Effect of body-borne equipment on injury of military pilots and aircrew during a simulated helicopter crash

Aggromito, Daniel; Thomson, Rodney S.; Wang, John; Chhor, Allen; Chen, Bernard; Yan, Wenyi

doi:10.1016/j.ergon.2015.07.001

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…In another research, Shanahan and Mastroianni 10 analyzed the lumbar injuries of occupants in crashes of OH-58 light helicopters. Moreover, Aggromito et al 11 evaluated the risk of personal injury through taking the lumbar load as an important evaluation index. From the above analyses and actual accident statistics, it is known that the lumbar injuries are the most fatal to helicopter occupants.…”

Section: Principle Of Energy Absorptionmentioning

confidence: 99%

Design method for expandable tubular energy absorber in crashworthy seat of civilian helicopter

Wang

Hou²,

Yan

et al. 2022

Advances in Mechanical Engineering

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The working load and stroke of energy absorption are two key performance parameters for energy absorber in designing crashworthy seat. A design method for expandable tubular energy absorber (ETEA) was proposed, which specifically involves the design methods of performance and structural parameters of ETEA. Firstly, the working load of ETEA was determined through establishing its relationship with the lumbar load of occupant from the perspective of biomechanics. Secondly, the stroke of energy absorption of ETEA was derived based on the mathematical model of helicopter crash. Thirdly, the relationship between the working load and the structural parameters of ETEA was determined based on the principal stress method, and the structural parameters of ETEA was obtained through clarifying the determined design parameters. Finally, the design method proposed was implemented by taking a helicopter seat as an example, and the expanding deformation and loading process of ETEA were investigated through numerical simulation and experiment. The results show that the magnitudes of working load in numerical simulation, experiment and design method are very close, demonstrating that the design method proposed is feasible and effective, and could be provided as theoretical guidance for the design of crashworthy seat of civilian helicopter.

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Section: Principle Of Energy Absorptionmentioning

confidence: 99%

Design method for expandable tubular energy absorber in crashworthy seat of civilian helicopter

Wang

Hou²,

Yan

et al. 2022

Advances in Mechanical Engineering

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“…It was proved that increasing the equipment mass would reduce the energy absorption capacity of the helicopter seat and increase the injury risks of the lumbar spine, hip, upper torso and head. Furthermore, a finite element model of a fully deformable 50th percentile Hybrid Ⅲ dummy carrying equipment and sitting on a helicopter crashworthy seat was developed to study the effect of the equipment location on the occupant injury [258]. The results showed that it would increase the lumbar load and the head's injury risk when the equipment was placed on the torso, while it would decrease the injury risk of lumbar and spinal region and provide a better protection for the neck and head.…”

Section: Occupant Response and Injurymentioning

confidence: 99%

Crashworthy design and energy absorption mechanisms for helicopter structures: A systematic literature review

Yang

Wen

et al. 2020

Progress in Aerospace Sciences

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“…Long et al analyzed draping effects of single layer clothes on the human body due to gravitational effects [11]. Aggromito et al investigated how the distribution of personal equipment on the body of military helicopter pilots affects the injury potential during a crash [12]. For this study, the primary survival gear carrier sitting on top of the flight suit and the body armor of the upper torso were modeled.…”

Section: Introductionmentioning

confidence: 99%

Combining protective clothes with human body models for finite element ballistic impact simulations

Boljen

Jenerowicz

Bauer

et al. 2023

cdatp

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The ballistic deformation of an ultra-high-molecular-weight (UHMW) polyethylene (PE) composite has been subjected numerically to a multi-layered soft ballistic fabric package modelled upon the body contours of the Global Human Body Models Consortium (GHBMC) human body models M50-P and F05-P. The results of the clothing-body-interaction have been investigated and compared to the behavior of anthropomorphic surrogate models made from ballistic clay. For building the fabric model in donned shape, a single ply of woven fabric material has been converted upon the anthropomorphic body contour by subjecting it to a quasi-deep drawing process. After the fabric deformation, the shaped layer was duplicated 20 times and shifted outwards to build the fabric model, representing a multi-layered soft ballistic fabric package. The results of the ballistic impact simulation show that the response of the human body models (HBMs) is much more compliant than the behavior of the surrogate models. The deformation of the female HBM in terms of penetration depth and diameter of the affected impact region is slightly more severe than the deformation of the male counterpart with respect to identical impact conditions.

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Effect of body-borne equipment on injury of military pilots and aircrew during a simulated helicopter crash

Cited by 6 publications

References 8 publications

Design method for expandable tubular energy absorber in crashworthy seat of civilian helicopter

Design method for expandable tubular energy absorber in crashworthy seat of civilian helicopter

Crashworthy design and energy absorption mechanisms for helicopter structures: A systematic literature review

Combining protective clothes with human body models for finite element ballistic impact simulations

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