Asymmetric air bearing for built-in pitching mechanism

Abstract

The invention provides an asymmetric air bearing for a built-in pitching mechanism, and belongs to the technical field of bearings. The bearing system comprises an air bearing and a supporting rod, wherein the air bearing comprises a bearing shell, a bearing bush, a bearing stator, an upper end cover and a lower end cover, the bearing bush is in interference fit with the bearing stator, the bearing shell is arranged outside the air bearing, the upper end cover and the lower end cover are fixedly installed at the two ends of the bearing shell through bolts correspondingly, and the supporting rod is connected to the air bearing. The air bearing is of an asymmetric air bearing structure, and asymmetry of the air bearing is reflected in the aspects of asymmetric structure in the circumferential direction, uneven distribution of shallow cavities, unequal sizes, unequal depths, unequal diameters of throttling holes and the like, a radial air return hole and a fan-shaped groove with a certain opening angle are formed in the middle position of the air bearing in the direction of the supporting rod, and the static balance position of the asymmetric air bearing is adjusted by changing the size of the fan-shaped groove. Compared with an existing device, the air bearing has the advantages of being low in damping and large in dynamic bearing capacity.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to an asymmetric air bearing for a built-in pitch mechanism. Background technique [0002] In the initial stage of aircraft development, in order to reduce the risk and cost of aircraft development, it is necessary to conduct wind tunnel simulation tests on the aircraft to explore the aerodynamic performance of the aircraft. Since the beginning of the 21st century, the increasingly refined design and development requirements of aircraft have put forward higher requirements for the precision and test capabilities of the existing wind tunnel simulation. The traditional wind tunnel model technology suffers from many aspects such as excessive resistance and insufficient accuracy. Can not meet the development needs of modern aerospace, military aircraft field. Facing the challenge of accelerating the pace of development of various high-performance aircraft, it is urgent to improve the ...

AI Technical Summary

Problems solved by technology

At present, the research on asymmetric air bearing structure based on the built-in pitching mechanism is very rare at home and abroad, and most of the research is only in the research and development stage.

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