Application of Organic Sealants to Preventing Water-seepage on Rudders and Wings with Hollow Construction

摘要

Exposure in outdoor environment, a small rudder or wing with hollow construction may absorb rain water, moisture, and salt fog resulting in higher weight, barycenter departure, poor maneuverability, and stress by repeating icing and evaporating. It also cause corrosion and other failures. Countermeasures to prevent water seepage were studied. Sealing with sealants or in situ foaming is simple and effective engineer measure. This article narrated water seepage prevention studies with sealants and foams, material selection, surface treatment, and structure improvements to achieve better adhesion, heat resistance, environment suitability, aging resistance.