Ejection Seat Cushions Static Evaluation for Three Different Installation Rail Angles

Ojetola, Akindeji; Onyebueke, Landon; Winkler, Edward

doi:10.4271/2011-01-0806

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…The ejection seat system is designed to optimize the safety of fighter pilots during ejection rather than their comfort when sitting on the seat ( Ojetola et al, 2011 ). However, in repeated training and long-endurance missions, attention has been focused on the comfort of the seat.…”

Section: Introductionmentioning

confidence: 99%

“…For research on the comfort of ejection seats, Ojetola et al (2011) and Qiu et al (2012) studied the impact of seat inclination on comfort. Pint et al (2002) and Cheng and Pellettiere (2005) analyzed the comfort of current cushions in the US military and found that slow-recovery cushions generally have better performance, but their comfort is also related to material property.…”

Section: Introductionmentioning

confidence: 99%

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

Jiayi

Zhou

Wang

et al. 2021

Front. Bioeng. Biotechnol.

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Jiayi

Zhou

Wang

et al. 2021

Front. Bioeng. Biotechnol.

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Experimental Validation of the Computer Aided Design Technique for Seat Comfort Design and Evaluation

Amer¹,

Onyebueke²

2013

SAE Technical Paper Series

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The History of Human Factors in Seating Comfort at SAE’s World Congress: 1999 to 2018

Kolich¹

2019

SAE Int. J. Adv. & Curr. Prac. in Mobility

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<div class="section abstract"><div class="htmlview paragraph">In many fields of technology, examinations of the past can provide insights into the future. This paper reviews the last 20 years of automotive seat comfort development and research as chronicled by SAE’s session titled “Human Factors in Seating Comfort”. Records suggest that “Human Factors in Seating Comfort” has existed as a separate session at SAE’s World Congress since 1999. In that time there have been 148 unique contributions (131 publications). The history is fascinating because it reflects interests of the time that are driven by technology trends, customer wants and needs, and new theories. The list of contributors, in terms of authors and their affiliations, is also telling. It shows shifts in business models and strategies around collaboration. The paper ends with a discussion of what can be learned from this historical review and the major issues to be addressed. One of the more significant contributions of this paper is the reference list. It contains all 131 of SAE’s “Human Factors in Seating Comfort” published papers in a single location. These references represent the foundation of automotive seating comfort, which should be considered core knowledge and should be familiar to those in the profession, both new and old.</div></div>

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Ejection Seat Cushions Static Evaluation for Three Different Installation Rail Angles

Cited by 3 publications

References 3 publications

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

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

Experimental Validation of the Computer Aided Design Technique for Seat Comfort Design and Evaluation

The History of Human Factors in Seating Comfort at SAE’s World Congress: 1999 to 2018

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