Aerodynamic performance of mutual interaction tandem propellers with ducted UAV

Rostami, Mohsen; Farajollahi, Amir Hamzeh

doi:10.1016/j.ast.2020.106399

Cited by 22 publications

(11 citation statements)

References 11 publications

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“…Remark 2. Compared with some researches [6,29,30], the modelling method of duct with coaxial-rotors in this paper combines both theory and system identification, instead of in-depth analysis of complex aerodynamic characteristics. By identifying parameters such as k T ,i and k M ,i , a basically accurate but simple, control-oriented model of the DCUAV can be obtained.…”

Section: Lifting Subsystemmentioning

confidence: 99%

“…The force on the vehicle generated by the lifting system is given as follows:

\begin{equation}{F_{rotor}} + {F_{duct}} = \left[ { \def\eqcellsep{&}\begin{array}{@{}*{1}{c}@{}} 0\\[5pt] 0\\[5pt] {2{a_d}\left( {{k_{T,up}}{\omega _{up}}^2 + {k_{T,dw}}{\omega _{dw}}^2} \right)} \end{array} } \right]\end{equation}

Remark Compared with some researches [6, 29, 30], the modelling method of duct with coaxial‐rotors in this paper combines both theory and system identification, instead of in‐depth analysis of complex aerodynamic characteristics. By identifying parameters such as

{k_{T,i}}

and

{k_{M,i}}

, a basically accurate but simple, control‐oriented model of the DCUAV can be obtained.…”

Section: Dynamic Modeling Of Dcuavmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic observer‐basedH∞ robust control for a ducted coaxial‐rotor UAV

2022

IET Control Theory & Appl

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Section: Lifting Subsystemmentioning

confidence: 99%

“…The force on the vehicle generated by the lifting system is given as follows:

\begin{equation}{F_{rotor}} + {F_{duct}} = \left[ { \def\eqcellsep{&}\begin{array}{@{}*{1}{c}@{}} 0\\[5pt] 0\\[5pt] {2{a_d}\left( {{k_{T,up}}{\omega _{up}}^2 + {k_{T,dw}}{\omega _{dw}}^2} \right)} \end{array} } \right]\end{equation}

{k_{T,i}}

and

{k_{M,i}}

, a basically accurate but simple, control‐oriented model of the DCUAV can be obtained.…”

Section: Dynamic Modeling Of Dcuavmentioning

confidence: 99%

Dynamic observer‐basedH∞ robust control for a ducted coaxial‐rotor UAV

2022

IET Control Theory & Appl

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“…Propeller pitch H, as shown in Figure 1. This is the distance the propeller would travel in one revolution (from point 0 to point 1) if it could screw into the air without slip, like a bolt into a nut [2]. The actual pitch of the propeller depends on the ratio of the flight speed to the rotational speed of the propeller.…”

Section: Basic Propeller Informationmentioning

confidence: 99%

Analysis and Optimization of the Propeller Shape for a Stratospheric Drone Research Platform

Zenowicz

Skarka

2021

Advances in Transdisciplinary Engineering

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Fix-wings small aircraft or drones, for flight, must be equipped with a source of thrust. In most cases, it will be propulsion systems including engine and propeller that generate the necessary thrust force. Regardless of whether the system includes an electric motor, combustion, or hydrogen engine of torque moment, the most important element of the system is the propeller. It is the element responsible for generating thrust, which is the force necessary for the flight in each of its stages. The article presents all stages of the analysis and optimization of the propeller for the considered highly flexible structure stratospheric drone. Analysis, after integration with CAD software, allows for the preparation of a comprehensive generative model. The basic propeller parameters were selected on the basis of flight altitude, considered structure, flight time, flight speed, the weight of the structure, assumed location of the engine and propeller. These assumptions made it possible to conduct a preliminary analysis of loads, propeller blade pressure distribution, thrust, and the total level of vibrations. The goal of the research is to develop a methodology of designing and preliminary analysis of propeller, which can be integrated into the generative model.

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“…At present, most domestic and foreign research studies on UAVs focus on tilting rotors, wing body fusion, single fixed wing or rotor (Lei et al, 2012;Chen et al, 2019aChen et al, , 2019bAllenspach and Ducard, 2021;Rostami and Farajollahi, 2016). Due to the complexity of the combined flight of fixed wing and rotor and the complexity of the start and stop process, there are few UAVs that use the combination of fixed wing and rotor.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic analysis of a logistics UAV wing with compound ducted rotor

Guan

Zeng

2022

AEAT

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Purpose To solve the problems of short battery life and low transportation safety of logistics drones, this paper aims to propose a design of logistics unmanned aerial vehicles (UAV) wing with a composite ducted rotor, which combines fixed wing and rotary-wing. Design/methodology/approach This UAV adopts tiltable ducted rotor combined with fixed wing, which has the characteristics of fast flight speed, large carrying capacity and long endurance. At the same time, it has the hovering and vertical take-off and landing capabilities of the rotary-wing UAV. In addition, aerodynamic simulation analysis of the composite model with a fixed wing and a ducted rotor was carried out, and the aerodynamic influence of the composite model on the UAV was analyzed under different speeds, fixed wing angles of attack and ducted rotor speeds. Findings The results were as follows: when the speed of the ducted rotor is 2,500 rpm, CL and K both reach maximum values. But when the speed exceeds 3,000 rpm, the lift will decrease; when the angle of attack of the fixed wing is 10° and the rotational speed of the ducted rotor is about 3,000 rpm, the aerodynamic characteristics of the wing are better. Originality/value The novelty of this work comes from a composite wing design of a fixed wing combined with a tiltable ducted rotor applied to the logistics UAVs, and the aerodynamic characteristics of the design wing are analyzed.

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Aerodynamic performance of mutual interaction tandem propellers with ducted UAV

Cited by 22 publications

References 11 publications

Dynamic observer‐basedH∞ robust control for a ducted coaxial‐rotor UAV

Dynamic observer‐basedH∞ robust control for a ducted coaxial‐rotor UAV

Analysis and Optimization of the Propeller Shape for a Stratospheric Drone Research Platform

Aerodynamic analysis of a logistics UAV wing with compound ducted rotor

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