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Design of Test Methods for Deployable Composite Booms


Title: Design of Test Methods for Deployable Composite Booms

Authors: Will Montgomery, Ramy Harik, Peter Shpik

DOI: 10.33599/nasampe/c.23.0141

Abstract: Collapsible composites booms are growing in applications from solar collectors to space structures. Their small footprint and redeployability makes them optimal components for aerospace applications where weight and space are limited. To determine the effectiveness of a boom to meet its application requirements, its mechanical performance needs to be analyzed. To accomplish this a test frame was developed to load the boom in different directions. The main performance metrics that need to be determined are bending stiffness, both in-plane and out-of-plane, torsional rigidity, and column buckling due to bending. This paper addresses the design and construction for a test frame and the test methods to be used with it. The design is modular and reconfigurable for booms of different sizes with two bays on either side of the boom for the mounting of load application and measurement equipment. For the proposed test methods, a reeling motor and load cell are mounted on each side of the frame. Three test methods are defined for evaluating the boom performance metrics. For bending stiffness, the test method is used for both in-plane and out-of-plane loading from both sides of the boom. Several types of booms are made of two bonded components, so it is necessary to collect data from both sides. Torsion is applied using reeling motors on either side of the boom. This is done to twist the boom without an out of plane moment. Finally, column buckling is determined by unidirectional bending. With the development of performance tests and their corresponding load frame, a complete picture of the mechanical properties of a boom can be defined.

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Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000141

Pages: 13

Price: $26.00

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