大涵道比涡扇发动机风扇/ 增压级试验件结构 设计及验证

某大涵道比风扇/增压级试验件为1级风扇加3级增压级结构,为实现风扇/增压级部件特性录取,结构设计在满足气动设计要求的基础上,重点考虑了合理性和可靠性问题,采用理论结合工程经验的方法完成了转子支撑、静子连接和轴承润滑及密封等难点设计,兼顾大涵道比风扇/增压级结构及气动特点,采用宽弦风扇叶片设计、榫头/榫槽圆弧榫连及装配式风扇转子流路板结构。顺利完成试验件研制工作,经试验验证,压比、效率等性能参数达到或超过设计指标。

Structural Design and Verification of Fan / Booster Stage Test Pieces for Turbofan Engine with High Bypass Ratio

A high bypass ratio fan / booster stage test article is a stage 1 fan plus a stage 3 booster stage structure. In order to realize the characteristic acquisition of fan / booster stage components, the rationality and reliability of the structural design were considered on the basis of meeting the requirements of aerodynamic design. The difficult design of rotor support, stator connection, bearing lubrication and sealing was completed by combining theory with engineering experience. The wide string fan blade design, tenon / tenon slot arc tenon connection and assembled fan rotor flow path plate structure were adopted giving consideration to the structure and the aerodynamic characteristics of the fan/ booster stage of the high bypass ratio. The development of the test article was completed successfully. The performance parameters such as pressure ratio and efficiency reach or exceed the design index by test verification.