DocumentCode :
3352903
Title :
Validation of a Ground Dynamics Model Formulation By use of Landing Data
Author :
Beaulieu, N.M. ; Botez, Ruxandra Mihaela ; Hiliuta, A. ; Popov, A.-V. ; Mureithi, N.
Author_Institution :
Lab. of Active Control, Avionics & Aeroservoelasticity, Ecole de Technol. Superieure, Montreal, Que.
Volume :
4
fYear :
2006
fDate :
9-13 July 2006
Firstpage :
2682
Lastpage :
2687
Abstract :
In this paper, a new formulation for a ground dynamics model for a commercial two engines helicopter is validated after touchdown. The inputs of the ground dynamics model are the velocities and angles at touchdown, while its outputs are the forces and moments produced by the ground on the helicopter. Expressions for forces and moments depending on the friction coefficient between the skids and the ground and the system stiffness and damping are presented. The system stiffness and damping are defined between the touchdown point and the center of mass in each of the helicopter degree of freedom. Expressions for the stiffness, damping and friction coefficients are derived to validate one engine inoperative and autorotation landing cases. The ground dynamics model is validated by use of landing flight test data collected on the B-427 helicopter and is further used in the building and in the certification of a level D simulator
Keywords :
aerospace engines; damping; friction; helicopters; vehicle dynamics; B-427 helicopter; autorotation landing cases; engine helicopter; friction coefficient; ground dynamics model formulation; landing data; system stiffness; touchdown point; Aerodynamics; Aerospace simulation; Damping; Engines; Equations; Friction; Gravity; Helicopters; History; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 2006 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0496-7
Electronic_ISBN :
1-4244-0497-5
Type :
conf
DOI :
10.1109/ISIE.2006.296036
Filename :
4078812
Link To Document :
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