Channel Propeller Blades With Cyclic Motion to Cut Energy Loss
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Solution Overview
Problem
Existing propeller systems for ship propulsion suffer from energy losses due to purely rotational motion of blades, reducing the efficacy and efficiency of kinetic interaction with water.
Innovation Solution
A propeller system with a supporting body and a kinetic interaction system featuring rotatory blades mounted on a common wheel, where the blades rotate in a cyclic trajectory, alternating between active and idle orientations relative to the fluid flow, optimizing kinetic energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional propeller with purely rotational blade motion is used, then the propulsion energy is high, but energy losses occur reducing the efficacy and efficiency of kinetic interaction with water
Solution Approach 1:
The patent applies the dynamics principle by transitioning from purely rotational blade motion to a cyclic trajectory motion where blades move through a combination of rotation and translation. The kinetic interaction system moves blades along a cyclic path that includes both rotational and translational components, allowing blades to alternately engage and disengage from the fluid flow. This dynamic motion pattern reduces energy losses by minimizing parasitic rotational drag while maintaining effective propulsion through controlled blade engagement with the water.
Solution Approach 2:
The patent implements periodic action through the cyclic trajectory of the blades, which repeatedly alternate between active engagement phases and idle disengagement phases. During each cycle, blades perform a series of controlled movements including approaching the fluid flow, interacting propulsively, and then withdrawing. This periodic pattern allows the system to optimize kinetic interaction by timing blade engagement to coincide with favorable flow conditions while minimizing energy-wasting rotational motion during less effective phases.
2Ease of operation
If blades rotate continuously in a conventional propeller, then propulsion is maintained, but efficacy and efficiency of kinetic interaction are reduced
Solution Approach 1:
The patent applies segmentation by dividing the continuous rotational motion into distinct phases within a cyclic trajectory. The blade motion is segmented into multiple discrete movements including approach, engagement, propulsion, and withdrawal phases. This segmentation allows each phase to be optimized independently - engagement phases maximize kinetic interaction efficacy while withdrawal phases minimize energy loss by reducing parasitic drag. The cyclic trajectory effectively breaks down continuous rotation into manageable operational segments.
Solution Approach 2:
The patent maintains continuity of useful action through the cyclic trajectory system where blades continuously alternate between active and idle orientations. While individual blades may be in idle phases, other blades in the system are actively engaging the fluid flow, ensuring continuous propulsion. The cyclic motion ensures that the transition between active and idle states is smooth and continuous, preventing interruptions in the useful propulsive action while allowing individual blades to minimize energy losses during their idle periods.
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 system achieves a highly efficient and constant thrust power by minimizing energy loss through rotational motion, enhancing the kinetic interaction with fluid flow.
Implementation Method 1
the propellor system exerts a thrust on the fluid flow by which the fluid flow is accelerated
Implementation Method 2
the propellor system is suitable to transfer kinetic energy from the propellor system to a unidirectional fluid flow in the channel
Implementation Method 3
kinetic energy of a fluid flow that is led through the channel drives the propellor system to be moved, such that the kinetic energy of the fluid flow is harvested by the propellor system
Data Source
AI summary
Propellor system which is suitable for kinetic interaction with a fluid that flows unidirectionally through a channel, wherein the propellor system comprises a supporting body which is configured to be integrated within the channel in a fixed position, and a kinetic interaction system which is provided on the supporting body such that the kinetic interaction system extends in an interior area of the channel when the supporting body is integrated in the fixed position, wherein the kinetic interaction system is provided with cither at least one pair of rotatory blades, or a single rotatory blade, and wherein each rotatory blade performs a combinatory rotation.


