摘要
空间惯性部件常采用充气转子结构,充气压力的大小将直接影响转子结构的气动阻力矩和传热特性,进而影响整个部件的功耗和散热条件。以典型的充气转子系统—一种液浮陀螺仪的陀螺马达为对象,测定了其在从真空到一个大气压条件范围内不同充气压力下工作时特定位置的温升。针对同样对象和条件,采用商用ANSYS-CFX软件进行了流-热耦合分析数值仿真。实测和仿真结果一致地显示出:温升随充气压力增大而减小,且与真空条件相比,充入1个大气压空气将使温升下降约6℃。
Gas-charged rotor structure was usually used in the inertial assembly.The magnitude of gas-charge pressure directly influence the windage and the heat transfer characteristic of the rotor system,further more it influence the power consumption and the heat rejection.In this paper,for a single degree freedom floated gyro motor,a typical gas-charged rotor system,the temperature rise at a given position were measured under different air-charge pressure within the range from vacuum to 1atm.To the same conditions...
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2007年第5期1167-1170,共4页
Journal of Astronautics
关键词
陀螺马达
温升
流-热耦合
充气压力
Gyro motor
Temperature rise
Flow-heat coupling
Gas-charged pressure
