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Journal articles on the topic 'Aircraft wake'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Pan, Weijun, Zhengyuan Wu, and Xiaolei Zhang. "Identification of Aircraft Wake Vortex Based on SVM." Mathematical Problems in Engineering 2020 (May 12, 2020): 1–8. http://dx.doi.org/10.1155/2020/9314164.

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The aircraft wake vortex has important influence on the operation of the airspace utilization ratio. Particularly, the identification of aircraft wake vortex using the pulsed Doppler lidar characteristics provides a new knowledge of wake turbulence separation standards. This paper develops an efficient pattern recognition-based method for identifying the aircraft wake vortex measured with the pulsed Doppler lidar. The proposed method is outlined in two stages. (i) First, a classification model based on support vector machine (SVM) is introduced to extract the radial velocity features in the wi

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2

Pan, Weijun, Yuanfei Leng, Haoran Yin, and Xiaolei Zhang. "Identification of Aircraft Wake Vortex Based on VGGNet." Wireless Communications and Mobile Computing 2022 (June 18, 2022): 1–10. http://dx.doi.org/10.1155/2022/1487854.

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The exploration of information for aircraft wake vortex enables us to obtain new knowledge of wake turbulence separation standards. Traditional manual methods cannot work satisfactorily for the identification of great number of wake vortex data with high accuracy. Fortunately, the LiDAR intensity data can be explained by integrating LiDAR products with the strategies of computer vision. To overcome the limitation of traditional manual methods, this paper is aimed at developing an automatic method to identify a given set of wake vortices from various aircrafts. The main innovation works are out

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3

Filippov, R. N., and E. A. Titova. "Effect of the Wake Vortex on the Mutual Safety of Winged Aircraft Following the Same Route." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (739) (October 2021): 65–73. http://dx.doi.org/10.18698/0536-1044-2021-10-65-73.

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The wake vortex consists mainly of two vortices, which are formed when the stream flows around the wings of an aircraft. A semi-empirical model of a stable vortex wake is proposed and analyzed. The model allows describing the velocity field in a vortex, depending on the characteristics of the aircraft generator, as well as assessing the effect of the vortex on the subsequent aircraft. Statistical modeling was carried out to determine the safe interval between the aircrafts for the characteristic sections of the trajectory. When moving over the sea, a straight-line route, a trajectory with turn

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Tomaszewski, Jessica M., Julie K. Lundquist, Matthew J. Churchfield, and Patrick J. Moriarty. "Do wind turbines pose roll hazards to light aircraft?" Wind Energy Science 3, no. 2 (2018): 833–43. http://dx.doi.org/10.5194/wes-3-833-2018.

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Abstract. Wind energy accounted for 5.6 % of all electricity generation in the United States in 2016. Much of this development has occurred in rural locations, where open spaces favorable for harnessing wind also serve general aviation airports. As such, nearly 40 % of all United States wind turbines exist within 10 km of a small airport. Wind turbines generate electricity by extracting momentum from the atmosphere, creating downwind wakes characterized by wind-speed deficits and increased turbulence. Recently, the concern that turbine wakes pose hazards for small aircraft has been used to lim

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5

Pan, Weijun, Yuming Luo, Shuai Han, and Hao Wang. "Large Eddy Simulation Research on the Evolution Mechanism of Aircraft Wake Influenced by Cubic Obstacle." Geofluids 2022 (June 24, 2022): 1–17. http://dx.doi.org/10.1155/2022/1324531.

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Aircraft wake is a kind of intense air movement, and the study of its generation, development, and dissipation law is of great significance to the flight safety. There are abundant researches on the evolution of aircraft wakes affected by weather and ground effects; however, there are few studies on the influence of a single obstacle on the evolution of aircraft wake. In this article, in order to explore the influence of a single obstacle on the evolution of aircraft wake, firstly, we develop a computational fluid dynamics-based method of simulation of aircraft wake affected by cubic obstacle

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6

Whitehouse, G. R., and R. E. Brown. "Modelling a helicopter rotor’s response to wake encounters." Aeronautical Journal 108, no. 1079 (2004): 15–26. http://dx.doi.org/10.1017/s0001924000004954.

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In recent years, various strategies for the concurrent operation of fixed-and rotary-wing aircraft have been proposed as a means of increasing airport capacity. Some of these strategies will increase the likelihood of encounters with the wakes of aircraft operating nearby. Several studies now exist where numerical simulations have been used to assess the impact of encounters with the wakes of large transport aircraft on the safety of helicopter operations under such conditions. This paper contrasts the predictions of several commonly-used numerical simulation techniques when each is used to mo

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Pan, Weijun, Zirui Yin, Yuming Luo, Anding Wang, and Yuanjing Huang. "Dynamic Aircraft Wake Separation Based on Velocity Change." Aerospace 9, no. 11 (2022): 633. http://dx.doi.org/10.3390/aerospace9110633.

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Traditional research on static wake-vortex reduction usually considers only the influence of external environmental factors, while ignoring the dynamic change in an aircraft’s flight state. In order to solve this problem, this paper proposes a method to reduce separation using dynamic wake information based on changes in flight velocity. Firstly, relying on the wake-vortex generation and dissipation model, the initial circulations and dissipation parameters of the wake vortex at different aircraft velocities are calculated. Then, the complete evolution process of the wake vortex generated by d

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8

Ma, Yuzhao, Jiangbei Zhao, Haoran Han, Pak-wai Chan, and Xinglong Xiong. "Aircraft Wake Recognition Based on Improved ParNet Convolutional Neural Network." Applied Sciences 13, no. 6 (2023): 3560. http://dx.doi.org/10.3390/app13063560.

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The occurrence of wake can pose a threat to the flight safety of aircraft and affect the runway capacity and airport operation efficiency. To effectively identify aircraft wake, this paper proposes a novel convolutional neural network (CNN) method of aircraft wake recognition based on the improved parallel network (ParNet). Depthwise separable convolution (DSC) was introduced into the ParNet to make the wake recognition model lightweight. In addition, the convolutional block attention module (CBAM) was introduced into the wake recognition model to improve the capacity of the model to extract t

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9

LU, Fei, Jian ZHANG, Erli ZHAO, and Jingjie TENG. "Study on Longitudinal Collision Risk of Closely Spaced Parallel Runways Paired Approach." Promet - Traffic&Transportation 37, no. 2 (2025): 404–20. https://doi.org/10.7307/ptt.v37i2.748.

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This study asserts that paired aircraft can withstand specific wake turbulence levels and explores the longitudinal collision risk in closely spaced parallel runway approaches. The goal is to enhance the safety margin of the paired approach and allow for more flexible implementation. Based on QAR data, a theoretical spacing model for paired aircraft and a probability distribution of acceleration error are established to facilitate the analysis of the actual spacing of paired aircraft. Wake turbulence attenuation is modelled using large eddy simulation, creating a vortex attenuation model. Draw

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10

Pan, Wei-Jun, Yuan-Fei Leng, Tian-Yi Wu, Ya-Xing Xu, and Xiao-Lei Zhang. "Conv-Wake: A Lightweight Framework for Aircraft Wake Recognition." Journal of Sensors 2022 (July 15, 2022): 1–11. http://dx.doi.org/10.1155/2022/3050507.

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The recognition of aircraft wake vortex can provide an indicator of early warning for civil aviation transportation safety. In this paper, several wake vortex recognition models based on deep learning and traditional machine learning were presented. Nonetheless, these models are not completely suitable owing to their dependence on the visualization of LiDAR data that yields the information loss of in reconstructing the behavior patterns of wake vortex. To tackle this problem, we proposed a lightweight deep learning framework to recognize aircraft wake vortex in the wind field of Shenzhen Baoan

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11

Roa, Julio, Antonio Trani, Junqi Hu, and Navid Mirmohammadsadeghi. "Simulation of Runway Operations with Application of Dynamic Wake Separations to Study Runway Limitations." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 12 (2020): 199–211. http://dx.doi.org/10.1177/0361198120953152.

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This paper presents an evaluation of runway operations at Chicago O’Hare International Airport to estimate the impact of proposed wake vortex separation including Recategorization Phase II and III dynamic separations. The evaluation uses a Monte Carlo simulation model that considers arrival and departure operations. The simulation accounts for static and dynamic wake vortex separations, aircraft fleet mix, runway occupancy times, aircraft approach speeds, aircraft wake circulation capacity, environmental conditions, and operational error buffers. Airport data considered for this analysis are b

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12

Gerz, Thomas, Frank Holzäpfel, and Denis Darracq. "Commercial aircraft wake vortices." Progress in Aerospace Sciences 38, no. 3 (2002): 181–208. http://dx.doi.org/10.1016/s0376-0421(02)00004-0.

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13

Golovnev, I. G., V. V. Vyshinsky, A. I. Zhelannikov, and K. V. Lapshin. "DESIGN CONCEPTS OF AN ONBOARD EARLY WARNING SYSTEM OF PILOT ABOUT ENTERING WAKE VORTICES FROM ANOTHER AIRCRAFT." Civil Aviation High TECHNOLOGIES 21, no. 4 (2018): 84–95. http://dx.doi.org/10.26467/2079-0619-2018-21-4-84-95.

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An airborne aircraft forms a wake vortex behind itself dangerous for other entering it aircraft both piloted and unmanned. Wake vortex intensity depends on parameters of the aircraft creating it, so the greater the aircraft mass is, the higher its impact on other aircraft is. It is not possible to register visually the wake vortex, since in fact it is invisible. Introduction of wide-body aircraft like A380 into service leads to the revision of separation rules with the aim to increase admissible distance between aircraft. There is a quite demonstrative case when Challenger 604 got into the wak

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14

Joshi, Arnav, Mustafa M. Rahman, and Jean-Pierre Hickey. "Recent Advances in Passive Acoustic Localization Methods via Aircraft and Wake Vortex Aeroacoustics." Fluids 7, no. 7 (2022): 218. http://dx.doi.org/10.3390/fluids7070218.

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Passive acoustic aircraft and wake localization methods rely on the noise emission from aircraft and their wakes for detection, tracking, and characterization. This paper takes a holistic approach to passive acoustic methods and first presents a systematic bibliographic review of aeroacoustic noise of aircraft and drones, followed by a summary of sound generation of wing tip vortices. The propagation of the sound through the atmosphere is then summarized. Passive acoustic localization techniques utilize an array of microphones along with the known character of the aeroacoustic noise source to

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15

Xu, Peimin, Yueyue Yang, Jie Zhou, and Guiyu Zhou. "Aerodynamic Characteristic Analysis of V-22 Tilt-Rotor Aircraft in Hover." Journal of Physics: Conference Series 2280, no. 1 (2022): 012020. http://dx.doi.org/10.1088/1742-6596/2280/1/012020.

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Abstract Tilt-rotor aircraft combines the vertical take-off and landing function of helicopters with the high-speed cruise function of fixed-wing aircraft, which has given rise to extensive attention in the aviation field, but the complex aerodynamic characteristics of the rotor flow field and the interference of rotor/fuselage have always been tough problems. In recent years, the continuous development of high-performance computer and the combination of high-precision CFD method and dynamic overset grid technology, make it possible to perform fine numerical simulation of tilt-rotor aircraft’s

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16

Wang, Hexiang, Junqiang Wu, Qiuting Guo, et al. "Study on the Influence of a Powered Nacelle on the Wake Vortex Characteristics of Wide-Body Aircraft." Aerospace 11, no. 6 (2024): 452. http://dx.doi.org/10.3390/aerospace11060452.

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The aircraft wake vortex is an important factor affecting flight safety; as an important part of the aircraft, the powered nacelle will inevitably have an important impact on the aircraft wake vortex, so it is of great practical significance to research it. The present study focused on the numerical simulation of the wake flow of large aircraft (as the front aircraft) and the comparative analysis of the influence of engine jets on the wake flow. In order to meet the accuracy requirements and control the consumption of computing resources, LES and RANS methods were compared, and the RANS method

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17

Kong, Jian Guo. "Safety Evaluation of A380 Wake Turbulence Separation." Applied Mechanics and Materials 278-280 (January 2013): 31–34. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.31.

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CAAC (Civil Aviation Administration of China) set a standard on A380 wake turbulence separation right after China Southern Airlines brought in Airbus A380 in 2001.This paper considers from the possibility of the latter aircraft wake turbulence influencing the preceding one, which means the wake turbulence risk, makes safety evaluation on the wake turbulence separation standard of the preceding aircraft as A380, and the latter one as heavy type, medium type and light type, based on the safety target level that ICAO (International Civil Aviation Organization) authorized. Each type chooses a typi

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18

Luo, Haotian, Weijun Pan, Yidi Wang, and Yuming Luo. "A330-300 Wake Encounter by ARJ21 Aircraft." Aerospace 11, no. 2 (2024): 144. http://dx.doi.org/10.3390/aerospace11020144.

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Today, aviation has grown significantly in importance. However, the challenge of flight delays has become increasingly severe due to the need for safe separation between aircraft to mitigate wake turbulence effects. The primary emphasis of this investigation resides in elucidating the evolutionary attributes of wake vortices in homogeneous isotropy turbulence. The large eddy simulation (LES) method is used to scrutinize the dynamic evolution of wake vortices engendered by an A333 aircraft in the atmospheric milieu and assess its ramifications on the ARJ21 aircraft. The research endeavor commen

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19

Rogers, Jonathan D. "Experimental evaluation of wind turbine wake turbulence impacts on a general aviation aircraft." Wind Energy Science 9, no. 9 (2024): 1849–68. http://dx.doi.org/10.5194/wes-9-1849-2024.

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Abstract. Continued development of wind farms near populated areas has led to rising concerns about the potential risk posed to general aviation aircraft when flying through wind turbine wakes. There is an absence of experimental flight test data available with which to assess this potential risk. This paper presents the results of an instrumented flight experiment in which a general aviation aircraft was flown through the wake of a utility-scale wind turbine at an operating wind farm. Wake passes were flown at different downwind distances from the turbine, and data were collected on the orien

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20

Pan, Weijun, Jingkai Wang, Yaxing Xu, Qianlan Jiang, and Yuming Luo. "Approach and Landing Aircraft Wake Encounter Risk Based on Reynolds-Averaged Navier-Stokes Numerical Simulation." International Journal of Aerospace Engineering 2022 (September 5, 2022): 1–24. http://dx.doi.org/10.1155/2022/9126755.

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In order to shorten the wake safe separation, numerical simulation technology with aerodynamic response models and strip models have been combined to calculate wake hazard zone. As a realistic case, a medium aircraft ARJ21 following a heavy aircraft A330-200 is considered, and the Reynolds-averaged Navier-Stokes (RANS) method is used to explore the wake vortex evolution process of the leading aircraft at the decision height. A strip algorithm is proposed to calculate the rolling moment coefficient and overload increment of the ARJ21 after encountering the wake of the front aircraft in the thre

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21

Pan, Wei Jun, and Jia Yu Li. "Flight Separation Research Based on the Aircraft Wake." Applied Mechanics and Materials 253-255 (December 2012): 2201–7. http://dx.doi.org/10.4028/www.scientific.net/amm.253-255.2201.

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Improving airspace and runway utilization is the key to reducing flight delays with the rapid development of the air transport industry. Current flight separation standards generally take excessive interval margin, resulting in unnecessary waste of airspace resources and runway resources. Wake accidents still happended even with strictly wake separation standards compliance, which is mainly due to the imperfect separation standards affected by the wake complexity and modeling imperfections. Refering to Chinese and international main wake models, we propose to improve the existing wake standard

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22

Shariff, Karim. "Making Aircraft Vortices Visible to Radar by Spraying Water into the Wake." Journal of Atmospheric and Oceanic Technology 33, no. 12 (2016): 2615–38. http://dx.doi.org/10.1175/jtech-d-16-0066.1.

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AbstractAircraft trailing vortices pose a danger to following aircraft during takeoff and landing. This necessitates spacing rules, based on aircraft type, to be enforced during approach in instrument flight regulation (IFR) conditions; this can limit airport capacity. To help choose aircraft spacing based on the actual location and strength of the wake, it is proposed that wake vortices can be detected using conventional ground-based precipitation and cloud radars. This is enabled by spraying a small quantity of water into the wake from near the wing. The vortex strength is revealed by the Do

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23

Ma, Yuzhao, Xu Tang, Yaxin Shi, and Pak-Wai Chan. "YOLOv8n–CBAM–EfficientNetV2 Model for Aircraft Wake Recognition." Applied Sciences 14, no. 17 (2024): 7754. http://dx.doi.org/10.3390/app14177754.

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In the study of aircraft wake target detection, as the wake evolves and develops, the detection area of the LiDAR often shows the presence of two distinct vortices, one on each side. Sometimes, only a single wake vortex may be present. This can lead to a reduction in the accuracy of wake detection and an increased likelihood of missed detections, which may have a significant impact on the flight safety. Hence, we propose an algorithm based on the YOLOv8n–CBAM–EfficientNetV2 model for wake detection. The algorithm incorporates the lightweight network of EfficientNetV2 and the Convolutional Bloc

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24

Campos, L. M. B. C., and J. M. G. Marques. "On the compensation and damping of roll induced by wake vortices." Aeronautical Journal 118, no. 1207 (2014): 1039–61. http://dx.doi.org/10.1017/s0001924000009738.

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Abstract The effect of the wake of a leading aircraft on a following aircraft is demonstrated by calculating the rolling motion consisting of three terms: (i) the free rolling motion due to initial bank angle and roll rate; (ii) the forced wake response due the rolling moment induced by the wake encounter; (iii) the forced control response due to aileron deflection to counter the wake vortex effects. It is shown that in the absence of control action, the roll rate of the following aircraft goes through a peak, and then decays, leading to a constant asymptotic bank angle; the latter is a measur

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25

Pan, Weijun, Yanqiang Jiang, and Yuqin Zhang. "Simulation Study of the Effect of Atmospheric Stratification on Aircraft Wake Vortex Encounter." Sustainability 15, no. 8 (2023): 6391. http://dx.doi.org/10.3390/su15086391.

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The atmospheric environment is an important factor affecting aircraft wake vortex decay and wake separation. In this paper, numerical calculations and strip modeling are combined to complete an analysis of wake encounter under three atmospheric stratifications expressed in Brunt–Väisälä (BV) frequencies. The SST k-ω turbulence model was chosen for the numerical simulation to complete the evolution of the wake vortex field of the A330 aircraft. The A320 and ERJ190 were selected as the aircraft for wake encounter analysis. The dimensionless roll moment coefficient (RMC) was selected as the indic

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26

Grubišić, Vanda, Johannes Sachsperger, and Rui M. A. Caldeira. "Atmospheric Wake of Madeira: First Aerial Observations and Numerical Simulations." Journal of the Atmospheric Sciences 72, no. 12 (2015): 4755–76. http://dx.doi.org/10.1175/jas-d-14-0251.1.

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Abstract The island of Madeira is well known for giving rise to atmospheric wakes. Strong and unsteady atmospheric wakes, resembling a von Kármán vortex street, are frequently observed in satellite images leeward of Madeira, especially during summer months, when conditions favoring the formation of atmospheric wakes occur frequently under the influence of the Azores high. Reported here is the analysis of the first airborne measurements of Madeira’s wake collected during the 2010 Island-induced Wake (I-WAKE) campaign. High-resolution in situ and remote sensing data were collected in the I-WAKE

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27

Shen, Chun, Jianbing Li, and Hang Gao. "Two Parameter-Retrieval Algorithms of Aircraft Wake Vortex with Doppler Lidar in Clear Air." EPJ Web of Conferences 237 (2020): 08024. http://dx.doi.org/10.1051/epjconf/202023708024.

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Aircraft wake is a pair of strong counter-rotating vortices generated behind an aircraft, which might be very hazardous to a flowing aircraft and the detection of which has attracted much attention in aviation safety field. This conference paper introduces two parameter-retrieval algorithms, i.e., Optimization method and Max-min method. They have been integrated into a toolbox and can retrieve the parameters of wake vortex efficiently and robustly.

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28

Ivanov, S. V. "Spectroscopic detection of aircraft wake gases." Physics of Wave Phenomena 15, no. 1 (2007): 57–65. http://dx.doi.org/10.3103/s1541308x07010049.

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Hemati, Maziar S., Jeff D. Eldredge, and Jason L. Speyer. "Wake Sensing for Aircraft Formation Flight." Journal of Guidance, Control, and Dynamics 37, no. 2 (2014): 513–24. http://dx.doi.org/10.2514/1.61114.

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Breitsamter, C. "Wake vortex characteristics of transport aircraft." Progress in Aerospace Sciences 47, no. 2 (2011): 89–134. http://dx.doi.org/10.1016/j.paerosci.2010.09.002.

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31

Zhelannikov, A. I. "Features of vortex trace propagation for aircraft with propellers." Civil Aviation High Technologies 26, no. 3 (2023): 103–13. http://dx.doi.org/10.26467/2079-0619-2023-26-3-103-113.

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The article presents the results of a study of the characteristics of the wake vortex of aircraft with turboprop engines. Using the example of the An-12 aircraft, it is shown that rotating propellers make a noticeable contribution to the propagation of the vortex trail behind the aircraft. This is proved by some studies, as well as numerous observations. It also describes a technique for studying the wake vortex of aircraft with propellers. The method is based on the method of discrete vortices. The relevance of such studies is due to the growing interest of carrier companies in aircraft with

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32

Deng, Leilei, Weijun Pan, Tian Luan, Chen Zhang, and Yuanfei Leng. "Rapid Aircraft Wake Vortex Identification Model Based on Optimized Image Object Recognition Networks." Aerospace 11, no. 10 (2024): 840. http://dx.doi.org/10.3390/aerospace11100840.

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Wake vortices generated by aircraft during near-ground operations have a significant impact on airport safety during takeoffs and landings. Identifying wake vortices in complex airspaces assists air traffic controllers in making informed decisions, ensuring the safety of aircraft operations at airports, and enhancing the intelligence level of air traffic control. Unlike traditional image recognition, identifying wake vortices using airborne LiDAR data demands a higher level of accuracy. This study proposes the IRSN-WAKE network by optimizing the Inception-ResNet-v2 network. To improve the mode

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Campos, L. M. B. C., and J. M. G. Marques. "On an analytical model of wake vortex separation of aircraft." Aeronautical Journal 120, no. 1232 (2016): 1534–65. http://dx.doi.org/10.1017/aer.2016.89.

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ABSTRACTA theory is presented on the effect of wake turbulence of a leading aircraft on the roll stability of a following aircraft, leading to a simple formula for the safe separation distance between the two aircraft that provides estimates of aircraft separation distances comparable to existing empirical regulations, based on experience. The formula includes the effects of flight and atmospheric conditions, and the characteristics of the leading and following aircraft; it applies to similar or dissimilar aircraft, and it indicates the parameters and conditions leading to increasing or decrea

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Yuan, Jianhui, Jixin Liu, Changcheng Li, Zheng Zhao, and Huan Cao. "Calculation and analysis of the hazardous area of Three-Dimensional aircraft wake vortices under crosswind conditions." Journal of Physics: Conference Series 2965, no. 1 (2025): 012049. https://doi.org/10.1088/1742-6596/2965/1/012049.

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Abstract Rapid and accurate simulation of aircraft wake evolution under crosswind conditions and measurement of wake vortex encounter safety are crucial for identifying hazard zones and reducing flight intervals. Based on numerical simulation results, this paper constructs a three-dimensional wake vortex danger zone based on aircraft pairing under crosswind conditions, accurately calculating wake vortex dissipation and danger zones. The H-B model initializes the wake vortex velocity field, and the SST k − ω turbulence model in Fluent software simulates wake vortex evolution under different cro

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Rubin, William L. "The Generation and Detection of Sound Emitted by Aircraft Wake Vortices in Ground Effect." Journal of Atmospheric and Oceanic Technology 22, no. 5 (2005): 543–54. http://dx.doi.org/10.1175/jtech1718.1.

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Abstract Sound recorded by the author in March 2002 at JFK International Airport shows that wake vortices in ground effect emit infrasound that is 1) more than 40 dB stronger than audible wake vortex sound; 2) substantially stronger than the infrasound component of wind noise and airport noise; and 3) comparable to, and often stronger than, the infrasound component of aircraft noise. Spectra and time plots of the magnitude of wake-vortex-generated sound are presented for aircraft landing on JFK runway 31R.

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Fu, Jiawei, Ruifan Hu, Hong Wang, Ke Xu, and Shuling Tian. "Delayed Detached-Eddy Simulations of Aerodynamic Variability During Carrier-Based Aircraft Landing with a Domain Precursor Inflow Method." Journal of Marine Science and Engineering 13, no. 3 (2025): 498. https://doi.org/10.3390/jmse13030498.

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Flight tests and wind tunnel experiments face difficulties in investigating the impact of aircraft carrier air-wake on the landing process. Meanwhile, numerical methods generally exhibit low overall computational efficiency in solving such problems. To address the computational challenges posed by the disparate spatiotemporal scales of the ship air-wake and aircraft motion, a domain precursor inflow method is developed to efficiently generate unsteady inflow boundary conditions from precomputed full-domain air-wake simulations. This study investigates the aerodynamic variability of carrier-bas

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Gayet, J. F., V. Shcherbakov, C. Voigt, et al. "The evolution of microphysical and optical properties of an A380 contrail in the vortex phase." Atmospheric Chemistry and Physics 12, no. 14 (2012): 6629–43. http://dx.doi.org/10.5194/acp-12-6629-2012.

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Abstract. A contrail from a large-body A380 aircraft at cruise in the humid upper troposphere has been probed with in-situ instruments onboard the DLR research aircraft Falcon. The contrail was sampled during 700 s measurement time at contrail ages of about 1–4 min. The contrail was in the vortex regime during which the primary wake vortices were sinking 270 m below the A380 flight level while the secondary wake remained above. Contrail properties were sampled separately in the primary wake at 90 and 115 s contrail age and nearly continously in the secondary wake at contrail ages from 70 s to

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38

Pinto, Joseph Ciano, Siva Marimuthu, Parvathy Rajendran, Manikandan Natarajan, and Rajadurai Murugesan. "Computational Analysis of Blended Winglet Designs to Reduce the Wake Turbulence on the Airbus A380 Wingtip." Eng 6, no. 4 (2025): 68. https://doi.org/10.3390/eng6040068.

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The aviation sector faces a significant challenge in balancing the rising demand for air travel with the need to reduce its environmental impact. Because air travel accounts for approximately 2.5% of global carbon emissions, there is a need to find sustainable solutions to reduce its environmental impact. Improving aerodynamic performance is a crucial area for reducing fuel consumption and emissions. Nowadays, more focus is given to commercial aviation, which contributes to global aviation emissions. The A380 is the largest passenger aircraft in the world at the moment. It was observed in real

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Rossow, Vernon J. "Wake hazard alleviation associated with roll oscillations of wake-generating aircraft." Journal of Aircraft 23, no. 6 (1986): 484–91. http://dx.doi.org/10.2514/3.45333.

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Rojas, Jose I., Marc Melgosa, and Xavier Prats. "Sensitivity Analysis of Maximum Circulation of Wake Vortex Encountered by En-Route Aircraft." Aerospace 8, no. 7 (2021): 194. http://dx.doi.org/10.3390/aerospace8070194.

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Wake vortex encounters (WVE) can pose significant hazard for en-route aircraft. We studied the sensitivity of wake vortex (WV) circulation and decay to aircraft mass, altitude, velocity, density, time of catastrophic wake demise event, eddy dissipation rate, wing span, span-wise load factor, and WV core radius. Then, a tool was developed to compute circulations of WV generated/encountered by aircraft en-route, while disregarding unrealistic operational conditions. A comprehensive study is presented for most aircraft in the Base of Aircraft Data version 4.1 for different masses, altitudes, spee

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Liu, Zhongxun, Nicolas Jeannin, Francois Vincent, and Xuesong Wang. "Modeling the Radar Signature of Raindrops in Aircraft Wake Vortices." Journal of Atmospheric and Oceanic Technology 30, no. 3 (2013): 470–84. http://dx.doi.org/10.1175/jtech-d-11-00220.1.

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Abstract The present work is dedicated to the modeling and simulation of the radar signature of raindrops within wake vortices. This is achieved through the computation of the equation of raindrop motion within the wake vortex flow. Based on the inhomogeneous distribution of raindrops within wake vortices, the radar echo model is computed for raindrops in a given resolution cell. Simulated Doppler radar signatures of raindrops within wake vortices are shown to be a potential criterion for identifying wake vortex hazards in air traffic control. The dependence of the radar signature on various p

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He, Xin, Yilong Ma, Hong Yang, and Yaqing Chen. "Modeling and Simulation of Wake Safety Interval for Paired Approach Based on CFD." Journal of Advanced Transportation 2021 (December 30, 2021): 1–10. http://dx.doi.org/10.1155/2021/7891475.

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In order to relieve the stress caused by the surge of flight flow, Closely Spaced Parallel Runways (CSPRs) have been built in many hub airports, and a paired approach mode has been applied to CSPRs in some countries. This paper proposes a method for optimizing the wake separation between aircrafts which utilizes a paired approach, aiming at reducing longitudinal separation by using computational fluid dynamics technology. Firstly, the model of the wake vortex field of the paired lead aircraft is constructed. Secondly, the numerical simulation preparation for the characteristics of the wake vor

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Vechtel, D. "In-flight simulation of wake encounters using deformed vortices." Aeronautical Journal 117, no. 1196 (2013): 997–1018. http://dx.doi.org/10.1017/s0001924000008654.

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Abstract During the decay process the shape of wake vortices changes significantly which has an influence on the encounter characteristics, hence on the encounter hazard. In order to evaluate the influence of vortex deformation on the wake encounter hazard, in-flight simulations with the DLR research aircraft ATTAS were carried out. For a realistic analysis of wake encounters flow fields of matured vortices were generated with large eddy simulations. These flow fields were used for the determination of histories of induced forces and moments acting on the wake encountering aircraft. The force

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Yin, Hai Tao, Xin Min Wang, Wen Chao Li, and Rong Xie. "Study of Disturbances Model on Carrier-Based Aircraft Landing Process." Applied Mechanics and Materials 321-324 (June 2013): 824–28. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.824.

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The disturbances in the landing process of carrier-based aircraft include deck movement and ship wake. To guarantee the security of landing process, the simulation and model are necessary for the disturbances, and the deck movement and ship wake should be analyzed as well. On the basis of analysis of disturbances, the disturbances can be catalogued into two types: deck movement and ship wake. Combining with the relevant instructions in the American Army Standard, the mathematical model of each disturbance is established. The simulations of the deck movement and ship wake are also shown in this

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Bobylev, Anatoliy V., Victor V. Vyshinsky, George G. Soudakov, and Vassiliy A. Yaroshevsky. "Aircraft Vortex Wake and Flight Safety Problems." Journal of Aircraft 47, no. 2 (2010): 663–74. http://dx.doi.org/10.2514/1.46432.

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Wang, Y., M. White, and G. N. Barakos. "Wind-Turbine Wake Encounter by Light Aircraft." Journal of Aircraft 54, no. 1 (2017): 367–70. http://dx.doi.org/10.2514/1.c033870.

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Sarpkaya, Turgut. "Decay of Wake Vortices of Large Aircraft." AIAA Journal 36, no. 9 (1998): 1671–79. http://dx.doi.org/10.2514/2.570.

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Rodenhiser, Rebecca J., William W. Durgin, and Hamid Johari. "Ultrasonic Method for Aircraft Wake Vortex Detection." Journal of Aircraft 44, no. 3 (2007): 726–32. http://dx.doi.org/10.2514/1.25060.

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Weijun, Pan, Duan Yingjie, Zhang Qiang, Tang Jiahao, and Zhou Jun. "Deep Learning for Aircraft Wake Vortex Identification." IOP Conference Series: Materials Science and Engineering 685 (November 22, 2019): 012015. http://dx.doi.org/10.1088/1757-899x/685/1/012015.

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Rubin, William L. "Radar–Acoustic Detection of Aircraft Wake Vortices." Journal of Atmospheric and Oceanic Technology 17, no. 8 (2000): 1058–65. http://dx.doi.org/10.1175/1520-0426(2000)017<1058:radoaw>2.0.co;2.

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