higher, is 1.3～1.8 times of conventional rudder.Its center of pressure of Flap Rudder Body of the present utility model is a definite value (being about 0.4) basically.Therefore, as long as the suitable rudderpost position of choosing just can make the moment of torsion of rudderpost diminish.The moment of torsion one of rudderpost is little, and required steering wheel power is just little.Power one is little, can reduce operating cost.

(4) description of drawings

Fig. 1 is a Flap Rudder Body structural representation of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of the Fig. 1 through having amplified, has omitted hinge-point and rudderpost between main rudder and the sub-rudder among the figure.

(5) specific embodiment

As shown in Figure 1, Flap Rudder Body of the present utility model is made up of main rudder 4 and sub-rudder 2, and the upper end of sub-rudder 2 is hinged with hull bottom under installing condition.Hinged between main rudder 4 back and sub-rudder 2 fronts by rudderpost 3, thus sub-rudder 2 can be produced relative rotation with the rotation of main rudder 4.Wherein: the two sides 5 of main rudder 4 is the streamline surface of symmetry, and its section offset is:

$y=\±\frac{t}{2}[158.969\sqrt{\frac{x}{b}}+41.352\frac{x}{b}+233.947{\left(\frac{x}{b}\right)}^2-1123.69{\left(\frac{x}{b}\right)}^3+679.818{\left(\frac{x}{b}\right)}^4]$

In the formula, t is that rudder cuts open maximum ga(u)ge, and b is that the side of a ship of rudder is long.

The section shape of sub-rudder 2 as shown in Figure 2, its two sides 1 be the symmetry the broken line profile, its rudderpost center x _zThe place is the wing section half-breadth and the main rudder y (x of itself and main rudder 4 junctions _z/ b) identical, from x _z2 times of y (x extend back _z/ b) quadrate.Sub-rudder 2 trailing edge thickness are cc ', link to each other with d ' with square angle point d respectively with c ' point from c, promptly constitute sub-rudder 2 sections.

Claims (1)

1. Flap Rudder Body is characterized in that being made up of main rudder and sub-rudder; Wherein, the front of the back of main rudder and sub-rudder is hinged; The two sides of main rudder is the streamline surface of symmetry, and sub-rudder two sides is the broken line profile of symmetry.

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