Control of spacecraft waveguide dynamic behavior by means of support arrangement

Abstract

The most important parameters that determine the dynamic behavior of the waveguide in orbit are the first natural vibration frequency and the critical compressive force at which the stability of the waveguide structure is lost. This paper deals with the selection of the type and location of the outermost and intermediate supports for a single waveguide between two microwave units to provide the required values of the first natural vibration frequency and critical compressive force. The most common support arrangement schemes and their corresponding coefficients for equations defining the first natural frequency and minimum critical compressive force are given. For the calculation, the analytical dependencies of beam vibration theory and stability theory are used, which allowed to obtain simple equations and to comprehensively assess the influence of various factors on the obtained results. The results can be used in the design of any extended structures to ensure their dynamic behavior by means of support arrangement.