4 Contributo in Atti di Convegno (Proceeding)

4 Contributo in Atti di Convegno (Proceeding): [49726] Home page macrotipologia

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4.1 Contributo in Atti di convegno 45372
4.2 Abstract in Atti di convegno 3508
4.3 Poster 846

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European Initiatives for User-Centric Design of Electric Vehicles

E-mobility is revolutionizing the automotive industry by improving energy-efficiency, lowering CO2 and non-exhaust emissions, innovating driving and propulsion technologies, redefining the hardware-software-ratio in the vehicle development, facilitating new business models, and transforming the market circumstances for electric vehicles (EVs) in passenger mobility and freight transportation. Ongoing R&D action is leading to an uptake of affordable and more energy-efficient EVs for the public ...

A New Test Rig for Electrically Actuated Landing Gear and Brake of a Small Transport Aircraft

Performing highly representative tests of aircraft equipment is a critical feature for gaining utmost confidence on their ability to perform flawlessly in flight under the entire spectrum of operating conditions. This can also contribute to accelerate the certification process of a new equipment. A research project (E-LISA) was performed in recent years, as part of the European funded Clean Sky 2 framework, with the objective of building an innovative facility for testing an electrically actu...

Innovative High-Performance Active Dampers for Effective Mitigation of Helicopter Main Rotor Vibrations

Helicopter vibrations, primarily generated by the main rotor-gearbox assembly, are a major source of concern due to their impact on structural integrity, cockpit instrument durability, and crew comfort. These vibrations are mainly transmitted through the gearbox's rigid support struts to the fuselage, leading to increased cabin noise and potential damage to critical components. This paper presents a solution for vibration mitigation which involves replacing traditional gearbox support struts ...

Analytical model for predicting rotor-stator interaction tonal noise in low-speed axial fans

Analytical models for aeroacoustic simulations are valuable due to their potential to reduce computational costs, a crucial consideration to optimize noise performance. Analytical models proposed so far focus mainly on isolated steady and unsteady fan tonal noise, often neglecting the significant contribution of rotor-stator interaction. As a matter of fact, for short axial spacing, tonal noise from potential flow interactions is relevant. This study presents an analytical model for predictin...

Acoustic liners’ dissipation analysis in presence of grazing flow using Howe’s energy corollary

Acoustic liners are installed in the intake of aircraft engines to absorb noise. In operating conditions, the acoustic liners are subjected to grazing acoustic waves and a turbulent boundary layer that develops over the nacelle. In presence of high sound pressure level (>140 dB) and grazing flow, the liner works in the so-called non-linear regime and the acoustic dissipation is governed by the vortex shedding formed at the mouths of the orifices. In addition, the grazing flow modifies the imp...

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