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中文摘要：
为确保结冰条件下的飞行安全并充分发挥飞机性能，提出了一种最优边界保护方法．以关键参数及其变化速率为控制对象，在分析最优边界保护下关键参数及其变化速率特性的基础上，选取调节量和调节时机作为调节参数，并构建这2个调节参数最优值之间的解析关系．针对机翼失速问题，给出动态飞行边界的确定方法，最终通过计算实现结冰条件下的最优边界保护．仿真结果表明，该方法行之有效，为结冰条件下的飞行安全研究拓展了新的思路．
英文摘要：
An optimal boundary protection method was proposed not only to ensure flight safety but also to maximize the performance of aircrafts. A critical parameter and its changing rate were defined as control objects. Based on the characteristic analysis of these two variables under optimal boundary protection, the adjusting amount and time were selected as two critical parameters to control the input signal. According- ly, an analytical relationship between the optimal values of adjusting amount and time was developed. In order to avoid incidents and accidents caused by wing stall, the stall angle limit was estimated to obtain the dynamic flight boundary. In addition, an optimal boundary protection for wing stall under icing conditions was implemented through simulation. The results demonstrate that the proposed method is valid and effective. Therefore, it can provide an important novel approach for flight safety guarantee under icing condi tions.
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