某型轰炸机座椅振动舒适性分析

Comfort Characteristic of Bombardment Aircraft Seat

基于ISO2631及GJB966-90标准评价舒适度方法,建立了飞机-座椅-人体振动舒适度模型,用于飞机座椅舒适度评价。在此基础上,对比了飞机地面滑行阶段与空中飞行阶段振动能量分布频率段,分析了空中飞行阶段低频振动来源。利用信号仿真,通过改进伞包刚度和阻尼系数,大幅减少传递给人体的高频振动和相应低频振动能量。飞行实测数据计算结果表明,该轰炸机飞行员驾驶舒适性有待进一步提高。

Abstract According to the ISO2631 standard and GJB966-90 standard,Plane-seat-human vibration model is established to evaluate seat comfort characteristic.By analyzing the test data of some bombing plane,vibrations coming from the ground through the undercarriages before the airplane takes off are different from that after the airplane takes off,additional gust and maneuvering quality can bring low frequent vibrations by changing airplane attitude: flight height and pitch angle,etc.The bombing plane comfort characteristic should be improved.