Awning Airfoil Spoiler System for Wind Flapping Reduction

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Solution Overview

Problem

Awnings with large fabric areas often flap aggressively in windy conditions, causing damage and discomfort, as existing solutions fail to effectively manage airflow and reduce flapping.

Innovation Solution

An awning airfoil system comprising airfoils attached above and below the awning fabric, using a clamp system with adjustable connectors to spoil airflow and reduce flapping by disrupting wind flow across both the top and bottom surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If awning fabric is made large to provide extensive shelter, then shelter area is improved, but wind capture increases causing aggressive flapping

Engineering Contradiction:
Improveawning shelter areaVSAvoidwind capture causing flapping
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

Airfoils are introduced as intermediary elements between the wind and the awning fabric. These airfoils disrupt and redirect airflow patterns, preventing wind from directly interacting with and causing flapping of the large awning fabric area.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The airfoils convert the harmful wind flow that causes flapping into beneficial redirected airflow. By strategically positioning airfoils, the wind energy is redirected along the awning structure, reducing flapping while maintaining the large shelter area.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Object-affected harmful factors

If airfoils are added to spoil airflow and reduce flapping, then flapping reduction is improved, but device complexity increases

Engineering Contradiction:
Improveawning flapping reductionVSAvoidawning system complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The airfoil system is segmented into multiple independent airfoil units that can be attached at different locations along the awning. This segmentation allows the complex airflow management function to be divided into simpler, modular components that are easier to install and maintain.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Airfoils with curved, aerodynamic shapes are used to efficiently disrupt and redirect airflow. The curved geometry of the airfoils naturally guides wind flow along smooth paths, reducing turbulence and flapping while maintaining structural simplicity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Object-affected harmful factors

If airfoils are positioned at specific angles and orientations, then airflow disruption effectiveness is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveairflow disruption effectivenessVSAvoidairfoil angle and position precision
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The airfoil system utilizes specific geometric parameters (curvature, angle, length) that have been optimized for airflow disruption. By standardizing these parameters across multiple airfoils, the system achieves effective airflow management while reducing the need for custom precision manufacturing of each individual airfoil.

Inventive Principle:
Principle #35Parameter changes

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 airfoil system significantly reduces awning fabric flapping during windy conditions by disrupting airflow, minimizing damage and noise, and providing effective shelter from sun and rain.

Implementation Method 1

an awning airfoil system provided herein can include airfoils attached above and below an awning to spoil airflow on both sides of the awning

Methodology Applied
Scientific EffectAerodynamic flow disruption: Aerofoil

Implementation Method 2

Some embodiments of an awning airfoil system provided herein can spoil airflow so as to reduce flapping of awning fabric

Methodology Applied
Scientific EffectAirflow spoilage: Turbulence

Data Source

PatentUS9523214B2Awning airfoil
Publication Date: 2016.12.20 PHILLIP ROSS PREWITT
  • US9523214B2 patent drawing
  • US9523214B2 patent drawing
  • US9523214B2 patent drawing

AI summary

This document provides an apparatus including an awning fastener configured for attaching to an awning. The apparatus can further include a first airfoil connected to the awning fastener. The apparatus can further include a second airfoil connected to the awning fastener and positioned opposite of the first airfoil such that the first and second airfoils are positionable on opposite sides of the awning when the awning fastener is connected to the awning.