Investigation of performance, noise and detectability characteristics of small-scale remotely piloted vehicle /RPV/ propellers

Janakiram, D. S.

doi:10.2514/6.1981-2005

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…In the last few years, the reduction of noise from the propulsive system of small rotors has been the subject of several works in the literature [32,[34][35][36][37][38][39][40][41]. Propeller noise reduction requires particular attention in the design process because the achievement of an aeroacoustic optimum may affect the generation of aerodynamic forces.…”

Section: Introductionmentioning

confidence: 99%

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Candeloro

Ragni

Pagliaroli

2022

Fluids

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In the last decade, the drone market has grown rapidly for both civil and military purposes. Due to their versatility, the demand for drones is constantly increasing, with several industrial players joining the venture to transfer urban mobility to the air. This has exacerbated the problem of noise pollution, mainly due to the relatively lower altitude of these vehicles and the proximity of their routes to extremely densely populated areas. In particular, both the aerodynamic and aeroacoustic optimization of the propulsive system and of its interaction with the airframe are key aspects of unmanned aerial vehicle design that can signify the success or the failure of their mission. The industrial challenge involves finding the best performance in terms of loading, efficiency and weight, and, at the same time, the most silent configuration. For these reasons, research has focused on an initial localization of the noise sources and, on further analysis, of the noise generation mechanism, focusing particularly on directivity and scattering. The aim of the present study is to review the noise source mechanisms and the state-of-the-art control strategies, available in the literature, for its suppression, focusing especially on the fluid-dynamic aspects of low Reynolds numbers of the propulsive system and on the interaction of the propulsive system flow with the airframe.

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Section: Introductionmentioning

confidence: 99%

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Candeloro

Ragni

Pagliaroli

2022

Fluids

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“…As reported in literature, the greater benefit is achieved through the usage of brushless motors [18]. In the last few years, the reduction of noise from the propulsive system of small rotors has been the subject of several works in literature [18][19][20][21][22][23][24][25][26]. Propeller noise reduction requires particular care in the design process because the achieviement of an aeroacoustic optimum may affect the generation of aerodynamic forces.…”

Section: Introductionmentioning

confidence: 99%

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Candeloro¹,

Pagliaroli²,

Ragni³

et al. 2019

Preprint

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In the last decade, the drone market has grown rapidly for both civil and military purposes. Due to their versatility, drones demand is constantly increasing, with several industrial players joining the venture to transfer urban mobility to the air. This has exacerbated the problem of noise pollution, mainly due to the relatively lower altitude of these vehicles and to the proximity of their routes to extremely densely populated areas. In particular, both the aerodynamic and aeroacoustic optimization of the propulsive system and of its interaction with the airframe are key aspects of the design of aerial vehicles for the success or the failure of their mission. The industrial challenge involves finding the best performance in terms of loading, efficiency and weight, and, at the same time, the most silent configuration. For this reason, research has focused on an initial localization of the noise sources and, on further analysis, of the noise generation mechanism, focusing particularly on directivity and scattering. The aim of the present study is to review the noise source mechanisms and the state-of-the-art technologies available in literature for its suppression, focusing especially on the fluid-dynamic aspects of low Reynolds numbers of the propulsive system and on the interaction of the propulsive-system flow with the airframe.

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Unconventional Application of Serrated Trailing Edges for Quieter Propeller Drones

Candeloro,

Ragni,

Pagliaroli

2024

30th AIAA/CEAS Aeroacoustics Conference (2024)

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Investigation of performance, noise and detectability characteristics of small-scale remotely piloted vehicle /RPV/ propellers

Cited by 3 publications

References 2 publications

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Small-Scale Rotor Aeroacoustics for Drone Propulsion: A Review of Noise Sources and Control Strategies

Unconventional Application of Serrated Trailing Edges for Quieter Propeller Drones

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