Technology research on deflectorjet brake pressure servo-valve

Aiming at the existing problems of two kinds of pressure servo valves, that is, nozzle baffle and jet pipe, commonly used in aircraft brake system at present, a new type of partial deflector jet pressure servo valve is proposed in this paper. After analyzed and researched the working principle of this partial deflector jet pressure servo valve, key components like torque motor, partial deflector jet amplifier and power-level slide valve, flow pressure gain coefficient for partial deflector jet is derived, mathematical model for torque motor is established and static and dynamic kinetic model is also established for partial deflector jet pressure servo valve. Therefore, a comparatively perfect theory system is formed for partial deflector jet pressure servo valve, which filled the gaps in partial deflector jet pressure servo valve of brake system in the research field in China, meanwhile, it offered guiding significance for the research and development of the same type of brake pressure servo valve, which laid a foundation for serializing the brake pressure servo valve