Browse > Article
http://dx.doi.org/10.20910/JASE.2021.15.1.7

Modeling of MR Damper Landing Gear Considering Incompletely Developed Fluid Flow  

Lee, Hyo-Sang (Dept. of Aerosapce of Mechanical Engineering, Graduate at KAU)
Jang, Dae-Sung (Dept. of Aerosapce of Mechanical Engineering, Korea Aerospace University)
Hwang, Jai-Hyuk (Dept. of Aerosapce of Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.15, no.1, 2021 , pp. 7-18 More about this Journal
Abstract
A semi-active MR damper landing gear is a damper that generates a fluid damping force and a magnetic field control damping force when the MR fluid passes through annular flow paths. In the case of MR fluid passing through annular flow paths, an incompletely developed flow inevitably occurs, causing an error in calculating damper inner forces including the fluid damping force. This error results in an inaccurate design of damper structural parameters and control gain selection, resulting in deterioration of dynamic characteristics and shock absorption performance of the landing gear. In this paper, we derived a mathematical model of an MR damper landing gear considering additional damping force generated in the entrance region of annular flow paths of the MR damper. If the mathematical modeling derived from this paper is applied to the design and optimization process of an MR damper landing gear, excellent performance of the MR damper landing gear is expected.
Keywords
Semi-Active Control; MR Damper; Oleo-Punuematic Damper; Undeveloped Flow; Skyhook Control;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bo-Gyu Kim, Chulhee Han, Seung-Bok Choi, "Design and Analysis of MR Damper for Airplane Landing Gear," Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 28, pp. 102-109, February, 2018.   DOI
2 T. S. LUNDGRENG, E. M. SPARROW, J. B. STARR, "Pressure Drop Due to the Entrance Region in Ducts of Arbitrary Cross Section," ASME Trans. Journal of Basic Engineering, Vol. 86, pp. 620-626, September 1964.   DOI
3 Byung-Hyuk Kang, Chulhee Han, Seung-Bok Choi, "Design of Sky-ground Hook Controller for MR Damper of Aircraft Landing Gear," Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 29, pp. 222-229, 2019.   DOI
4 Jae-Up hwang, jae-hyuk hwnag, jae-Sung Bae, young-O Hyun, Kyoung-ho Lim, Doo-Man Kim, Tae-Wook Kim, "Smi-Active Control of helicompter Landing Gear using Magneto-Rheological Damper," Journal of Aerospace System Engineering, Vol. 36, pp. 346-351, February, April, 2008.
5 Mahboubeh Khani, "Magneto-Rheological (MR) Damper for Landing Gear System," MS Thesis, Concordia University, Montreal, Quebec, Canada, June, 2010.
6 Young-Tai Choi, Norman M. Wereley, "Vibration Control of a Landing Gear System Featuring Electrorheological/Magnetorheological Fluids," Journal of Aircraft, Vol. 40, No. 3, May-June, 2003.
7 Milwitzky, B., and Cook, F., "Analysis of Landing Gear Behavior," NACA TN 2755, 1952.
8 Currey, N., "Aircraft Landing Gear Design Principles and Practices," AIAA Education Series, 1988.
9 Janusa Wojtkowiak, Czeslqw O. Popiel, "Inherently Linear Annular-Duct-Type Laminar Flowmeter," ASME Trans. Journal of Fluids Engineering, Vol.128, January 2006.
10 Milwitzky, B., and Cook, F., "Analysis of Landing Gear Behavior," NACA TN 2755, 1952.
11 Guang Yang, B.S, "Large-Scale Magnetorheological Fluid for Vibration Mitigation: Modeling, Testing and Control," MS Thesis, University of Notre Dame, Notre Dame, Indiana, United States of America, December, 2001.
12 J. M. Tak, "A Hybrid Control Technique of the Intelligent Landing Gear with Variable Damping Force," MS Thesis, Korea Aerospace University, Gyeong-gi, Republic of Korea, February, 2018.
13 Quoc Viet Luong, Dae-Sung Jang and Jai-Hyuk Hwang, "Robust Adaptive Control for an Aircraft Landing Gear Equipped with a Magnetorheological Damper," Applied Sciences, Vol. 10, pp. 1459-1475, 2020.   DOI
14 Chulhee Han, Byung-Hyuk Kang, Seung-Bok Choi, Jun Mo Tak and Jai-Hyuk Hwang, "Control of Landing Efficiency of an Aircraft Landing Gear System With Magnetorheological Dampers," Journal of Aircraft, Vol. 56, pp. 1981-1986, September, 2019.
15 Ahuree-Powell, L. A., "Magnetorheological Fluids and Applications to Adaptive Landing Gear for a Lightweight Helicopter," Ph. D. Thesis, University of Maryland, Maryland, United States of America, 2014.
16 Eroglu, M. A., "Observer Based Control of an Magnetorheological Damper," Ph. D. Thesis, University of Sheffield, Sheffield, United Kingdom, 2013.
17 J. M. Tak, L. Q. Viet, and J. H. Hwang, "Hybrid Control of Aircraft Landing Gear using Magnetorheological Damper," Journal of Aerospace System Engineering, Vol.12, No.1, pp.1-9, February, 2018.   DOI
18 Y. O. Hyun, "Semi-Active Force Control of Landing Gear using Magneto-Rheological Damper," Ph. D. dissertation, School of Aerospace and Mechanical Engineering, Korea Aerospace University, 2009.