Bistable Deployable Composite Booms With Parabolic Cross-Sections

Lee, Andrew J.; Fernández, Juan M.; Daye, Jacob G.

doi:10.2514/6.2022-2264

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…The manufactured tape spring is L = 838 mm in length with a cross-sectional radius of R = 50.8 mm and subtended angle of α = 122 • , resulting in a flattened height of αR = 108 mm. A layup of [45PW C /0 C /45PW C ] is chosen based on previously verified bistability, 22 where PW C corresponds to the M30S carbon fiber plainweave pre-preg and C corresponds to MR60H carbon fiber unidirectional pre-preg. Both composite materials contain the PMT-F7 epoxy resin matrix that allows for out-of-autoclave curing under vacuum within a conventional oven.…”

Section: Manufacturing Proceduresmentioning

confidence: 99%

“…Bistability is achieved through the choice of laminate layup for tape springs. 21,22 The advantages are much lower constraint requirements under stowage and more controllable self-deployment from having gentler rates of change in strain energy. Compared to a self-deploying monostable tape spring, which will exhibit chaotic unfurling into a series of localized folds as the coiled spool blossoms in an unpredictable manner, a bistable tape spring's spool will simply unroll in a single direction, as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Material properties of thin-ply unidirectional (MR60H/PMT-F7) and plainweave (M30S/PMT-F7) composites, P1 MFC, and DP-460 adhesive 22,28. …”

mentioning

confidence: 99%

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Active deployment of ultra-thin composite booms with piezoelectric actuation

Daye

Lee

2023

Active and Passive Smart Structures and Integrated Systems XVII

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The efficacy of using piezoelectric actuators to initiate the dynamic deployment of bistable composite tape springs is evaluated in this paper. Ultra-thin composite booms such as tape springs and their cross-sectional variants have seen increased popularity in spacecraft structures due to enabling the precise deployment of flexible solar arrays, sails, reflectors, and antennas. They can elastically transition between the deployed “extended” position and the stowed “coiled” position while retaining superior stiffness, thermal properties, mass efficiency, and compactness when compared to thin-shelled metal booms and rigid articulated columns. Bistability in the coiled and extended states allows the boom to exhibit more controllable self-deployment and become reconfigurable, which could allow spacecraft to relocate, redeploy, and adapt to changing environmental conditions or mission objectives. Deployment systems commonly include motors and mechanical restraints that significantly contribute to mechanical complexity and spacecraft weight. Since bistable booms do not rely on elastic instability of packaging to initiate motion, a non-intrusive and lightweight actuation mechanism is needed to trigger deployment. This paper experimentally demonstrates how a Macro Fiber Composite (MFC) actuator can statically and dynamically excite a stowed composite tape spring to initiate unrolling into its extended state.

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Section: Manufacturing Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%