Research Article | OPEN ACCESS
Numerical Simulation of Helicopter Cockpit Seat subjected to Crash Impact
1M.S. Risby, 1A.J. Khalid, 1K.Y. Leong, 1B.A. Gurunathan, 1M.N. Sulaiman and 2M.K. Rahman
1Protection and Survivability Research Unit (PROTECT), Faculty of Engineering,Universiti Pertahanan Nasional Malaysia, Kem Sg Besi, 57000 Kuala Lumpur, Malaysia
2Crash Safety Engineering (CRASE), Malaysian Institute of Road Safety Research (MIROS), Taman Kajang Sentral, 43000 Kajang, Selangor, Malaysia
Research Journal of Applied Sciences, Engineering and Technology 2013 1:72-78
Received: February 13, 2012 | Accepted: March 08, 2012 | Published: January 01, 2013
Abstract
Sikorsky S-61 or better known as “Nuri” had served the Malaysian aviation sector for the past four decades. It is mainly used for transportation, combat search and rescue purposes. However, there were Nuri helicopter crashes or accident cases reported during its operation period which involved loss of its occupants. The pilot survivability rate can be improved provided that the vertical impact loading on the helicopter is reduced during the crash accident. Utilization of an energy absorbing pilot seat or cockpit structure maybe one of the approaches to minimize the impact shock exerted to the occupants. However, the shock or maximum acceleration of the cockpit/pilot seat has to be first determined before a thorough design scheme can be undertaken. In this study, a vertical crash event of the Nuri pilot seat from 500 feet altitude was simulated and the maximum acceleration rate was determined using MSC PATRAN/LS-DYNA. The pilot survivability was determined by comparing the result with human tolerance criteria data available in other published works. From the result, it was found that the maximum acceleration of the Nuri pilot seat was 584.4g at 19. 63 milliseconds, thus it can be concluded that the survivability aspect of the pilot is fatal when compared to other published works.
Keywords:
Crash, aircraft, aerospace, finite element analysis, impact,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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