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http://dx.doi.org/10.20910/JASE.2022.16.4.88

Vibration Mode Measurement Test of External Fuel Tank for Aircraft  

Kim, Hyun-gi (Korea Aerospace Research Institute)
Choi, Hyun Kyung (Hanwha Aerospace Corporation)
Kim, Sungchan (Korea Aerospace Research Institute)
Park, Hyung Bae (Hanwha Aerospace Corporation)
An, Su Hong (Hanwha Aerospace Corporation)
Kim, Young Shin (Hanwha Aerospace Corporation)
Publication Information
Journal of Aerospace System Engineering / v.16, no.4, 2022 , pp. 88-94 More about this Journal
Abstract
The vibration mode measurement test measures the natural vibration characteristics of the target specimen. The measured natural mode characteristics are compared with the numerical analysis result to verify the reliability of the numerical analysis. If necessary, it is used to supplement the numerical analysis model of the specimen used for the dynamic characteristic analysis. In this paper, the natural frequency and natural mode of the external fuel tank are respectively obtained through the vibration mode measurement test and the numerical analysis, using the finite element model. The results are compared to verify the reliability of the numerical analysis model of the external fuel tank to apply to the entire aircraft model. To measure the vibration mode of the test specimen, a bungee cord was used, to simulate the free boundary condition for the test specimen. And, 3-axis accelerometers were installed on the test specimen. The response characteristics of the test specimen were measured, by excitation with an impact hammer. As a result of the test, after performing the frequency response analysis on the response acceleration, the natural frequency of the test specimen and its vibration mode were confirmed. The reliability of the numerical analysis model was verified by comparing the frequency and vibration mode, obtained through the test and the numerical analysis.
Keywords
Bungee Cord; External Fuel Tank; Finite Element Model; Frequency Response Analysis; Vibration Mode Measurement Test;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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1 S.R. Kim, W.D. Kim, "Research of Vibration Analysis and Resonance Avoidance Design of Composite Quadcopter," Composites Research, vol. 33, no. 3, pp. 133-139, 2020. DOI: https://doi.org/10.7234/composres.2020.33.3.133   DOI
2 MIL-A-8870C, "Airplane Strength and Rigidity: Vibration, Flutter, and Divergence," 25 March 1993.
3 J. Park, Y. Moon, S. Jung, I. Kang, "A Study on the Vibration Modal Testing and Analytical Model Updating of Liquid Rocket Engine of KSLV-II," 8th European Conference for Aeronautics and Space Sciences(EUCASS), Madrid, Spain, 1-4 July 2019. DOI: 10.13009/EUCASS2019-1036   DOI
4 M.S. Kim, J.N. Kim, Y.S. Byun, J. Kim, B.S. Kang, "Study on Analysis of Vibration Characteristics and Modal Test for a Quad-Rotor Drone," Journal of the Korean Society for Precision Engineering, vol. 33, no. 9, pp. 707-714, 2016. DOI: http://dx.doi.org/10.7736/KSPE.2016.33.9.707   DOI
5 S.W. Lee, "Flutter Analysis of the OPPAV Full Scale Model," The Korean Society of Mechanical Engineers Annual Meeting 2021, pp. 1752-1753, Gwangju, Korea, 3~6 Nov. 2021.
6 S.C. Lee, I.S. Son, K.D. Hur, "Vibration Analyses and Design of Resonance Avoidance of the Unmanned Helicopter Master," Journal of the Korean Society for Precision Engineering, vol. 28, no. 8. pp. 951-958, 2011.
7 S.W. Lee, S.K. Paek, S.C. Kim, I.H. Hwang, "Flutter Analysis of Small Aircraft using Full Airframe Dynamic FE Model," Proceedings of the KSME 2008 Fall Annual Meeting, pp. 424-429, Pyeongchang, Korea, 5-7 Nov. 2008.
8 K.H. Byun, C.Y. Park, J.H. Kim, "Ground Vibration Test of KF-16D," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 33, no. 5, pp. 41-49, 2005. DOI: https://doi.org/10.5139/JKSAS.2005.33.5.041   DOI
9 S.H. Kim, D.I. Kwak, S.U. Jung, J.H. Choi, J.H. Kim, "Ground Vibration Test for Korean Utility Helicopter," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 41, no. 6, pp. 495-501, 2013. DOI: http://dx.doi.org/10.5139/JKSAS.2013.41.6.495   DOI
10 S.W. Lee, S.W. Park, J.W. Shin, "Flutter Analysis of a High-Altitude Solar Powered UAV," The Transactions of the Korean Society of Mechanical Engineers A, vol. 41, no. 12, pp. 1215-1221, 2017. DOI: https://doi.org/10.3795/KSME-A.2017.41.12.1215   DOI
11 H.J. Yoo, K.H. Byun, K.Y. Park "The Ground Vibration Test on an Aircraft and FE Model Update," Journal of the Korean Society for Noise and Vibration Engineering, vol. 8, no. 4, pp. 690-699, 1998.
12 J.S. Lim, S.W. Lee, T.U. Kim, "Updating HALE UAV Analysis Model Based on Ground Vibration Test Results," The Korean Society for Noise and Vibration Engineering 2017 fall Conference, p. 175, Chungnam Yesan, Korea, 18~20 Oct. 2017
13 B.H. Jeon, H.W. Kang, J.J. Lee, Y.S. Lee, "Ground Vibration Tests of Smart UAV Airframe Structure," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 38, no. 5, pp. 482-489, 2010. DOI: https://doi.org/10.5139/JKSAS.2010.38.5.482   DOI
14 S.K. Paek, Y.J. Choi, "Flutter Analysis Model Tuning of KC-100 Aircraft with the Ground Vibration Test Resutls," Proceedings of the Korean Society for Noise and Vibration Engineering Conference 2011, pp. 191-195, Daegu, Korea, 27~28 Oct. 2011.
15 K.H. Byun, S.M. Jun, "Flutter Analysis of F-16 Aircraft Using Test Modal Data," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 34, no. 4, pp. 76-82, 2006. DOI: https://doi.org/10.5139/JKSAS.2006.34.4.076   DOI
16 H.T. Lim, J.R. Kwon, K.H. Byun, H.J. Kim, J.H. Kim, "Aeroelastic Compatibility Substantiation of Aircraft External Stores Using the Dynamic Characteristic Data from Ground Vibration Test," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 45, no. 4, pp. 269-275, 2017. DOI: https://doi.org/10.5139/JKSAS.2017.45.4.269   DOI
17 J.K. Park, S.H Kim, D.I Kwak, B.W Lee, "Ground Resonance Analysis for the Class of Korean Utility Helicopter," Journal of The Korean Society for Aeronautical and Space Sciences 2007 Spring Conference, pp. 890-893, 2007.