CALCULATION OF GAS-DYNAMICS PARAMETERS AND STRESS-STRAIN STATE OF CELSIAN CERAMICS PRODUCTS

In the work using finite element method, an analysis of behavior nose fairings made radio-transparent ceramic materials celsian composition was carried out. Determination parameters gas dynamics and stress-strain state out licensed ANSYS software. SSG Reynold Stress turbulence model chosen for accurate air flow simulation. Geometric models were used to calculate strength temperature fields. The results gas-dynamic calculations shows that at point transition conical part rocket into cylindrical part, there is a sharp change in conditions disruption range speeds 100-1100 m/s. As result modeling distribution fields with stated task, it established on inner surface fairing differs from outer by no more than ±1 °C average, maximum heating does not exceed 550 °C. According under regimes simulate their operation, concluded considered equivalent (≤ 69.3 MPa) main 40 stresses occurring are bending limit ceramics (290 MPa). It can be observed difference thickness corresponds minimum radius. Movements do 0.25 mm, which acceptable according specified parameters. parametric provides advantages justifying rational technical solutions. Ultimately, fairing, ceramics, will maintain its integrity real operating conditions. Keywords: radiotransparent ceramics; fairing; method; dynamics; thermophysical calculations; strength;