Deployable divergent nozzle for a propulsive unit

A deployable diverging bell for a thruster, the bell comprising:

• a stationary first diverging bell portion suitable for being connected to a stationary support of the thruster;
• a movable second diverging bell portion that is movable between a refracted position and a deployed position in which said second diverging bell portion is connected to a downstream end of the first diverging bell portion in order to extend said first diverging bell portion;
• at least one deployment mechanism adapted to move said movable second diverging bell portion relative to said stationary first diverging bell portion in order to deploy said movable second diverging bell portion from the refracted position thereof to the deployed position thereof;
• at least one damper for damping vibration coming from at least one of said movable second diverging bell portion and the deployment mechanism, the damper being positioned between the deployment mechanism and at least one of a stationary support of the thruster and the stationary first diverging bell portion;
• wherein:
• the deployment mechanism includes:
• at least one fastener assembly for fastening the deployment mechanism of the movable second diverging bell portion,
• the fastener assembly comprising a plurality of arms and a connection part, said arms being suitable for being fastened firstly to the stationary support of the thruster and being fastened secondly to the connection part, and wherein the angle between said arm and the connection part is an acute angle.

A deployable diverging bell for a thruster, the bell comprising:

• a stationary first diverging bell portion suitable for being connected to a stationary support of the thruster;
• a movable second diverging bell portion that is movable between a refracted position and a deployed position in which said second diverging bell portion is connected to a downstream end of the first diverging bell portion in order to extend said first diverging bell portion;
• at least one deployment mechanism adapted to move said movable second diverging bell portion relative to said stationary first diverging bell portion in order to deploy said movable second diverging bell portion from the refracted position thereof to the deployed position thereof;
• at least one damper for damping vibration coming from at least one of said movable second diverging bell portion and the deployment mechanism, the damper being positioned between the deployment mechanism and at least one of a stationary support of the thruster and the stationary first diverging bell portion;
• the deployment mechanism including at least one fastener assembly for fastening the deployment mechanism of the movable second diverging bell portion;
• the fastener assembly comprising a plurality of arms and a connection part, said arms being suitable for being fastened firstly to the stationary support of the thruster and being fastened secondly to the connection part, and wherein the angle between the damper and the deployment mechanism and the angle between the damper and said arm are acute angles.