Abstract: The invention relates to a jet engine nacelle intended to equip an aircraft, comprising a forward air inlet section, a mid-section intended to surround a fan of the jet engine, and an aft section formed from at least first and second hath-shells rotatably mounted about an axis such that they can each be deployed between a working position in which the half-shells are drawn towards one another and a maintenance position in which the half-shells are spaced apart, at least the first half-shell (11) being equipped with a first follower element (19) in a region situated at a distance from the axis of rotation, the nacelle being equipped with a first fixed guide element (28), the first follower element (19) being designed to bear against a first guide element (28) which is fixed with respect to the jet engine during the rotation of the first half-shell (11).

Abstract: The invention relates to a method of controlling access to multicast IP flows. Following connection to a collection equipment by a user terminal, the method consists in: transmitting an access authorization request message from said collection equipment to an access control server; and, subsequently, upon successful verification of the user access right, transmitting an access authorization acceptance message comprising at least one multicast filter from the server to the collection equipment or, in the absence of a successful verification, transmitting an access refusal message from the server to the collection equipment in order to inhibit the connection of the user terminal. The invention is suitable for multicast broadcasting over an IP, Internet and/or corporate network.

Abstract: The invention relates to a jet engine nacelle intended to equip an aircraft, comprising a forward air inlet section, a mid-section intended to surround a fan of the jet engine, and an aft section formed from at least first and second half-shells (9, 10) rotatably mounted about an axis (A) such that they can each be deployed between a working position in which the half-shells (9, 10) are drawn towards one another and a maintenance position in which the half-shells (9, 10) are spaced apart, the mid- and aft sections being connected to one another by a frame (12) which is fixed with respect to the jet engine, the first and second half-shells (9, 10) being equipped with positioning means (13) which in the working position cooperate with complementary positioning means (14) formed on the fixed frame (12).

Abstract: The invention relates to a jet engine nacelle intended to equip an aircraft, comprising a forward air inlet section, a mid-section intended to surround a fan of the jet engine, and an aft section formed from at least first and second half-shells (9, 10) rotatably mounted about an axis (A) such that they can each be deployed between a working position in which the half-shells (9, 10) are drawn towards one another and a maintenance position in which the half-shells (9, 10) are spaced apart, the mid- and aft sections being connected to one another by a frame (12) which is fixed with respect to the jet engine, the first and second half-shells (9, 10) being equipped with positioning means (13) which in the working position cooperate with complementary positioning means (14) formed on the fixed frame (12).

Abstract: The invention relates to a jet engine nacelle intended to equip an aircraft, comprising a forward air inlet section, a mid-section intended to surround a fan of the jet engine, and an aft section formed from at least first and second hath-shells rotatably mounted about an axis such that they can each be deployed between a working position in which the half-shells are drawn towards one another and a maintenance position in which the half-shells are spaced apart, at least the first half-shell (11) being equipped with a first follower element (19) in a region situated at a distance from the axis of rotation, the nacelle being equipped with a first fixed guide element (28), the first follower element (19) being designed to bear against a first guide element (28) which is fixed with respect to the jet engine during the rotation of the first half-shell (11).

Abstract: The invention concerns a method for measuring a multicast stream audience, said multicast stream being capable of being replicated by collecting equipment towards user terminals subscribing to said multicast stream. Said method includes a step of transmitting, via at least one collecting equipment to a counting platform, and in accordance with a counting protocol, at least one counting message comprising at least one audience information concerning the replications of the multicast stream by said at least one collecting equipment to at least one user terminal.

Abstract: The invention relates to a method of controlling access to multicast IP flows. Following connection to a collection equipment by a user terminal, the method consists in: transmitting an access authorization request message from said collection equipment to an access control server; and, subsequently, upon successful verification of the user access right, transmitting an access authorization acceptance message comprising at least one multicast filter from the server to the collection equipment or, in the absence of a successful verification, transmitting an access refusal message from the server to the collection equipment in order to inhibit the connection of the user terminal. The invention is suitable for multicast broadcasting over an IP, Internet and/or corporate network.