气体静压轴承广泛应用于航空、航天、精密电子工业中。三轴转台是高精度的测试设备，用来对惯性系统和惯性元件进行检定、标定以及建立相应的误差模型，它的测试精度直接影响航空、航天等飞行器的控制和导航。转台的检测精度与回转轴的回转精度有密切关系。多孔质气体静压轴承同其他节流形式的轴承相比具有很高的承载能力、静态刚度以及很好的阻尼效应。文章对多孔质气体静压轴承进行了理论分析，并同气体静压小孔节流轴承的静态性能进行了比较，结果表明，此类轴承的承载能力明显优于小孔节流轴承。

Aerostatic bearings have been applied widely in aviation, aerospace and precision electronics. Three-axis table is the equipment that has high precision and is used to check, demarcate and establish the error model of inertial system and work-piece. The measurement accuracy is related to the control and navigation in aviation and aerospace school. The equipment’s accuracy has influence on the revolution accuracy. Porous aerostatic bearings have higher load capacity, static stiffness and highed damping than other restricted bearings. The paper presents theoretical analysis of porous aerostatic bearings and compares them with orifice aerostatic bearings. The results show the load capacity of porous aerostatic bearings is higher than orifice aerostatic bearings.