飞行器动导数高速风洞试验方法标准化研究

Research on Standardization of the Test Method on Dynamic Stability of Aircraft in High Speed Wind Tunnel

飞行器动导数是其机动或受扰动飞行状态下是否具有动稳定性的一个重要判据,关系飞行安全与技战术指标的实现。高速风洞动导数试验是获取飞行器动导数的最主要的技术手段,但其系统复杂,涉及气动、机械、控制以及测量和处理等多个专业,试验预测结果的不确定因素较多。开展动导数风洞试验方法的标准化研究对于提高试验系统的精准度、可靠性具有重要的意义。本文总结了国内外高速风洞动导数试验近40年的工作经验,基于现阶段最先进技术,研究并给出了试验系统、验证标模、数据处理方法等的规范和要求,对部分重要指标进行了风洞试验验证。该标准的研究与制定将为国内外空气动力试验研究机构提供重要的行业标准与参考依据。

The dynamic derivative of aircraft is an important criterion for its dynamic stability in maneuvering or disturbed flight state,which is related to flight safety and the realization of technical and tactical indexes.The dynamic derivative test in high-speed wind tunnel is the most important technical means to obtain the dynamic derivative of aircraft at present,but its system is complex,involving many disciplines such as aerodynamics,machinery,control,measurement and processing,and the uncertainty of test prediction results is large.The standardization of dynamic derivative wind tunnel test method is of great significance to improve the accuracy and reliability of the test system.In this paper,the working experience of dynamic derivative test in high-speed wind tunnel at home and abroad for nearly 40 years is summarized.Based on the most advanced technology developed at this stage,the specifications and requirements of test system,verification standard model and data processing method are studied and given,and some important indexes are verified by wind tunnel test.The research and formulation of this standard will provide important industry standards and reference basis for aerodynamic test and research institutions at home and abroad.