Aerodynamic Flyer Bow Curvature for Drag Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed rotation of flyer bows in wire twisting machines results in substantial drag, increased energy consumption, machinery wear, and noise due to turbulence, limiting productivity and manufacturing throughput.
Innovation Solution
An aerodynamically shaped flyer bow with an elongate arcuate body and airfoil cross section, featuring a middle portion with a radius of curvature equal to the distance from the axis of rotation, reduces drag by stabilizing the rotation and minimizing lift, allowing for higher speeds or lower power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotation speed of the flyer bow is increased to achieve higher productivity, then manufacturing throughput is improved, but drag and power consumption increase substantially
Solution Approach 1:
The flyer bow is designed with a curved aerodynamic cross-section where the centerline of the cross-section has a radius of curvature substantially equal to the distance from the axis of rotation. This curvature alignment ensures that the aerodynamic forces act through the center of rotation, minimizing lift and stabilizing the rotation, thereby reducing drag and power consumption at high speeds
2Productivity
If the rotation speed of the flyer bow is increased to achieve higher productivity, then manufacturing throughput is improved, but drag increases requiring more powerful equipment
Solution Approach 1:
The aerodynamic cross-section with properly aligned radius of curvature minimizes lift forces that cause instability and increased drag. By ensuring the centerline radius matches the rotational radius, the design reduces aerodynamic resistance, allowing higher speeds without proportionally increased drag
3Productivity
If the rotation speed of the flyer bow is increased to achieve higher productivity, then manufacturing throughput is improved, but turbulence increases resulting in greater machinery wear and noise
Solution Approach 1:
The curved aerodynamic cross-section with matched radius of curvature stabilizes the rotational motion by aligning aerodynamic forces through the center of rotation. This stabilization reduces turbulence and vibrations, thereby decreasing machinery wear and noise while maintaining high rotation speeds
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 aerodynamic design reduces power consumption and increases achievable wrapping speeds, enhancing manufacturing throughput while minimizing noise, vibration, and machine wear.
Implementation Method 1
drag on the bow becomes substantial, requiring more energy and more powerful equipment to maintain high speeds
Implementation Method 2
minimizing lift, allowing for higher speeds or lower power consumption
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A flyer bow (1) including an elongate arcuate body (2) being configured to be rotated about an axis of rotation (10), the middle portion (3) includes an inner surface (24), an outer surface (23), a leading edge (21), and a trailing edge (22), the inner surface(24) and the outer surface (23) cooperate to form a cross section (30), and at least one centerline (26) of the cross section (30) includes a radius of curvature substantially equal to a distance (d) between the elongate arcuate body (2) at the location of the at least one centerline and the axis of rotation (10). Moreover, the middle portion includes an elongate void (25) along the longitudinal axis of the elongate arcuate body (2) for receiving wires to be processed and at least one slot (41) in fluid communication with the void (25) and the inner or outer surface (24, 23) or the leading or trailing edge (21, 22). The flyer bow (1) has reduced drag and enables removal of dust during a wire processing operation.