Framework for Predicting Noise–Power–Distance Curves for Novel Aircraft Designs

Synodinos, Athanasios P.; Self, Rod H.; Torija, Antonio J.

doi:10.2514/1.c034466

Cited by 21 publications

(31 citation statements)

References 20 publications

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“…Once the appropriate baseline cases are defined, then the fleet-level environmental benefits of technological changes within the design space (of each baseline case) can be examined. For the specific case of aircraft noise, the framework developed by Synodinos et al (2017) can be used for generating noise-power-distance (NPD) data for novel aircraft designs, which then can be used by airport noise models (e.g. Torija et al, 2017)) for investigating the potential benefit of such designs for reducing the impact of aviation noise around airports.…”

Section: Discussionmentioning

confidence: 99%

“…Torija et al, 2017)) for investigating the potential benefit of such designs for reducing the impact of aviation noise around airports. The framework developed by Synodinos et al (2017) combines noise prediction methods for individual aircraft noise sources with aircraft noise and performance data to estimate noise variations with respect to a baseline case, where noise levels are known.…”

Section: Discussionmentioning

confidence: 99%

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Aircraft classification for efficient modelling of environmental noise impact of aviation

Torija

Self

2018

Journal of Air Transport Management

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With the environmental externalities of civil aviation under unprecedented scrutiny, and with the projected significant increase in air traffic demand over the next few decades, fleet-level studies are required to assess the potential benefit of novel aircraft technologies and operational procedures for minimising environmental impact of aviation. Using a statistical classification process, the UK commercial aircraft fleet is reduced to four representative-in-class aircraft on the basis of aircraft physical characteristics, and aircraft noise and engine exhaust emissions. These four representative aircraft, that appropriately capture the noise and emissions characteristics for each category within the UK commercial fleet, are also selected to be used as baseline cases for the high-level assessment of the environmental benefit of novel aircraft technologies. For the particular case of aviation noise, the modelling tools are highly sensitive to the number of aircraft types in the flight schedule. A reduction of about 80% in computational time with relatively minor decrease in accuracy (between-4% and +5%) is observed when the whole aircraft fleet is replaced with the four representative-in-class aircraft for computing noise contours. Therefore, the statistical classification and selection of representative-in-class aircraft presented in this paper is a valid approach for the rapid and accurate computation of a large number of exploratory cases to assess aviation noise reduction strategies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Aircraft classification for efficient modelling of environmental noise impact of aviation

Torija

Self

2018

Journal of Air Transport Management

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“…a new aircraft is defined in terms of its equivalent operations of the current baseline aircraft), RANE was developed to be coupled with technology evaluators (e.g. [22,23]), which will provide NPD records for novel aircraft concepts. Because, among others, the different frequency spectra, directivity characteristics, and operational behavior of novel aircraft as compared to current types, the RANE's approach seems more adequate to address policy decisions about which future technology platforms would ensure a better environmental performance.…”

Section: Discussion On Advantages and Limitations Of Simplified Airpomentioning

confidence: 99%

Airport noise modelling for strategic environmental impact assessment of aviation

2018

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Air p o r t n oi s e m o d ellin g fo r s t r a t e gi c e n vi r o n m e n t al i m p a c t a s s e s s m e n t of a vi a tio n Torij a M a r ti n e z, AJ, S elf, R H a n d Flin d ell, I H h t t p:// dx. doi.o r g/ 1 0. 1 0 1 6/j. a p a c o u s t. 2 0 1 7. 1 0. 0 1 7 Ti t l e Air p o r t n oi s e m o d ellin g fo r s t r a t e gi c e n vi ro n m e n t al i m p a c t a s s e s s m e n t of a vi a tio n A u t h o r s Torija M a r ti n e z, AJ, S elf, R H a n d Fli n d ell, IH Typ e Articl e U RL This ve r sio n is a v ail a bl e a t : h t t p:// u sir.s alfo r d. a c. u k/id/ e p ri n t/ 5 3 1 9 8/ P u b l i s h e d D a t e 2 0 1 8This section overviews some of the simplified airport noise models more often cited in the literature, describing their approach for computing noise outputs.

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“…Establishment of required parameters for the e-A320s noise impact assessment A. Methodology overview Noise impact assessment of the e-A320s is performed using the noise prediction framework for novel aircraft designs proposed by Synodinos et al [18]. In summary, the framework estimates aircraft noise variation arising from operational and/or technological changes with respect to a baseline scenario for which community noise is known.…”

Section: B Estimation Of Nacelle Surface Areamentioning

confidence: 99%

Preliminary Noise Assessment of Aircraft with Distributed Electric Propulsion

Synodinos

Self

Torija

2018

2018 AIAA/CEAS Aeroacoustics Conference

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Electric and hybrid-electric propulsion technologies in aviation are becoming more attractive for aviation stakeholders not only due to the resulting reduction or elimination of the dependency on oil, whose availability and price are uncertain, but also because they are more reliable and efficient than traditional internal combustion engines. Moreover, combined with distributed electric propulsion (DEP), these technologies have shown potential in significantly reducing civil aircraft community noise impact and contribute towards delivering the strict mid-to-long-term environmental goals set by organisations worldwide, such as ACARE and NASA. This paper examines the noise impact of a concept tube and wing aircraft that falls in the A320 category and features various DEP systems using different power supply units (turboshaft engines or batteries) and number of electric propulsors. Meanwhile, considerations required for the transition from conventional to electric propulsion are discussed. Estimated Noise-Power-Distance (NPD) curves and noise exposure contour maps are also presented. It is concluded that indeed, the propulsors' number is a key parameter for optimising the environmental performance of DEP aircraft and hence maximising the noise benefits. Also, it is shown that based on the entry into service year (2035) technology, totally electric aircraft tend to have a larger noise footprint than aircraft using hybrid electric propulsion systems.

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Framework for Predicting Noise–Power–Distance Curves for Novel Aircraft Designs

Abstract: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

Cited by 21 publications

References 20 publications

Aircraft classification for efficient modelling of environmental noise impact of aviation

Aircraft classification for efficient modelling of environmental noise impact of aviation

Airport noise modelling for strategic environmental impact assessment of aviation

Preliminary Noise Assessment of Aircraft with Distributed Electric Propulsion

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