Increment Frictional Loading Analysis for High-Lift Devices with Seals

To ensure the aerodynamic performance of the slat in aircraft when retracted, it is necessary to set rubber seals in the seam between the leading-edge slat and the fixed leading edge. However, the extrusion and friction of the seal will induce the increment frictional loading on the slat driver. In the present Paper, a rigid–flexible body configuration model of the increment frictional loading was proposed based on multibody dynamics and theory of elasticity, and the increment frictional loading caused by the slat seal was calculated and analyzed. Besides, the influences of friction coefficient and temperature on the incremental frictional loading were investigated. The results will provide a guidance reference in simulation analysis and experimental verification methods for designing the slat seals in aircraft.