初步设计阶段倾转旋翼机短距起飞性能设计方法研究

倾转旋翼机兼具垂直起降和高速巡航能力,已在诸多领域得到广泛应用。研究倾转旋翼机特有的短距起飞方式下的起飞性能设计计算方法,对飞机研制项目的成功具有重要意义。提出一套适用于初步设计阶段短距起飞方式下的起飞性能设计方法,该方法包括短舱最小倾斜角的确定、起飞离地速度和起飞距离计算公式的推导;同时将该方法用于倾转旋翼机的初步设计,并分析机场海拔高度和不同天气条件对起飞性能的影响。结果表明:该方法计算结果合理,符合起飞规律,具有良好的工程应用价值。

Research on short take-off performanceof tilt-rotor aircrafts during preliminary design stage

A series of approaches have been developed to identify the short take-off performance of tilt-rotor aircrafts which tilt their nacelles to implement short take-off. The approaches include how to confirm the minimum tilt angle of the nacelles, and the formulas suitable to calculate lift-off speed and take-off length are also developed. These methods are adopted in the design of a certain tilt-rotor aircraft during the preliminary design stage, moreover, the effects of airport altitude and weather conditions on short take-off performance are also researched. The results are reasonable, which indicates that these approaches are useful and of great value in practice.