Design and Materials Study on Secondary Structures in Deployable Planetary and Space Habitats

Hinkle, Jonathan; Lin, John; Kling, Daniel

doi:10.2514/6.2011-2024

Cited by 7 publications

(11 citation statements)

References 3 publications

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“…Among aramid fibers, Vectran [71] was selected for the construction of high-strength fabrics of the inflatable plug. Vectran is commonly used in aerospace applications where high-strength, high foldability with minimum degradation is required [72][73][74][75][76][77][78][79][80][81][82][83]. Phase 2 provided much useful information regarding deployment and initial inflation characteristics, but it culminated with a failure of the full-scale, single-layer Vectran fabric plug.…”

Section: Results Of Experimental Evaluationsmentioning

confidence: 99%

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Sosa

Thompson

Holter

et al. 2020

J Infrastruct Preserv Resil

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The protection of underground civil infrastructure continues to be a high priority for transportation and transit security agencies. In particular, rail transit tunnels running under bodies of water are susceptible to disruptions due to flooding caused by extraordinary climatic events such as hurricanes or other events resulting from human activities. Several events have taken place in the past decades that have demonstrated the need to mitigate vulnerabilities or, at least, minimize the consequences of catastrophic events. Although it is impossible to prevent all situations that can lead to flooding, damage can be substantially decreased by reducing the area affected by the event. To minimize the effects of an event, a possible approach is to compartmentalize the tunnel system by creating temporary barriers that can contain the propagation of flooding until a more permanent solution can be implemented. One way to create a temporary barrier is by the deployment of a large-scale inflatable structure, also known as an inflatable plug. In such an application, the inflatable structure is prepared for placement, either permanently or temporally, and maintained ready for deployment, inflation, and pressurization when needed. The internal plug pressure imparts a normal force against the tunnel wall surface with the friction between the plug and tunnel surfaces opposing axial movement of the plug. The sealing effectiveness depends on the ability of the inflatable structure to self-deploy and fit, without human intervention, to the intricacies of the perimeter of the conduit being sealed. Primary design constraints include having the plug stowed away from the dynamic envelope of the trains and being able to withhold the pressure of the flooding water. This work presents a compilation of the main aspects of the activities completed for the development of large-scale inflatable structures as part of the Resilient Tunnel Plug (RTP) Project. The main test results and lessons learned are presented to demonstrate the viability of implementing large-scale inflatable plugs for the containment of flooding in rail tunnels systems. Over 400 coupon and specimen tests, 200 reduced scale tests, and 100 full-scale tests were conducted to demonstrate the efficacy of the design of different prototypes over a 10-year research and development project. The culmination of the work was 12 large-scale flooding demonstrations where the inflatable tunnel plug was shown able to be deployed remotely and withstand a simulated flooding event.

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Section: Results Of Experimental Evaluationsmentioning

confidence: 99%

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Sosa

Thompson

Holter

et al. 2020

J Infrastruct Preserv Resil

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“…To solve this problem, the development of space-deployable technology becomes important; its aim is to better reduce the occupied room in spacecraft and maximize the work volume in space. SMP/SMPC is one of the advanced materials to satisfy the purpose, as it can be packaged and stowed in a smaller volume and deployed using some stimuli in space to function [208,209].…”

Section: Expandable Lunar Habitatmentioning

confidence: 99%

“…ILC Dover Company has teamed with NASA Langley Research Center to develop a type of inflatable expandable lunar habitat; the framework of the structure is composed of SMPCs, and the structure achieves the purpose of selfdeployment and high extensive area. In addition, the model was fabricated and the deployable process of the structure was examined in a ground experiment, as demonstrated in figure 26; the results indicated that the materials have good recovery properties under the air pressure deploying test [209]. Also, CRG has developed a self-constructing infrastructure for future moon and Mars missions to reduce the labor burden [210].…”

Section: Expandable Lunar Habitatmentioning

confidence: 99%

Shape memory polymers and their composites in aerospace applications: a review

Liu

et al. 2014

Smart Mater. Struct.

859

543

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As a new class of smart materials, shape memory polymers and their composites (SMPs and SMPCs) can respond to specific external stimulus and remember the original shape. There are many types of stimulus methods to actuate the deformation of SMPs and SMPCs, of which the thermal-and electro-responsive components and structures are common. In this review, the general mechanism of SMPs and SMPCs are first introduced, the stimulus methods are then discussed to demonstrate the shape recovery effect, and finally, the applications of SMPs and SMPCs that are reinforced with fiber materials in aerospace are reviewed. SMPC hinges and booms are discussed in the part on components; the booms can be divided again into foldable SMPC truss booms, coilable SMPC truss booms and storable tubular extendible member (STEM) booms. In terms of SMPC structures, the solar array and deployable panel, reflector antenna and morphing wing are introduced in detail. Considering the factors of weight, recovery force and shock effect, SMPCs are expected to have great potential applications in aerospace.

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“…ILC Dover which is a company that has been involved in many inflatable structures in collaboration with NASA and other research institutions has done a review of different materials that can be applied to inflatable structure [34].Based on their finding, the most suitable material for inflatable structure are flexible materials namely Ultra-High-Molecular-Weight Polyethylene (UHMWPE) such as Dyneema and Spectra;…”

Section: Methodsmentioning

confidence: 99%

Inflatable structure for aerospace application: Historical perspective and future outlook

Dollah

Saad

CheIdris

2018

J. Fundam and Appl Sci.

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This is an overview topic of inflatable structure for aerospace application. An inflatable structure is a promising choice for a wide r application are inflatable wing, space antenna, solar array, inflatable aeroshell and inflatable aerodynamic decelerators. The advantages of inflatable structure are it offers the potential for compact stowing of lightweight structure. This will efficient packaging, easy to deploy and ultimately lead to reduction in mission cost.Historically, inflatable technology has been introduced as a concept in aerospace application with a patent on flying glider th Over the years, many concepts of inflatable were introduced but only a small number of concepts have progress beyond the stage of design and even fewer manage to be completed and used extensively.

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Design and Materials Study on Secondary Structures in Deployable Planetary and Space Habitats

Cited by 7 publications

References 3 publications

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Shape memory polymers and their composites in aerospace applications: a review

Inflatable structure for aerospace application: Historical perspective and future outlook

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