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飞/发一体化设计是从整个飞机系统出发进行机体、发动机的研究设计。其中,约束分析是一体化设计的首要任务,其目的是确定飞机满足技术要求的可行域,并从中选出初步设计的推重比和机翼载荷。本文介绍了一般飞机气动特性计算模型和约束分析的模型,并以某民用飞机为例,进行了推重比和翼载的约束分析。根据相关数据,发现其真实值落在可行域中,可对飞机的性能有初步的认识。
Fly / hair integrated design is starting from the entire aircraft system, engine research and design. Among them, the constraint analysis is the primary task of integrated design, the purpose is to determine the feasibility of the aircraft to meet the technical requirements of the domain, and select the initial design of the thrust-weight ratio and wing load. This paper introduces the calculation model of aerodynamic characteristics of general aircraft and the model of constraint analysis. Taking a civil aircraft as an example, constrained analysis of thrust-to-weight ratio and wing load are carried out. According to the relevant data, it is found that its true value falls within the feasible region, and the initial understanding of the performance of the aircraft can be obtained.