Measurements of features of the ducted fan as a possible actuator of a multi-copter vehicle

Gebauer, Jan; Kočí, Petr

doi:10.1109/carpathiancc.2011.5945831

Cited by 2 publications

(1 citation statement)

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“…A minimal gap between the propeller and the shroud was set to 3 mm. The use of a smaller gap (less than one millimetre) between the propeller and the shroud will work similarly to the impeller model [40] where the closeness of the internal propeller and the inner surface of the impeller housing minimises turbulences created near the rotating propeller ends. Therefore, the lifting force will improve.…”

Section: Theory Of Shrouded Propellersmentioning

confidence: 99%

Propeller shrouding influence on lift force of mini unmanned quadcopter

Penkov¹,

Александров²

2017

Int. J. Automot. Mech. Eng.

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This article discusses the lift force generated by a mini unmanned aerial vehicle. Shrouded propellers were considered and analyses of shroud influence on lift force and energy saving were done. By help of laboratory experiments and computational fluid dynamics simulations (propeller velocity varied from 1000 rpm to 6000 rpm, shroud height from 20 mm to 60 mm, gap from 3 mm to 28 mm), it was shown that the shroud diameter influenced the rotor energy consumption up to 30% at velocities of more than 4000 rpm. With the increase shroud diameter (increase of distance between shroud and propeller borders), the lifting force increased. A gap of more than 30 mm practically did not influence the lifting force. Shroud height (from 20 mm to 60 mm, gap is 28 mm) also influenced the propeller efficiency (up to 10%) on small shroud heights (up to 30 mm). With the increase of the shroud height, the lift force decreased about 3% and then it increased up to 12%. From a value of about 50 millimetres, this influence will be unchanged but the total lifting force will be about 5% less in comparison with the force produced by propeller without shroud.

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Section: Theory Of Shrouded Propellersmentioning

confidence: 99%

Propeller shrouding influence on lift force of mini unmanned quadcopter

Penkov¹,

Александров²

2017

Int. J. Automot. Mech. Eng.

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Flight Characteristics of Quad Rotor Helicopter with Thrust Vectoring Equipment

Imamura¹,

Misawa²,

Hino³

2016

J. Robot. Mechatron.

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[abstFig src='/00280003/09.jpg' width=""300"" text='Thrust vectoring mechanisms for WRH' ] A quad rotor helicopter (QRH) is a radio controlled (RC) aircraft that tilts its attitude to generate a horizontal force component to move in a certain direction. Using autonomous control, the attitude control system tilts the airframe against disturbances, such as wind. Thus, the attitude of a flying QRH is always slanted. In this study, three types of deflecting thruster were compared to maintain the position and horizontal attitude of the QRH. The extra thrusters are tilted to generate a thrust against disturbances without causing the airframe to incline. It is suitable for precise measurements for which the airframe posture should remain horizontal.

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Measurements of features of the ducted fan as a possible actuator of a multi-copter vehicle

Cited by 2 publications

References 1 publication

Propeller shrouding influence on lift force of mini unmanned quadcopter

Propeller shrouding influence on lift force of mini unmanned quadcopter

Flight Characteristics of Quad Rotor Helicopter with Thrust Vectoring Equipment

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