Verification and Validation of an Innovative Inflatable Structure

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CB83C
Agency Tracking Number: 094230
Amount: $599,688.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: X4.02
Solicitation Number: N/A
Small Business Information
AZ, Tucson, AZ, 85714-2221
DUNS: 837002294
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Grant Anderson
 Principal Investigator
 (520) 382-4812
 ganderson@paragonsdc.com
Business Contact
 Carole Hammond
Title: Business Official
Phone: (520) 382-4814
Email: chammond@paragonsdc.com
Research Institution
 Stub
Abstract
An inflatable habitat is a pressure vessel with flexible shell. Notable features such as low weight, large inflated operational volume, and small pre-deployment volume offer significant advantages over traditional rigid metallic and composite habitat structures. Conventional designs suffer from indeterminacy of load sharing between meridional and circumferential members as well as the internally rigid metal support structure. The designs must functionally index the meridional and circumferential members to one another to minimize sensitivity to manufacturing, handling and operational trauma, all the while maintaining their independent load carrying roles. This design process results in oversized members to account for load uncertainties and substantially increases the handling, manufacturing, and integration risks. The unique Ultra High Performance Vessel (UHPV) technology provides the solution to the design and manufacture of robust inflatable structures with exceptional accuracy and dimensional stability. UHPV technology provides high shell load containment architecture with fully determinate load pathways that can be modeled mathematically. The lightweight, low cost inflatable fabric structure, consisting of barrier film layers, carrier cloth containment layers, and pressure restraint tendons can be designed and fabricated to provide an accurate geometry without the need for an internal skeletal frame. Eliminating the need for a rigid internal load-bearing frame allows the collapsed inflatable to be packaged in the smallest possible volume. To bring this innovative inflatable design to use for surface habitats, airlocks and myriad other space environment and containment applications, a verification and validation plan using both testing and predictive analytical models is proposed to conclusively demonstrate that the fully load-determinate UHPV can meet all structural design requirements thereby allowing for decreased mass and risk.

* Information listed above is at the time of submission. *

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