Various features of the computer codes used in the helicopter industry and by government agencies for rotorcraft aeroelastic stability analysis are compared. Mathematical rigor in modeling rotorcraft is given primarily to the rotor-system dynamic behavior; the aerodynamic modeling is still limited to strip theory and to uneven application of corrections for stall, reversed flow, yawed flow, radial flow, and unsteady aerodynamic effects. The forward-flight regime analysis is included in five of the 11 codes surveyed. However, only two of these codes are capable of a Floquet analysis for aeroelastic stability. For the hover regime, nine of the 11 codes use eigen-analysis approach. The remaining codes perform a harmonic analysis of the transient response of system.
A comparison of the various helicopter mathematical models used in the methodology assessment
1988-06-01
Conference paper
No indication
English
Validation of helicopter mathematical models
Tema Archive | 1990
|Mathematical models of helicopter flight dynamics
AIAA | 2002
|Unsteady Aerodynamics of Helicopter Rotors: Mathematical Models
British Library Conference Proceedings | 1995
|Mathematical definition of helicopter maneuvers
Tema Archive | 1997
|NONLINEAR MATHEMATICAL MODEL OF HELICOPTER
British Library Conference Proceedings | 2002
|