Patent ID: 9046041
Filing Date: 2015-06-02
Classification: B64D,F02C,F05D

Abstract:
1. A gearbox positioning device for positioning a gearbox, which is attached to a support linkage, on an engine case of a gas turbine engine having a central longitudinal axis, the positioning device comprising: a first part secured to the engine case, the first part having a connecting cavity circumscribed by an inner side wall and a top wall substantially closing an end the cavity; and a second part secured to the gearbox, the second part having a coupling post projecting therefrom for mating reception within the connecting cavity; the connecting cavity being shaped relative to the coupling post such that, when the coupling post mates with the connecting cavity, the inner side wall of the connecting cavity constrains movement of the coupling post in a direction laterally transverse to the longitudinal axis of the gas turbine engine while permitting linear movement of the coupling post in the connecting cavity along said longitudinal axis as well as angular movement about a central longitudinal axis of the coupling post, the coupling post being shorter than a depth of the connecting cavity such that a space is formed between a top wall of the coupling post and the top wall of the connecting cavity, and a vent hole being formed in the top wall of the connecting cavity to evacuate air during assembly of the first part with the second part.