FORECASTING THE SERVICEABILITY OF THE RUBBER CORRUGATED SLEEVE OF THE DOCKING NODES OF THE LAUNCH VEHICLE'S THERMOSTATIC CONTROL SYSTEM

Abstract

One of features of objects of spacerocket technique there is the reliable providing of capacity of the different systems, aggregates, mechanisms on the draught of great while of storage and exploitations for making of elements of that various materials are used. A rubber corrugated sleeve of a three-unit design with three structural elements, each of which is in different stress-deformed states, is used for the connecting nodes of the thermostatic control system. Since rubber as a structural material, having a number of advantages (low density, high elasticity and flexibility, low hardness, competitive price, etc.) compared to metal structural materials, over time quickly loses its technical characteristics, it was of interest to investigate the possibility of ensuring the operability of a rubber corrugated sleeve as a part of the connecting nodes of the thermostatic control system during the warranty period of storage and operation. The reason for this is the aging of rubber over time under the influence of many different factors activated by mechanical stress. Due to the fact that rubber is subject to the principle of temperature-time superposition, predicting the service life of the rubber corrugated sleeve was carried out using the method of accelerated climatic tests at elevated temperature. The testing modes were established according to the total curves for the unknown part of the sleeve, as it is found in the largest stress-strained steel. Pobudov's summation crookedness was based on Arrhenius' victories. The methodology was given to stimulate the sum curve. Testing at a special stand confirmed the conservation of the robotic capacity of the humic sleeve and the jointing on the length of the 15-point operational term with a margin coefficient of 1.5