Loop-Blade Propeller for Non-Axial Lift to Axial Thrust
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing propellers struggle to efficiently generate non-axial lift and redirect non-axial fluid flow to create axial thrust, limiting their performance in applications requiring efficient fluid propulsion.
Innovation Solution
A propeller design featuring blades with a configuration that generates non-axial lift and redirects this lift to create axial thrust, utilizing a hub or rim form with loop-type blades and specific parameter sections that enhance non-axial fluid flow conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional propeller blade configurations are used, then the structure is simple and easy to manufacture, but the efficiency in generating and redirecting non-axial fluid flow to create axial thrust is limited
Solution Approach 1:
The blade is divided into multiple parameter sections along its span, with each section having different geometric characteristics (leading edge radius, trailing edge radius, thickness distribution). This segmentation allows optimization of non-axial lift generation in different regions while maintaining manufacturing feasibility through standardized section designs.
Solution Approach 2:
Different portions of the blade are given different local properties: the tip portion has enhanced leading edge radius and specific thickness distribution to maximize non-axial lift, while other sections have optimized characteristics for their specific functional requirements. This local quality optimization improves overall propulsion efficiency without requiring complete redesign of the entire blade.
2Productivity
If the blade configuration is optimized to generate more non-axial lift, then thrust and fluid flow management improve, but the manufacturing precision requirements increase
Solution Approach 1:
The invention specifies optimized parameter ranges for blade geometry (leading edge radius 0.01-0.05 times chord length, trailing edge radius 0.005-0.02 times chord length, thickness distribution profiles) that balance performance with manufacturability. These parameter changes provide clear manufacturing targets while achieving superior thrust generation through enhanced non-axial lift.
3Productivity
If loop-type blade structures with specific parameter sections are used, then non-axial fluid flow conversion is enhanced, but the device complexity increases
Solution Approach 1:
The blade employs curved, loop-type structures with optimized leading and trailing edge radii creating smooth flow paths. The circular arc profiles and continuous curvature transitions enhance non-axial fluid flow conversion by reducing flow separation and improving pressure distribution, while the systematic approach to curvature design maintains manufacturing feasibility.
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 design effectively increases fluid propulsion efficiency by generating and redirecting non-axial lift, enhancing thrust and fluid flow management, particularly in aircraft, watercraft, and air circulation devices.
Implementation Method 1
In a cross-sectional-profile of each of the plurality of blades, the distance from the rotational axis to the leading edge of the blade is greater than the distance from the rotational axis to the trailing edge of the blade
Data Source
AI summary
A propeller having a plurality of blades extending radially outward from a hub, the blades forming a loop. Each loop can have an intake portion, an exhaust portion and a tip portion extending radially outward from the hub and a gap between the intake root and the exhaust root.