Main rotor-body action for virtual blades model

Kusyumov, A. N.; Kusyumov, S. A.; Mikhaǐlov, S. A.; Romanova, Elena; Phayzullin, Konstantin; Lopatin, Evgeniy; Barakos, George N.

doi:10.1051/epjconf/201818002050

Cited by 10 publications

(11 citation statements)

References 5 publications

(5 reference statements)

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“…To overcome this problem, a number of methods of calculating the propeller performance characteristics was introduced during the past century. Blade element methods [4,5], vortex theory [6,7], generalized dynamic wake model [8], or CFD [9]. Blade element methods are often used to calculate the performance of the wind turbines as well [10].…”

Section: Calculation Of Propeller Performance Characteristicsmentioning

confidence: 99%

Optimization of SUAV’s propeller in a hover

2020

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Small unmanned aerial vehicles (SUAVs) have found a widespread application in past decades. However, as the criticality of the missions for which they can be used increases, the demand for improvement of their efficiency increases as well. The paper focuses on a propeller driven SUAVs of a multirotor type, equipped with an electric motor, battery and propeller. The paper presents a simplified method of calculation of the SUAV maximal endurance, if the characteristics of all components of the propulsion system are known. To improve the overall efficiency of the propulsion system of an SUAV, the correct combination of all propulsion system components is critical. However, the largest impact on the maximal endurance is, arguably, caused by the propeller. The paper proposes a simple method of optimizing the propeller characteristics for hover and compares the proposed propeller design with conventional and commercially available propellers.

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Section: Calculation Of Propeller Performance Characteristicsmentioning

confidence: 99%

Optimization of SUAV’s propeller in a hover

2020

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“…B [1] Number of Blades c [m] Local chord length [1] Relative chord length = [1] Dimensionless radius = t [m] Local thickness [1] Dimensionless thickness = U1 [ms -1] Angular flow velocity vector V1 [ms -1] Axial flow velocity vector…”

Section: Nomenclaturementioning

confidence: 99%

“…While it is possible e.g. to implement a CFD calculation to obtain precise results, the tuning of the calculation is challenging and it does take considerable time [1].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Two 2d Propeller Calculation Methods and the Dependency of the Solution in Relation to the Number of Calculation Points

Hnidka¹,

BANG²,

Rozehnal³

2018

AFASES 2018

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This paper presents two simple implementations of blade element method used for propeller performance calculation-Blade Element Momentum Theory and Joukowsky method based on a simple vortex model. In principle, both methods require division of the blade of the propeller into finite number of sections (i.e. calculation points), over which a 2D flow is assumed. The focus of this paper is to investigate the dependency of the calculated solution on the number of sections and comparison of both methods. For this purpose, three propeller geometries were chosen and a simple method used for comparison was developed. The calculation was performed in LabVIEW interface implementing MATLAB code.

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“…A mathematical modeling of the rotor is often conducted using the blade element theory (BEM) [19,20] and blade element momentum theory (BEMT) [21,22] which is a modification of the latter. Other methods such as actuator disks [23], a virtual blade model [24] or the Timoshenko beam theory are also used to account for aeroelastic effects [25]. An interesting study of transient loads and blade deformations on coaxial rotor systems using the coupled method (computational fluid dynamics and computational structural dynamics) is presented in [26].…”

Section: Introductionmentioning

confidence: 99%

Numerical calculations of the autorotating rotor under transient conditions

Czyż¹,

Kazimierska²,

Karpiński

et al. 2021

J. Phys.: Conf. Ser.

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It is necessary to evaluate the performance of the main rotor in design stages of a rotorcraft to obtain the assumed lift force and low aerodynamic drag. This paper presents the CFD numerical analysis of the autorotating rotor under transient conditions. Auto-rotation is particularly important in the case of gyrocopters, while in the case of helicopters it is related to flight safety. The calculations allowed us to obtain aerodynamic forces and torque as a function of rotor azimuth for individual rotor blades. The analysis was performed for a rotor tilted by 15 degrees toward the airflow direction. A geometric model was created for the calculations and then a computational model was created in Ansys Fluent software. The k-ω SST model was adopted as the turbulence model which considers the turbulence kinetic energy and its unit dissipation. The obtained results are presented in a rotor and flow coordinate system.

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Main rotor-body action for virtual blades model

Cited by 10 publications

References 5 publications

Optimization of SUAV’s propeller in a hover

Optimization of SUAV’s propeller in a hover

Investigation of Two 2d Propeller Calculation Methods and the Dependency of the Solution in Relation to the Number of Calculation Points

Numerical calculations of the autorotating rotor under transient conditions

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