飞机新原理电液自馈能刹车系统设计与优化

At present, the traditional aircraft hydraulic brake system typically uses the centralized airborne hydraulic source as the power, which is transmitted to the brake actuator through the energy pipeline. With many parts and components and complex pipeline layout, the system has many problems, such as pipeline vibration and hydraulic oil leakage, limiting the improvement of reliability and maintainability of the system. In recent years, a new principle for aircraft electro-hydraulic self-powered braking system has been proposed. The modular "self-powered device" is installed near the wheel to recover the rotational kinetic energy of wheel landing and convert it into the hydraulic energy for braking. In this paper, a special mechanism using the wave curved surface for energy taking is proposed, which breaks through the stalemate with the design of a special energy taking mechanism for the self-powered system. A fully self-powered brake system principle prototype with the features of high reliability, low energy consumption, and anti-pollution is developed. Even if the aircraft loses all power, it can still effectively brake the plane. In addition, the anti-pollution level is upgraded from NAS6 to NAS10. The Integrated Self-powered Brake System (ISBS) is demonstrated to be better than the traditional hydraulic brake in terms of reliability and maintainability.