Flight Test of UAV with DBD-Pa Flow Control

Yanagawa, Hiroshi; Goto, Azusa; Kato, Hitoshi; Sekimoto, Satoshi; Fujii, Kozo

doi:10.2514/6.2021-1942

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…Considering the DBD-PA and UAV set up, finding a more effective electrode layout (i.e., appropriate electrode span length and its location), and using the stronger DBD-PA system are both important for obtaining more convincing results. Flow visualization with a CCD camera using tufts over the wing surface [41] may be helpful for specifying PA-ON flights. It should be noted that some of these may increase the weight of the UAV.…”

Section: Evaluation Of Dbd-pa Flow Controlmentioning

confidence: 99%

In-Flight Demonstration of Stall Improvement Using a Plasma Actuator for a Small Unmanned Aerial Vehicle

et al. 2022

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The flow control capability (especially for separation control) of a dielectric-barrier-discharge plasma actuator (DBD-PA) has been investigated extensively. However, these studies have been conducted under ideal conditions, such as wind tunnels and computational environments, and limited studies have investigated the effects of plasma actuators in an actual environment. In this study, the flow control capability of a DBD-PA under natural and in-flight conditions was investigated via field flight tests using an unmanned aerial vehicle (UAV). The DBD-PA driving system was constructed with a small high-voltage power supply on a 2-m-span UAV. With the support of an autonomous flight system, the pitch angle gradually increased as the airspeed decreased, and the stall occurred from the cruise state. This flight procedure was conducted with the DBD-PA on or off, and 246 pairs of flights were operated. The results revealed that a flight state with a higher pitch angle and lower airspeed occurred when DBD-PA was switched on. In addition, the moment of stall was quantitatively determined from the flight log, and it was confirmed that the maximum pitch angle when DBD-PA was switched on tended to be larger than that when DBD-PA was switched off. These results indicate that flow control with a DBD-PA on a 2-m-span UAV was effective in natural and in-flight situations.

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Section: Evaluation Of Dbd-pa Flow Controlmentioning

confidence: 99%

In-Flight Demonstration of Stall Improvement Using a Plasma Actuator for a Small Unmanned Aerial Vehicle

et al. 2022

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Improved performance of polyimide Cirlex‐based dielectric barrier discharge plasma actuators for flow control

Nunes-Pereira

Rodrigues

Abdollahzadeh

et al. 2021

Polymers for Advanced Techs

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Dielectric barrier discharge (DBD) plasma actuators are simple electrohydrodynamic devices, which are able to provide effective aerodynamic control. One of the main components of these devices is the thin dielectric layer, which allows to separate and prevent the arc between the high‐voltage electrodes. Different materials can be used as dielectric layer to reduce the power consumption or boost the flow controlling effect of the actuators. In this context, this report presents a comparative study of two commercial polyimides, Kapton and Cirlex, used as dielectric layer of surface DBD plasma actuators. The electrical, dielectric, mechanical, electromechanical, and thermal properties were obtained to evaluate overall performance. It was verified that Cirlex (8.3 W) consumes less power than Kapton (21.3 W) to generate higher induced flow velocity of ≈3.4 m/s for an input voltage of 11 kVpp and 24 kHz. During one AC cycle at 11 kVpp the charge transferred for Cirlex (70 nC) is lower than for Kapton (100 nC), as well as the dielectric breakdown voltage to ignite the plasma discharge, 1.5 and 2.2 kVpp, respectively. The Cirlex DBD presents a higher voltage operation limit (at least 14 kVpp) and a more regular plasma discharge, which results in a more homogenous thermal profile and temperature distribution during its operation. The Cirlex actuator delivered higher mechanical power (6.2 mW) and achieved higher electromechanical efficiency (0.004%). The polyimide Cirlex proved to be a suitable alternative for Kapton to fabricate DBD plasma actuators for flow control with improved performance.

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Quantification of Aerodynamic Effects of PSJA on Small UAV in Flat Turn with Side Force Fin

Ogawara¹,

Kawahara²,

Shingin³

et al. 2023

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCE

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Flight Test of UAV with DBD-Pa Flow Control

Cited by 4 publications

References 10 publications

In-Flight Demonstration of Stall Improvement Using a Plasma Actuator for a Small Unmanned Aerial Vehicle

In-Flight Demonstration of Stall Improvement Using a Plasma Actuator for a Small Unmanned Aerial Vehicle

Improved performance of polyimide Cirlex‐based dielectric barrier discharge plasma actuators for flow control

Quantification of Aerodynamic Effects of PSJA on Small UAV in Flat Turn with Side Force Fin

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