HIGH-ORDER STATE-SPACE SIMULATION-MODELS OF HELICOPTER FLIGHT MECHANICS

被引：24

作者：

KIM, FD

CELI, R

TISCHLER, MB

机构：

[1] UNIV MARYLAND,DEPT AEROSP ENGN,CTR ROTORCRAFT EDUC & RES,COLL PK,MD 20742

[2] USA,AEROFLIGHTDYNAM DIRECTORATE,AMES RES CTR,MOFFETT FIELD,CA

来源：

JOURNAL OF THE AMERICAN HELICOPTER SOCIETY | 1993年 / 38卷 / 04期

关键词：

D O I：

10.4050/JAHS.38.16

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This paper describes the formulation and validation of a high-order linearized mathematical model of helicopter flight mechanics, which includes rotor flap and lag degrees of freedom as well as inflow dynamics. The model is extracted numerically from an existing nonlinear, blade element, real-time simulation model. Extensive modifications in the formulation and solution process of the nonlinear model, required for a theoretically rigorous linearization, are described in detail. The validation results show that the linearized model successfully captures the coupled rotor-fuselage dynamics in the frequency band most critical for the design of advanced flight control systems. Additional results quantify the extent to which the order of the model can be reduced without loss of fidelity.

引用

页码：16 / 27

页数：12