Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Flight Control Law and the Dynamic Characteristic about Variation of Feedback Gains of T-50 Lateral-Directional Axis

T-50 가로-방향축 비행제어법칙 설계 및 궤환이득의 변화에 따른 항공기 동특성에 관한 연구

  • Published : 2006.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The T-50 advanced trainer aircraft combines advanced aerodynamic features and a fly-by-wire flight control system in order to produce a stability and highly maneuverability. The flight control system both longitudinal and lateral-directional axes to achieve performance enhancements and improve stability. The T-50 employs the RSS concept in order to improve the aerodynamic performance in longitudinal axis and the longitudinal control laws employ the dynamic inversion with proportional-plus-integral control method. And, lateral-directional control laws employ the blended roll system both beta-betadot feedback and simple roll rate feedback with proportional control method in order to guarantee aircraft stability. This paper details the design process of developing lateral-directional control laws, utilizing the requirement of MIL-F-8785C and MIL-F-9490D. And, this paper propose the analysis of aircraft characteristics such as dutch-roll mode, roll mode, spiral mode, gain and phase margin about gains for lateral-directional inner loop feedback.

Keywords

References

  1. T. P. Neal and R E. Smith, 'An inflight investigation to develop system design criteria for fighter airplanes,' Air Force Flight Dynamics laboratory, WPAFB, Ohio, AFFDL TR-70-74, 1970
  2. G. E. Cooper and R. P. Harper, 'The use of pilot rating in the evaluation of ail craft handling qualities,' NASA TN-D 5153, 1969
  3. M. R. Anderson and D. T. Schmidt, 'Closed-loop pilot vehicle analysis of the approach and landing task,' Journal of Guidance and Control, vol. 10, no. 2, pp. 187-194, 1987 https://doi.org/10.2514/3.20201
  4. D. T. McRuer and D. T. Schmidt, 'Pilot-vehicle analysis of multi-axis tasks,' Jounal of Guidance and Control, vol. 13, no. 2, pp. 348-355, 1990 https://doi.org/10.2514/3.20556
  5. 'Military specification-flying qualities of piloted aircraft,' MlL-F-8785, Nov. 1980
  6. 'Military standard-flying qualities MlL-STD-1797A, Jan, 1990
  7. R. D. Toles, 'Flying qualities design guide for the T-50 aircraft revision 2,' Aeronautics Company-Fort Worth vol. 1, no. 2, pp. 27-80, 2000
  8. C. S. Kim, M. H. Bae, and B. M. Hwang, 'A study on improvement of aircraft handling quality for asymmetric loading configuration,' Journal of The Korean Society for Aeronautical and Space Science, vol. 33, no. 2, pp. 106-112, 2005 https://doi.org/10.5139/JKSAS.2005.33.2.106
  9. J. Roskam, 'Airplane flight dynamic and automatic flight controls,' Roskam Aviation and Engineering Corporation, Rev. no. 1, 1979
  10. W. D. Zwememan, 'T-50 flight control law functional block diagrams,' Lockheed Martin
  11. Y. S. Kang, 'FBW 비행제어 시스템의 제어법칙 설계,' Korea Aerospace Industries, LTD