Discussion on Structural Design of O-Ring Seal Used in Aviation 28MPa Hydraulic System

Abstract:

Most of China's newly developed fighters are equipped with 28MPa hydraulic system rather than previous 21MPa hydraulic system since introduction of Russian S27 fighter production line. However, there is no truly applicable design standard guiding the sealing design of 28MPa hydraulic products in aviation applications although 28MPa hydraulic system has been applied in China's fielded fighters for quite a long time. In this article, the sealing standards both abroad and home and the sealing materials used by world-famous seal manufacturers are respectively investigated. In addition, calculation methods and allowable limits are recommended for the tensile and compression rate used in design calculation for sealing structure. All these recommended values can be referenced by sealing design engineers before China's high pressure sealing design standards are implemented.

• Periodical: Applied Mechanics and Materials (Volume 779)
• Pages: 88-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.779.88
• Online since: July 2015
• Authors: Qing He Zhou*
• Keywords: Compression Rate, Fit Clearance, High Pressure Seal, Sealing Structure, Tensile Rate

References

[1] Flight Control and Hydraulic System Design, published by Aviation Industry Press.

[2] High Performance Rubber Seal Materials, published by Chemical Industry Press.

[3] Fluid Dynamic Seals, published by Press of University of China Petroleum.