Suspended Mast Shade Canopy Wind Resistance
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Solution Overview
Problem
There is a need for an adjustable and easily detachable shade canopy with strong central support that can withstand high winds without deforming and protect against flying projectiles, and can be quickly installed and removed for outdoor events.
Innovation Solution
A mast-supported shade structure with a tubular suspended mast system, flange plates, cantilever rafters, and a tensioning mechanism to secure a fabric canopy, which includes a telescoping mast design, water-resistant coatings, and grounding wire for safety, allowing for adjustable angles and secure attachment to columns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional ground-based shade structure is used, then it provides stable support, but it is difficult to install and remove quickly
Solution Approach 1:
The shade structure is divided into modular components including telescoping mast sections, separate canopy panels, and independent support arms. This segmentation allows each component to be easily assembled and disassembled, enabling quick installation and removal while maintaining structural stability during use.
2Strength
If a fixed rigid canopy structure is used, then it provides strong support, but it deforms and twists in high winds
Solution Approach 1:
The canopy structure incorporates dynamic elements including telescoping mast sections that can adjust height, flexible support arms with pivot points, and tensioning mechanisms. These dynamic features allow the structure to flex and adapt to wind forces rather than rigidly resisting them, preventing deformation while maintaining strength.
Solution Approach 2:
The structure allows parameter changes in response to environmental conditions, including adjusting mast height, modifying canopy tension, and repositioning support arms. These parameter adjustments enable the canopy to optimize its structural properties for different wind conditions, maintaining strength without rigid deformation.
3Reliability
If a permanent shade structure is installed, then it provides continuous protection, but it cannot be removed to protect from flying projectiles
Solution Approach 1:
The canopy is constructed from modular, detachable panels connected by quick-release fasteners and clamps. This segmentation allows the entire canopy or individual sections to be rapidly removed or reconfigured, providing adaptability for different protection needs while maintaining reliable shade coverage during normal operation.
Solution Approach 2:
The structure transitions from a static permanent installation to a dynamic removable system through telescoping masts, adjustable connections, and detachable canopy panels. This dynamic design enables the canopy to be quickly deployed for protection and just as quickly removed or reconfigured for projectile safety scenarios.
4Strength
If a solid non-telescoping mast is used, then it provides maximum strength, but it is heavy and difficult to install
Solution Approach 1:
The mast is constructed as a telescoping structure with nested tubular sections that slide within one another. This nesting design allows the mast to achieve the strength of a solid structure when extended and locked, while remaining compact and lightweight during storage and transport, significantly reducing installation effort.
Solution Approach 2:
The mast transitions from a static solid structure to a dynamic telescoping system that can adjust its configuration. When deployed, the mast extends to full length and locks into place providing maximum strength; during installation and storage, it contracts to a compact form reducing weight and handling difficulty.
Data Source
AI summary
A shade structure having a suspended mast with a tubular body non-removably secured between at least two suspended mast support segments forming a suspended engagement. The shade structure has at least a first flange plate connecting a first mast transition segment to a first cantilever rafter and a second flange plate connecting a second mast transition segment to a second cantilever rafter. At least one column extension assembly simultaneously supports the cantilever rafters and connects each cantilever rafter to a column. A fabric canopy is disposed over and around the suspended mast and over the suspended mast support segments and cantilever rafters. Means to engage the fabric canopy is used with each cantilever rafter on a second cantilever rafter end and tensioning means secured to at least one of the cantilever rafter or the suspended mast is used for tensioning the fabric canopy.