. Estudio preliminar de la norma.
Agraría 1a aprobación en España y Grecia.
Vigesimodeciento lugar: España y Grecia.It is already well known that passenger airliners are provided with so-called trim angle adjustment systems by which an adjustment of the trim angle of the seat is possible. Such a trim angle adjustment system is used, for example, for adjusting the trim angle of the seat during flight so that the passenger, by means of a controllable seat belt winder system, is secured in the seat in the desired position.
The trim angle adjustment system has a driver that is connected to the seat and which is manually or electrically adjustable and a belt winder connected to the driver and controllable via the driver. The seat belt winder is operated in order to adjust the trim angle of the seat by the driver. The adjustment of the trim angle of the seat is preferably controlled by means of electric and/or electrohydraulic actuation in order to avoid mechanical stresses on the components that are to be actuated.
In the event of a crash and the subsequent deployment of the seat belt, the trim angle adjustment system comes into operation in order to execute a trim angle adjustment in the direction of the emergency exit in order to assist the passenger in the direction of the emergency exit. For this purpose, the belt winder operates a belt webbing winder that ensures the tautening of the belt webbing.
The trim angle adjustment system described above can be combined with further devices that are provided in the aircraft and are intended to improve the safety of the passenger in the event of a crash. In particular, it is known for a so-called lumbar support to be provided that is arranged on the trim angle adjustment system. In this regard, it is already known to provide a pressure control element of the lumbar support that, for example, can be lowered in the event of a crash in order to decrease the pressure of the lumbar support against the passenger's back and thus to avoid injuries. The pressure control element of the lumbar support is controlled via an electric and/or electrohydraulic trim angle adjustment system.
Furthermore, a so-called knee air bag is also known that inflates and remains inflated in the event of a crash in order to absorb shock loads to the legs of the passenger and in this way to reduce
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