Arcuate Cover for Inflatable Module Protection and Storage

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Solution Overview

Problem

Inflatable modular structures face challenges in deployment, including protecting the flexible hull from damage during launch, ensuring window integrity, providing a secure surface for equipment attachment in microgravity, and efficient storage and access within the module.

Innovation Solution

A cover with an arcuate exterior surface and a flat segment, featuring attachment elements and ribs, that provides protection for the inflatable shell during launch, secures items in place post-deployment, and allows removable attachment to the core and internal surface for access and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the core is designed with sharp edges or protrusions to reduce weight, then the weight of the module is reduced, but the flexible hull may be damaged during launch

Engineering Contradiction:
Improveweight of the moduleVSAvoiddamage to the bladder
Core Design Contradiction:
Weight of moving objectVSObject-affected harmful factors

Solution Approach 1:

A smooth-surfaced cover is introduced as an intermediary component between the core and the flexible bladder. The cover has attachment elements that secure it to the core, while its smooth exterior prevents contact damage to the bladder during launch and deployment. This mediator allows the core to maintain its weight-reducing sharp edges while protecting the bladder.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the smooth surface cover is made rigid to protect the bladder, then protection is improved, but windows may break due to forces exerted on the cover

Engineering Contradiction:
Improveprotection for the bladderVSAvoidintegrity of the window
Core Design Contradiction:
Object-affected harmful factorsVSStrength

Solution Approach 1:

The cover is designed with differentiated local properties: the exterior surface is smooth for bladder protection, while the interior surface has recesses or compliant features near window locations that reduce force concentration. This local quality variation allows the cover to protect the bladder while preventing window breakage under launch forces.

Inventive Principle:
Principle #3Local quality

3Ease of operation

If the cover is made removable to allow access to the internal volume, then ease of operation is improved, but the complexity of the deployment process increases

Engineering Contradiction:
Improveaccess to internal volumeVSAvoiddeployment process
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The cover is segmented into modular sections with attachment elements that allow selective removal. Critical areas such as hatches or access ports can be opened or removed independently while other portions remain secured to the core. This segmentation provides flexible access without requiring complete disassembly, balancing ease of operation with deployment simplicity.

Inventive Principle:
Principle #1Segmentation

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 cover effectively protects the inflatable shell during launch, supports equipment attachment, and facilitates efficient storage and access within the module, enhancing the deployment and operational capabilities of inflatable modular structures.

Implementation Method 1

In the deployed configuration the inflatable shell is pumped up with air

Methodology Applied
Scientific EffectGas pressure expansion: Pressure Increase

Data Source

PatentUS8578663B2Cover for use with an inflatable modular structure
Publication Date: 2013.11.12 BIGELOW AEROSPACE LLC
  • US8578663B2 patent drawing
  • US8578663B2 patent drawing
  • US8578663B2 patent drawing

AI summary

A cover for an inflatable modular structure is claimed. A plurality of covers fit on the core of an inflatable module. An inflatable shell is attached to the core enclosing the covers and the core. In the pre-deployed configuration, the inflatable shell is folded over the covers and the covers provide a measure of protection for the shell. In the deployed state, the inflatable shell is filled with air and expands to its deployed configuration. The covers can be removed from core and attached to the inside of the shell. The covers then function as a platform to secure items in place.