This paper presents the principle of relaxing static stability(RSS) on aircraft firstly,and then calculates the flight performance and structure weight profits from RSS on a given transport airplane.

• 分析了放宽静稳定性改善飞机性能的基本原理,并结合具体算例给出了民用飞机飞行性能的改善结果和所获得的结构质量收益。