High-stability telescope structures

Statistics – Applications

Scientific paper

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Dimensional Stability, Spaceborne Telescopes, Structural Design, Carbon Fiber Reinforced Plastics, Grist (Telescope), Laminates, Large Space Structures, Lay-Up, Thermal Expansion

Scientific paper

A methodology for the design of structures requiring a high degree of dimensional stability, of the Space Telescope/GRIST type, was derived. The optimum structural configuration and the optimum laminate lay-up compatible with the structural strength and stiffness requirements were determined. The global behavior of the complete structure as a function of less-than-ideal component properties was established. Levels of maximum allowable deviations for real properties of components belonging to different families were determined. A method for adjustment of the coefficient of thermal expansion after manufacturing to compensate for unavoidable deviations in component properties was devised. A test method allowing measurement of very small distortions was developed.

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