Patent ID: 8162257

Claim:
A nacelle for a double-flow engine with a cowling and at least one thrust reverser, said thrust reverser having an internal door and an external door arranged in said cowling, and means for simultaneously shifting said doors between a stable retracted position in which the doors are integrated in said cowling and a stable deployed position in which said internal and external doors are positioned at least partially inside and outside of said nacelle, respectively, to deflect to the outside, a secondary flow which circulates inside the nacelle around the engine and to generate a thrust reversal, wherein: said means for simultaneously shifting said doors comprise an actuator, one extremity of which is linked to one of said doors to shift this door between said extreme positions, and at least one linkage element linked to said doors to pivot by its extremities, so that the shifting of said door entails the shifting of the other door between said extreme positions, said actuator and said linkage element are so arranged that when said internal and external doors are in the deployed position, said external door is positioned vis-à-vis the internal door essentially parallel to said internal door, and the dimensions of said internal and external doors are defined in such a way that the sole application of the pressures P 1 and P 2 , respectively corresponding to the pressure exerted by an external incident flow on the surface S 1 of said external door when deployed outside the nacelle and to the pressure exerted by the secondary flow of the engine on the surface S 2 of said internal door when deployed inside the nacelle, holds said doors in the stable retracted position.