钛合金具有密度低、比强度高、抗腐蚀性能优异等一系列特点，是先进飞机制造中重要的结构材料。

The titanium alloy, as an important structure material during the manufacture of advanced aircraft, provided the light density, high specific intensity and excellent resistance to corrosion.

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在飞机结构寿命理论的基础上，结合小型无人机机体结构特点，建立了小型无人机机体寿命分析方法。

Bases on the aircraft structure fatigue life theory, consider the characteristics of small UAV, the model of fatigue life prediction for small UVA structure is established.

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本文介绍了目前主要干线飞机所采用的体系结构和有关大型民用客机体系结构的特点。

This paper describes the architecture adopted by current main trunk airliner as well as the features of large civil airliner architecture.

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