All Outputs (8)

Boundary Layer Ingestion Ducted Fan: Aeroacoustic and Psychoacoustic Insights (2024)
Conference Proceeding
Ahmed, F., Ramos-Romero, C. A., Torija Martinez, A. J., & Azarpeyvand, M. (2024). Boundary Layer Ingestion Ducted Fan: Aeroacoustic and Psychoacoustic Insights. . https://doi.org/10.2514/6.2024-3379

An in-depth experimental study was conducted to investigate the noise characteristics of a ducted fan ingesting an adverse pressure gradient turbulent boundary layer, typical of those encountered in novel airframe-integrated propulsion systems. To ga... Read More about Boundary Layer Ingestion Ducted Fan: Aeroacoustic and Psychoacoustic Insights.

Synthesis and Auralisations of Quadcopter Flyovers for Psychoacoustic Assessment. (2024)
Conference Proceeding
Ramos-Romero, C. A., Green, M., & Torija Martinez, A. J. (2024). Synthesis and Auralisations of Quadcopter Flyovers for Psychoacoustic Assessment. . https://doi.org/10.2514/6.2024-3272

This paper describes a methodology to generate auralisations of quadcopter flyovers from recordings of hovering operations. The primary focus of this investigation is reproducing changes in the tonal components at the blade passing frequencies and th... Read More about Synthesis and Auralisations of Quadcopter Flyovers for Psychoacoustic Assessment..

Acoustic and Psychoacoustic Characterisation of Unmanned Aircraft Systems as a Function of Vehicle Mass and Flight Procedure (2024)
Conference Proceeding
Torija Martinez, A. J., Ramos-Romero, C. A., & Green, N. (2024). Acoustic and Psychoacoustic Characterisation of Unmanned Aircraft Systems as a Function of Vehicle Mass and Flight Procedure. . https://doi.org/10.2514/6.2024-3235

Previous studies have found the noise emission of Unmanned Aircraft Systems (UAS) highly dependent on the vehicle mass and flight procedure. These changes in noise emission, as well as the position of the UAS relative to the receiver, have led to cha... Read More about Acoustic and Psychoacoustic Characterisation of Unmanned Aircraft Systems as a Function of Vehicle Mass and Flight Procedure.

Aerodynamics and Acoustics of Asymmetric Propellers With Uneven Blade Spacing (2024)
Conference Proceeding
Usov, D., Koning, D., Chronis, T., Filippone, A., Akiwate, D., & Torija Martinez, A. J. (2024). Aerodynamics and Acoustics of Asymmetric Propellers With Uneven Blade Spacing. . https://doi.org/10.2514/6.2024-3265

The presented work aims to establish whether asymmetric propellers with uneven blade spacing offer any acoustic benefits over a conventional propeller with identical blade geometry. An experimental investigation was conducted to measure static thrust... Read More about Aerodynamics and Acoustics of Asymmetric Propellers With Uneven Blade Spacing.

Developing a noise and soundscape conceptual framework for fair and equitable distribution of aircraft (2024)
Conference Proceeding
Lavia, L. R., Torija Martinez, A. J., & Clark, C. (2024). Developing a noise and soundscape conceptual framework for fair and equitable distribution of aircraft.

Fair and Equitable Distribution (FED) of aircraft, was introduced in 2015 as an aspirational objective by communities affected by aircraft noise from Gatwick Airport, the third-busiest airport by total passenger traffic in the UK. This paper present... Read More about Developing a noise and soundscape conceptual framework for fair and equitable distribution of aircraft.

sUAS Noise characterization during hovering operations (2023)
Conference Proceeding
Ramos-Romero, C., Green, N., Asensio, C., & Torija, A. J. (2023). sUAS Noise characterization during hovering operations.

In the framework of the EPSRC-UK DroneNoise project, a multi-channel methodology for small Unmanned Aircraft Systems (sUAS) noise measurement was applied under controlled conditions. The measurement campaign was carried out in August 2022 in Edzell,... Read More about sUAS Noise characterization during hovering operations.

Assessment of Drone Noise Within Urban Soundscapes (2023)
Conference Proceeding
Nicholls, R., Torija, A. J., Green, N., & Ramos Romero, C. (2023). Assessment of Drone Noise Within Urban Soundscapes. . https://doi.org/10.3397/in_2022_0429

Drones have the potential to be implemented in the infrastructure of metropolitan areas to provide services to the public such as delivery, maintenance, and even blue light services. The scope for drone capability is large, but this comes with the ri... Read More about Assessment of Drone Noise Within Urban Soundscapes.

On the CO2 and noise emissions forecast in future aviation scenarios in the UK (2016)
Conference Proceeding
Torija, A. J., Self, R., & Flindell, I. (2016). On the CO2 and noise emissions forecast in future aviation scenarios in the UK.

Aircraft operations have a significant impact on local air quality, climate change, fuel consumption and noise around airports. In order to reach emission targets set by aviation agencies (e.g. ACARE), to reduce environmental impact and to ensure a s... Read More about On the CO2 and noise emissions forecast in future aviation scenarios in the UK.