A Novel Design and Structural Analysis of Spring Landing Gear for Unmanned Air Vehicles

Year 2022, Volume: 9 Issue: 2, 83 - 88, 30.06.2022

Mustafa Güven Gök Ömer Cihan

https://doi.org/10.17350/HJSE19030000258

Abstract

Aircraft are subjected to an impact load during landing. This situation becomes more important for unmanned aerial vehicles that are remotely controlled and must serve in extreme conditions. Because the landing gear should absorb this impact load as much as possible and prevent damage to the unmanned aerial vehicle body and its components. In this study, a landing gear design was developed for unmanned aerial vehicles that can absorb more impact load during landing. Numerical analyzes were performed to determine the fa-tigue life and the maximum impact load that the developed design could withstand. In addi-tion, a conventional landing gear was modeled and the results were compared. The properties of 7075-T6 Aluminum alloy were used as the landing gear material. As a result of the finite element analyzes made with Ansys software, it had been understood that the newly designed landing gear could absorb more energy than the conventional landing gear. It had also been determined that it could be used at values up to 3700N impact load

Keywords

Landing gear, 7075 Al alloy, Stress analysis, Fatigue analysis, Finite element method

Thanks

The authors would like to thank Istanbul Technical University Information Technologies Directorate for permission the use of the software.

References

• [1] Xue ZP, Li M, Li YH, Jia HG. A simplified flexible multibody dynamics for a main landing gear with flexible leaf spring. Shock and Vibration 2014 (2014) 1–10. doi: 10.1155/2014/595964.
• [2] Manjunath S, Monisha SV, Pooja M. Effect of Granite Powder and Crushed Ceramic Tiles on Properties of Concrete. Int. J. Eng. Res. Adv. Technol. 4:8 (2018) 1–5. doi: 10.31695/ijerat.2018.3304.
• [3] Sivakumar S, Haran AP. Mathematical model and vibration analysis of aircraft with active landing gears. JVC/Journal Vib. Control 21:2 (2015) 229–245. doi: 10.1177/1077546313486908.
• [4] Guan Y, Xue Z, Li M, Jia H. A numerical-experimental method for drop impact analysis of composite landing gear. Shock and Vibration 2017 (2017) 1–11. doi: 10.1155/2017/3073524.
• [5] Thiemeier J, Öhrle C, Frey F, Keßler M, Krämer E. Aerodynamics and flight mechanics analysis of Airbus Helicopters’ compound helicopter RACER in hover under crosswind conditions. CEAS Aeronaut. J. 11:1 (2020) 49– 66. doi: 10.1007/s13272-019-00392-3.
• [6] Krüger W, Morandi M. Numerical Simulation of Landing Gear Dynamics: State-of-the-art and Recent Developments. Paper presented at Proc. - AVT-152 Symp. Limit Cycle Oscil. Other Amplitude-Limited Self- Excited Vib., pp. 1–18, 2008.
• [7] Dutta A. Design and analysis of nose landing gear. Int. Res. J. Eng. Technol. 3:10 (2016) 261–266.
• [8] Swati RF, Khan AA. Design and structural analysis of weight optimized main landing gearsfor UAV under impact loading. J. Sp. Technol. 4:1 (2014) 96–100.
• [9] Wibawa LAN. Effect of fillet radius of UAV main landing gear on static stress and fatigue life using finite element method. Paper presented at in Journal of Physics: Conference Series, pp. 1–7, 2021, doi: 10.1088/1742- 6596/1811/1/012082.
• [10] Pradesh A, Reddy PSK, Rajesh B, Sridhar T, Pradesh A. Design and structural analysis of aircraft landing gear using. Int. J. Mech. Eng. Technol. 11:7 (2020) 7-14.
• [11] Chen PW, Huang WT. A simulation of the fatigue life of light aircraft glass fibre-reinforced composites landing gear. Mater. Res. Innov. 19:9 (2015) 142-147. doi: 10.1179/1432891715Z.00000 00001947.
• [12] Durmusoglu A. Analysis and vibration control of passenger aircraft landing gear. Doctoral Thesis, Institute of Science and Technology, Erciyes University, 2021.
• [13] Chen PW, Sheen QY, Tan HW, Sun TS. Fatigue analysis of light aircraft landing gear. Adv. Mater. Res. 550– 553 (2012) 3092-3098. doi: 10.4028/www.scientific.net/AMR.550-553.3092.
• [14] Yildirim O. The experimental and the numerical analysis of drop tests for the landing gear of unmanned model. Master's Thesis, Institute of Science and Technology, Gazi University, 2014.
• [15] Yildirim O, Günay E, Anil O, Aygün C. Analysis of a skid type landing gear of a rotary wing UAV by experimental and numerical methods. Acta Phys. Pol. A. 127:4 (2015) 1170-1175. doi: 10.12693/APhysPolA.127.1170.
• [16] Das N, Das S, Mishra DK, Pandey KM. Analysis of deformation and mode shape in the landing gear of light unmanned aerial vehicle. Paper presented at In Journal of Physics: Conference Series, 1455:1, pp. 1–5, 2020. doi: 10.1088/1742-6596/1455/1/012020.
• [17] Sonowal P, Das S, Mishra DK, Pandey KM. Stress analysis of Landing gear of light unmanned aerial vehicle’, Paper presented at In Journal of Physics: Conference Series, pp. 1–6, 2019. doi: 10.1088/1742-6596/1455/1/012019.
• [18] Yetkİn S. Koca GO. Stress-deformation analysis of the F16 aircraft auxiliary landing gear. Sigma J. Eng. Nat. Sci. 9:2 (2018) 223-234.
• [19] Al-bahkali EA. Analysis of different designed landing gears for a light aircraft. Int. J. Aerosp. Mech. Eng. 7:7 (2013) 406-409. doi: 10.5281/zenodo.1086883.
• [20] Rajesh A, Abhay BT. Design and analysis aircraft nose and nose landing gear. J. Aeronaut. Aerosp. Eng. 4:2 (2015) 2-5. doi: 10.4172/2168-9792.1000144.
• [21] Gokulraja V, Kumar K, Karthikeyan A, Veeramani S. Fatigue analysis of aircraft main landing gear, Int. J. Eng. Res. Technol. 3:26 (2015) 1–4.
• [22] Jeevanantham V, Vadivelu P, Manigandan P. Material based structural analysis of a typical landing gear. Int. J. Innov. Sci. Eng. Technol. 4:4 (2017) 295–300.
• [23] Parmar J, Acharya V, Challa J. Selection and analysis of the landing gear for unmanned aerial vehicle for SAE aero design series. Int. J. Mech. Eng. Technol. 6:2 (2015) 10-18.
• [24] Anitha D, Ravi Kumar P, Shamili GK, Praveen B, Structural and droptest analysis of helicopter landing skids. Int. J. Mech. Prod. Eng. Res. Dev. 7:5 (2017) 393-404. doi: 10.24247/ijmperdoct201740.
• [25] Hammad NA, Gadelrab RM, ELshaer YI. Weight optimization of fixed landing gear for medium range UAV. Eng. Res. J.. 161 (2019) 18-36. doi: 10.21608/erj.2019.139767.
• [26] Chen PW, Chang SH, Siao JY. An analysis of the damage tolerance of light aircraft landing gear. Trans. Can. Soc. Mech. Eng. 37:4 (2013) 1147-1159. doi: 10.1139/tcsme-2013-0097.
• [27] Diltemiz SF. Failure analysis of aircraft main landing gear cylinder support. Eng. Fail. Anal. 129 (2021) 1-10. doi: 10.1016/j. engfailanal.2021.105711.