Jet Propulsion Boat Control With Auxiliary Lateral Thrust
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Solution Overview
Problem
Existing jet propulsion boats lack a high degree of freedom in operation, limiting their maneuverability and control capabilities.
Innovation Solution
A jet propulsion boat equipped with a main propulsion device, an auxiliary propulsion device, and a control device that allows switching between modes to enhance maneuverability, including a direction change device for the main propulsion device and an auxiliary propulsion device, enabling various control modes for precise navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only a main propulsion device is used, then the device complexity is reduced, but the degree of freedom in operation and maneuverability deteriorate
Solution Approach 1:
The propulsion system is segmented into a main propulsion device for forward/reverse movement and an auxiliary propulsion device for lateral movement, allowing independent control of different movement dimensions and thereby increasing operational freedom without excessive complexity
Solution Approach 2:
The control device serves multiple functions by switching between different control modes (main control mode, combined mode, and auxiliary control mode), enabling a single system to handle various operational scenarios and increasing adaptability
2Ease of operation
If a direction change device is added to the main propulsion device, then the maneuverability is improved, but the device complexity increases
Solution Approach 1:
The direction change function is separated from the main propulsion device and implemented as a distinct auxiliary propulsion device, allowing the main device to remain simple while the auxiliary device provides the necessary directional control capability
Solution Approach 2:
The auxiliary propulsion device acts as an intermediary mechanism that enables lateral movement and directional control without requiring complex modifications to the main propulsion system, simplifying the overall design
3Adaptability or versatility
If an auxiliary propulsion device is added, then the control flexibility is enhanced, but the device complexity increases
Solution Approach 1:
The control device is designed with multi-functionality to manage both the main and auxiliary propulsion devices, switching between different control modes to provide flexible control without requiring separate control systems for each device
Solution Approach 2:
The control functions for the main propulsion device and auxiliary propulsion device are merged into a single control device that can operate in different modes, reducing overall system complexity while maintaining control flexibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides enhanced maneuverability and control flexibility, allowing the boat to navigate in multiple directions while maintaining the orientation of the bow, improving operational freedom and ease of use.
Implementation Method 1
a main propulsion device including a jet device that jets a jet water stream from the boat body
Implementation Method 2
an auxiliary propulsion device provided on the boat body to impart a propulsion force in a lateral direction to the boat body
Data Source
AI summary
A jet propulsion boat includes a boat body; a main propulsion device including a jet device that jets a jet water stream from the boat body, and a direction change device that changes, in a lateral direction, an orientation of the jet water stream having been jetted; an auxiliary propulsion device provided on the boat body to impart a propulsion force in a lateral direction to the boat body; and a control device that controls the main propulsion device and the auxiliary propulsion device, and switches a control mode of the main propulsion device and the auxiliary propulsion device between a plurality of modes, in which the control mode includes a main control mode for driving the main propulsion device and stopping the auxiliary propulsion device to move the boat body, and a combined mode for driving both the main propulsion device and the auxiliary propulsion device to move the boat body.