Thermal-Fluid-Solid Coupling Simulation and Oil Groove Structure Optimization of Wet Friction Clutch for High-Speed Helicopter

Wet friction clutch is the key functional component of high-speed helicopter variable-speed transmission system, which used to change power path. In engagement process wet clutch, driving/driven disc will produce drag torque under shearing lubricating oil, reduces efficiency. This unnecessary efficiency and increases temperature. The temperature increase promotes wear gears bearings aging deformation plates, leads local service life clutch. From principle oil groove structure directly related rise disc. It very important for long-distance flight helicopters obtain with low rise. order solve this problem, taking a as research object, based on radial annular compound groove, thermal-fluid-solid coupling simulation model established obtained flow characteristics field distribution in analyze influence law parameters field. improve disc, Taguchi experiment non-dominated neighborhood immune algorithm were optimize structural grooves. comparison results show that optimized can effectively reduce work provide theoretical reference design