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在单桨式直升机总体设计阶段,除总体参数外,还需决定尾桨参数。本文介绍采用计算机优化技术进行直升机尾桨参数优化选择的方法。文中采用“罚函数法”将直升机尾浆参数设计这类多元有约束的非线性规划问题,处理为无约束非线性规划。用“随机投点法”、“随机方向法”等优化方法进行求解,求出满足尾桨设计要求的“最佳参数”。程序可在单桨带传统尾浆的直升机初步设计时,进行尾浆参数的选择。
In the overall design stage of a single-rotor helicopter, in addition to the overall parameters, tail rotor parameters need to be determined. This article describes the use of computer optimization technology for helicopter tail rotor parameter optimization options. In this paper, the “Penalty Function Method” is used to deal with the nonlinear programming problem with multiple constraints, such as helicopter tail pulp parameter design, as an unconstrained nonlinear programming. The optimal parameters such as “random throwing method” and “stochastic direction method” are used to solve the problem and the “best parameters” to meet the design requirements of tail rotor are obtained. The program allows for the selection of the tailing parameters at the initial design of a helicopter with a conventional tailbath.