JPS6094895A - Sailing ship - Google Patents

Abstract

PURPOSE:To exhibit high interference effect by employing a multi-blade type hard sail to enable free rotation as a whole while enabling rotation of each blade type hard said simultaneously. CONSTITUTION:Three blade type hard sails 1a-1c are arranged with predetermined interval then the upper end of each blade type hard sail is supported integrally by a straightener/supporting board 3 through a blade supporting pin 2. While the lower end of each blade type hard sail is supported integrally in similar manner by a horizontal straightener/supporting board 5 through a blade supporting pin 4, and the lower end section of blade is jointed with two rods 6 to enable rotation of each blade type hard sail 1a-1c simultaneously in same direction by same angle. The central portion of supporting board 5 is supported on a sail post 8 standing from the deck 7 through a turn table 9 for supporting the blade, then the turn table 9 is rotated by a rotary system 10 thus to the plural blade type hard sail as a whole. Each blade type hard sail can be rotated through the rod 6 through rotation of a shaft metal 11 for rotating the blade.

Description

Detailed Description of the Invention The present invention is a multi-winged hard sail in which a plurality of irregularly shaped hard sails are arranged and integrated so that the interference effect between the wings can be maximized. It concerns a sailing ship that can rotate.

In a conventional sailing ship, as shown in FIG. There is one in which the sail 22 is rotated by driving the direction 23.

However, since the sails of the conventional sailing ships mentioned above have a single wing, there is no mutual interference effect, and the wing thickness is thin, so there is a problem that the wing performance is poor.

In view of the fact that in order to make maximum use of the propulsion force generated by the sails of a sailing ship, it is decided based on various conditions such as the shape of the sails and the arrangement of the sails, the present invention has developed an airfoil-shaped sail with a thick sail and a wing-shaped sail. This was done with the aim of improving the wing performance of a double-winged hard sail to maximize the so-called interference effect. The double-wing hard sail can always be rotated to the optimal position for wing performance.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example of a sail in a sailing ship of the present invention.
Arrange three hard sails 1a, 1b, and 1c at predetermined intervals,
The upper end of each π-type hard sail 1a, lb, and Ic is integrally supported by a rectifying blade and support plate 3 via a blade support bin and rotation center shaft 2 provided at its axis, and each Type hard sail 1a,
The lower ends of the sails 1b and lc are integrally supported by a horizontal straightening blade and support plate 5 via a blade support pin and rotation center shaft 4 provided at the axis thereof, and each of the π-shaped hard sails 1a, The wing tips at the lower ends of Ib and lc are connected by two rods 6 extending horizontally so that each π-shaped hard sail 1a, Ib and Ic can rotate in the same direction at the same time and at the same angle. Use it as a sail.

The center part of the lower end straightening blade/support plate 5 in the double-winged hard sail is supported via a wing support turntable 9 on a mast 8 erected on the deck 7 of the ship, and a rotating device equipped with a hydraulic motor is installed. By rotating the turntable 9 at @10, the double-winged hard sail can be rotated as a whole, and the wing connecting the lower end rectifying blade/support plate 5 and the central π-shaped hard sail 1a Each π-shaped hard sail 1a is connected via the rod 6 by rotating the rotating shaft hardware 11 with a rotating device (not shown).

1b and Ic can be rotated to any angle at the same time.

Note that the rotation device 10 has a locking mechanism for the mast 8. 12 is the wind direction line, and 13 is the ship's traveling direction.

Now, the angle between the ship's direction of travel and the wind direction (incident angle) β
When the state changes from the state shown in FIG. 3 to the state shown in FIG. By rotating the sail 1a, other π-type hard sails 1b and l are connected via the rod 6.
c at the same time, the direction of the double-wing hard sail is changed from Fig. 3 to Fig. 4. As a result, the angle γ (stagger angle) formed between the direction perpendicular to the axis of the sails 1a, lb, and lc and the wind direction line
can be set at an optimal position with respect to the assumed angle of incidence β.

In addition, if the angle of incidence β changes significantly from the state shown in FIG. 4 to the state shown in FIG. By rotating the shaft hardware 11, the central sail 1a and the other sails 1b and Ic are simultaneously rotated in the same direction so that they are set at the optimum wing position as shown in FIG. α is the angle of attack of the wind.

In the sailboat of the present invention, the sail is a double-wing hard sail as described above, and since the sails and the wing support turntable can rotate, a high interference effect on wing performance can be expected.

That is, if CL is the lift coefficient when each π-type hard sail 1a, 1b, and one IC are arranged individually, then in the double-wing hard sail arranged as shown in Fig. 2, the center sail 1a is The lift coefficient CL' is expressed as CL' = -CL (This is an equation for a straight blade row in wing theory. K is an interference coefficient).

K is approximated as follows.

d: Different intervals here! Assuming i=1.2 and calculating the value of K, when the γ angle is 0 to less than 45'', K≦1.0, and when the γ angle is 45° or more, K≧1.0.

Therefore, in the present invention, the K value is 1.0 or more, that is, γ
Rotation of the double-wing type hard sail by rotating the wing support turntable 9 so that the angle is 45 degrees or more, and rotation of the π-shaped hard sails 1a, Ib, 10 by rotating the shaft metal fitting 11 for flash rotation. to ensure that the wing is set at the optimal position for performance.

In addition, when there is no wind, B wind stand, etc., the rotation device 10 with the mast 8 is used.
By unlocking the sails ia, ib, i
It goes without saying that c is a weather vane, and that the wind pressure exerted on the sail and rotating device is small and safe, and that the number of π-shaped hard sails 1a, Ib, and Ic is arbitrary.

As described above, according to the sailing ship of the present invention, the sails are double-winged hard sails, and the entire sail can be rotated arbitrarily, and the π-shaped hard sails themselves can also be rotated at the same time. The excellent effect of being able to optimally set the direction of the multi-wing rigid sail and wings in accordance with the angle formed by the wind direction and the wind direction (incidence angle), and to obtain a high interference effect on wing performance. Qinshi 4! do.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a conventional example, FIG. 2 is an example of a sail in a sailboat according to the present invention, and FIGS. 3 to 5 are operational diagrams showing the state of the sail when the wind direction changes. Ia, Ib, and 1c are wing-shaped sand sails, 3 and 5 are rectifier and support plates, 6 is a rod, 1 is a deck, 8 is a mast, 9 is a wing support turntable, and 10 is a rotating device. Patent application person Ishikawajima Harima Heavy Industries Co., Ltd. Patent applicant agent

Claims (1)

[Claims] 1) A plurality of irregularly shaped hard sails are erected side by side, and connected by horizontally extending rods so that the plurality of irregularly shaped hard sails can be rotated at the same time to change their direction to form a double-winged hard sail, and the above-mentioned double-winged hard sail is In addition, in order to rotate the double-winged hard sail itself, the double-winged hard sail is supported on the mast on the deck via a turntable, and the turning mechanism is provided. A sailing ship characterized by being equipped with a device for rotating a table.