Closed-form analytical approach for calculating noise contours of directive aircraft noise sources

Amargianitakis, Daniel C.; Self, Rod H.; Torija, Antonio J.; Proenca, Anderson; Synodinos, Athanasios P.

doi:10.2514/6.2021-2175

Cited by 1 publication

(2 citation statements)

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“…As mentioned, noise exposure contours are typically generated using high-fidelity airport noise models specifically developed for full-scale aircraft and operations around airports. In this paper, the in-house airport noise model RANE (Rapid Aviation Noise Evaluator) [4,12] is used. Using the previously derived NPD curves single event noise exposure contours are generated.…”

Section: Results Iii: Estimating Noise Contoursmentioning

confidence: 99%

“…Previously mentioned airport noise tools may then be used to assess the noise on the ground due to UAV single operation or even fleet operation over the duration of a full day for example. In combination with the capabilities of generating NPDs for propeller power air vehicles [3], and the airport noise tool RANE v2 [4], the global assessment of noise exposure of such UAV networks.…”

Section: Introductionmentioning

confidence: 99%

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Measurement and Modelling of Noise-Power-Distance Curves of a Fixed-Wing UAV

Amargianitakis

Self

Proenca

et al. 2022

28th AIAA/CEAS Aeroacoustics 2022 Conference

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This paper presents an investigation into the noise produced by an unmanned aerial vehicle (UAV). The platform used, 'Spotter', is a fixed-wing, light UAV comprising a 4-meter wingspan. Spotter was originally designed to perform long-endurance, all-weather patrol missions in coastal and maritime environments. This vehicle has been continuously upgraded and is now used in a broader range of applications. Increasing demand by research and industrial partners, as well as the UK Civil Certification Authority (CAA) has led to a survey of the Spotter's in-flight noise footprint. The CAA Operating Safety Case of this platform is currently being updated and the major findings are presented in the paper. Preliminary results were obtained in flight tests performed at the Draycot Aerodrome over two expeditions in the summer of 2021, in the UK. A series of flyovers, takeoff and landing operations were measured. Flyovers were performed at constant altitude at series of power settings, incrementing from low to maximum power output. These measurements are then used to generate Noise-Power-Distance curves for the Spotter UAV. Static directivity characteristics of the dual propeller setup were also measured, with intent of feeding into future airport exposure studies.

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Section: Results Iii: Estimating Noise Contoursmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%