19th AIAA Applied Aerodynamics Conference · 2001 · 24 citations · 3 references
EngineeringAerospace EngineeringPhysicsAerospace StructuresSpacecraft DesignStructural DynamicsObservatory OperationsSolar StructureSpacecraft StructuresStructural TestingDeployable BoomsDynamic Response TestingDynamic Structural AnalysisDynamic Structural DeformationSpacecraft Structural DynamicsSpacecraft Structural TestingStructural TestThin-film Membranes
The NGST sunshield is a lightweight, flexible structure consisting of multiple layers of pretensioned, thin-film membranes supported by deployable booms. The structural dynamic behavior of the sunshield must be well understood in order to predict its influence on observatory performance. Ground tests were carried out in a vacuum environment to characterize the structural dynamic behavior of a one-tenth scale model of the sunshield. Results from the tests will be used to validate analytical modeling techniques that can be used in conjunction with scaling laws to predict the performance of the full-sized structure. This paper summarizes the ground tests and presents representative results for the dynamic behavior of the sunshield.
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The nodal concept of deployment and the scale model testing of its application to a membrane antenna
Gyula Greschik, Martin M. Mikulas, R. E. Freeland · 40th Structures, Structural Dynamics, and Materials Conference and Exhibit · 1999 · 20 citations
Engineering, Electrical Engineering, Aerospace Structures +16