Assessment of community noise for a medium-range airplane with open-rotor engines

Kopiev, V. F.; Shur, M. L.; Travin, Andrey; Belyaev, I. V.; Zamtfort, B. S.; Medvedev, Yu. V.

doi:10.1134/s1063771017060069

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…In terms of numerical parametric works, Kopiev et al (2017) studied the community noise of CROR engines. The methodology followed was high fidelity simulations.…”

Section: Contrarotating Open Rotorsmentioning

confidence: 99%

Noise of Future Aircraft Propulsion: Sources and Design Considerations

Protopapadakis¹,

Gkoutzamanis²,

Vouros³

et al. 2022

Proceedings of Global Power &Amp; Propulsion Society

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This paper attempts to reduce the gap, when it comes to future aircraft concepts noise and aeroacoustics, and at the same time introduce basic noise aspects for people unfamiliar to it. This is performed by taking into account the following four stages: Identification of conventional aircraft noise sources, overview of the aeroacoustics of future aircraft configurations, derivation of conceptual design considerations for noise issues, and finally, insight on the impact of technology advancements on certification. More specifically, a holistic overview of the aeroacoustics of aircraft was performed. The noise sources were described and made available for those unacquainted with the subject. Aeroacoustic behavior of ContraRotating Open Rotors, Boundary Layer Ingestion and Distributed Propulsion concepts was studied trough the most recent and relevant literature. The phenomena causing noise were highlighted, and the differences between conventional and future designs detected. It was found that generally noise sources are similar, but the intensity of some can be significantly altered. Early design phase guidelines were extracted for each of the concepts. The design considerations are grouped into a matrix showing the relative effect of each on noise emissions. With these guidelines, it is possible to perform design choices in the conceptual level of fidelity for future aircraft concepts. Furthermore, certification aspects and observations considering its future development are presented. Noise emissions are expected to change, and thus certification must be adapted to it. Furthermore, in this quick advancing technology field, virtual certification is advised to be used.

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“…In terms of numerical parametric works, Kopiev et al (2017) studied the community noise of CROR engines. The methodology followed was high fidelity simulations.…”

Section: Contrarotating Open Rotorsmentioning

confidence: 99%

Noise of Future Aircraft Propulsion: Sources and Design Considerations

Protopapadakis¹,

Gkoutzamanis²,

Vouros³

et al. 2022

Proceedings of Global Power &Amp; Propulsion Society

View full text Add to dashboard Cite

show abstract

“…One of the most important requirements for pumping equipment along with efficiency is low noise level. High level of noise could be caused by design of the pump, unsteady flow, vortex flow fields, interaction of flow with flow part elements [1][2][3][4][5][6]. It is important to have an instrument for assessment of the reasons and sources where noise begins.…”

Section: Introductionmentioning

confidence: 99%

Assessment of acoustic and pulsation characteristics of centrifugal pumps

et al. 2019

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Numerical investigations of unsteady viscous flow in centrifugal pumps were conducted in this paper. Verification of numerical approach was done. Hydraulic components of the pump were modernized with the purpose to improve their acoustic characteristics. Modernization was held on the base of isotropic turbulence noise measuring techniques. Results were confirmed by experiment. Pressure pulsations were studied in a flow between rotating impeller and stator for initial and improved flowing parts. As a result of numerical research, various impellers with different blade outlet angles were designed. During optimization, the optimal blade outlet angle was found, which provides increased vibroacoustic characteristics while maintaining a high level of efficiency.

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Study of an aviation opposed piston engine noise

Moshkov

2022

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Assessment of community noise for a medium-range airplane with open-rotor engines

Cited by 8 publications

References 18 publications

Noise of Future Aircraft Propulsion: Sources and Design Considerations

Noise of Future Aircraft Propulsion: Sources and Design Considerations

Assessment of acoustic and pulsation characteristics of centrifugal pumps

Study of an aviation opposed piston engine noise

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