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Influence of the Outlet Aperture of Sensitive Chamber on the Stability of Fluidic Gyroscope

In this paper, influence of the outlet aperture of sensitive chamber on the stability of fluidic gyroscope has been studied. Using ANSYS-FLOTRAN CFD software, the finite element simulation was conducted by a series of procedures, such as two-dimensional model building of fluidic gyro, meshing, loads applying and equation solving, we calculated the airflow distribution in sensitive chamber of fluidic gyro with different outlet apertures. The results show that the airflow would decay and diffuse after it injects into the chamber through nozzle, the bigger the outlet aperture, the smaller the pressure in the outlet-side and the airflow velocity discharged from the outlet, and the more seriously the airflow decay and spread. An effective way to improve the stability and structural optimization of the fluidic gyro output has been studied in this paper.