Conceptual design of a Blended Wing Body MALE UAV

Panagiotou, Pericles; Fotiadis-Karras, S.; Yakinthos, K.

doi:10.1016/j.ast.2017.11.032

Cited by 88 publications

(49 citation statements)

References 17 publications

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“…One essential flight characteristic is thrust-to-weight ratio. Thrust-to-weight ratio determines how long a UAV can fly and how much payload it can carry [36]. For a UAV to safely hover at 50% throttle settings, it must produce thrust that is at least twice the downward force due to weight.…”

Section: Uav Characteristics and Weight Distributionmentioning

confidence: 99%

Autonomous In Situ Measurements of Noncontaminant Water Quality Indicators and Sample Collection with a UAV

Koparan

Koc

Privette

et al. 2019

Water

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The objective of this research was to conduct in situ measurements of electrical conductivity (EC), pH, dissolved oxygen (DO), and temperature, and collect water samples simultaneously at different depths using an unmanned aerial vehicle (UAV). The UAV system consists of a hexacopter, water sampling cartridges (WSC), and a sensor node. Payload capacity and endurance of the UAV were determined using an indoor test station. The UAV was able to produce 106 N of thrust for 10 min with 6.3 kg of total takeoff weight. The thrust-to-weight ratio of the UAV was 2.5 at 50% throttle. The decision for activating the water sampling cartridges and sensor node was made autonomously from an onboard microcontroller. System functions were verified at 0.5 m and 3.0 m depths in 6 locations over a 1.1 ha agricultural pond. Average measurements of EC, pH, DO, and temperature at 0.5 m depth were 42 µS/cm, 5.6, 8.2 mg/L, and 31 °C, while the measurements at 3 m depth were 80 µS/cm, 5.3, 5.34 mg/L, and 24 °C, respectively. The UAV-assisted autonomous water sampling system (UASS) successfully activated the WSC at each sampling location. The UASS would reduce the duration of water quality assessment and help practitioners and researchers to conduct observations with lower operational costs. The developed system would be useful for sampling and monitoring of water reservoirs, lakes, rivers, and ponds periodically or after natural disasters.

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Section: Uav Characteristics and Weight Distributionmentioning

confidence: 99%

Autonomous In Situ Measurements of Noncontaminant Water Quality Indicators and Sample Collection with a UAV

Koparan

Koc

Privette

et al. 2019

Water

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“…Major geometrical parameters were obtained with respect to the preliminary weight (W TOp ) and wing planform area (S), previously computed in the constraint analysis. Moreover, nondimensional parameters such as wing aspect ratio (AR) and taper ratio 5 (λ) were initially established with regard to similar UAV architectures [12] and permissible ranges for this application [26]. The airfoil selected was the NACA 64A210 because it has proven to be suitable for small BWB models [45].…”

Section: Conceptual Modelmentioning

confidence: 99%

“…The purpose of the present chapter is to investigate the performance of an electricpowered blended wing body (BWB) 2 UAV deployed on the aforesaid ecosystems. This baseline configuration has been selected based on previous research [11], where it has been found that BWB configurations offer high volumetric efficiency while providing good aerodynamic performance [12] as a result of the elliptical lift distribution improvement over the whole airframe [13][14][15]. Furthermore, the BWB model facilitates the integration of different propulsion architectures, which results in a broader spectrum of configurations for distributed propulsion [16].…”

Section: Introductionmentioning

confidence: 99%

Wetland Monitoring Using Unmanned Aerial Vehicles with Electrical Distributed Propulsion Systems

Valencia¹,

Alulema²,

Rodriguez³

2019

Propulsion Systems

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The inspection of wetlands in the Ecuadorian highlands has gained importance due to the environmental issues linked to the growth of human activities and the expansion of the agricultural and livestock frontiers. In this sense, unmanned aerial vehicles (UAVs) have been amply used in monitoring activities such as the supervision of threatened ecosystems, where cyclic measurements and high-resolution imagery are needed. However, the harsh operating conditions in the Andean highlands and sensitive ecosystem restrictions demand efficient propulsion configurations with low environmental impact. Electrical distributed propulsion (EDP) systems have surged as a forefront alternative since they offer benefits in both the propulsive and aerodynamic performance of fixed-wing UAVs. In this chapter, an EDP system is sized for a design point at the Andean operating conditions. Thereafter, two propulsion configurations were established based on off-the-shelf components, and their performance was characterized through analytical approaches. These results highlight the trends in power consumption and performance when the number of propulsors is increased. A significant contribution of this work is to exhibit important patterns in the performance of electric propulsion by using commercial components, and to set the operating limitations that can be further explored for analogous configurations in larger UAVs.

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“…Blended Wing Body (BWB) aircraft is tailless design that combined wing and fuselage [1,2]. Compared to conventional aircraft, BWB is usually better in terms of aerodynamic performance, lower fuel burn and lower noise emission [3].…”

Section: Introductionmentioning

confidence: 99%

“…According to M. Nasir et al, BWB concept can save up to 30% of fuel consumption by improving the lift-to-drag ratio [6]. However, there are some issues in BWB related to aerodynamic, structures and control [2].…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Analysis of Blended Wing Body - Unmanned Aerial Vehicle (BWB-UAV) Equipped with Horizontal Stabilizers

et al. 2019

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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 simulation of the aircraft is conducted at Mach number 0.06 or v = 20 m/s at various angle of attack, α. The data of lift coefficient (CL), drag coefficient (CD), and pitching moment coefficient (CM) is obtained from the simulations. The data is represented in curves against angle of attack to measure the performance of BWB prototype with horizontal stabilizer. From the simulation, configuration with far distance and large horizontal stabilizer gives steeper negative pitching moment slope indicating better static stability of the aircraft.

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Conceptual design of a Blended Wing Body MALE UAV

Cited by 88 publications

References 17 publications

Autonomous In Situ Measurements of Noncontaminant Water Quality Indicators and Sample Collection with a UAV

Autonomous In Situ Measurements of Noncontaminant Water Quality Indicators and Sample Collection with a UAV

Wetland Monitoring Using Unmanned Aerial Vehicles with Electrical Distributed Propulsion Systems

Aerodynamic Analysis of Blended Wing Body - Unmanned Aerial Vehicle (BWB-UAV) Equipped with Horizontal Stabilizers

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