Guiding system for aircraft nacelle maintenance

Details Guiding system for aircraft nacelle maintenance Guiding system for aircraft nacelle maintenance

B - Operations, Transporting

64

D

B64D 29/08 (2006.01) B64D 29/06 (2006.01)

Patent

CA 2708288

The invention relates to a nacelle (100) for the turbojet of an aircraft that comprises a downstream structure including: an outer structure (106), a concentric inner structure (109) surrounding a downstream portion (111) of the turbojet and including an upstream section having a relatively small diameter (113) and a downstream section having a relatively large diameter (114), wherein said inner structure (109) defines together with the outer structure (106) an annular flow channel (108); and a guiding system (140) for connecting the inner structure (109) and the downstream portion (111) of the turbojet engine or a portion of a suspension mast; characterised in that the guiding system (140) includes a means for combining a translation and rotation movement of at least a portion of said inner structure (109) between a working position, in which the inner structure (109) is used as a cowling for the turbojet downstream portion (111), and a maintenance position in which the inner structure (109) exposes said turbojet downstream portion (111), thus enabling the movement of said portion if the inner structure (109) along the profile of the upstream section having a relatively small diameter (113), and then of the downstream section having a relatively large diameter (114).

L'invention concerne une nacelle (100) pour turboréacteur d'un aéronef, comportant une structure aval comprenant : une structure externe (106), une structure interne (109) concentrique destinée à entourer une partie aval (111) du turboréacteur et comprenant une section amont de diamètre relativement petit (113) et une section aval de diamètre relativement grand (114), ladite structure interne (109) définissant avec la structure externe (106) un canal annulaire d'écoulement (108), et - un système de guidage (140) destiné à relier la structure interne (109) et la partie aval (111) du turboréacteur ou une partie d'un mât de suspension, caractérisée en ce que le système de guidage (140) comprend des moyens pour combiner un mouvement de translation et de rotation d'au moins une partie de ladite structure interne (109) entre une position de travail dans laquelle la structure interne (109) fait office de carénage de la partie aval (111) du turboréacteur et une position de maintenance dans laquelle la structure interne (109) découvre ladite partie aval (111) du turboréacteur, permettant le déplacement de ladite partie de la structure interne (109) suivant le profil de la section amont de diamètre relativement petit (113) puis de la section aval de diamètre relativement grand (114).

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