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Journal articles on the topic 'BWB'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

van Dommelen, Jorrit, and Roelof Vos. "Conceptual design and analysis of blended-wing-body aircraft." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 228, no. 13 (2014): 2452–74. http://dx.doi.org/10.1177/0954410013518696.

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Due to the unconventional nature of the blended wing body (BWB) no off-the-shelf software package exists for its conceptual design. This study details a first step towards the implementation of traditional and BWB-specific design and analysis methods into a software tool to enable preliminary sizing of a BWB. The tool is able to generate and analyze different BWB configurations on a conceptual level. This paper investigates three different BWB configurations. The first configuration is an aft-swept BWB with aft-mounted engines, the second configuration is an aft-swept BWB with wing-mounted eng

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Du, Xiaoxu, Xin Liu, and Yani Song. "Analysis of the Steady-Stream Active Flow Control for the Blended-Winged-Body Underwater Glider." Journal of Marine Science and Engineering 11, no. 7 (2023): 1344. http://dx.doi.org/10.3390/jmse11071344.

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The BWB-UG is a glider with a smooth and integrated fuselage and wing. Its lift-to-drag properties are some of the most significant factors affecting its performance. In order to improve its hydrodynamic characteristics, the method of steady-stream active flow control (SS-AFC) is proposed. The computational fluid dynamics method is used to numerically investigate the SS-AFC of the BWB-UG. The mechanism of the SS-AFC effect on the lift-to-drag characteristics is revealed from the flow field aspect. The flow field of the BWB-UG before and after installing the SS-AFC was simulated using FLUENT. T

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3

Kong, Chunli, Caiping Duan, Shunzhi Zhang, Rui Liu, Yuanlin Sun, and Sumei Zhou. "Effects of Co-Modification by Extrusion and Enzymatic Hydrolysis on Physicochemical Properties of Black Wheat Bran and Its Prebiotic Potential." Foods 12, no. 12 (2023): 2367. http://dx.doi.org/10.3390/foods12122367.

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Black wheat bran (BWB) is an important source of dietary fiber (DF) and phenolic compounds and has stronger nutritional advantages than ordinary WB. However, the low content of soluble dietary fiber (SDF) negatively influences its physicochemical properties and nutritive functions. To obtain a higher content of SDF in BWB, we evaluated the impact of co-modification by extrusion and enzymes (cellulase, xylanase, high-temperature α-amylase, and acid protease) on water extractable arabinoxylan (WEAX) in BWB. An optimized co-modification method was obtained through single-factor and orthogonal exp

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Durmus, Seyhun. "A key design parameter proposal for aerodynamically efficient subsonic blended wing body." Aircraft Engineering and Aerospace Technology 94, no. 3 (2021): 473–79. http://dx.doi.org/10.1108/aeat-07-2021-0218.

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Purpose Blended wing body (BWB) is a very advantageous design in terms of low fuel consumption, low emission and low noise levels. Because of these advantages, the BWB is a candidate to become the commercial passenger aircraft of the future by providing a paradigm shift in conventional designs. This paper aims to propose a key design parameter for wing sizing of subsonic BWB and a performance parameter for calculating the lift/drag ratio values of BWBs. Design/methodology/approach The parameter proposed in the study is based on the square/cube law, that is, the idea that the wetted area is pro

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MV, Midhun, Partha Mondal, Pawan Kumar Karn, and Priyank Kumar. "Aerodynamic Investigation of Blended Wing Body Configuration." Defence Science Journal 73, no. 3 (2023): 283–92. http://dx.doi.org/10.14429/dsj.73.17735.

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 A blended wing body (BWB) configuration is an unconventional aircraft design in which the wing and fuselage are blended to form an aircraft. This design concept has inherent higher aerodynamic efficiency, environmental benefits and capacities. These advantages make the BWB configuration a feasible concept for commercial transport aircraft. In the present work, a 3-D BWB model is designed in SolidWorks and fabricated using a 3D printer. The numerical and experimental analyses are carried out with this BWB geometry. Aerodynamic characteristics and flow features obtained from the open-sour

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Li, Jinglu, Peng Wang, Xu Chen, and Huachao Dong. "Shape Optimization of Blended-Wing-Body Underwater Gliders Based on Free-Form Deformation." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 3 (2020): 459–64. http://dx.doi.org/10.1051/jnwpu/20203830459.

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Currently developed underwater gliders can be roughly divided into the two types:traditional configuration and unconventional configuration. As a type of underwater gliders with unconventional configuration, a blended-wing-body (BWB) underwater glider has better fluid dynamic performances because of its unique shape. However, it is difficult to design the shape of the BWB underwater glider that has excellent hydrodynamic performances. Therefore, it is of great significance to optimize its shape, which this paper carries out by using the free-form deformation (FFD). The complete and automatic s

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Zhang, Yong Jie, and Bin Tuan Wang. "Non-Cylindrical Fuselage Structural Optimization of BWB Civil Aircraft." Key Engineering Materials 474-476 (April 2011): 1736–39. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1736.

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Blended-Wing-Body (BWB) civil aircraft possesses so light structure, high lift-drag ratio and low fuel burn that it has been an important topic of future civil aircraft. But internal pressure causes large bending stress instead of skin-membrane stress in BWB non-cylindrical fuselage. For 150 seats BWB fuselage, a composite 3-bay fuselage model is analyzed and two improved configurations of braced fuselage derivatives are designed in this paper. By optimization analysis, the optimized non-cylindrical fuselage structures are obtained in low bending stress and deformation condition, and optimized

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Nuryono, Nuryono, Bambang Purnomo, Agus Istiawan, et al. "Characterization and Rheological Improvement of Boyolali White Bentonite with Soda Ash and Carboxy Methyl Cellulose." Key Engineering Materials 920 (May 16, 2022): 137–45. http://dx.doi.org/10.4028/p-3n42ah.

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The main objective of this study was to evaluate the effect of soda ash (SA) and carboxy methyl cellulose (CMC) on the rheological of white bentonite collected from Boyolali, Indonesia (BWB). The first work was the determination of BWB composition with XRF and the study on the effect of SA on the swelling index. The second step was to study adding SA and CMC on viscosity at 600 and 300 rpm. Another rheological parameter (yield point to plastic viscosity ratio, μP/μV) was determined based on the viscosity data. The results showed that the BWB sample tended to be categorized as Ca-bentonite with

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Durmuş, Seyhun. "Impact of Airfoil Type and Placement on Aerodynamic Performance of Blended Wing Body Aircraft." Fırat Üniversitesi Mühendislik Bilimleri Dergisi 37, no. 1 (2025): 351–61. https://doi.org/10.35234/fumbd.1566544.

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The Blended Wing Body (BWB) design holds promise for the future by lowering total drag, emissions, fuel consumption, and noise levels. The aim of this study is to elucidate the influence of airfoil selection on the aerodynamic characteristics of the BWB, particularly focusing on the center body and outer wings. To achieve this objective, comparative analyses were conducted for four different Medium Altitude Long Endurance (MALE) Unmanned Aerial Vehicle (UAV) BWB designs, utilizing XFLR5 software and employing MH 60 and NACA 6412 airfoils. The maximum lift-drag ratio in the entire MH60 BWB desi

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Abass, Falak U., Salah F. Sharif, and Mohammed O. Abass. "Optimal Design of Bituminous Improvement Residue in Roofing and Building Applications." Tikrit Journal of Engineering Sciences 14, no. 3 (2007): 89–110. http://dx.doi.org/10.25130/tjes.14.3.05.

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This work was based on the fact that a lot of waste-environmental pollution’s-can be re-used by fabrication in different economical techniques in addition to save the environment from their aggressive effects. The wastes of polyethylene (Pepsi bottles) and black emulation waste(bwb) for petroleum (bitumen) from local street and Iraqi refineries were used in this work to prepare a matrix materials (bwb/As/PE, bwb /Sc/PE)that will suitably used as water proofing lining and wall insulation. Different weight ratios of waste polymer (polyethylene) as(10,20,30.40,50) wt% bwb is used to improve phsiy

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Ignatov, S. D., and S. I. Tsekhosh. "ELASTIC CHARACTERISTICS OF BRUSH PILE ON THE MUNICIPAL MACHINE WORKING EQUIPMENT." Russian Automobile and Highway Industry Journal 16, no. 1 (2019): 6–17. http://dx.doi.org/10.26518/2071-7296-2019-1-6-17.

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Introduction. The paper describes the actual problem of increasing the operating life of the brush working body (BWB) and improving the cleaning quality. Moreover, the authors discuss the factors affecting the quality of the road surface cleaning and the brush pile resource.Materials and methods. The research presents the results of the interaction process of the BWB pile with the cleaned surface of the roadway. In addition, the authors demonstrate the mathematical model of the interaction process with the basic surface. The simulation is carried out using the MATLAB software and Simulink exte

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GU, Wenting, Binqian ZHANG, Kun MA, Dong LI, Pengfei LYU, and Jie HAN. "Investigation on the flow mechanism of nacelle airframe interaction for podded blended wing body transport." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 2 (2022): 352–59. http://dx.doi.org/10.1051/jnwpu/20224020352.

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For the flow interaction between the podded engine and the airframe of blended wing body configuration(BWB), taking the 300 seats class BWB civil transport NPU-BWB-300 designed by Northwestern Polytechnical University as the research object, the influence of the podded engines on the BWB airframe at typical high and low speed conditions were investigated by CFD method, and the airframe-nacelle interference mechanism was revealed. The results indicate that the podded engines mainly affect the high speed performance of BWB, but have little effect on the low speed performance. The flow interactio

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WU, WENHUA, DEHUA CHEN, NING QIN, XIN PENG, and XINWU TANG. "A NEW EFFICIENT CONTROL METHOD FOR BLENDED WING BODY." International Journal of Modern Physics: Conference Series 19 (January 2012): 396–405. http://dx.doi.org/10.1142/s2010194512008999.

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The blended wing body (BWB) is the hottest one of the aerodynamic shapes of next generation airliner because of its' high lift-drag ratio, but there are still some flaws that cut down its aerodynamical performance. One of the most harmful flaws is the low efficiency of elevator and direction rudder, this makes the BWB hard to be controlled. In this paper, we proposed a new control method to solve this problem by morphing wing—that is, to control the BWB only by changing its wing shape but without any rudder. The pitching moments, rolling moments and yawing moments are plotted versus the parame

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Panagiotou, Pericles, Thomas Dimopoulos, Stylianos Dimitriou, and Kyros Yakinthos. "Quasi-3D Aerodynamic Analysis Method for Blended-Wing-Body UAV Configurations." Aerospace 8, no. 1 (2021): 13. http://dx.doi.org/10.3390/aerospace8010013.

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The current study presents a low-fidelity, quasi-3D aerodynamic analysis method for Blended-Wing-Body (BWB) Unmanned Aerial Vehicle (UAV) configurations. A tactical BWB UAV experimental prototype is used as a reference platform. The method utilizes 2D panel method analyses and theoretical aerodynamic calculations to rapidly compute lift and pitching moment coefficients. The philosophy and the underlying theoretical and semi-empirical equations of the proposed method are extensively described. Corrections related to control surfaces deflection and ground effect are also suggested, so that the B

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Ali, Haris, Mohammad Rasidi Rasani, and Zambri Harun. "Influence of Dimples on the Aerodynamics of Blended Wing Body Airframe: A Computational Study." CFD Letters 17, no. 6 (2024): 45–56. https://doi.org/10.37934/cfdl.17.6.4556.

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Blended-Wing-Body (BWB) aircraft designs have attracted considerable attention due to their potential for enhancing aerodynamic efficiency and fuel economy. This study investigates the integration of dimples on BWB airframes to further improve their aerodynamic performance. Computational Fluid Dynamics (CFD) simulations were used to characterize turbulent airflow and estimate the associated aerodynamic forces. The k-ω Shear-Stress Transport (SST) turbulence model was employed to solve the underlying equations. The objective is to investigate the impact of various dimple locations on the suctio

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Wang, Kelei, and Zhou Zhou. "Aerodynamic Design, Analysis and Validation of a Small Blended-Wing-Body Unmanned Aerial Vehicle." Aerospace 9, no. 1 (2022): 36. http://dx.doi.org/10.3390/aerospace9010036.

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This paper describes the aerodynamic design and assessment of a blended-wing–body (BWB) configuration under the distributed electric propulsion (DEP) installation constraints. The aerodynamic design rationale and process is described, as well as how the DEP system is considered and simplified in the optimization design process. Both the BWB configuration and the DEP induced effects are numerically simulated and analyzed using the Reynolds Averaged Navier–Stokes (RANS) computational fluid dynamics (CFD) flow solvers. To further demonstrate the feasibility and reliability of the design approach,

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Nóbrega, Ian C. C., Sonia P. A. Oliveira, Yulia B. Monakhova, et al. "Chemical composition of whiskies produced in Brazil compared to international products." Deutsche Lebensmittel-Rundschau 109, no. 3 (2013): 145–49. https://doi.org/10.5281/zenodo.8237872.

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Alcoholic strength, volatile acidity, acetaldehyde, methanol, ethyl acetate, higher alcohols (n-propanol, isobutanol, and amyl alcohols), ethyl carbamate, and copper were investigated in 7 brands of blended whiskies produced and bottled in Brazil (BWB) from a wide range of prices, and two brands of blended Scotch whiskies bottled in Brazil (SWB) were investigated for comparison. All brands complied with limits established by Brazilian regulations. The cheapest BWB brand was the most analytically diverse and the only one containing ethyl carbamate above the quantification limit, at 0.09 mg/L. W

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Dimopoulos, Thomas, Pericles Panagiotou, and Kyros Yakinthos. "Stability study and flight simulation of a blended-wing-body UAV." MATEC Web of Conferences 304 (2019): 02013. http://dx.doi.org/10.1051/matecconf/201930402013.

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This article is a product of the design process of a Blended-Wing- Body Unmanned Aerial Vehicle (BWB UAV). The BWB geometry blends the wing and the fuselage so that the fuselage also contributes in lift generation. This geometry reduces the lift to drag ratio significantly, however it also compromises the aircraft’s stability and controllability, since there is no horizontal and vertical tail. As these features are absent from the BWB layout, the need to incorporate their functions in the new geometry arises so that they cover stability demands sufficiently, according to aircraft of similar si

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Lonneux, Jean-François, Thu Queen Nguyen, Wim Hollanders, et al. "Humoral and cell-mediated immune responses of beef and dairy cattle experimentally infested with Psoroptes ovis." American Journal of Veterinary Research 59, no. 5 (1998): 583–87. http://dx.doi.org/10.2460/ajvr.1998.59.5.583.

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Abstract Objective To compare cellular and humoral immune responses of beef (Belgian White and Blue [BWB]) and dairy (Friesian-Holstein [FH]) cattle to Psoroptes ovis infestation and to determine whether P ovis infestation impaired immune responses to infectious bovine rhinotracheitis virus (IBR) vaccine or an immunogenic protein (keyhole-limpet hemocyanin [KLH]). Animals 19 BWB and 6 FH 1-year-old calves. Procedure 2 trials were performed. In each trial, 7 (trial 1) or 6 (trial 2) BWB calves and 3 FH calves were experimentally infested with P ovis and 3 BWB calves were maintained as uninfeste

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PIEREN, Reto, Dorothea LINCKE, Axel HEUSSER, et al. "Flyover auralization of a blended wing body aircraft considering atmospheric turbulence effects." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 9 (2024): 2814–21. http://dx.doi.org/10.3397/in_2024_3235.

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In the ARTEM project a novel blended wing body (BWB) long-range aircraft was designed and optimized for low-noise operation. Virtual flyovers of different BWB vehicle variants were synthesized and auralized in the AuraLab using a loudspeaker array. Prior to auralizing the novel aircraft, the applied methods were hierarchically validated by comparison with field recordings of existing jet aircraft, assessing acoustical indices, time-frequency features, perceived plausibility, and induced noise annoyance. To achieve convincing syntheses, the focus was on developing new auralization models for a

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Galea, E. R., L. Filippidis, Z. Wang, and J. Ewer. "Fire and evacuation analysis in BWB aircraft configurations: computer simulations and large-scale evacuation experiment." Aeronautical Journal 114, no. 1154 (2010): 271–77. http://dx.doi.org/10.1017/s0001924000003717.

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Abstract How long would it take to evacuate a blended wing body (BWB) aircraft with around 1,000 passengers and crew? How long would it take an external post-crash fire to develop non-survivable conditions within the cabin of a BWB aircraft? Is it possible for all the passengers to safely evacuate from a BWB cabin subjected to a post-crash fire? These questions are explored in this paper through computer simulation. As part of project NACRE, the airEXODUS evacuation model was used to explore evacuation issues associated with BWB aircraft and to investigate fire issues, the CFD fire simulation

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Ma, Yunlong, Guang Pan, Qiaogao Huang, and Jinglu Li. "Research on Hydrodynamic Characteristics of Blended Wing Body Underwater Glider with Rudder." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 1 (2020): 24–30. http://dx.doi.org/10.1051/jnwpu/20203810024.

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In order to improve the maneuverability and stability of the Blended Wing Body (BWB) underwater glider, the trailing edge rudder is integrated into its shape design in this paper. Through the numerical simulation of CFD, the variation laws of the hydraulic parameters such as lift, drag, lift-to-drag ratio with the angle of attack and rudder angle are given. Compared with the traditional underwater glider, the BWB underwater glider not only has high loading capacity, but also has a maximum lift-to-drag ratio three times that of the former, resulting in higher energy efficiency. At the same time

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Marcone, C., K. S. Gibb, C. Streten, and B. Schneider. "‘Candidatus Phytoplasma spartii’, ‘Candidatus Phytoplasma rhamni’ and ‘Candidatus Phytoplasma allocasuarinae’, respectively associated with spartium witches'-broom, buckthorn witches'-broom and allocasuarina yellows diseases." International Journal of Systematic and Evolutionary Microbiology 54, no. 4 (2004): 1025–29. http://dx.doi.org/10.1099/ijs.0.02838-0.

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Spartium witches'-broom (SpaWB), buckthorn witches'-broom (BWB) and allocasuarina yellows (AlloY) are witches'-broom and yellows diseases of Spartium junceum (Spanish broom), Rhamnus catharticus (buckthorn) and Allocasuarina muelleriana (Slaty she-oak), respectively. These diseases are associated with distinct phytoplasmas. The SpaWB, BWB and AlloY phytoplasmas share <97·5 % 16S rDNA sequence similarity with each other and with other known phytoplasmas, including the closely related phytoplasmas of the apple proliferation group. Also, the SpaWB, BWB and AlloY phytoplasmas each have a differ

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Lucky Bose, Isfaq Ahmed Rafsun, and Junquan Fu. "Research on stability for blended-wing-body aircraft." World Journal of Advanced Research and Reviews 23, no. 3 (2024): 2919–32. http://dx.doi.org/10.30574/wjarr.2024.23.3.2961.

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The primary goal of this research is to research the stability properties of a blended-wing-body (BWB) aircraft. This section examines the assessment and selection of aircraft design parameters, planform design, and reflex wing and conducts a complete aircraft stability analysis. A BWB aircraft conceptual design has been completed and the design. To attain static stability, it was examined and refined. The BWB aircraft's study was performed at three distinct values. The analytical findings were used to calculate the angle-of-attack (AOA) and the stall AOA. We determined the estimated initial d

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Lucky, Bose, Ahmed Rafsun Isfaq, and Fu Junquan. "Research on stability for blended-wing-body aircraft." World Journal of Advanced Research and Reviews 23, no. 3 (2024): 2919–32. https://doi.org/10.5281/zenodo.14978810.

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The primary goal of this research is to research the stability properties of a blended-wing-body (BWB) aircraft. This section examines the assessment and selection of aircraft design parameters, planform design, and reflex wing and conducts a complete aircraft stability analysis. A BWB aircraft conceptual design has been completed and the design. To attain static stability, it was examined and refined. The BWB aircraft's study was performed at three distinct values. The analytical findings were used to calculate the angle-of-attack (AOA) and the stall AOA. We determined the estimated initial d

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Raja, Vijayanandh, Ramesh Murugesan, Senthil Kumar Solaiappan, et al. "Design, Computational Aerodynamic, Aerostructural, and Control Stability Investigations of VTOL-Configured Hybrid Blended Wing Body-Based Unmanned Aerial Vehicle for Intruder Inspections." International Journal of Aerospace Engineering 2023 (February 24, 2023): 1–31. http://dx.doi.org/10.1155/2023/9699908.

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Unmanned aerial vehicles (UAVs) are gaining in popularity and sophistication in today’s modern world. UAVs are now available in a wide range of configurations. A UAV’s many applications include aerial photography and videography and target tracking. The upward-pointing propellers of some modern fixed-wing UAVs make it possible for them to take off and land vertically. Surveillance and intruder inspections are two areas where the blended wing body (BWB) configuration shines. This is because its weight is spread uniformly throughout the body, its radar signal is weaker than that of alternative c

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Ali, Zurriati Mohd, Wahyu Kuntjoro, and Wisnoe Wirachman. "The Effect of Canard to the Aerodynamic Behavior of Blended Wing Body Aircraft." Applied Mechanics and Materials 225 (November 2012): 38–42. http://dx.doi.org/10.4028/www.scientific.net/amm.225.38.

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This paper presents a study on the effect of canard setting angle on the aerodynamic characteristic of a Blended Wing Body (BWB). Canard effects to BWB aerodynamic characteristics are not widely investigated. Hence the focus of the study is to investigate the variations of lifts, drags and moments when the angles of attack are varied at different canard setting angles. Wind tunnel tests were performed on BWB aircraft with canard setting angles,  ranging from -20˚ to 20˚. Angles of attack,  were varied from -10˚ to 10˚. Aspect ratio and canard planform area were kept fixed. All tests were con

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WANG, Kelei, Zhou ZHOU, and Yang ZHANG. "Aerodynamic characteristics research of a distributed propulsion blended-wing-body aircraft." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 1 (2022): 18–24. http://dx.doi.org/10.1051/jnwpu/20224010018.

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According to the development and research background of the next generation civil aircraft, the aerodynamic characteristics and stall mechanism of a specified distributed propulsion (DP) blended-wing-body (BWB) aircraft are analyzed and studied by combining the numerical simulation and the wind tunnel tests. Firstly, the DP BWB configuration and the numerical simulation methods are introduced. Secondly, the aerodynamic performance of the DP BWB aircraft between with and without the DP induced effects into consideration are compared and analyzed by using the numerical simulation. Finally, the s

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Karpuk, Stanislav, Yaolong Liu, and Ali Elham. "Multi-Fidelity Design Optimization of a Long-Range Blended Wing Body Aircraft with New Airframe Technologies." Aerospace 7, no. 7 (2020): 87. http://dx.doi.org/10.3390/aerospace7070087.

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The German Cluster of Excellence SE²A (Sustainable and Energy Efficient Aviation) is established in order to investigate the influence of game-changing technologies on the energy efficiency of future transport aircraft. In this paper, the preliminary investigation of the four game-changing technologies active flow control, active load alleviation, boundary layer ingestion, and novel materials and structure concepts on the performance of a long-range Blended Wing Body (BWB) aircraft is presented. The BWB that was equipped with the mentioned technologies was designed and optimized using the mult

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Petrovic, V. C., M. P. Petrovic, D. Ruzic-Muslic, et al. "Genotype, sex and interaction effect on lamb growth traits." Biotehnologija u stocarstvu 31, no. 1 (2015): 37–44. http://dx.doi.org/10.2298/bah1501037p.

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The pure breeds and crossing have an important role in production. It is essential in sheep meat production to maintain the genetic diversity of the adapted breeds, pure breeds and their crosses. Objective of the study is to determine the impact of genotype and sex on growth traits of lambs. Results of the study showed that male of all genotypes were dominant on body weight in all ages (from BWB to BW90). The highest birth weight (BWB) got male of genotype 2 (W). The lowest body weight at birth was the female lambs of genotype 1 (P). Body weights at ages 30, 60 and 90 days, male and female of

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Kale, S., and E. Pendharkar. "Effects of wing twist on lift and drag characteristics of blended wing body aircraft." Journal of Physics: Conference Series 2089, no. 1 (2021): 012024. http://dx.doi.org/10.1088/1742-6596/2089/1/012024.

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Abstract Blended Wing Body is a revolutionary concept offering phenomenal performance advantages over conventional aircraft. There are various aerodynamic features that are added to the wing in order to adjust the lift distribution and wing twist is one of them. This paper presents a progressive study to examine the effects of twist angles on the aerodynamic characteristics of a Blended Wing Body (BWB) aircraft. CFD analysis is carried out on seven BWB models having wing twists ranging from +3° to -3°. Each model is analyzed at four different Mach numbers. The coefficient of drag (Cd) and coef

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Cai, Chen Fang, Yong Ming Qin, and Jiang Hao Wu. "The Effect of Belly-Flap on Aerodynamic Performance of Blended Wing Body Civil Aircraft." Applied Mechanics and Materials 378 (August 2013): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.378.69.

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The effect of Belly-flap on aerodynamic performance of BWB civil aircraft are investigated in take-off and landing by computational fluid dynamics. And the overload of BWB with Belly-flap also is calculated in the same flight condition. Six parameters are discussed as design parameters of the Belly flap. It is shown that the proper combination of design parameters of Belly-flap can increase the maximum of lift and reduce the angle of attack and nose down moment to improve the flight safety in take-off and landing. When the aircraft with Belly-flap encounters the gust, the maximum overload is v

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Brown, Cecil H. "Evaluating proposals of language genealogical relationship." Language Dynamics and Change 7, no. 2 (2017): 252–85. http://dx.doi.org/10.1163/22105832-00702003.

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In an endeavor to objectify and provide uniformity to the comparative method of historical linguistics, this study describes the Beck-Wichmann-Brown (BWB) system for evaluating lexical sets assembled as evidence for proposals of language genealogical relationship. The approach quantitatively assesses the degree of support that collections of comparative sets provide for proposals, with regard to whether or not observed lexical similarity exceeds coincidental expectation. BWB is illustrated through application to an assemblage of 51 comparative sets compiled by Pache (2016) for the affiliation

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Vankan, W. J., W. F. Lammen, E. Scheers, P. J. Dewitte, and Sebastien Defoort. "Concept Evaluation of Radical Short–Medium-Range Aircraft with Turbo-Electric Propulsion." Aerospace 11, no. 6 (2024): 477. http://dx.doi.org/10.3390/aerospace11060477.

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Ambitious targets for the coming decades have been set for further reductions in aviation greenhouse gas emissions. Hybrid electric propulsion (HEP) concepts offer potential for the mitigation of these aviation emissions. To investigate this potential in an adequate level of detail, the European research project IMOTHEP (Investigation and Maturation of Technologies for Hybrid Electric Propulsion) explores key technologies for HEP in close relation with developments of aircraft missions and configuration. This paper presents conceptual-level design investigations on radical HEP aircraft configu

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Ali, Haris, Mohammad Rasidi Rasani, and Zambri Harun. "Impact of the dimple indentation depth and location for passive flow control in Blended Wing Body airframe at low and high subsonic speeds." PLOS One 20, no. 7 (2025): e0325778. https://doi.org/10.1371/journal.pone.0325778.

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This research investigates the role of dimples in enhancing the aerodynamic characteristics of a Blended-Wing-Body (BWB) airframe. Numerical simulations, grounded in Computational Fluid Dynamics (CFD), were utilized to model turbulent airflow and assess the aerodynamic forces acting on the wing structure. The k-ω Shear-Stress Transport (SST) turbulence model was applied to effectively solve the governing equations. The impact of four dimple indentation depths (d/Dd = 0.025, 0.05, 0.075, and 0.1) at six specific locations on either the suction or pressure sides of the BWB wing surface was inves

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Ghani, M. Khairul Zaimy Abd, and Anika Zafiah Mohd Rus. "Influence of Hot Compression Moulding of Biopolymer Filled Waste Granulate Biopolymer." Applied Mechanics and Materials 315 (April 2013): 448–52. http://dx.doi.org/10.4028/www.scientific.net/amm.315.448.

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Bio-monomer based on original cooking oil was mixed with the hardeners with different percentages of Waste granulate Biopolymer (WB) fillers which is 30, 40, and 50 % equivalent to weight of monomer to produce Biopolymer filled Waste granulate Biopolymer (BWB) by using hot compress moulding. The tensile strength of BWB is 0.33, 0.45 and 0.43 MPa, meanwhile value of Youngs Modulus is 11.00, 8.18 and 5.06 MPa for loading 30, 40 and 50 % respectively. From the Scanning Electron Microscopy (SEM) micrograph, BWB has two characteristic and classified as a brittle and ductile fracture of granular (sh

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Mohd Saad, Nornashiha, Wirachman Wisnoe, Rizal Effendy Mohd Nasir, Zurriati Mohd Ali, and Ehan Sabah Shukri Askari. "Aerodynamic Analysis of Blended Wing Body - Unmanned Aerial Vehicle (BWB-UAV) Equipped with Horizontal Stabilizers." MATEC Web of Conferences 256 (2019): 02004. http://dx.doi.org/10.1051/matecconf/201925602004.

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This paper presents an aerodynamic characteristic study in longitudinal direction of UiTM Blended Wing Body-Unmanned Aerial Vehicle Prototype (BWB-UAV Prototype) equipped with horizontal stabilizers. Flight tests have been conducted and as the result, BWB experienced overturning condition at certain angle of attack. Horizontal stabilizer was added at different location and size to overcome the issue during the flight test. Therefore, Computational Fluid Dynamics (CFD) analysis is performed at different configuration of horizontal stabilizer using Spalart - Allmaras as a turbulence model. CFD s

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Negi, Vibhore, Ravi Joshi, Krishan Chand, et al. "Optical flux and colour variability of blazars in the ZTF survey." Monthly Notices of the Royal Astronomical Society 510, no. 2 (2021): 1791–800. http://dx.doi.org/10.1093/mnras/stab3591.

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ABSTRACT We investigate the temporal and colour variability of 897 blazars, comprising 455 BL Lacertae objects (BL Lacs) and 442 Flat Spectrum Radio Quasars (FSRQs), selected from the Roma-BZCAT catalogue, using the multiband light curves from the Zwicky Transient Facility (ZTF DR6) survey. Assessing the colour variability characteristics over ∼2 yr time-scales, we found that 18.5 per cent (84 out of 455) BL Lacs showed a stronger bluer-when-brighter (BWB) trend, whereas 9.0 per cent (41 out of 455) showed a redder-when-brighter (RWB) trend. The majority (70 per cent) of the BL Lacs showing RW

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YUAN, Changyun, Ming XIA, Weicheng GAO, Weifeng SHI, Wenxiu GONG, and Haoqian YUAN. "Effect of canard-chordwise blowing on the aerodynamic characteristics of blended wing body aircraft." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 43, no. 1 (2025): 24–30. https://doi.org/10.1051/jnwpu/20254310024.

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To enhance the effect of the canard increasing lift and pitching moment coefficient of the blended-wing-body(BWB) aircraft, numerical simulation is adopted to analyze the effect of the canard-chordwise blowing on the low-speed aerodynamic characteristics of BWB configuration. By presenting the results of blowing momentum coefficient at different angles of attack, the flow mechanism of chordwise blowing device's influence on the lift and pitching moment coefficient is analyzed, followed by investigating the effect of the blowing momentum coefficient and chordwise blowing position on the low-spe

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Diyana Nasri Huang, Farah, Wirachman Wisnoe, Rizal Effendy Mohd. Nasir, and Ehan Sabah Shukri Askari. "Effect of Wing Locations to the Aerodynamic of UiTMâ€™s Blended Wing Body-Unmanned Aerial Vehicle (BWB-UAV) Prototype." International Journal of Engineering & Technology 7, no. 4.25 (2018): 119–25. http://dx.doi.org/10.14419/ijet.v7i4.25.22410.

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This paper focuses on the effect of wing placement on UiTMâ€™s BWB Prototype to the aerodynamic performance of the aircraft. Lift coefficient (CL), drag coefficient (CD) and pitching moment coefficient (CM) are analyzed at 20 m/s air velocity, using NUMECA Computational Fluid Dynamics (CFD) software. Three wing locations are selected, i.e.: initial location (in reference to the BWB Prototype), front location (30% from leading edge), and middle location (in between of the first two cases). The canard and wing tips from the BWB Prototype are removed for this study. Grid independence study is com

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Edmonds, Ruth, Alfred Ochaya, and Nicola Sansom. "The role of resilience processes in education and well-being outcomes for separated children in Uganda: Exploring street-connected children’s pathways through a resilience-based programme and beyond." Global Studies of Childhood 12, no. 1 (2022): 14–26. http://dx.doi.org/10.1177/20436106221082677.

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This article explores the role resilience processes play in education and well-being outcomes for street-connected children. It draws on research and practice undertaken as part of the Building with Bamboo Programme (BwB) on resilience. BwB investigated the forms a resilience-based approach might usefully take in practice, the effect this has on promoting resilience in children, and how this resilience leads to improved outcomes in their lives. Our article draws specifically on the experiences of street-connected children who were involved in such approaches as part of programmes at S.A.L.V.E.

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Song, Yu, Jia Liu, and Qian Liu. "Dynamic Decision-Making Process of Evacuees during Post-Earthquake Evacuation near an Automatic Flap Barrier Gate System: A Broken Windows Perspective." Sustainability 13, no. 16 (2021): 8771. http://dx.doi.org/10.3390/su13168771.

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The automatic flap barrier gate system (AFBGS) plays a critical role in building security, but it is more vulnerable to natural hazards than common exits (including power failure, due to earthquakes, and delayed evacuation, due to safety certification, etc.). This article considers a dynamic decision-making process of evacuees during post-earthquake evacuation near an AFBGS. An interesting metaphor, broken windows (BW), is utilized to interpret people’s actual behavior during evacuation. A multi-stage decision-making mechanism of evacuees is developed to characterize the instantaneous transiti

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Humphreys-Jennings, Clayton, Ilias Lappas, and Dragos Mihai Sovar. "Conceptual Design, Flying, and Handling Qualities Assessment of a Blended Wing Body (BWB) Aircraft by Using an Engineering Flight Simulator." Aerospace 7, no. 5 (2020): 51. http://dx.doi.org/10.3390/aerospace7050051.

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The Blended Wing Body (BWB) configuration is considered to have the potential of providing significant advantages when compared to conventional aircraft designs. At the same time, numerous studies have reported that technical challenges exist in many areas of its design, including stability and control. This study aims to create a novel BWB design to test its flying and handling qualities using an engineering flight simulator and as such, to identify potential design solutions which will enhance its controllability and manoeuvrability characteristics. This aircraft is aimed toward the commerci

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El-KASSABY, YOUSRY A., and MILAN LSTIBŮREK. "Breeding without breeding." Genetics Research 91, no. 2 (2009): 111–20. http://dx.doi.org/10.1017/s001667230900007x.

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SummaryAn innovative approach to tree breeding called ‘breeding without breeding’ (BWB) is presented. The method, as applied on the material in hand, allows the capture of 75–85% of the genetic response to selection attained through conventional programmes without the need to do any controlled pollination and simplified or possibly no experimental field testing: both considered to be the most resource-demanding activities in breeding programmes. BWB combines the use of genotypic or phenotypic pre-selection of superior individuals, informative DNA markers for fingerprinting and pedigree reconst

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Nasir, Rizal E. M., Wahyu Kuntjoro, Wisnoe Wirachman, and Zurriati Ali. "Longitudinal Flight Dynamics of Baseline-II BWB UAV." Advanced Materials Research 433-440 (January 2012): 6636–40. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6636.

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The objective of this paper is to investigate longitudinal flight dynamics of the said aircraft at loitering flight condition near sea level. Three mathematical dynamic models are used to compute transient response of Baseline-II E-2 BWB along with a proposed model known as Model-N. Model-N is derived to incorporate as many important derivatives, including gravitational and pitch angle factor, as possible. While all these four dynamic models are different in a sense where one model is more simple or complex than the others, the basic architecture of all these models are the same. This paper sh

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Hanis, Tomás, and Martin Hromcík. "Information-based sensor placement optimization for BWB aircraft." IFAC Proceedings Volumes 44, no. 1 (2011): 2236–41. http://dx.doi.org/10.3182/20110828-6-it-1002.00428.

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Kissoon, Sajal, Francesco Saverio Mastropierro, Devaiah K. Nalianda, Andrew Rolt, and Bobby Sethi. "Assessment of the BWB aircraft for military transport." Aircraft Engineering and Aerospace Technology 92, no. 5 (2020): 769–76. http://dx.doi.org/10.1108/aeat-09-2019-0188.

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Purpose The growth in air mobility, rising fuel prices and ambitious targets in emission reduction are some of the driving factors behind research towards more efficient aircraft. The purpose of this paper is to assess the application of a blended wing body (BWB) aircraft configuration with turbo-electric distributed propulsion in the military sector and to highlight the potential benefits that could be achieved for long-range and heavy payload applications. Design/methodology/approach Mission performance has been simulated using a point-mass approach and an engine performance code (TURBOMATCH

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Jeneral, Nathalie. "25. Competition Talk der BWB: „Kreditkarten und Wettbewerb“." Österreichische Zeitschrift für Kartellrecht, no. 1 (2017): 24–26. http://dx.doi.org/10.33196/oezk201701002401.

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Seper, Georg. "27. Competition Talk der BWB: Richtlinie zum Schadensersatz." Österreichische Zeitschrift für Kartellrecht, no. 2 (2017): 74–76. http://dx.doi.org/10.33196/oezk201702007401.

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Feldner, Judith, and Yvonne Handler. "Settlements: Eine Analyse des aktualisierten Standpunkts der BWB." Österreichische Zeitschrift für Kartellrecht 17, no. 1 (2024): 8–12. http://dx.doi.org/10.33196/oezk202401000801.

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