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Huawei Sun, Anran Ju, Wentian Chang, Jingfei Liu, Jiayi Liu and Hanbing Sun
Assessing the safety of amphibious aircraft hinges significantly on two key factors: wave-added resistance and motion stability during takeoff and landing on water surfaces. To tackle this, we employed the Reynolds-averaged Navier?Stokes (RANS) equations...
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Boqian Ji, Jun Huang, Xiaoqiang Lu, Yacong Wu and Jingjiang Liu
The wing aerodynamic shape optimization is a typical high-dimensional problem with numerous independent design variables. Researching methods to reduce the dimensionality of optimization from the perspective of aerodynamic characteristics is necessary. O...
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Rejish Jesudasan, Ardeshir Hanifi and Raffaello Mariani
Wing-in-Ground (WIG) effect aircraft are gaining attention for their potential in reducing environmental impact. However, optimising wing planforms based solely on aerodynamics might improve performance while compromising static height stability of WIG a...
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Andrea Aprovitola, Oleksandr Dyblenko, Giuseppe Pezzella and Antonio Viviani
The recent improvement of technology readiness level in aeronautics and the renewed demand for faster transportation are driving the rebirth of supersonic flight for commercial aviation. However, the design of a future supersonic aircraft is still very c...
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Luís M. B. C. Campos and Joaquim M. G. Marques
The coupling of the longitudinal and lateral stability modes of an aeroplane is considered in two cases: (i) weak coupling, when the changes in the frequency and damping of the phugoid, short period, dutch roll, and helical modes are small, i.e., the squ...
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Nadhie Juliawan, Hyoung-Seog Chung, Jae-Woo Lee and Sangho Kim
This paper focuses on estimating dynamic stability derivatives using a computational fluid dynamics (CFD)-based force oscillation method, and on separating the coupled dynamic derivatives terms obtained from the method. A transient RANS solver is used to...
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Jin Zou, Shijie Lu, Hanbing Sun, Liru Zan and Jiuyang Cang
In this study, a high-speed planing trimaran hull form is designed, and the effects of different displacements and gravity longitudinal layouts on the performance of the trimaran planing hull in calm water are experimentally investigated in the towing ta...
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A. O. Shvets
Pág. 119 - 137
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Levan Glonti, Temur Enik, Vladimir Kekelidze, Alexander Kolesnikov, Dmitry Madigozhin, Natalia Molokanova, Sergey Movchan, Yuri Potrebenikov and Sergey Shkarovskiy
For the development of charged particle detectors based on straw tubes operating in vacuum, a special measurement technique is required for the evaluation of their mechanical properties. A summary of the known equations that govern straw behavior under i...
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Levan Glonti, Temur Enik, Vladimir Kekelidze, Alexander Kolesnikov, Dmitry Madigozhin, Natalia Molokanova, Sergey Movchan, Yuri Potrebenikov and Sergey Shkarovskiy
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Tanmay K. Mandal and Yu Gu
This paper reports the results of a Pilot-Induced Oscillation (PIO) and human pilot control characterization study performed using flight data collected with a Remotely Controlled (R/C) unmanned research aircraft. The study was carried out on the longitu...
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Liang Gao, Yanhe Zhu, Yubin Liu, Junming Zhang, Benshan Liu and Jie Zhao
Morphing aircraft can alter their aerodynamic configuration to obtain multitask adaptability and improve flight performance. In this paper, we apply the variable sweep concept on a tandem-wing micro aerial vehicle (MAV) for multitask adaptability, the tw...
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Estela Barroso Barderas, Rafael Bardera Mora, Ángel Antonio Rodriguez-Sevillano and Juan Carlos Matías García
Bird tails play a key role in aerodynamics and flight stability. They produce extra lift for takeoff and landing maneuvers, enhance wing functions and maintain stability during flight (keeping the bird from yawing, rolling and pitching, or otherwise losi...
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José D. Hoyos, Camilo Echavarría, Juan P. Alvarado, Gustavo Suárez, Juliana A. Niño and Jorge I. García
An aero-structural algorithm to optimize a flying wing in cruise conditions for preliminary design is developed using two-way interaction between the structure and aerodynamics. A particle swarm routine is employed to solve the multi-objective optimizati...
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Luís M. B. C. Campos and Joaquim M. G. Marques
The variation in stability derivatives with airspeed and angles of attack and sideslip is determined using only the dependence of the aerodynamic forces and moments on the modulus and direction of the velocity. Analytic extrapolation factors are obtained...
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A. O. Shvets,K. I. Zhelieznov,A. S. Akulov,O. M. Zabolotnyi,E. V. Chabaniuk
Pág. 180 - 192
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A. O. Shvets,K. I. Zhelieznov,A. S. Akulov,O. M. Zabolotnyi,E. V. Chabaniuk
Pág. 175 - 189
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Ivan Kostic, Aleksandar Simonovic, Olivera Kostic, Du?an Ivkovic and Dragoljub Tanovic
This paper presents the second stage of a tandem fixed-wing unmanned aerial vehicle (UAV) aerodynamic development. In the initial stage, the UAV was optimized by analyzing its characteristics only in symmetrical flight conditions. Posted requirements wer...
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Jin Zhang, Li Cheng, Yajun Wang and Chenjuan Jiang
Stratification and mixing of the water column is an important dynamic process in the estuary, which plays a significant role in the estuarine circulation, mass transport and energy exchange. Based on the multi-station synchronous observation data from 26...
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Spyridon Antoniou, Stavros Kapsalis, Pericles Panagiotou and Kyros Yakinthos
The current study investigated the effect of leading-edge slats on the longitudinal stability at high angles of attack of a Blended-Wing-Body (BWB) Unmanned Air Vehicle (UAV). Using a Design of Experiments (DOE) approach and, specifically, the Taguchi me...
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