An asymmetrical air bearing for a built-in pitching mechanism

Abstract

The invention provides an asymmetric air bearing for a built-in pitch mechanism, which belongs to the technical field of bearings. The bearing system includes an air bearing and a strut. The air bearing includes a bearing shell, a bearing bush, a bearing stator, an upper end cover and a lower end cover. The bearing bush and the bearing stator have an interference fit. They are respectively fixed and installed on both ends of the bearing shell by bolts; the struts are connected with the air bearing. The air bearing adopts the structure of asymmetric air bearing, and its asymmetry is reflected in the asymmetric structure in the circumferential direction, uneven distribution of shallow cavities, unequal size, unequal depth and unequal diameter of orifice; Radial air return holes and fan-shaped slots with a certain opening angle are set at the middle position of the bearing along the direction of the pole, and the static balance position of the asymmetric air bearing can be adjusted by changing the size of the fan-shaped slots. Compared with the existing devices, the device has the advantages of low damping and large 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 pitching mechanism. Background technique [0002] In the early stage of aircraft development, in order to reduce the risk and cost of developing aircraft, 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 needs 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 has many aspects such as excessive resistance and insufficient accuracy. It can no longer meet the development needs of modern aerospace and military aircraft. Faced with the challenge of accelerating the development of various high-performance aircraft, it is urgent to improve the traditional wi...

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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