Abstract: A seat for a vehicle, that includes a headrest with a headstall for supporting the head of a passenger in the seat, wherein the occupant may or may not wear a protection helmet depending on the circumstances. The headstall can assume at least three stable positions: a first position for the cervical support of the head of the seat passenger in which the headrest provides a cervical support function with or without wearing a helmet; a second position for the occipital support of the head of the seat passenger in which the headrest provides an occipital support function without wearing a helmet; a third position for the occipital support of the head of the seat passenger in which the headrest provides an occipital support function while wearing a helmet.

Abstract: An aircraft flight deck includes: first and second seats disposed side-by-side longitudinally in a flying direction of an aircraft, and separated by a central pedestal; control or display elements distributed ergonomically in the flight deck; and a third seat disposed longitudinally in the flying direction, located behind the first and second seats, and at a rear of the central pedestal. The central pedestal includes: a connecting device for the display elements, a control device dedicated to a third crew member and disposed at a side of the third seat; and display or control elements dedicated to tasks other than piloting, and visible and accessible from the three seats.

Abstract: The invention relates to a seat for a vehicle, that includes a headrest with a headstall for supporting the head of a passenger in the seat, wherein the occupant may or may not wear a protection helmet depending on the circumstances. The headstall can assume at least three stable positions: a first position for the cervical support of the head of the seat passenger in which the headrest provides a cervical support function with or without wearing a helmet; a second position for the occipital support of the head of the seat passenger in which the headrest provides an occipital support function without wearing a helmet; a third position for the occipital support of the head of the seat passenger in which the headrest provides an occipital support function while wearing a helmet.

Abstract: An aircraft flight deck includes: first and second seats disposed side-by-side longitudinally in a flying direction of an aircraft, and separated by a central pedestal; control or display elements distributed ergonomically in the flight deck; and a third seat disposed longitudinally in the flying direction, located behind the first and second seats, and at a rear of the central pedestal. The central pedestal includes: a connecting device for the display elements, a control device dedicated to a third crew member and disposed at a side of the third seat; and display or control elements dedicated to tasks other than piloting, and visible and accessible from the three seats.