Deep stall characterization and identification algorithm on a T-tail aircraft modelReportar como inadecuado




Deep stall characterization and identification algorithm on a T-tail aircraft model - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 CReA - Centre de Recherche de l-Armée de l-air 2 LIMSI - Laboratoire d-Informatique pour la Mécanique et les Sciences de l-Ingénieur 3 M&S - Matériaux et Structures LMA - Laboratoire de Mécanique et d-Acoustique Marseille

Abstract : Deep stall is a kind of stall affecting aircraft longitudinal dynamics in which the pitch up-down command is almost ineffective. The flight of the tail inside the separated wake of the stalled main wing could be considered as an explanation for the phenomenon. It implies a stable equilibrium at high angle of attack. The analysis is first performed from the observation that the different possible types of time evolutions in the  alpha, q phase portrait are only in limited number. Then the damping of the short period mode near deep stall is noted to be smaller than the one at low angle-of-attack. At the end, the analysis of the dynamics proves to allow the identification of critical deep stall prone flight conditions without any a priori information on the aircraft.





Autor: Laurent Hetru - Thierry M. Faure - Sebastien Kolb - Olivier Montagnier -

Fuente: https://hal.archives-ouvertes.fr/



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