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Prof. Alberto Rolando
Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy

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0 UAS
0 Electric Aircraft
0 Hybrid-electric aircraft
0 Hydrogen-powered aircraft
0 Aircraft preliminary design

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Journal article
Published: 03 February 2021 in Aerospace
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The adoption of hybrid-electric aircraft is expected to have a considerable impact on airport operations, with the need of new infrastructural requirements to support electric-powered fleets. In particular, battery-charging requirements shall play a decisive role. Preliminary investigations useful to perform scenario studies for the future implementation of electric-powered aviation can take advantage of the ARES methodology presented here, which provides the optimal solution to the sizing of airport battery recharging infrastructures. Based on the flight schedule and on the specifications of the aircraft fleet and the charging equipment, the solution assesses the number and type of charging points, the related electrical consumption in terms of energy and power, and further information needed to guarantee the required operational level while minimizing the procurement and operating costs. The method allows considering and comparing two charging strategies: plug-in recharge and battery swapping. Energy price variation in time is also taken into account and a full description of the optimal time scheduling of recharging operations is provided. Application studies to the reconfiguration of two existing aerodromes, a General Aviation airport and a large regional hub, are discussed, showing the potential of the proposed approach.

ACS Style

Lorenzo Trainelli; Francesco Salucci; Carlo Riboldi; Alberto Rolando; Federico Bigoni. Optimal Sizing and Operation of Airport Infrastructures in Support of Electric-Powered Aviation. Aerospace 2021, 8, 40 .

AMA Style

Lorenzo Trainelli, Francesco Salucci, Carlo Riboldi, Alberto Rolando, Federico Bigoni. Optimal Sizing and Operation of Airport Infrastructures in Support of Electric-Powered Aviation. Aerospace. 2021; 8 (2):40.

Chicago/Turabian Style

Lorenzo Trainelli; Francesco Salucci; Carlo Riboldi; Alberto Rolando; Federico Bigoni. 2021. "Optimal Sizing and Operation of Airport Infrastructures in Support of Electric-Powered Aviation." Aerospace 8, no. 2: 40.

Proceedings article
Published: 22 September 2016 in 2016 IEEE Metrology for Aerospace (MetroAeroSpace)
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The present contribution concerns the activities carried out in the Clean Sky GRC5 MANOEUVRES project. The overall goal of the project is to provide an innovative system to monitor rotorcraft noise in flight, in view of performing optimized low-noise terminal procedures. To achieve this goal it is necessary to estimate in real time the main rotor tip-path plane (TPP) orientation with respect to the vehicle airspeed vector, which in turn depends on the TPP orientation with respect to the helicopter airframe. An in-flight contactless measuring system, capable of measuring the three angles of a helicopter blade with respect to the hub, is proposed and validated. Its development is detailed, starting from the selection of candidate technologies up to the final demonstration of a prototypal device on board an AgustaWestland AW139 prototype helicopter.

ACS Style

Emanuele Zappa; Lorenzo Trainelli; Rui Liu; Alberto Rolando; Federico Rossi; Potito Cordisco; Edoardo Vigoni; Matteo Redaelli. Real time contactless sensor for helicopter blade angle measurement. 2016 IEEE Metrology for Aerospace (MetroAeroSpace) 2016, 239 -244.

AMA Style

Emanuele Zappa, Lorenzo Trainelli, Rui Liu, Alberto Rolando, Federico Rossi, Potito Cordisco, Edoardo Vigoni, Matteo Redaelli. Real time contactless sensor for helicopter blade angle measurement. 2016 IEEE Metrology for Aerospace (MetroAeroSpace). 2016; ():239-244.

Chicago/Turabian Style

Emanuele Zappa; Lorenzo Trainelli; Rui Liu; Alberto Rolando; Federico Rossi; Potito Cordisco; Edoardo Vigoni; Matteo Redaelli. 2016. "Real time contactless sensor for helicopter blade angle measurement." 2016 IEEE Metrology for Aerospace (MetroAeroSpace) , no. : 239-244.

Journal article
Published: 25 January 2016 in Noise Mapping
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The present contribution aims at providing a comprehensive illustration of a new approach to rotorcraft noise abatement, especially during terminal procedures, when the vehicle approaches the ground and the acoustic impact is higher. This approach pursues the development of technologies and tools for real-time, in-flight monitoring of the emitted noise. The effect of the acoustic radiation is presented to the pilot in a condensed, practical form on a new cockpit instrumentation, the Pilot Acoustic Indicator (PAI), to be used for performing quieter maneuvers. The PAI is based on the synergetic composition of pre-calculated acoustic data, which are used in a noise estimation algorithm together with the data gathered by an innovative contactless measurement system, capable of acquiring the main rotor blade motion. The paper reports on the current studies in unsteady and quasi-steady aeroacoustic prediction and tip-path-plane angle of attack and thrust coefficient observation. Results on novel methodologies are discussed, together with the main features of the PAI design and development process.

ACS Style

Lorenzo Trainelli; Massimo Gennaretti; Giovanni Bernardini; Alberto Rolando; Carlo E. D. Riboldi; Matteo Redaelli; Luca Riviello; Alessandro Scandroglio. Innovative Helicopter In-Flight Noise Monitoring Systems Enabled by Rotor-State Measurements. Noise Mapping 2016, 3, 1 .

AMA Style

Lorenzo Trainelli, Massimo Gennaretti, Giovanni Bernardini, Alberto Rolando, Carlo E. D. Riboldi, Matteo Redaelli, Luca Riviello, Alessandro Scandroglio. Innovative Helicopter In-Flight Noise Monitoring Systems Enabled by Rotor-State Measurements. Noise Mapping. 2016; 3 (1):1.

Chicago/Turabian Style

Lorenzo Trainelli; Massimo Gennaretti; Giovanni Bernardini; Alberto Rolando; Carlo E. D. Riboldi; Matteo Redaelli; Luca Riviello; Alessandro Scandroglio. 2016. "Innovative Helicopter In-Flight Noise Monitoring Systems Enabled by Rotor-State Measurements." Noise Mapping 3, no. 1: 1.

Journal article
Published: 20 December 2013 in Aircraft Engineering and Aerospace Technology
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ACS Style

Lorenzo Trainelli; Alberto Rolando; Giovanni Bonaita; Paolo Chimetto. Experiences in academic flight testing education. Aircraft Engineering and Aerospace Technology 2013, 86, 56 -66.

AMA Style

Lorenzo Trainelli, Alberto Rolando, Giovanni Bonaita, Paolo Chimetto. Experiences in academic flight testing education. Aircraft Engineering and Aerospace Technology. 2013; 86 (1):56-66.

Chicago/Turabian Style

Lorenzo Trainelli; Alberto Rolando; Giovanni Bonaita; Paolo Chimetto. 2013. "Experiences in academic flight testing education." Aircraft Engineering and Aerospace Technology 86, no. 1: 56-66.

Conference paper
Published: 01 October 2013 in International Conference on Indoor Positioning and Indoor Navigation
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This work presents a theoretical and experimental study of methods and strategies to implement an ubiquitous positioning system based on IEEE 802.15.4 radio signals. Ranging phase is first analyzed. An empirical method, for a combined use of both Received Signal Strength Indicator (RSSI) and Time Of Flight (TOF) measures, is proposed. Distance measurements performed in different scenarios highlight that RSSI measures provide lower errors on short distance while TOF measures are more suitable for longer distances. The RSSI threshold in use can be different for every scenario but our measurements show that it can be well identified by observing the relevant RSSI calibration curve. Once this threshold is identified, a complementary use of RSSI and TOF measures is then possible. Subsequently the positioning phase is analyzed. The main range-based and centralized localization algorithms are at first compared using simulated localizations, both in their cooperative and non cooperative version, in order to have a complete overview of their performances. However, the considered driving case study (the position monitoring of vehicles/assets in a typical airport area) puts in evidence the requirement for a non cooperative localization strategy. In this condition simulations show that the optimization approach outperforms the other localization algorithms. The deterministic optimization has been also preferred to the stochastic one: position accuracy being equal, the stochastic optimization methods also need the preliminary set up of different parameters through several simulations and trials. Real-world positioning tests, considering indoor and outdoor scenarios of different sizes (from ten to some hundreds of meters) confirm the validity of this choice, the effectiveness of the proposed ranging method and also the importance of exploiting anchors' redundancy. However, position accuracy is still poor for the most noisy scenarios. Future works should focus on the development of an efficient weighting algorithm to further decrease position error.

ACS Style

Alberto Rolando; Emanuele Amoruso. An ubiquitous positioning system based on IEEE 802.15.4 radio signals. International Conference on Indoor Positioning and Indoor Navigation 2013, 1 -10.

AMA Style

Alberto Rolando, Emanuele Amoruso. An ubiquitous positioning system based on IEEE 802.15.4 radio signals. International Conference on Indoor Positioning and Indoor Navigation. 2013; ():1-10.

Chicago/Turabian Style

Alberto Rolando; Emanuele Amoruso. 2013. "An ubiquitous positioning system based on IEEE 802.15.4 radio signals." International Conference on Indoor Positioning and Indoor Navigation , no. : 1-10.

Journal article
Published: 01 July 2011 in Journal of Aircraft
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ACS Style

Lorenzo Trainelli; Alberto Rolando. Reliable and Cost-Effective Flight Testing of Ultralight Aircraft. Journal of Aircraft 2011, 48, 1342 -1350.

AMA Style

Lorenzo Trainelli, Alberto Rolando. Reliable and Cost-Effective Flight Testing of Ultralight Aircraft. Journal of Aircraft. 2011; 48 (4):1342-1350.

Chicago/Turabian Style

Lorenzo Trainelli; Alberto Rolando. 2011. "Reliable and Cost-Effective Flight Testing of Ultralight Aircraft." Journal of Aircraft 48, no. 4: 1342-1350.