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

VSEngineering 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

Engineering Contradiction:
Improveenergy lossVSAvoidpropulsion energy
Core Design Contradiction:
Loss of energyVSProductivity

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.

Inventive Principle:
Principle #15Dynamics

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.

Inventive Principle:
Principle #19Periodic action

2Ease of operation

If blades rotate continuously in a conventional propeller, then propulsion is maintained, but efficacy and efficiency of kinetic interaction are reduced

Engineering Contradiction:
Improveefficacy of kinetic interactionVSAvoidenergy loss
Core Design Contradiction:
Ease of operationVSLoss of energy

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #20Continuity of useful action

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

Methodology Applied
Scientific EffectThrust: Force

Implementation Method 2

the propellor system is suitable to transfer kinetic energy from the propellor system to a unidirectional fluid flow in the channel

Methodology Applied
Scientific EffectKinetic energy transfer: Mechanical Force

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

Methodology Applied
Scientific EffectKinetic energy harvesting: Mechanical Force

Data Source

PatentUS20250369417A1Propellor system which is suitable for kinetic interaction with a fluid that flows unidirectionally through a channel, and a channel for a unidirectional fluid flow provided with such a propellor system
Publication Date: 2025.12.04 TURTLE PROP HTP HOLDING BV
  • US20250369417A1 patent drawing
  • US20250369417A1 patent drawing
  • US20250369417A1 patent drawing

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.