The stabilization of a rigid structure subjected to deformations thermoelastic.

摘要

A system making it possible to stabilize a rigid structure (1) screw - to - screw deformations thermoelastic comprises a network of stiffeners (2) connected to a rear face (s2) of the rigid structure, and an emissive structure (10) arranged in the screw - to - respect to said rear face (s2). The system further comprises a set of radiative insulation (3) disposed between the stiffeners (2) and the emissive structure (10), without the mask of the portions (p2) of the rear face of the rigid structure with respect to the emissive structure. The temperature gradients that are present in the stiffeners and oriented perpendicularly to the rear surface of the rigid structure are then reduced, and the deformations thermoelastic of said rigid structure are reduced as a consequence. The rigid structure can be a primary mirror of the telescope capable of receiving a variable flow of heat.