Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution

Sitting discomfort not only affects the health of pilots carrying out long-endurance missions but also affects operational performance. The experimental objects included four ejection seat cushions: N1 was a fast-recovery foam as the comparison group, and the experimental groups were slow-recovery f...

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Autores principales:	Jiayi Bao, Qianxiang Zhou, Xingwei Wang, Chao Yin
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	comfort evaluation sitting pressure distribution ejection seat cushion pilots healthcare slow-recovery materials Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/f2d331ca059a46f3b3328f78d1cda4c5
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id	oai:doaj.org-article:f2d331ca059a46f3b3328f78d1cda4c5
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spelling	oai:doaj.org-article:f2d331ca059a46f3b3328f78d1cda4c52021-12-01T17:03:59ZComfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution2296-418510.3389/fbioe.2021.759442https://doaj.org/article/f2d331ca059a46f3b3328f78d1cda4c52021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbioe.2021.759442/fullhttps://doaj.org/toc/2296-4185Sitting discomfort not only affects the health of pilots carrying out long-endurance missions but also affects operational performance. The experimental objects included four ejection seat cushions: N1 was a fast-recovery foam as the comparison group, and the experimental groups were slow-recovery foams with different indentation force deflection (IFD), named N2 (hard), N3 (mid), and N4 (soft). The sitting comfort of 20 participants was tested on the four cushions by using subjective rating and sitting pressure distribution analysis. The results showed that compared with fast-recovery cushion N3 and N4 slow-recovery cushions have lower contact pressure and more uniform pressure distribution. Slow-recovery cushions that were too soft or too hard would reduce the comfort. No matter from the subjective rating or the analysis of the contact pressure data, the N3 cushion with a thickness of 3 cm and 65% IFD of 280 N had the highest comfort. In addition, the seat pressure distribution (SPD%) has a significant correlation with the subjective rating (p = 0.019, R = −0.98), which is more suitable for evaluating the comfort of the cushions. However, the slow-recovery cushions would show a decrease in support after a period of sitting, while the fast-recovery cushion could always maintain constant support.Jiayi BaoJiayi BaoQianxiang ZhouQianxiang ZhouXingwei WangChao YinChao YinFrontiers Media S.A.articlecomfort evaluationsitting pressure distributionejection seat cushionpilots healthcareslow-recovery materialsBiotechnologyTP248.13-248.65ENFrontiers in Bioengineering and Biotechnology, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	comfort evaluation sitting pressure distribution ejection seat cushion pilots healthcare slow-recovery materials Biotechnology TP248.13-248.65
spellingShingle	comfort evaluation sitting pressure distribution ejection seat cushion pilots healthcare slow-recovery materials Biotechnology TP248.13-248.65 Jiayi Bao Jiayi Bao Qianxiang Zhou Qianxiang Zhou Xingwei Wang Chao Yin Chao Yin Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
description	Sitting discomfort not only affects the health of pilots carrying out long-endurance missions but also affects operational performance. The experimental objects included four ejection seat cushions: N1 was a fast-recovery foam as the comparison group, and the experimental groups were slow-recovery foams with different indentation force deflection (IFD), named N2 (hard), N3 (mid), and N4 (soft). The sitting comfort of 20 participants was tested on the four cushions by using subjective rating and sitting pressure distribution analysis. The results showed that compared with fast-recovery cushion N3 and N4 slow-recovery cushions have lower contact pressure and more uniform pressure distribution. Slow-recovery cushions that were too soft or too hard would reduce the comfort. No matter from the subjective rating or the analysis of the contact pressure data, the N3 cushion with a thickness of 3 cm and 65% IFD of 280 N had the highest comfort. In addition, the seat pressure distribution (SPD%) has a significant correlation with the subjective rating (p = 0.019, R = −0.98), which is more suitable for evaluating the comfort of the cushions. However, the slow-recovery cushions would show a decrease in support after a period of sitting, while the fast-recovery cushion could always maintain constant support.
format	article
author	Jiayi Bao Jiayi Bao Qianxiang Zhou Qianxiang Zhou Xingwei Wang Chao Yin Chao Yin
author_facet	Jiayi Bao Jiayi Bao Qianxiang Zhou Qianxiang Zhou Xingwei Wang Chao Yin Chao Yin
author_sort	Jiayi Bao
title	Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
title_short	Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
title_full	Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
title_fullStr	Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
title_full_unstemmed	Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution
title_sort	comfort evaluation of slow-recovery ejection seat cushions based on sitting pressure distribution
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/f2d331ca059a46f3b3328f78d1cda4c5
work_keys_str_mv	AT jiayibao comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT jiayibao comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT qianxiangzhou comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT qianxiangzhou comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT xingweiwang comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT chaoyin comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution AT chaoyin comfortevaluationofslowrecoveryejectionseatcushionsbasedonsittingpressuredistribution
_version_	1718404788069072896

Comfort Evaluation of Slow-Recovery Ejection Seat Cushions Based on Sitting Pressure Distribution

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