Integrated synergistic design and performance evaluation of aerodynamic braking and aerodynamic lift control system for high-speed trains

Abstract

In response to the current contradictory situation where aerodynamic braking and lift control systems are studied independently, this paper proposes, for the first time, an integrated intelligent aerodynamic control equipment (IIACE) that combines an aerodynamic braking device (ABD) with an aerodynamic lift wing (ALW) and is compatible with high-speed trains operating at 400 km/h and above. IIACE features an integrated aerodynamic shape that merges aerodynamic braking plates with the lift wing. By leveraging intelligent mechanism transformations and attitude adjustments, the proposed IIACE fulfills the practical requirements for both aerodynamic braking and lift control operations. Research shows that when equipped with IIACE and operating in emergency braking, the braking distance of a high-speed train starting at 350 km/h can be reduced to under 4000 m, demonstrating a remarkably effective braking performance. In lift control mode, the designed minimum traction power for a high-speed train equipped with multiple IIACE units is calculated to be 13935 kW, with the increase of IIACE deployment sets. However, under the same speed conditions, rather than achieving energy savings and consumption reduction, it actually increases the traction burden of the train and decreases both train speed and traction quality under conditions of equal power output performance.

Keywords

high-speed train / aerodynamics / aerodynamic braking / aerodynamic lift wing / braking performance, traction characteristics

References

[1] Zhai W-m, Wang K-y, Cai C-biao. Fundamentals of vehicle–track coupled dynamics [J]. Vehicle System Dynamics, 2009, 47(11): 1349-1376

[2] Lu C-fang. Prospects for the development of China’s high-speed rail technology: Faster, smarter, greener [J]. Science and Technology Review, 2018, 36(6): 1 (in Chinese)

[3] Jiang Z-h, Shi J-r, Liu Z-ying. Greening the future via digitalization: Pro-environmental behaviors of the Chinese high-speed train industry in the digital context [J]. Research in Transportation Business & Management, 2025, 60: 101379

[4] Huang C-x, Zhou X-f, Chen Y, et al. . Multi-objective optimisation of wheel-rail adhesion for high-speed trains with aerodynamic lift wings [J]. Vehicle System Dynamics, 2025, 63(2): 375-397

[5] Cai Z-m, Xu C-q, Chang H-m, et al. . Life cycle greenhouse gas emissions and mitigation opportunities of high-speed train in China [J]. Journal of Cleaner Production, 2025, 504: 145422

[6] Tian H-qi. Research progress in railway safety under strong wind condition in China [J]. Journal of Central South University, 2010, 41(6): 2435-2443

[7] Xiong X-h, Liu L-y, Chen G, et al. . Effect of train heights on aerodynamic performance of high-speed trains under crosswind [J]. Journal of Central South University, 2025, 32(12): 5080-5104

[8] XIE Hong-tai, WANG Hong. Research on the safety of high-speed train operation under strong wind gust [J]. Journal of Vibration and Control, 2026: 10775463261456243. DOI: https://doi.org/10.1177/10775463261456243.

[9] Pang J-h, Zhou W, Shi C, et al. . Full-scale test of the effects of crosswinds on the operating posture of passenger trains [J]. Journal of Central South University, 2025, 32(12): 5105-5123

[10] Baker C J. A review of train aerodynamics Part 2 - Applications [J]. The Aeronautical Journal, 2014, 118(1202): 345-382

[11] García J, Muñoz-Paniagua J, Crespo A. Numerical study of the aerodynamics of a full scale train under turbulent wind conditions, including surface roughness effects [J]. Journal of Fluids and Structures, 2017, 74: 1-18

[12] TB/T 3503.5-2023 National Railway Administration of China. Railway application — aerodynamics — part 5: Requirements and test procedures for wind assessment [S], 2023, Beijing, China Railway Publishing House

[13] BS EN 14067-6: 2010 European Committee for Standardization. Railway applications: aerodynamics — Part 6: Requirements and test procedures for cross wind assessment [S], 2010, Brussels, European Committee for Standardization

[14] Han S, Zhang J, Tudball-Smith D, et al. . A novel passive flow control method employing vortex generators to suppress wake flow characteristics of a high-speed train: Mechanism and application [J]. Journal of Central South University, 2026, 33(1): 484-505

[15] Prasert P, Sun Z-x, Yao S-b, et al. . Investigation of aerodynamic shape optimization of cross-sectional body of high-speed train [J]. Journal of Central South University, 2025, 32(12): 4660-4682

[16] WANG Hong, XIE Hongtai. Research progress and key technology exploration on aerodynamic drag braking and lifting wing system development for high-speed trains [J/OL]. Journal of the China Railway Society, 2025: 1–21. CNKI preprint: https://link.cnki.net/urlid/11.2104.U.20250808.1412.003. (in Chinese)

[17] Kazumasa O, Masafumi Y. Development of aerodynamic brake of maglev vehicle for emergency use [J]. Railway Technical Research Institute (RTRI) Report, 1989, 3(11): 53-58

[18] Zuo J-y, Wu M-l, Tian C, et al. . Aerodynamic braking device for high-speed trains: Design, simulation and experiment [J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2014, 228(3): 260-270

[19] Takami H. Development of small-size and light-weight aerodynamic brake for high-speed railway [J]. Transactions of the JSME, 2020, 86(881): 19-295-19-00295 (in Japanese)

[20] Sawada K. Development of magnetically levitated high speed transport system in Japan [J]. IEEE Transactions on Magnetics, 1996, 32(4): 2230-2235

[21] Takami H, Maekawa H. Characteristics of a wind-actuated aerodynamic braking device for high-speed trains [J]. Journal of Physics: Conference Series, 2017, 822: 012061

[22] Yuhei N, Ryotaro K, Masayuki N, et al. . Auxiliary power unit of Series E956 high-speed experimental Shinkansen train for East Japan Railway Company [J]. Toyo Denki Review, 2021, 143: 10-19

[23] Takami H. Development of aerodynamic brake device for high-speed railway [J]. Quarterly Report of RTRI, 2020, 61(4): 267-272

[24] Xie H-t, Wang H. Aerodynamic characteristics and braking distance of high-speed trains equipped with aerodynamic braking devices [J]. Physics of Fluids, 2026, 38: 015133

[25] Zhang P-y, Gao G-j, Wang J-b, et al. . Numerical investigation on the impact of aerodynamic braking plates positioned at streamlined sections on the slipstream and wake flow of the high-speed train based on train-fixed reference frame [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2024, 254: 105920

[26] Li Y-f, Li T, Zhang J-ye. Effect of aerodynamic braking plates installed in Inter-car gap on aerodynamic characteristics of high-speed train [J]. Alexandria Engineering Journal, 2023, 71: 209-225

[27] Lv D-z, Niu J-q, Yao H-dong. Numerical study on transient aerodynamic characteristics of high-speed trains during the opening of braking plates based on dynamic-overset-grid technology [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2023, 233: 105299

[28] He P-h, Zhang J-y, Zhang L, et al. . Influence of anteroposterior symmetrical aero-wings on the aerodynamic performance of high-speed train [J]. Computer Modeling in Engineering & Sciences, 2024, 139(1): 937-953

[29] Chen J-z, Xu A, Liu T-h, et al. . On enhancing anti-overturning performance of a high-speed train with side airfoils in crosswinds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2025, 264: 106151

[30] Xiong X-h, et al. . Effect of wing height layout on the aerodynamic performance ofhigh-speed train [J]. International Journal of Numerical Methods for Heat & Fluid Flow, 2024, 34(10): 3731-3763

[31] Xiong X-h, Wang X-r, Zhang J, et al. . Effect of lift airfoils on characteristics of slipstream and wake flow of high-speed trains [J]. Journal of Traffic and Transportation Engineering, 2023, 23(3): 148-161 (in Chinese)

[32] Wang T-t, Huang D-f, Wang J-y, et al. . Study of aerodynamic characteristics of a high-speed train with wings moving through a tunnel [J]. Journal of Central South University, 2024, 31(3): 1003-1016

[33] Xie H-t, Wang H. Impact of aerodynamic lift wings on operational safety of high-speed trains through lift regulation and control in gusts [J]. Applied Mathematical Modelling, 2026, 154: 116686

[34] XIE Hong-tai, WANG Hong. Research on aerodynamic design and anti-crosswind characteristics of asymmetric wing span high-speed train aerodynamic lift wing [J]. Journal of Vibration and Control, 2025: 10775463251406565. DOI: https://doi.org/10.1177/10775463251406565.

[35] Xie H-t, Wang H. Aerodynamic design of lifting wing for high-speed trains [J]. Journal of Railway Science and Engineering, 2024, 21(12): 4885-4898

[36] Gao J-y, Zhang J, Ni Z-s, et al. . Aerodynamic characteristics of high-speed train roof lift wing combination [J]. Journal of Experiments in Fluid Mechanics, 2023, 37(1): 29-35 (in Chinese)

[37] Xie H-t, Wang H, Wang Y-f, et al. . Installation arrangement and operational attitude of the lift wing of a high-speed train in strong crosswind environment [J]. Journal of Vibration and Shock, 2025, 44(14): 245-256 264

[38] Niu J-q, Wang Y-m, Chen Z-w, et al. . Numerical study on the effect of braking plates on flow structure and vehicle and enhanced braking of vehicles inside and outside tunnels [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2021, 214: 104670

[39] Guo Y. Moving model analysis of the influence of geometric parameters on high-speed train’s aerodynamic effect [D], 2018, Jinan, Qilu University of Technology: 46-48 (in Chinese)

[40] Silverstein A. Scale effect on Clark Y airfoil characteristics from NACA full-scale wind-tunnel tests [R], 1935, Washington, National Advisory Committee for Aeronautics (NACA)

[41] Gudmundsson S. General aviation aircraft design: applied methods and procedures [M], 2014, Oxford, ButterworthHeinemann

[42] XIE Hong-tai, LTDWang H. Research on the aerodynamic characteristics of high-speed train equipped with aerodynamic braking plate under crosswind [J]. International Journal of Rail Transportation, 2026, 14(2): 261-293

[43] Tian H-qi. Train aerodynamics [M], 2007, Beijing, China Railway Publishing House (in Chinese)

[44] TG/01-2014 China State Railway Group Co., Ltd.. Railway technical management regulations (high-speed railway section) [S], 2014, Beijing, China Railway Publishing House (in Chinese)

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