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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (1): 230631.doi: 10.7527/S1000-6893.2024.30631

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Protective effect of aviation child restraint systems on 3-year-old children and influence on rear passengers: Experiment

Xiaopeng SHI1, Weiliang LI2, Chen XIONG3, Yafeng WANG4, Yonglong HE5, Zhenyu FENG1()   

  1. 1.Research Institute of Science and Technology Innovation,Civil Aviation University of China,Tianjin 300300,China
    2.School of Safety Science and Engineering,Civil Aviation University of China,Tianjin 300300,China
    3.Test and Metrology Center,China Special Aircraft Research Institute,Jingmen 448001,China
    4.Technology on Structures Impact Dynamics,Aircraft Strength Research Institute of China,Xi’an 710065,China
    5.China Automotive Inspection Center (Tianjin) Co. ,Ltd,Tianjin 300300,China
  • Received:2024-05-06 Revised:2024-06-19 Accepted:2024-08-09 Online:2025-01-15 Published:2024-09-09
  • Contact: Zhenyu FENG E-mail:mhfzy@163.com
  • Supported by:
    Basic Research Foundation of the Central Universities(31220200069)

Abstract:

In air transportation, children aged 2 and above can use aviation seat belts for restraint; however, these seat belts are designed for adult passengers, and their protective effects on children aged 2 and above still need to be studied. This study focuses on three types of restraint systems-aviation seat belts, Child Aviation Restraint System and child seats, and evaluates the protective effects of different types of restraint systems on children and their impact on rear passengers through sled tests. The results show that the protective effect of aviation seat belts is poor, and the head of the child dummy will hit the back of the front seat backrest, posing risks of injury to the neck and chest. When used in conjunction with aviation safety belts, CARES demonstrates higher compatibility with aviation seats, with lower injury data for the head, neck, chest, and abdomen compared to injury criteria. Despite better protection for children provided by the forward facing child seat than aviation seat belts and CARES, there are installation difficulties and other issues. Larger pre-tensioning force of the safety belt that secures the child seat produces better protective effect on children, and the rear passengers have little influence on the protection effect of the front child seat. However, using child seats can strengthen the stiffness of the aviation seat back, thus increasing the risk of head injuries for rear passengers, though with a relatively small impact on neck injury. Meanwhile, the impact of using child seats on head injuries of rear passengers is related to the distance between the seats.

Key words: child aviation safety, child restraint systems, sled test, injury criteria, protection characteristics

CLC Number: