RECESS FILLING SLAT FOR AIRPLANE WING, HIGH-LIFT SYSTEM, AND NOISE REDUCTION METHOD

摘要

The present invention provides a recess filling slat for an airplane wing, comprising: a deployable leading edge slat; and at least one recess filling element, movable between an internal folding position of the deployable leading edge slat and an external deploying position of the deployable leading edge slat, the at least one recess filling element being built to move from the folding position to the deploying position during deployment of the deployable leading edge slat, so as to form the recess filling slat together with the leading edge slat. The present invention further provides a low-noise high-lift system for an airplane wing and a method for reducing airplane noise related to a high-lift system. While ensuring a requirement for pneumatic performance of a high-lift system in a low speed state and saving precious space at a leading edge of a fixed wing, the present invention deploys a recess filling element to mitigate or shield a major sound source area of a leading edge slat.