Search academic texts

Information × Registration Number 0205U004275, 0103U006627 , R & D reports Title Shape control of thin mirror of the space telescope under the conditions of the tangential deformations uncertainty popup.stage_title Head Maksymyuk Lyubov Volodymyrivna, Registration Date 15-03-2005 Organization Space Research Institute popup.description2 The method of geometry control of an axisymmetric deformed thin mirror of a space telescope on the basis of an inverse problem solution of the thin shell theory is proposed. The Statement of the nonlinear inverse problem is given and uniqueness of its solution is shown. Is shown that in case of distortion of a thin mirror by gravitation forces the neglect of geometric nonlinearity leads to an overbalance of displacements on the magnitude essential in optics. A clamped structure to be a ring is considered as a thin elastic bar of a rectangular cross section. It is shown that a ring stiffness influences essentially on the mirror flexibility. An algorithm for a ring parameters identification on the base of measurements of mirror deflections under the own weight was suggested. Parameters to be identify and their number depending on the mirror thickness were determined. The accuracy of the suggested algorithm was shown. Product Description popup.authors popup.nrat_date 2020-04-02 Close