Closed-form analytical approach for calculating noise contours of directive aircraft noise sources (2023)
Journal Article
of directive aircraft noise sources. AIAA journal, https://doi.org/10.2514/1.J062033

This paper extends the simplified airport noise model Rapid Aviation Noise Evaluator (RANE) [Torija et al., Journal of the Acoustical Society of America, Vol. 141, No. 2, 2017, pp. 981–995], adding capability of including fully nonisotropic noise sou... Read More about Closed-form analytical approach for calculating noise contours of directive aircraft noise sources.

Requirements for Drone Operations to Minimise Community Noise Impact (2022)
Journal Article
Ramos-Romero, C., Green, N., Roberts, S., Clark, C., & Torija, A. J. (2022). Requirements for Drone Operations to Minimise Community Noise Impact. International Journal of Environmental Research and Public Health, 19(15), 9299. https://doi.org/10.3390/ijerph19159299

The number of applications for drones under R&D have growth significantly during the last few years; however, the wider adoption of these technologies requires ensuring public trust and acceptance. Noise has been identified as one of the key concerns... Read More about Requirements for Drone Operations to Minimise Community Noise Impact.

Generation of noise exposure contours for eVTOL aircraft including transition (2022)
Presentation / Conference
Amargianitakis, D., Self, R., Proenca, A., Torija Martinez, A., & Synodinos, A. (2022, June). Generation of noise exposure contours for eVTOL aircraft including transition. Presented at 28th AIAA/CEAS Aeroacoustics 2022 Conference, Southampton, UK

With the advent of the Urban Air Mobility (UAM) sector, a wide variety of concepts have emerged in academic studies and industry preliminary designs. The majority of these concepts sport Vertical Takeoff and Landing (VTOL) capabilities taking advanta... Read More about Generation of noise exposure contours for eVTOL aircraft including transition.

Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact (2022)
Presentation / Conference
Casagrande Hirono, F., Torija Martinez, A., Elliott, A., Taylor, J., Grimshaw, S., & Lefas, D. (2022, June). Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact. Presented at 28th AIAA/CEAS Aeroacoustics 2022 Conference, Southampton, UK

This paper discusses the aeroacoustic aspects of the design, construction and testing of an all-electric ducted fan propulsion module for future electric aircraft. An overview of the propulsor aerodynamic design is provided. Acoustic measurements mad... Read More about Aeroacoustic design and optimisation of an all-electric ducted fan propulsion module for low-noise impact.

Investigation of Metrics for Assessing Human Response to Drone Noise (2022)
Journal Article
Torija, A. J., & Nicholls, R. K. (2022). Investigation of Metrics for Assessing Human Response to Drone Noise. International Journal of Environmental Research and Public Health, 19(6), 3152. https://doi.org/10.3390/ijerph19063152

Novel electric air transportation is emerging as an industry that could help to improve the lives of people living in both metropolitan and rural areas through integration into infrastructure and services. However, as this new resource of accessibili... Read More about Investigation of Metrics for Assessing Human Response to Drone Noise.

Study on fair and equitable distribution of aircraft at Gatwick (2022)
Report
Torija Martinez, A., Clark, C., Lavia, L., Manuel, G., & Lomax, C. Study on fair and equitable distribution of aircraft at Gatwick

Fair and Equitable Dispersion (FED) was introduced in 2015 as an aspirational objective among others, by communities affected by noise from aircraft using London’s Gatwick Airport. The airport’s Noise Management Board (NMB) was established as a resul... Read More about Study on fair and equitable distribution of aircraft at Gatwick.

Psychoacoustic modelling of rotor noise (2022)
Journal Article
Torija, A. J., Li, Z., & Chaitanya, P. (2022). Psychoacoustic modelling of rotor noise. ˜The œJournal of the Acoustical Society of America (Online), 151(3), 1804-1815. https://doi.org/10.1121/10.0009801

The aviation sector is rapidly evolving with more electric propulsion systems and a variety of new technologies of vertical take-off and landing manned and unmanned aerial vehicles. Community noise impact is one of the main barriers for the wider ado... Read More about Psychoacoustic modelling of rotor noise.

Generation and analysis of artificial warning sounds for electric scooters (2021)
Report
Torija Martinez, A., Elliott, A., Harris, L., Podwinska, Z., Welham, C., Nicholls, R., …Williams, D. Generation and analysis of artificial warning sounds for electric scooters

• emTransit B.V (Dott) is a European mobility operator currently operating over 30,000 electric scooters in Belgium, France, Germany, Italy, Poland and now the UK. The company aims to expand its UK operations and has recently won a tender for the Tra... Read More about Generation and analysis of artificial warning sounds for electric scooters.

An investigation into human response to unmanned aerial vehicle noise (2021)
Journal Article
noise. NOISE-CON proceedings, 577-588. https://doi.org/10.3397/IN-2021-1570

It is predicted that urban air mobility, including the use of small to medium sized unmanned aerial vehicle (UAV) delivery systems, will be introduced into cities across the globe within the next 15 years. It is known, however, that noise is one of t... Read More about An investigation into human response to unmanned aerial vehicle noise.

Psychoacoustic analysis of contra-rotating propeller noise for unmanned aerial vehicles (2021)
Journal Article
Torija Martinez, A. J., Paruchuri, C., & Zhengguang, L. (2021). Psychoacoustic analysis of contra-rotating propeller noise for unmanned aerial vehicles. ˜The œJournal of the Acoustical Society of America (Online), 149(2), 835-846. https://doi.org/10.1121/10.0003432

Unmanned aerial vehicle (UAV) technologies are rapidly advancing due to the unlimited number of applications from parcel delivery to people transportation. As the UAV market expands, community noise impact will become a significant problem for public... Read More about Psychoacoustic analysis of contra-rotating propeller noise for unmanned aerial vehicles.

A psychoacoustic approach to building knowledge about human response to noise of Unmanned Aerial Vehicles (2021)
Journal Article
Torija Martinez, A., & Clark, C. (2021). A psychoacoustic approach to building knowledge about human response to noise of Unmanned Aerial Vehicles. International Journal of Environmental Research and Public Health, 18(2), 682. https://doi.org/10.3390/ijerph18020682

We are on the cusp of a revolution in the aviation sector, driven by the significant progress on electric power and battery technologies, and autonomous systems. Several industry leaders and governmental agencies are currently investigating the use o... Read More about A psychoacoustic approach to building knowledge about human response to noise of Unmanned Aerial Vehicles.

Drone noise, a new public health challenge?
Presentation / Conference
Torija Martinez, A. Drone noise, a new public health challenge?. Presented at Quiet Drones International e-Symposium on UAV/UAS Noise, Remote from Paris (France)

There is a rapidly growing interest in manned and unmanned aerial vehicles of different size from small multi-rotor drones to Urban Air Mobility (UAM) vehicles. With the projected expansion of the sector, for a variety of applications from parcel del... Read More about Drone noise, a new public health challenge?.

Metrics for assessing the perception of drone noise
Presentation / Conference
Torija Martinez, A., & Li, Z. Metrics for assessing the perception of drone noise. Presented at e-Forum Acusticum 2020, Online

Unmanned Aerial Vehicle (UAV) technology is rapidly
advancing, and therefore, the potential for UAV use
seems almost unlimited at this stage. Diverse UAV
stakeholders are currently exploring the feasibility of
different UAV applications for monit... Read More about Metrics for assessing the perception of drone noise.

Closed-form analytical approach for calculating noise contours of directive aircraft noise sources
Presentation / Conference
Amargianitakis, D., Self, R., Torija Martinez, A., Proenca, A., & Synodinos, A. Closed-form analytical approach for calculating noise contours of directive aircraft noise sources. Presented at AIAA Aviation 2021 Forum, Virtual Event

This paper comes as an update to the simplified airport noise model RANE (Rapid Aviation Noise Evaluator) adding capability of including fully non-isotropic noise sources. RANE v2 is developed as a part of multidisciplinary acoustic assessment of nov... Read More about Closed-form analytical approach for calculating noise contours of directive aircraft noise sources.