A door system with a deceleration mechanism may be adapted to control an opening of a door module that separates compartments of an aircraft and includes a door panel and a door frame. During the opening of the door module, the door panel performs a rotational movement 389 above a floor structure of the aircraft. The deceleration mechanism is operable in a normal operation mode and a deceleration mode and comprises a hinge, a wedge-shaped component that is rotatably attached to the hinge, and an activation device. The activation device is coupled to the wedge-shaped component and switches the deceleration mechanism from operating in the normal operation mode to operating in the deceleration mode when a difference in pressure between the compartments exceeds a predetermined threshold.

A door system with a deceleration mechanism may be adapted to control an opening of a door module that separates compartments of an aircraft and includes a door panel and a door frame. During the opening of the door module, the door panel performs a rotational movement 389 above a floor structure of the aircraft. The deceleration mechanism is operable in a normal operation mode and a deceleration mode and comprises a hinge, a wedge-shaped component that is rotatably attached to the hinge, and an activation device. The activation device is coupled to the wedge-shaped component and switches the deceleration mechanism from operating in the normal operation mode to operating in the deceleration mode when a difference in pressure between the compartments exceeds a predetermined threshold.

The gate has an exchangeable span that is fixed to the load bearing beam and is connected with pulley bearings and rope-slings to the system of adjustable counterweights. The drive system is fitted with an electric drive with a worm-wheel mounted to the load bearing beam that travels vertically along the worm. The beam, span and the drive travel on adjustable guiderails inside a reinforced concrete pit in the direction opposite to that of counterweights. The load bearing beam is fitted with rollers and retaining rollers mounted to the cover. Emergency (manual) operation of the gate is possible by turning a crank handle connected with the worm, having released the lock that prevents the worm from rotating on its axis.