A head and neck guard for an ejection rescue seat of a fighter pilot

Abstract

A head and neck guard for an ejection rescue seat of a fighter pilot includes a headrest panel. The headrest panel is arranged on that rotating shaft, the two sides of the rotating shaft are connectedwith the airbag through a volute spring power device nested inside and outside. An air bag is compose of a lateral air bag and a transverse air bag. When the ejection seat is not activated, and whennot working, rotation of the drum is restricted by a stop pin in a powder unit. The rotation of the rotary shaft is limited by the stopper pin 2 in the drum, so that the headrest panel is in a fixed state and does not affect the pilot to normally fly the aircraft. When the ejection seat is started, the stopper pin is ejected by the gas, so that the drum can be rotated under the drive of the volutespring, and the head rest panel on the rotary shaft is driven to rotate forward to follow the head movement. At that same time, the air bag is star to start to support the head and neck, and the forward movement distance of the head can also be reduced. The head and neck guard not only solves the problem that the head is fixed to a specific position, but also avoids the problem that the head andneck of the human body are damaged by rigid driving.

Description

technical field [0001] The invention relates to the technical field of ejection lifesaving for fighter pilots, in particular to a head and neck protection device for a fighter pilot ejection lifesaving seat. Background technique [0002] Many fighter jets have crashed in air combat and training, and ejection rescue is the last resort to save the lives of pilots when fighter jets crash. However, the acceleration of up to 16-25G during ejection can cause cervical spine fractures, neck breaks, and concurrent brain damage, and even death. At the beginning of the ejection, the pilot's head and neck are affected by the acceleration, and the head is bowed forward; after the ejection, the pilot's head is hit by the airflow, and it will be violently thrown backwards or sideways, which can easily cause head and neck injuries. injury or even death. [0003] US patents US 7,878,452 B2 and US 2013 / 0187003 A1 have reported two types of deployable headrest devices; the specific technical...

AI Technical Summary

Problems solved by technology

[0004] However, the patent US 7,878,452 B2 has three technical defects: it adopts a mechanical structure completely, and the structure is complex; it takes up a lot of space and is heavy; the ability of the lateral pillars to limit the left and right movement of the head is limited

The patent US 2013 / 0187003 A1 has two technical defects: the way of enveloping the head and neck with the airbag takes up a lot of space, which is extremely unfavorable for the aerodynamic performance of the seat system during flight; the head is fixed to the seat through the rear airbag Forward flexion position, not flexible drive, poor individual adaptability, may cause head and neck injury

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