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一、概述在三叉戟飞机修理中,为增加疲劳寿命,需在机翼8号肋下翼面处前后梁间加装5块铝合金变厚度加强板。这些加强板要求与机翼下翼面贴合。8号肋处,外形复杂,故5块加强板均为双曲面,有上翻弯折马鞍型,又有下翻弯折马鞍型,也有球面型等。五种不同的双曲型面加强板,没有模线,只有飞机实物。经分析,此加强板在钣金车间无法加工,即拉型和
I. Overview Trident aircraft repair, in order to increase the fatigue life, the need to wing 8 rib wing wing before and after the installation of 5 aluminum alloy thickening reinforcement board. These stiffeners are required to conform to the lower wing surface of the wing. Rib No. 8, the shape is complex, so the five are hyperboloid stiffeners, turn upside down saddle type, there are fold down saddle type, there are spherical type and so on. Five different hyperboloid surface stiffeners, no mold lines, only the aircraft in-kind. After analysis, this strengthening plate can not be processed in the sheet metal shop, that pull-type and