Aircraft airfoil trailing edge cabin drainage design method

Abstract

The invention discloses an aircraft airfoil trailing edge cabin drainage design method. The method is characterized in that a CAE software is used for respectively creating an aircraft airfoil trailing edge cabin spanwise section view and a chordwise section view; according to the principle that water flows from a high position to a ground position, a water flow direction and a final convergence position are obtained; whether a drainage channel is blocked or not is judged by combining the arrangement of a suspension support arm, an operation support and a rear edge partition plate in the airfoil rear edge cabin; finally, the arrangement position of the aircraft airfoil trailing edge cabin drain hole is determined, so that, it is guaranteed that the rainwater and the condensate water in theairfoil trailing edge cabin have the good drainage channels and can be drained out of the airfoil trailing edge cabin in time, the situations that due to influences of water and water vapor, corrosion occurs, and the performance indexes and the service lives of the structural parts are reduced are avoided, so that larger potential safety hazards and flight safety dangers are caused, are avoided.

Description

technical field [0001] The invention belongs to the field of aircraft structure design, and relates to a drainage design method for an airfoil trailing edge cabin. Background technique [0002] In the existing technology, most of the trailing edge compartments on the wing surface of the aircraft do not have drain holes, but the trailing edge compartment and the control surface are sealed by rubber profiles, so it is difficult to prevent external water vapor from entering the interior of the trailing edge compartment, and the water vapor in the trailing edge compartment It will also liquefy into water droplets due to temperature changes, flow in the trailing edge tank and gather in low-lying places. Water can delaminate the composite material structural parts and reduce the mechanical properties of the composite material structural parts themselves, and can also cause the metal material structural parts to generate electricity. Rust or cracks may occur due to chemical corrosi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a design method for the drainage of the trailing edge compartment of the aircraft wing, which is used to improve the structural parts inside the trailing edge compartment, and the problems such as chemical corrosion, performance index and service life reduction of the structure caused by water and water vapor

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