摘要
飞机动力学模型精确度的高低直接决定了飞行性能的可信性,飞机动力学模型的逼真程度很关键。由于在模型建立及解算过程中采取的种种近似和简化,导致最终建立的动力学模型和飞机实际动力学特性存在一定误差。具体分析了建模过程中的主要误差来源。为解决上述问题,给出了一种弥补上述误差的方法。针对飞机的主要性能指标,通过对影响性能指标的可调整参数进行适当的调整,有效缩小了动力学模型和实际之间的误差,提高了动力学模型和实际飞机动力学特性之间的吻合程度。
The accuracy of dynamic model has a decisive influence on fidelity of dynamic characteristics of aircrait in flight simulation. As the approximation and simplification in modeling and compute, there are certain inconformity between dynamic model and performance of aircraft in real flight. The sources of errors wre analysed and a method of revising these errors was given. Aimed at the main performance indexes of aircraft,the errors were reduced obviously by adjusting these parameters which have effect on the indexes appropriately. Therefore, the consistency between dy- namic model and real flight performance is improved.
出处
《计算机仿真》
CSCD
北大核心
2013年第3期101-104,246,共5页
Computer Simulation
基金
辽宁省自然科学基金计划(2010276)
关键词
飞行仿真
动力学模型
参数调整
飞机性能指标
Flight simulation
Dynamic model
Parameter adjustment
Performance index of aircraft
