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Analysis of the influence of the aircraft kinematic parameters on the throttle characteristic of a supersonic intake device

The article analyzes influence of the aircraft kinematic parameters on the throttle characteristic of the air intake device. Numerical mathematical modeling of the intra-channel flow of a supersonic air intake device is performed with different kinematic parameters. The solid-state model is built in the CAD-NX Unigraphics package, the simulation is carried out in the CAE-package STAR-CCM+. The throttle characteristics obtained by numerical calculation and engineering method are compared to characteristics obtained by experimental blowing in the TSAGI wind tunnel. According to the results of numerical simulation of intra-channel flow in a supersonic air intake device, it is found, for example, that an increase in the speed of aircraft movement leads to a displacement of the throttle characteristic compared with the base curve; at positive angles of attack, the efficiency of the air intake device increases due to an increase in engine thrust.