Measurement of the Flow Field Generated by Multicopter Propellers

Czyż, Zbigniew; Karpiński, Paweł; Stryczniewicz, Wit

doi:10.3390/s20195537

Cited by 7 publications

(3 citation statements)

References 37 publications

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“…For instance, it can be applied as the coupling with rotating blade [25], in structural health monitoring (SHM) in buildings [26] or used by the side of highways, where the wake-induced vibration phenomena is observed by cars [27]. One of potential ways it can be the coupling of the system with unmanned aerial vehicles (UAVs) for powering the low-demanding sensors [28,29].…”

Section: Discussionmentioning

confidence: 99%

Performance Analysis of a Piezoelectric Energy Harvesting System

Ambrożkiewicz¹,

Czyż²,

Stączek³

et al. 2022

Adv. Sci. Technol. Res. J.

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This paper analyzes a piezoelectric system made of a smart lead zirconate material. The system is composed of a monolithic PZT (piezoelectric ceramic) plate made of a ceramic-based piezoelectric material. The experiment was conducted on a test stand with a GUNT HM170 wind tunnel and a special measurement system. The developed bluff-body shape mounted on an elastic beam with a piezoelectric was mounted on a mast with arms. Springs were fixed on the arms to limit the movement of the test object. Air flow velocity in the wind tunnel and forced vibration frequencies were changed during the tests. The recorded parameters were an output voltage signal from the piezoelectric element and linear accelerations at selected points of the test object. The highest energy efficiency of the tested system was specified from mechanical vibrations and air flow. The results of the tests are a resonance curve for the tested system and a correlation of RMS voltage and acceleration as a function of the velocity of air flow for the excitation frequency f ranging from 1 to 6 Hz. The tests specified the area where the highest output voltage under the given excitation conditions is generated.

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Section: Discussionmentioning

confidence: 99%

Performance Analysis of a Piezoelectric Energy Harvesting System

Ambrożkiewicz¹,

Czyż²,

Stączek³

et al. 2022

Adv. Sci. Technol. Res. J.

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“…Wind tunnel tests also allow the evaluation of aerodynamic interference of the aircraft [19] or measurements of aerodynamic interference of a hybrid aircraft with multirotor propulsion [20]. Wind tunnel testing can be extended by the measurement of the flow field around the test object using, for example, Particle Image Velocimetry (PIV) [21]. Unfortunately, wind tunnels often are used long support systems of models with a low level of damping, which affects the nature of the flow around the object and the generation of turbulence during the experiments.…”

Section: Introductionmentioning

confidence: 99%

Measurements of Aerodynamic Performance of the Fuselage of a Hybrid Multi-Rotor Aircraft with Autorotation Capability

Czyż

Karpiński

Skiba

et al. 2022

IREASE

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The design and optimization of aircraft structures need to be accompanied by the analysis of their aerodynamics. This paper presents numerical calculations and wind tunnel tests to determine the aerodynamic characteristics of the designed unmanned aircraft. The aim of the study was to analyze the aerodynamic performance of the designed hybrid unmanned aerial vehicle and its longitudinal stability. This unique design, i.e. a hybrid aircraft which is a combination of a gyrocopter and a multi-rotor aircraft has not been the object of research yet. The research object is a 1:1 scale model created by the rapid prototyping method. The research was a computational and experimental study. The ANSYS Fluent software was used for the calculations, and the computational mesh of the developed model consisted of 3.5 million tetrahedral elements. The numerical investigations were carried out using the created CFD model with a k-ω turbulence submodel. In addition, the obtained results made it possible to numerically analyze the forces acting on the individual components of the research object, which is a valuable extension of the wind tunnel tests. The experimental studies were performed in a closed-loop subsonic wind tunnel. Aerodynamic forces and moments were measured using a six-component force balance. The obtained results were compared to validate the developed numerical model. The research values describe the performance of the research object in terms of minimum drag force coefficient, maximum lift to drag ratio, and properties related to stability.

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“…The Particle Image Velocimetry method is useful for an experimental testing of propellers. This method was used in [ 29 ] to analyze propeller flow. Based on the wind tunnel tests, the distribution of velocity and its components in the vertical plane passing through the propeller axis were determined for several values of the angle of attack of the tested object for two different values of airflow velocity inside the wind tunnel.…”

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Performance Tests of the Propellers with Different Pitch for the Electric Propulsion System

Czyż

Karpiński

Skiba

et al. 2021

Sensors

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The geometry of a propeller is closely related to its aerodynamic performance. One of the geometric parameters of a propeller is pitch. This parameter determines the distance by which the propeller moves forward during one revolution. The challenge is to select a propeller geometry for electric propulsion in order to achieve the best possible performance. This paper presents the experimental results of the aerodynamic performance of the set of propellers with different pitch values. The tests were performed in a closed-circuit subsonic wind tunnel using a six-component force balance. The analyzed propellers were 12-inch diameter twin-blade propellers that were driven by a BLDC (brushless direct current) electric motor. The tests were performed under forced airflow conditions. The thrust and torque produced by the propeller were measured using a strain gauge. The analysis was performed for different values of the advance ratio which is the ratio of freestream fluid speed to propeller tip speed. Additionally, a set of electrical parameters was recorded using the created measurement system. The propeller performance was evaluated by a dimensional analysis. This method enables calculation of dimensionless coefficients which are useful for comparing performance data for propellers.

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Measurement of the Flow Field Generated by Multicopter Propellers

Cited by 7 publications

References 37 publications

Performance Analysis of a Piezoelectric Energy Harvesting System

Performance Analysis of a Piezoelectric Energy Harvesting System

Measurements of Aerodynamic Performance of the Fuselage of a Hybrid Multi-Rotor Aircraft with Autorotation Capability

Wind Tunnel Performance Tests of the Propellers with Different Pitch for the Electric Propulsion System

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