航空学报 > 2025, Vol. 46 Issue (20): 531885-531885   doi: 10.7527/S1000-6893.2025.31885

超声速飞机缩比模型飞行控制律参数相似设计准则

台尚1, 王立新1, 胡延国1,2, 吴昊泽1, 黄开2, 刘海良1, 乐挺1()   

  1. 1.北京航空航天大学 航空科学与工程学院,北京 100191
    2.航空工业沈阳飞机设计研究所,沈阳 110035
  • 收稿日期:2025-02-24 修回日期:2025-03-18 接受日期:2025-04-01 出版日期:2025-04-08 发布日期:2025-04-07
  • 通讯作者: 乐挺 E-mail:yueting_buaa@126.com
  • 基金资助:
    航空科学基金(20240049051001)

Similarity criterion of flight control law parameters for scaled-model of supersonic aircraft

Shang TAI1, Lixin WANG1, Yanguo HU1,2, Haoze WU1, Kai HUANG2, Hailiang LIU1, Ting YUE1()   

  1. 1.School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China
    2.AVIC Shenyang Aircraft Design and Research Institute,Shenyang 110035,China
  • Received:2025-02-24 Revised:2025-03-18 Accepted:2025-04-01 Online:2025-04-08 Published:2025-04-07
  • Contact: Ting YUE E-mail:yueting_buaa@126.com
  • Supported by:
    Aeronautical Science Foundation of China(20240049051001)

摘要:

在飞机的方案设计阶段,往往通过缩比验证机的试飞近似模拟全尺寸飞机的运动,进而验证方案设计的合理性。目前仅有低速飞行时的缩比模型相似设计研究,尚未开展超声速飞机的总体参数以及飞行控制律参数相似设计研究。为了开展带线性飞行控制律的高增益超声速飞机缩比模型飞行试验,需要系统地研究缩比模型与全尺寸飞机总体参数以及飞行控制律参数的相似关系。首先,基于重模型法推导了超声速缩比模型的本体参数以及运动参数的相似准则。其次,分析推导了适用于所有飞行控制律构型和反馈信号的普适性的相似关系。按照控制原理的差异,将飞行控制律参数划分为反馈增益和串联动态环节2类。针对这2类参数,基于相似系统理论,推导得到了普适性的相似关系。最后,以某超声速飞机及其缩比模型为算例,完成了带控制律闭环系统的数学仿真计算。仿真结果表明,带控制律的全尺寸飞机和缩比模型的仿真结果满足运动相似关系,证明了研究结论的正确性。

关键词: 超声速飞机, 相似准则, 缩比模型, 飞行控制律, 飞行仿真

Abstract:

During the conceptual design phase of an aircraft, flight tests of scaled-model are often used to approximate the motion of full-size aircraft and validate the rationality of the design. Only similar design criteria have been investigated for scaled-model in the low-speed flight phase, however, no research has been carried out on similar design of overall parameters and flight control law parameters for supersonic aircraft. To conduct the flight test of high-gain supersonic aircraft with linear flight control law, it is necessary to systematically investigate the similarity of the overall parameters and flight control law parameters between the scaled-model and the full-size aircraft. First, the similarity criterions for the ontological parameters and the kinematic parameters of the scaled-model are derived based on the heavy model method. Second, the general similarity relationships applicable to all flight control law configurations and feedback signals are analyzed and derived. According to the differences in control principles, the flight control law parameters are categorized into two types: feedback gains and series dynamic links. For these two types of parameters, similar relations with generalization are derived based on similar system theory. Finally, the mathematical simulation of a closed-loop system with a control law is completed using a supersonic aircraft and its scaled- model as an example. The results show that the simulation results of the full-size aircraft and scaled-model with flight control laws satisfy the motion similarity relationship, validating the correctness of the research conclusions in this paper.

Key words: supersonic aircraft, similarity criterion, scaled-model, flight control law, flight simulation

中图分类号: