| DOI | Resolve DOI: https://doi.org/10.2514/6.2021-1835 |
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| Author | Search for: Chang, Jason1; Search for: Fereidooni, Amin1; Search for: Wickramasinghe, Viresh1; Search for: Chen, Yong1 |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Conference | AIAA Scitech 2021 Forum, 11–15 and 19–21 January 2021, Virtual Event |
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| Abstract | This paper presents the development and evaluation of an actively controlled multi-axis helicopter seat mount system for aircrew whole-body vibration mitigation applications. The multi-axis seat mount system is designed to be installed between the helicopter seat floor and the supporting structure of seat frame to minimize the impact on the crashworthiness requirements of the helicopter seat. The active seat mount was designed to incorporate multiple miniature force actuators to counteract the vibrations transmitted from the helicopter floor to the seat frame and aircrew in three orthogonal directions. The actuators are controlled by an adaptive feedforward filtered-x Least Mean Square (LMS) algorithm to cancel the helicopter floor vibration input. The prototype active seat mount design has been tested with a Bell-412 pilot seat and three Hybrid III manikins, with a shaker table to provide representative Bell-412 helicopter vibration profiles. Test results demonstrated that the vibrations of the seat frame and manikin occupant were suppressed simultaneously, and the occupant whole-body vibration related to the major N/rev harmonic peaks were reduced by 90%. This demonstrated that the multi-axis active seat mount design has the potential to mitigate the whole-body vibration exposure of the helicopter aircrew to improve their ride quality and reduce vibration related adverse health effects. |
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| Publication date | 2021-01-04 |
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| Publisher | American Institute of Aeronautics and Astronautics |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 657f0b5e-b8bc-42fe-a897-c9ee72948269 |
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| Record created | 2023-06-20 |
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| Record modified | 2023-06-20 |
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