U-type sail structure

A sail and U-shaped technology, which is applied in the field of U-shaped sail structure, can solve the problems of reducing the reliability of the sail system, complicated flap control methods, and increasing the complexity of the sail system, and achieves a wide range of effective wind directions for boosting, a simple structure, The effect of neat appearance

Inactive Publication Date: 2015-10-28
中国船舶重工集团公司第七〇二研究所
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AI Technical Summary

Problems solved by technology

At present, the existing sails use multi-section combined airfoils. Although the combined airfoil with flaps is widely used in the aviation field because of its high aerodynamic characteristics, the structure of the combined airfoil and the control method of the flaps are quite complicated. If The use of this multi-section combined airfoil for sail-assisted ships will greatly increase the complexity and construction cost of the sail system, and reduce the reliability of the sail system. Type sails are often unable to be practically applied in engineering

Method used

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Embodiment Construction

[0025] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0026] Such as figure 2 As shown, the U-shaped sail structure includes the sail body 3, the sail body 3 is connected to the sail base 5 through the sail mast 4, the cross section of the sail body 3 forms a section structure 1, and the section structure 1 adopts a front-rear symmetrical aerodynamic shape, as shown in figure 1 As shown, the cross-sectional structure 1 is integrally connected by a pair of main body parts 101, a pair of arched parts 102 and a pair of round guide parts 103 to form a "U"-shaped structure. Arranged symmetrically around the center of the sail rotation axis 3, such as figure 1 As shown, the thickness of the main body 101 shows a decreasing trend along the arched portion 102, and the above-mentioned rounded portion 103 is located at the outermost side of the “U”-shaped structure, and the rounded portion 103 is con...

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Abstract

The invention relates to a U-type sail structure which comprises a sail body. The sail body is connected with a sail base through a sail mast. A sectional structure is formed by the cross section of the sail body, and is of a U-shaped structure formed by integrally connecting a pair of body portions, a pair of arch portions and a pair of guide round portions. The body portions, the arch portions and the guide round portions are symmetrically arranged with the rotary axis of a sail as a center. The U-type sail structure is simple, clean and tidy in appearance and high in maximum pneumatic lift coefficient. The maximum lift coefficient of the sectional structure of the sail body can be above 3.0, and is more than 2.3 times that of a common wing type, and the boosting efficiency of the sail can be greatly improved. The aerodynamic force performance optimization design technology is adopted in the sectional structure of the sail body. On the premise of not increasing the complexity of the sail structure, the lift efficiency of the sail is effectively improved through the section line type design of the sail. Compared with a multi-section combined type wing section, the U-type sail structure has the beneficial effect of being simple.

Description

technical field [0001] The invention relates to a sail-assisted ship, in particular to a U-shaped sail structure. Background technique [0002] Modern sails assist ships, and the performance of sails is mainly reflected in the magnitude of the thrust component generated by the aerodynamic lift of the sails in the forward direction of the ship. The greater the aerodynamic lift per unit area of ​​the sail, the greater the thrust component it generates in the forward direction, and the better the boosting effect of the sail. The cross-sectional geometric shape (airfoil) of the sail is the main factor that determines the aerodynamic lift characteristics of the sail per unit area. Therefore, the sail profile design technology is the key technology for the aerodynamic design of the sail. At present, the existing sails use multi-section combined airfoils. Although the combined airfoil with flaps is widely used in the aviation field because of its high aerodynamic characteristics, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H9/06B63H9/08
Inventor 潘子英陈纪军吴宝山姚木林张威李明政
Owner 中国船舶重工集团公司第七〇二研究所
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