ABSTRACT

Objective: This paper aims to provide an overview of concepts, progress, and challenges of life preservers, which may promote the importance of life preservers, and present several urgent issues on life preservers.

Background: Although life preservers are required on an airplane in some overwater operations by the regulations of many countries, some airlines and many passengers have ignored life preservers.

Method: Different requirements for life preservers are presented and compared. Then the progress on life preservers is analyzed. Based on these analyses, two problems of existing life preservers are summarized, and corresponding challenges are also proposed.

Results: The difficulty of donning life preservers has been repeatedly proved through some major attempts to solve the problem. Furthermore, existing life preservers may make the passengers at risk of flight over cold water due to lack of thermal protection.

Conclusion: Life preservers play a vital role in ensuring passenger safety in awater-related accident, but several urgent issues must be addressed on further improvement of life preservers.

摘要

目的：本文旨在概述救生员的概念，进展和挑战，这可能会提高救生员的重要性，并提出一些有关救生员的紧迫问题。

背景：尽管许多国家/地区的法规要求在某些水上操作中飞机上都需要救生圈，但一些航空公司和许多乘客却忽略了救生圈。

方法：提出并比较了对救生员的不同要求。然后分析了救生圈的研究进展。在这些分析的基础上，总结了现有救生圈的两个问题，并提出了相应的挑战。

结果：通过一些重大尝试来解决穿救生衣的困难。此外，由于缺乏热保护，现有的救生圈可能使乘客处于越过冷水飞行的危险中。

结论：救生衣在确保与水有关的事故中的乘客安全方面起着至关重要的作用，但是在进一步改善救生衣方面必须解决一些紧迫的问题。