CN113071625A

CN113071625A - Anti-rolling device suitable for single-oar unmanned survey ship

Info

Publication number: CN113071625A
Application number: CN202110526560.0A
Authority: CN
Inventors: 苗飞; 郭翔宇; 刘杨; 梁家健; 郦羽; 王伟; 刁峰; 程红蓉; 邬婷
Original assignee: 702th Research Institute of CSIC
Current assignee: 702th Research Institute of CSIC
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-07-06
Anticipated expiration: 2041-05-14
Also published as: CN113071625B

Abstract

The invention relates to the technical field of unmanned ships, in particular to a stabilizing device suitable for a single-oar unmanned survey ship. The unmanned ship comprises an unmanned ship body, wherein a propeller and a rudder blade are sequentially arranged at the bottom of the stern of the unmanned ship body from the bow to the stern, the propeller and the rudder blade are positioned on a middle longitudinal section of the unmanned ship body, the left side and the right side of the propeller are respectively provided with a composite stabilizer, the two composite stabilizers are arranged in a bilateral symmetry mode along the middle longitudinal section, and the upper ends of the two composite stabilizers are fixed at the bottom of the unmanned ship body. According to the hydrodynamic force characteristics of the single-paddle unmanned survey ship, the two composite anti-rolling fins are arranged on the two sides of the stern propeller and in front of the rudder, and through the special design of the main fins and the auxiliary fins, the motion response of the unmanned survey ship in waves can be reduced, and the seaworthiness performance is improved; simultaneously, two compound fin stabilizers can also play the effect of protection screw to promote the operation efficiency of unmanned survey ship.

Description

Anti-rolling device suitable for single-oar unmanned survey ship

Technical Field

The invention relates to the technical field of unmanned ships, in particular to a stabilizing device suitable for a single-oar unmanned survey ship.

Background

With the development of autonomous control technology, unmanned systems on water surface, represented by unmanned ships, play an increasingly important role in the construction of environmental fields such as marine environmental survey. The unmanned survey vessel has low requirements on the navigational speed of the vessel, but needs to deal with the emergency of sea conditions, so the unmanned survey vessel has high requirements on the seaworthiness of the vessel and the stability in stormy waves.

At present, an unmanned ship for offshore measurement is generally transformed from a manned ship, the unmanned ship is small in size (the length is less than 10m), the wind and wave resistance is limited, the wind and wave resistance of the unmanned ship is weak when the unmanned ship sails in the wind and wave, and the measurement operation efficiency is reduced.

Disclosure of Invention

The applicant provides an anti-rolling device suitable for a single-oar unmanned survey vessel aiming at the defects in the prior art, and the anti-rolling capability of the survey vessel can be greatly enhanced by arranging two composite anti-rolling fins at the bottom of the stern, so that the survey operation efficiency is improved.

The technical scheme adopted by the invention is as follows:

the utility model provides an anti-rolling device suitable for unmanned survey ship of single-oar, includes unmanned hull, unmanned hull stern bottom sets gradually screw and rudder blade from the bow to stern direction, and screw and rudder blade are located the well vertical section of unmanned hull, the screw left and right sides sets up a compound fin of stabilizing respectively, and two compound fins of stabilizing set up along well vertical section bilateral symmetry, and two compound fin upper ends are fixed in unmanned hull bottom.

Furthermore, the tail end faces of the two composite stabilizer fins are flush with the tail end face of the propeller, the front end faces of the two composite stabilizer fins extend forwards to exceed the front end face of the propeller, the lower end faces of the two composite stabilizer fins do not exceed the lower end face of the rudder blade, and the tail end faces of the two composite stabilizer fins completely cover the propeller on two sides of the propeller.

Further, the ship width is set to be H, the distance between the root of the composite stabilizer fin and the middle longitudinal section is 0.2-0.25H, an included angle A is formed between the extension direction of the composite stabilizer fin and the middle longitudinal section, and the included angle A is 15-20 degrees.

Furthermore, the composite stabilizer fin comprises a main fin and an auxiliary fin which are sequentially arranged from top to bottom, the upper end face of the main fin is fixedly connected with the bottom of the unmanned ship body, the lower end face of the main fin is fixedly connected with the auxiliary fin, and the cross section sizes of the main fin and the auxiliary fin are reduced from the root to the end.

Furthermore, the chord length of the section of the root part of the main fin is 0.3-0.32H, the chord length of the section of the end part of the main fin is half of the chord length of the section of the root part, the spanwise ratio of the main fin is 0.2 by the chord length of the section of the root part, and the front edge of the main fin is swept backwards.

Further, the main fin section is an NACA0010 airfoil.

Furthermore, the chord length of the section at the root part of the auxiliary fin is equal to that of the section at the end part of the main fin, the chord length of the section at the end part of the auxiliary fin is 2/3, the extension length of the auxiliary fin is 1/3 that of the main fin, the rear edge of the auxiliary fin is swept forward, and the front edge of the auxiliary fin is swept backward.

Further, the cross section of the secondary fin is of a NACA0005 airfoil.

The invention has the following beneficial effects:

the invention has compact and reasonable structure and convenient operation, two composite anti-rolling fins are arranged on two sides of a stern propeller and in front of a rudder by aiming at the hydrodynamic force characteristic of the single-paddle unmanned survey vessel, and the motion response of the unmanned survey vessel in waves can be reduced and the seaworthiness performance can be improved by the special design of the main fins and the auxiliary fins; simultaneously, two compound fin stabilizers can also play the effect of protection screw to promote the operation efficiency of unmanned survey ship.

Drawings

FIG. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a structural view of the composite fin stabilizer.

FIG. 4 is a cross-sectional view of the main fin

FIG. 5 is a cross-sectional view of the sub-fin

Wherein: 100. an unmanned hull; 110. compounding stabilizer fins; 111. a main fin; 112. a sub fin; 120. a rudder blade; 130. a propeller; 140. middle longitudinal section.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

In the embodiment shown in fig. 1 and 2, mainly comprising the unmanned hull 100, the propeller 130 and the rudder blade 120 are arranged in the direction from the bow to the stern at the bottom of the stern of the unmanned hull 100, and the propeller 130 and the rudder blade 120 are located on the longitudinal middle section 140 of the unmanned hull 100.

In the embodiment shown in fig. 1 and 2, one composite stabilizer fin 110 is respectively disposed on the left and right sides of the propeller 130, the two composite stabilizer fins 110 are symmetrically disposed on the left and right sides along the longitudinal median plane 140, and the upper ends of the two composite stabilizer fins 110 are fixed to the bottom of the unmanned hull 100. The aft faces of the two composite fins 110 are flush with the aft face of the propeller 130 and the forward faces of the two composite fins 110 extend forward beyond the forward face of the propeller 130. The lower end surfaces of the two composite stabilizer fins 110 do not exceed the lower end surface of the rudder blade 120. The two composite stabilizer fins 110 completely cover the propellers 130 at the two sides of the propellers 130 at the tail end faces, and protect the propellers 130 to prevent sundries at the two sides of the hull from being caught in the propellers 130.

In the embodiment shown in fig. 1 and 2, the ship width is set to be H, the distance between the root of the composite fin 110 and the middle longitudinal section 140 is 0.2-0.25H, and an included angle a is formed between the extension direction of the composite fin 110 and the middle longitudinal section 140 and is 15-20 degrees.

In the embodiment shown in fig. 2 and 3, the composite stabilizer fin 110 includes a main fin 111 and a sub-fin 112 sequentially arranged from top to bottom, the upper end surface of the main fin 111 is fixedly connected to the bottom of the unmanned hull 100, and the lower end surface of the main fin 111 is fixedly connected to the sub-fin 112. The cross-sectional dimensions of the main fin 111 and the sub-fin 112 decrease from the root to the tip.

In the embodiment shown in fig. 2 and 3, the chord length of the cross section of the root of the main fin 111 is 0.3-0.32H, the chord length of the cross section of the end of the main fin 111 is half of the chord length of the cross section of the root, and the spanwise ratio of the main fin 111 is 0.2 based on the chord length of the cross section of the root. The leading edge of the main fin 111 is swept back.

In the embodiment shown in fig. 4, the main fins 111 are NACA0010 airfoil in cross-section.

In the embodiment shown in fig. 3 and 5, the chord length of the cross section at the base of the sub-fin 112 is equal to the chord length of the cross section at the end of the main fin 111, the chord length of the cross section at the end of the sub-fin 112 is 2/3 chord length of the cross section at the base of the sub-fin 112, the span length of the sub-fin 112 is 1/3 span length of the main fin 111, the rear edge of the sub-fin 112 is swept forward, and the front edge of the sub-fin 112.

In the embodiment shown in fig. 5, the secondary fins 112 are NACA0005 airfoil in cross-section.

To sum up, the invention provides a stabilizer suitable for a single-oar unmanned survey ship, which comprises two composite stabilizer fins 110, wherein the two composite stabilizer fins 110 are arranged at the positions, close to two side boards, of the bottom of a stern, and the stabilizer is mainly designed for the medium-low speed single-oar unmanned survey ship. The composite fin stabilizer can realize lower resistance increase and better stabilizing effect through the effective combination of the main fins 111 and the auxiliary fins 112, and can also play a certain role in protecting a propeller. Evaluation results show that the device can effectively improve the seaworthiness of the unmanned ship in waves.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. A roll reducing device suitable for a single-oar unmanned survey ship comprises an unmanned ship body (100), wherein a propeller (130) and a rudder blade (120) are sequentially arranged at the bottom of the stern of the unmanned ship body (100) from the bow to the stern, the propeller (130) and the rudder blade (120) are positioned on a longitudinal median plane (140) of the unmanned ship body (100), and the roll reducing device is characterized in that: the left side and the right side of the propeller (130) are respectively provided with one composite stabilizer fin (110), the two composite stabilizer fins (110) are arranged in a bilateral symmetry mode along a middle longitudinal section (140), and the upper ends of the two composite stabilizer fins (110) are fixed to the bottom of the unmanned ship body (100).

2. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 1, wherein: the tail end faces of the two composite stabilizer fins (110) are flush with the tail end face of the propeller (130), the front end faces of the two composite stabilizer fins (110) extend forwards to exceed the front end face of the propeller (130), the lower end faces of the two composite stabilizer fins (110) do not exceed the lower end face of the rudder blade (120), and the tail end faces of the two composite stabilizer fins (110) completely cover the propeller (130) on two sides of the propeller (130).

3. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 1, wherein: setting the ship width to be H, setting the distance between the root of the composite stabilizer fin (110) and the middle longitudinal section (140) to be 0.2-0.25H, and setting an included angle A between the extension direction of the composite stabilizer fin (110) and the middle longitudinal section (140) to be 15-20 degrees.

4. A roll reducing device suitable for a single-oar unmanned survey vessel, according to any one of claims 1 to 3, wherein: the composite fin stabilizer (110) comprises a main fin (111) and an auxiliary fin (112) which are sequentially arranged from top to bottom, the upper end face of the main fin (111) is fixedly connected with the bottom of the unmanned ship body (100), the lower end face of the main fin (111) is fixedly connected with the auxiliary fin (112), and the cross section sizes of the main fin (111) and the auxiliary fin (112) are reduced from the root to the end.

5. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 4, wherein: the section chord length of the root part of the main fin (111) is 0.3-0.32H, the section chord length of the end part of the main fin (111) is half of the section chord length of the root part, the spanwise ratio of the main fin (111) is 0.2 by the section chord length of the root part, and the front edge of the main fin (111) sweepbacks backwards.

6. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 5, wherein: the section of the main fin (111) is an NACA0010 airfoil.

7. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 4, wherein: the chord length of the section of the root part of the auxiliary fin (112) is equal to that of the section of the end part of the main fin (111), the chord length of the section of the end part of the auxiliary fin (112) is 2/3 chord length of the section of the root part of the auxiliary fin (112), the spread length of the auxiliary fin (112) is 1/3 that of the main fin (111), the rear edge of the auxiliary fin (112) is swept forward, and the front edge of the auxiliary fin (112) is swept backward.

8. A roll reducing device suitable for a single-oar unmanned survey vessel, according to claim 7, wherein: the secondary fin (112) is NACA0005 airfoil in cross section.