CN-121425443-B - Drag reduction wing type lifting ring and wide-speed-domain AUV

CN121425443BCN 121425443 BCN121425443 BCN 121425443BCN-121425443-B

Abstract

The application provides a drag reduction wing type lifting ring and a wide-speed-range AUV, wherein the drag reduction wing type lifting ring comprises a lifting ring body, wherein wing profiles of the lifting ring body are NACA symmetrical wing profiles, the lifting ring body comprises a first wing type lifting ring and a second wing type lifting ring which are axisymmetric, two sides, far away from each other, of the first wing type lifting ring and the second wing type lifting ring are convex arc-shaped curved surfaces, the protruding directions of the two arc-shaped curved surfaces are opposite, and lifting holes for lifting the AUV of an autonomous underwater vehicle are formed in protruding positions of the first wing type lifting ring and the second wing type lifting ring. The drag reduction wing type lifting ring design can realize the effects of drag reduction and energy consumption reduction, and improves the range of an AUV.

Inventors

Bao Chaopeng
HAO CHENGPENG
WANG XIN
LIN XIAOBO

Assignees

中国科学院声学研究所

Dates

Publication Date: 20260508
Application Date: 20251103

Claims (9)

1. A drag reducing airfoil shaped lifting ring, comprising: the lifting ring body is provided with an NACA symmetrical wing profile, and comprises two axisymmetric first wing profile lifting rings and second wing profile lifting rings; The first wing-shaped lifting ring or the second wing-shaped lifting ring comprises a front edge side, a middle section side, a rear section side and a tail end side, wherein the projection thickness of the first wing-shaped lifting ring or the second wing-shaped lifting ring along the second direction is gradually increased from the front edge side to the middle section side along the first direction, the projection thickness of the first wing-shaped lifting ring or the second wing-shaped lifting ring along the second direction is gradually reduced from the rear section side to the tail end side along the first direction, the length of the middle section side is smaller than the length of the rear section side, and the first direction is the advancing direction of the AUV.
2. The drag reducing airfoil ring of claim 1, wherein the first airfoil ring and the second airfoil ring are removably mounted to the autonomous underwater vehicle AUV after being mutually clasped.
3. The drag reducing airfoil ring of claim 1, wherein the first airfoil ring and the second airfoil ring are in clasping connection with each other by a fastening bolt.
4. The drag reducing airfoil ring of claim 3, wherein the first airfoil ring is provided with a countersunk through hole and the second airfoil ring is provided with a threaded hole.
5. The drag reducing airfoil lifting ring of claim 1, wherein the leading and trailing edge sides are smoothly chamfered at their ends facing away from each other and the trailing edge side has a smaller angle of attack than the leading edge side.
6. The drag reducing airfoil ring of claim 1, wherein the leading edge side and trailing edge side are rounded off from the sides of the AUV.
7. The drag reducing airfoil shaped lifting ring of claim 1, wherein the lifting hole is located at the junction of the mid-section side and the rear-section side.
8. The drag reducing airfoil ring of claim 7, wherein the junction of the leading edge side and the trailing edge side is a smooth junction and the leading edge side, the midsection side, the trailing section side and the trailing edge side are integrally formed.
9. A wide-speed-domain AUV comprising the drag reducing airfoil suspension ring of any of claims 1-8.

Description

Drag reduction wing type lifting ring and wide-speed-domain AUV Technical Field The application relates to the field of underwater vehicle hoisting, in particular to a drag reduction wing type hoisting ring and a wide-speed-range AUV. Background An autonomous underwater vehicle (Autonomous Underwater Vehicle, AUV) is an unmanned equipment capable of autonomous or remotely piloting under water. The equipment has the characteristics of strong concealment, large maneuvering range and the like, and is widely applied to the civil and military fields. For example, the system can be used for tasks such as submarine exploration, marine science research, underwater rescue and the like, and combat roles such as reconnaissance, anti-mine, information collection and the like. In order to remarkably expand the operation range and efficiency of an Autonomous Underwater Vehicle (AUV), and meet the continuous operation requirements of the AUV in multi-task scenes such as submarine wide area terrain exploration, water quality monitoring, information collection, emergency rescue and the like, it is important to periodically recycle the AUV for energy supply. The AUV main body is provided with the hanging ring which is an effective means for realizing quick hanging and recovering operation. However, for wide-speed-range AUVs, where the range of speeds is wide (3 kn (Knot, section 1 equals 1 sea/hour) to 50 kn), conventional sling structures introduce significant additional drag during the course of the journey. Particularly, under a high-speed working condition, the resistance is increased rapidly mainly by pressure difference resistance, so that the integral sailing resistance of the AUV is greatly raised, the energy consumption is increased, the flow noise level is more likely to be increased obviously, and the tasks such as acoustic detection and the like are adversely affected. Disclosure of Invention In order to solve the problem of increased AUV resistance caused by the addition of the lifting ring, the embodiment of the application provides a drag reduction wing type lifting ring and a wide-speed-range AUV. For this purpose, the following technical scheme is adopted in the embodiment of the application: the drag reduction wing type lifting ring comprises a lifting ring body, wherein wing type of the lifting ring body is NACA symmetrical wing type, the lifting ring body comprises a first wing type lifting ring and a second wing type lifting ring which are axisymmetric, two sides of the first wing type lifting ring and the second wing type lifting ring, which are far away from each other, are convex arc-shaped curved surfaces, the protruding directions of the two arc-shaped curved surfaces are opposite, and lifting holes for lifting an AUV of an autonomous underwater vehicle are formed in protruding positions of the first wing type lifting ring and the second wing type lifting ring. In this embodiment, rings body comprises "first wing type rings" and "second wing type rings" axisymmetric, and both sides arc curved surface protrusion opposite direction, so, symmetrical structure ensures that rivers follow rings both sides flow when, and the flow field distributes evenly, can not lead to local velocity of flow unusual, resistance uneven because of unilateral arch to balanced flow field. The symmetrical layout can ensure that the wing profile is always in a better attack angle range no matter the AUV sails at a low speed (3 kn) or a high speed (50 kn), maintains the low resistance characteristic (avoids overlarge attack angle of the wing profile caused by flow velocity change and triggers flow separation), and adapts to the AUV in a wide speed range. And the wing-shaped bulge is provided with a hanging hole, so that the hanging hole is fused with the wing-shaped curved surface, a new 'blocking point' is not formed, and the drag reduction design is ensured not to influence the core function of hanging and recycling. Moreover, the airfoil profile is selected from the mature and reliable NACA (National Advisory Committee for Aeronautics, national aviation consultation Committee) series of symmetrical airfoils. The wing profile has rich public hydrodynamic database support, and is verified by a large number of engineering practices. The low resistance characteristic can effectively improve the flowing structure around the AUV shell and the hanging ring, obviously inhibit the flowing separation, thereby reducing navigation resistance and propulsion energy consumption and effectively reducing flow induced noise. As an implementation manner, the first wing-shaped hanging ring and the second wing-shaped hanging ring are detachably installed on the autonomous underwater vehicle AUV after being mutually clasped. In this embodiment, the first wing-shaped suspension ring and the second wing-shaped suspension ring are designed in a form of being mutually clasped, i.e. the arc-shaped curved surfaces of the first wing-shaped suspension ri