مما تصنع الطائرات ؟

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مما تصنع الطائرات ؟

لاحظ المهندسون بأن الألومنيوم فلز لين وضعيف ، فهو لهذا لا ينفع للطائرات ، لكنه إذا سبك مع فلزات أخرى كالنحاس يصبح صلدا ومتينا كالفولاذ . ولهذا تستخدم هذه السبائك في بناء الطائرات لأنها تجمع بين المتانة والخفة .

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