34th Congress of the International Council of the Aeronautical Sciences

07 - Systems, Subsystems and Equipment

EXPLORING A CATEGORY OF LIMIT CYCLE OSCILLATIONS IN AIRCRAFT HYDRAULIC SYSTEMS

S. Yang¹, Y. Long, School of Energy and Power Engineering, Beihang University, China; Z. Hu¹; ¹Institute for Aero Engine, Tsinghua University, China

In the aircraft hydraulic system, a typical oscillation pattern has been discovered, referred to as a 3rd-order limit cycle. The cause of and criteria for its occurrence have been clarified and specified. This finding assists in recognizing potential limit cycles in hydraulic systems, reducing the chance of unwanted oscillations, and provides support for optimizing the design of hydraulic systems.


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