Acceleration control method in ship top speed state
By adjusting the propeller height or angle to change the immersion depth and increase the reverse thrust, the problem of limited speed increase at the maximum speed of the boat was solved, and a further acceleration effect was achieved.
Patent Information
- Application Number
- CN202410972594.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2026-01-20
AI Technical Summary
Existing technologies offer limited speed increases when vessels are at their maximum speed, and traditional methods such as increasing the number of engines and optimizing hull lines are not very effective.
When the boat is at maximum throttle and in a planing state, raising the height of the outboard motor propeller or adjusting the tilt angle can change the propeller's immersion depth, increase thrust, and reduce water resistance.
By changing the immersion depth of the propeller, the reverse thrust of the boat at maximum speed is increased, thereby achieving a further acceleration effect.
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of ship control, and particularly relates to a ship acceleration control method in an extreme speed state. BACKGROUND
[0002] With the popularization of the ship market, people are constantly pursuing the limit of ship speed, but for the outboard engine with selected power, further speed-up encounters a bottleneck, and the existing methods are mostly to increase the number of power machines and optimize the ship body line to improve the extreme speed state of the ship, but the speed improvement brought by these methods is limited, therefore, the present application provides a ship acceleration control method in an extreme speed state. SUMMARY
[0003] The present application aims to make up for the shortcomings of the prior art, and provides a ship acceleration control method in an extreme speed state, which adopts the following technical scheme: when the ship throttle is in a maximum state and the ship is in a sliding state, the height of the outboard engine propeller is increased, so that the propeller is exposed to the liquid surface to reach a half-submerged state, at this time, the air intervention can increase the counter thrust of the ship, so as to further accelerate in the extreme speed state.
[0004] As another alternative preferred scheme: the propeller height is increased by increasing the lifting angle, when the lifting angle is increased, the relative angle between the outboard engine and the ship body is increased, at this time, the attack angle of the ship is increased, and the contact area between the bow part of the ship and the liquid is further reduced, at this time, the water resistance is reduced, and the ship speed is further increased.
[0005] Compared with the prior art, the present application has the beneficial effects that: by changing the immersion depth of the propeller, the counter thrust of the ship is increased, so as to further accelerate in the extreme speed state of the ship. DETAILED DESCRIPTION
[0006] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.
[0007] In the description of the specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction and combination.
[0008] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, unless otherwise specifically limited.
[0009] The acceleration control method of the ship in the high speed state of the present application: when the ship throttle is in the maximum state and the ship is in the sliding state, the height of the outboard engine propeller is increased, so that the propeller is exposed to the liquid surface to reach the semi-submerged state. At this time, due to the intervention of air, the counter thrust received by the ship can be increased, thereby achieving further acceleration in the high speed state.
[0010] As another alternative preferred solution: increasing the height of the propeller is achieved by increasing the lifting angle. When the lifting angle is increased, the relative angle between the outboard engine and the ship body is increased. At this time, the angle of attack of the ship is increased, and the contact area between the bow of the ship and the liquid is further reduced. At this time, the water resistance is reduced, and the speed of the ship is further increased.
[0011] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A method of acceleration control in a high speed state of a marine vessel, characterized by: When the boat throttle is in the maximum state and the boat is in the sliding state, the height of the outboard propeller is increased, so that the propeller is exposed to the liquid surface to reach the semi-submerged state. At this time, due to the intervention of air, the counter thrust received by the boat can be increased, so as to achieve further acceleration in the maximum speed state.
2. The acceleration control method according to claim 1, characterized by: The increase of the propeller height is realized by increasing the lifting angle. When the lifting angle is increased, the relative angle between the outboard and the hull is increased, at this time, the angle of attack of the boat is increased, and the contact area between the bow of the boat and the liquid is further reduced, at this time, the water resistance is reduced, and the speed of the boat is further increased.