Ten questions concerning the use of drones in urban environments

S Watkins, J Burry, A Mohamed, M Marino… - Building and …, 2020 - Elsevier
The backdrop to the rapidly expanding use of drones is described, including development of
drone technology, followed by an overview of current civilian use, focusing on use in and …

Aerodynamic interaction between tandem overlapping propellers in eVTOL airplane mode flight condition

A Zanotti, D Algarotti - Aerospace Science and Technology, 2022 - Elsevier
The architecture of new electric aircraft concepts (eVTOLs) for urban air mobility is typically
characterised by multi-propellers in tandem configurations with different degrees of rotor …

Aerodynamic interaction effects between propellers in typical eVTOL vehicle configurations

TCA Stokkermans, D Usai, T Sinnige, LLM Veldhuis - Journal of Aircraft, 2021 - arc.aiaa.org
Many electric vertical takeoff and landing concepts are characterized by nontraditional
vehicle layouts with distributed propellers. Two propeller interaction types were …

Psychoacoustic analysis of contra-rotating propeller noise for unmanned aerial vehicles

AJ Torija, P Chaitanya, Z Li - The Journal of the Acoustical Society of …, 2021 - pubs.aip.org
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 …

[HTML][HTML] On the optimum separation distance for minimum noise of contra-rotating rotors

P Chaitanya, P Joseph, SD Prior, AB Parry - Journal of Sound and Vibration, 2022 - Elsevier
Overlapping rotor systems are currently used on some urban flight vehicles and will become
increasingly common in future electric propulsion, since they provide one of the most …

Psychoacoustic modelling of rotor noise

AJ Torija, Z Li, P Chaitanya - The Journal of the Acoustical Society of …, 2022 - pubs.aip.org
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 …

A modular multirotor unmanned aerial vehicle design approach for development of an engineering education platform

D Kotarski, P Piljek, M Pranjić, CG Grlj, J Kasać - Sensors, 2021 - mdpi.com
The development of multirotor unmanned aerial vehicles (UAVs) has enabled a vast number
of applications. Since further market growth is expected in the future it is important that …

Numerical investigation of the rotor-rotor aerodynamic interaction for eVTOL aircraft configurations

R Piccinini, M Tugnoli, A Zanotti - Energies, 2020 - mdpi.com
The rotor-rotor aerodynamic interaction is one of the key phenomena that characterise the
flow and the performance of most of the new urban air mobility vehicles (eVTOLs) developed …

Experimental and computational investigation of stacked rotor performance in hover

G Jacobellis, R Singh, C Johnson, J Sirohi… - Aerospace Science and …, 2021 - Elsevier
Experiments were performed on a 1.108 m diameter coaxial, co-rotating rotor, also called a
stacked rotor, in hover. The performance of the stacked rotor was measured at various …

Method for characterization of a multirotor UAV electric propulsion system

P Piljek, D Kotarski, M Krznar - Applied Sciences, 2020 - mdpi.com
Due to their abilities, multirotor unmanned aerial vehicles (UAVs) can be used in various
missions that require complex and precise movements, so they are a typical representative …