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This work deals with the problem of estimating the turnaround time in the early stages of aircraft design. The turnaround time has a significant impact in terms of marketability and value creation potential of an aircraft and, for this reason, it should be considered as an important driver of fuselage and cabin design decisions. Estimating the turnaround time during the early stages of aircraft design is therefore an essential task. This task becomes even more decisive when designers explore unconventional aircraft architectures or, in general, are still evaluating the fuselage design and its internal layout. In particular, it is of paramount importance to properly estimate the boarding and deboarding times, which contribute for up the 40% to the overall turnaround time. For this purpose, a tool, called SimBaD, has been developed and validated with publicly available data for existing aircraft of different classes. In order to demonstrate SimBaD capability of evaluating the influence of fuselage and cabin features on the turnaround time, its application to an unconventional box-wing aircraft architecture, known as PrandtlPlane, is presented as case study. Finally, considering standard scenarios provided by aircraft manufacturers, a comparison between the turnaround time of the PrandtlPlane and the turnaround time of a conventional competitor aircraft is presented.
Marco Picchi Scardaoni; Fabio Magnacca; Andrea Massai; Vittorio Cipolla. Aircraft turnaround time estimation in early design phases: Simulation tools development and application to the case of box-wing architecture. Journal of Air Transport Management 2021, 96, 102122 .
AMA StyleMarco Picchi Scardaoni, Fabio Magnacca, Andrea Massai, Vittorio Cipolla. Aircraft turnaround time estimation in early design phases: Simulation tools development and application to the case of box-wing architecture. Journal of Air Transport Management. 2021; 96 ():102122.
Chicago/Turabian StyleMarco Picchi Scardaoni; Fabio Magnacca; Andrea Massai; Vittorio Cipolla. 2021. "Aircraft turnaround time estimation in early design phases: Simulation tools development and application to the case of box-wing architecture." Journal of Air Transport Management 96, no. : 102122.
One of the possible ways to face the challenge of reducing the environmental impact of aviation, without limiting the growth of air transport, is the introduction of more efficient, radically different aircraft architectures. Among these, the box-wing one represents a promising solution, at least in the case of its application to short-to-medium haul aircraft, which, according to the achievement of the H2020 project “PARSIFAL”, would bring to a 20% reduction in terms of emitted CO2 per passenger-kilometre. The present paper faces the problem of estimating the structural mass of such a disruptive configuration in the early stages of the design, underlining the limitations in this capability of the approaches available by literature and proposing a DoE-based approach to define surrogate models suitable for such purpose. A test case from the project “PARSIFAL” is used for the first conception of the approach, starting from the Finite Element Model parametrization, then followed by the construction of a database of FEM results, hence introducing the regression models and implementing them in an optimization framework. Results achieved are investigated in order to validate both the wing sizing and the optimization procedure. Finally, an additional test case resulting from the application of the box-wing layout to the regional aircraft category within the Italian research project “PROSIB”, is briefly presented to further assess the capabilities of the proposed approach.
V. Cipolla; K. Abu Salem; G. Palaia; V. Binante; D. Zanetti. A DoE-based approach for the implementation of structural surrogate models in the early stage design of box-wing aircraft. Aerospace Science and Technology 2021, 117, 106968 .
AMA StyleV. Cipolla, K. Abu Salem, G. Palaia, V. Binante, D. Zanetti. A DoE-based approach for the implementation of structural surrogate models in the early stage design of box-wing aircraft. Aerospace Science and Technology. 2021; 117 ():106968.
Chicago/Turabian StyleV. Cipolla; K. Abu Salem; G. Palaia; V. Binante; D. Zanetti. 2021. "A DoE-based approach for the implementation of structural surrogate models in the early stage design of box-wing aircraft." Aerospace Science and Technology 117, no. : 106968.
A way to face the challenge of moving towards a new greener aviation is to exploit disruptive aircraft architectures; one of the most promising concept is the PrandtlPlane, a box-wing aircraft based on the Prandtl's studies on multiplane lifting systems. A box-wing designed accordingly the Prandtl “best wing system” minimizes the induced drag for given lift and span, and thus it has the potential to reduce fuel consumption and noxious emissions. For disruptive aerodynamic concepts, physic-based aerodynamic design is needed from the very early stages of the design process, because of the lack of available statistical data; this paper describes two different in-house developed aerodynamic design tools for the PrandtlPlane conceptual aerodynamic design: AEROSTATE, for the design of the box-wing lifting system in cruise condition, and THeLMA, aiming to define the layout of control surfaces and high lift devices. These two tools have been extensively used to explore the feasible space for the aerodynamic design of the box-wing architecture, aiming to define preliminary correlations between performance and design variables, and guidelines to properly initialize the design process. As a result, relevant correlations have been identified between the rear-front wing loading ratio and the performance in cruise condition, and for the rear-front flap deflections and the aeromechanic characteristics in low speed condition.
Karim Abu Salem; Palaia Giuseppe; Cipolla Vittorio; Binante Vincenzo; Zanetti Davide; Chiarelli Mario. Tools and methodologies for box-wing aircraft conceptual aerodynamic design and aeromechanic analysis. Mechanics & Industry 2021, 22, 39 .
AMA StyleKarim Abu Salem, Palaia Giuseppe, Cipolla Vittorio, Binante Vincenzo, Zanetti Davide, Chiarelli Mario. Tools and methodologies for box-wing aircraft conceptual aerodynamic design and aeromechanic analysis. Mechanics & Industry. 2021; 22 ():39.
Chicago/Turabian StyleKarim Abu Salem; Palaia Giuseppe; Cipolla Vittorio; Binante Vincenzo; Zanetti Davide; Chiarelli Mario. 2021. "Tools and methodologies for box-wing aircraft conceptual aerodynamic design and aeromechanic analysis." Mechanics & Industry 22, no. : 39.
Aldo Frediani; Vittorio Cipolla; Sergio De Rosa; Paolo Gasbarri. Aerotecnica M&S 100 Years Ago: Enrico Pistolesi’s Aerodynamics. Aerotecnica Missili & Spazio 2021, 100, 85 -94.
AMA StyleAldo Frediani, Vittorio Cipolla, Sergio De Rosa, Paolo Gasbarri. Aerotecnica M&S 100 Years Ago: Enrico Pistolesi’s Aerodynamics. Aerotecnica Missili & Spazio. 2021; 100 (2):85-94.
Chicago/Turabian StyleAldo Frediani; Vittorio Cipolla; Sergio De Rosa; Paolo Gasbarri. 2021. "Aerotecnica M&S 100 Years Ago: Enrico Pistolesi’s Aerodynamics." Aerotecnica Missili & Spazio 100, no. 2: 85-94.
The aviation world is dealing with the development of new and greener aviation. The need for reducing greenhouse gas emission as well as the noise is a critical requirement for the aviation of the future. The aviation world is struggling with it, and a compelling alternative can be the electric propulsion. This work aims to present THEA-CODE, a tool for the conceptual design of hybrid-electric aircraft. The tool evaluates the potential benefits of the electric propulsion in terms of fuel burnt and direct and indirect CO2 emissions. THEA-CODE is suitable not only for conventional “wing-tube” configurations but also for unconventional ones, such as the box-wing. The results show a significant reduction of fuel burnt adopting batteries with energy density higher than the current state of the art. A procedure to find the potential best compromise configurations is presented as well.
Giuseppe Palaia; Davide Zanetti; Karim Abu Salem; Vittorio Cipolla; Vincenzo Binante. THEA-CODE: a design tool for the conceptual design of hybrid-electric aircraft with conventional or unconventional airframe configurations. Mechanics & Industry 2021, 22, 19 .
AMA StyleGiuseppe Palaia, Davide Zanetti, Karim Abu Salem, Vittorio Cipolla, Vincenzo Binante. THEA-CODE: a design tool for the conceptual design of hybrid-electric aircraft with conventional or unconventional airframe configurations. Mechanics & Industry. 2021; 22 ():19.
Chicago/Turabian StyleGiuseppe Palaia; Davide Zanetti; Karim Abu Salem; Vittorio Cipolla; Vincenzo Binante. 2021. "THEA-CODE: a design tool for the conceptual design of hybrid-electric aircraft with conventional or unconventional airframe configurations." Mechanics & Industry 22, no. : 19.
The PARSIFAL project (Prandtlplane ARchitecture for the Sustainable Improvement of Future AirpLanes) aims to promote an innovative box-wing aircraft: the PrandtlPlane. Aircraft developed adopting this configuration are expected to achieve a payload capability higher than common single aisle analogues (e.g., Airbus 320 and Boeing 737 families), without any increase in the overall dimensions. We estimated the exhaust emissions from the PrandtlPlane and compared the corresponding impacts to those of a conventional reference aircraft, in terms of Global Warming Potential (GWP) and Global Temperature Potential (GTP), on two time-horizons and accounted for regional sensitivity. We considered carbon dioxide, carbonaceous and sulphate aerosols, nitrogen oxides and related ozone production, methane degradation and nitrate aerosols formation, contrails, and contrail cirrus. Overall, the introduction of the PrandtlPlane is expected to bring a considerable reduction of climate change in all the source regions considered, on both the time-horizons examined. Moreover, fuel consumption is expected to be reduced by 20%, as confirmed through high-fidelity Computational Fluid Dynamics (CFD) simulations. Sensitivity of data, models, and metrics are detailed. Impact reduction and mitigation strategies are discussed, as well as the gaps to be addressed in order to develop a comprehensive Life Cycle Assessment on aircraft emissions.
Andrea Tasca; Vittorio Cipolla; Karim Abu Salem; Monica Puccini. Innovative Box-Wing Aircraft: Emissions and Climate Change. Sustainability 2021, 13, 3282 .
AMA StyleAndrea Tasca, Vittorio Cipolla, Karim Abu Salem, Monica Puccini. Innovative Box-Wing Aircraft: Emissions and Climate Change. Sustainability. 2021; 13 (6):3282.
Chicago/Turabian StyleAndrea Tasca; Vittorio Cipolla; Karim Abu Salem; Monica Puccini. 2021. "Innovative Box-Wing Aircraft: Emissions and Climate Change." Sustainability 13, no. 6: 3282.
Aldo Frediani; Vittorio Cipolla; Sergio De Rosa; Paolo Gasbarri. Aerotecnica M&S: 100 Years Behind to Explore New Horizons. Aerotecnica Missili & Spazio 2021, 100, 1 -13.
AMA StyleAldo Frediani, Vittorio Cipolla, Sergio De Rosa, Paolo Gasbarri. Aerotecnica M&S: 100 Years Behind to Explore New Horizons. Aerotecnica Missili & Spazio. 2021; 100 (1):1-13.
Chicago/Turabian StyleAldo Frediani; Vittorio Cipolla; Sergio De Rosa; Paolo Gasbarri. 2021. "Aerotecnica M&S: 100 Years Behind to Explore New Horizons." Aerotecnica Missili & Spazio 100, no. 1: 1-13.
In this study, new analytical solutions to the equations of motion of a propelled spacecraft are investigated using a shape-based approach. There is an assumption that the spacecraft travels a two-dimensional spiral trajectory in which the orbital radius is proportional to an assigned power of the spacecraft angular coordinate. The exact solution to the equations of motion is obtained as a function of time in the case of a purely radial thrust, and the propulsive acceleration magnitude necessary for the spacecraft to track the prescribed spiral trajectory is found in a closed form. The analytical results are then specialized to the case of a generalized sail, that is, a propulsion system capable of providing an outward radial propulsive acceleration, the magnitude of which depends on a given power of the Sun-spacecraft distance. In particular, the conditions for an outward radial thrust and the required sail performance are quantified and thoroughly discussed. It is worth noting that these propulsion systems provide a purely radial thrust when their orientation is Sun-facing. This is an important advantage from an engineering point of view because, depending on the particular propulsion system, a Sun-facing attitude can be stable or obtainable in a passive way. A case study is finally presented, where the generalized sail is assumed to start the spiral trajectory from the Earth’s heliocentric orbit. The main outcome is that the required sail performance is in principle achievable on the basis of many results available in the literature.
Marco Bassetto; Alessandro A. Quarta; Giovanni Mengali; Vittorio Cipolla. Spiral trajectories induced by radial thrust with applications to generalized sails. Astrodynamics 2020, 5, 121 -137.
AMA StyleMarco Bassetto, Alessandro A. Quarta, Giovanni Mengali, Vittorio Cipolla. Spiral trajectories induced by radial thrust with applications to generalized sails. Astrodynamics. 2020; 5 (2):121-137.
Chicago/Turabian StyleMarco Bassetto; Alessandro A. Quarta; Giovanni Mengali; Vittorio Cipolla. 2020. "Spiral trajectories induced by radial thrust with applications to generalized sails." Astrodynamics 5, no. 2: 121-137.
Marco Bassetto; Alessandro A. Quarta; Giovanni Mengali; Vittorio Cipolla. Trajectory Analysis of a Sun-Facing Solar Sail with Optical Degradation. Journal of Guidance, Control, and Dynamics 2020, 43, 1727 -1732.
AMA StyleMarco Bassetto, Alessandro A. Quarta, Giovanni Mengali, Vittorio Cipolla. Trajectory Analysis of a Sun-Facing Solar Sail with Optical Degradation. Journal of Guidance, Control, and Dynamics. 2020; 43 (9):1727-1732.
Chicago/Turabian StyleMarco Bassetto; Alessandro A. Quarta; Giovanni Mengali; Vittorio Cipolla. 2020. "Trajectory Analysis of a Sun-Facing Solar Sail with Optical Degradation." Journal of Guidance, Control, and Dynamics 43, no. 9: 1727-1732.
The present paper deals with the take-off performance analysis of PrandtlPlane aircraft. The PrandtlPlane is a Box-Wing configuration based on Prandtl’s “Best Wing System” concept, which minimizes the induced drag once wingspan and lift are given. The take-off dynamics is simulated implementing the non-linear equations of motion in a numerical tool, which adopts a Vortex Lattice Method solver to evaluate the aerodynamics characteristics taking also ground effects into account. The take-off analysis is performed for both a PrandtlPlane and a reference monoplane, with the aim of comparing the performance of the two different architectures. The preliminary results show the potential advantages of the PrandtlPlane, such as runway length reduction and improved passenger comfort.
K. Abu Salem; G. Palaia; M. Bianchi; D. Zanetti; V. Cipolla; V. Binante. Preliminary Take-Off Analysis and Simulation of PrandtlPlane Commercial Aircraft. Aerotecnica Missili & Spazio 2020, 99, 203 -216.
AMA StyleK. Abu Salem, G. Palaia, M. Bianchi, D. Zanetti, V. Cipolla, V. Binante. Preliminary Take-Off Analysis and Simulation of PrandtlPlane Commercial Aircraft. Aerotecnica Missili & Spazio. 2020; 99 (3):203-216.
Chicago/Turabian StyleK. Abu Salem; G. Palaia; M. Bianchi; D. Zanetti; V. Cipolla; V. Binante. 2020. "Preliminary Take-Off Analysis and Simulation of PrandtlPlane Commercial Aircraft." Aerotecnica Missili & Spazio 99, no. 3: 203-216.
In the present work, the CFD analysis and local shape optimization of a boxwing architecture designed during the early stages of the PARSIFAL project are addressed in order to assess and improve its transonic aerodynamic performance. The assessment of the baseline configuration is carried out by means of high-fidelity RANS computations while an Euler-based workflow is employed for the optimization study. In both cases, CFD computations are supplemented by a far-field drag post-processing to inspect the behavior and the impact of the different drag sources (induced, wave, pressure and viscous dissipation) on the aerodynamic performance. Results obtained from the optimization of local twist and camber parameters for the isolated boxwing lifting-system are presented and discussed. The optimization successfully achieves a great reduction of the compressibility effects affecting the baseline configuration, leading to a substantial improvement of the aerodynamic performance at cruise and higher values of the lift coefficient.
Marco Carini; Michael Meheut; Stylianos Kanellopoulos; Vittorio Cipolla; Karim Abu Salem. Aerodynamic analysis and optimization of a boxwing architecture for commercial airplanes. AIAA Scitech 2020 Forum 2020, 1 .
AMA StyleMarco Carini, Michael Meheut, Stylianos Kanellopoulos, Vittorio Cipolla, Karim Abu Salem. Aerodynamic analysis and optimization of a boxwing architecture for commercial airplanes. AIAA Scitech 2020 Forum. 2020; ():1.
Chicago/Turabian StyleMarco Carini; Michael Meheut; Stylianos Kanellopoulos; Vittorio Cipolla; Karim Abu Salem. 2020. "Aerodynamic analysis and optimization of a boxwing architecture for commercial airplanes." AIAA Scitech 2020 Forum , no. : 1.
The paper aims to present the design phases of a 300 ca. passengers box-wing aircraft, called PrandtlPlane, proposed as an efficient alternative for future air transport. The paper presents the workflow carried out during the project, starting from the definition of Top Level Aircraft Requirements up to the preliminary design of a conservative and improvable baseline configuration , which has been object of high-fidelity assessment in order to compare its performance with a 200 ca. passenger reference conventional aircraft from the same category (ICOA-ARC-4C). In order to better understand the advantages of adopting the box-wing configuration, the comparison also includes a derived version of the PrandtlPlane, designed considering the same passenger amount of the reference conventional aircraft. Finally, the paper shows the studies carried out to improve the baseline configuration in terms of aerodynamics and flight mechanics, describing also the way forward for the next steps for the refinement of the 300 passengers version. The activities here described are part of a research project called PARSIFAL (“Prandtlplane ARchitecture for the Sustainable Improvement of Future AirpLanes”), which has been funded by European Union under the Horizon 2020 Program.
Vittorio Cipolla; Karim Abu Salem; Marco Picchi Scardaoni; Vincenzo Binante. Preliminary design and performance analysis of a box-wing transport aircraft. AIAA Scitech 2020 Forum 2020, 1 .
AMA StyleVittorio Cipolla, Karim Abu Salem, Marco Picchi Scardaoni, Vincenzo Binante. Preliminary design and performance analysis of a box-wing transport aircraft. AIAA Scitech 2020 Forum. 2020; ():1.
Chicago/Turabian StyleVittorio Cipolla; Karim Abu Salem; Marco Picchi Scardaoni; Vincenzo Binante. 2020. "Preliminary design and performance analysis of a box-wing transport aircraft." AIAA Scitech 2020 Forum , no. : 1.
The activities reported in this paper are part of the project “PARSIFAL” (Prandtlplane ARchitecture for the Sustainable Improvement of Future AirpLanes), funded by the European Community under the Horizon 2020 program and coordinated by the University of Pisa (Italy); the other partners of the project are: Delft University of Technology (The Netherlands), ONERA (France), Arts et Métiers ParisTech-ENSAM (France), DLR (Germany) and SkyBox Engineering (Italy). The paper presents a summary of preliminary design activities, carried out with the project PARSIFAL in order to study the introduction of box-wing aircraft, known as “PrandtlPlane”, in the air transport system. PARSIFAL aims to investigate the adoption of the PrandtlPlane over short-to-medium routes, where aircraft compliant with the ICAO Aerodrome Reference Code “C” operate. According to such ICAO standard, the PrandtlPlane developed in PARSIFAL has a wingspan limited to 36m but, if compared to reference aircraft such as B737 and A320 families aircraft, it can improve the passenger capacity from about 200 to more than 300 units. This paper presents the design steps performed for the definition of a “baseline configuration” of the PrP, introducing the requirements and describing both the conceptual and preliminary design phases, including the high fidelity investigations CFD and FEM analyses.
Vittorio Cipolla; Aldo Frediani; Karim Abu Salem; Marco Picchi Scardaoni; Vincenzo Binante. The Project “Parsifal”: Prandtlplane Architecture For The Sustainable Improvement Of Future Airplanes. MATEC Web of Conferences 2019, 304, 01024 .
AMA StyleVittorio Cipolla, Aldo Frediani, Karim Abu Salem, Marco Picchi Scardaoni, Vincenzo Binante. The Project “Parsifal”: Prandtlplane Architecture For The Sustainable Improvement Of Future Airplanes. MATEC Web of Conferences. 2019; 304 ():01024.
Chicago/Turabian StyleVittorio Cipolla; Aldo Frediani; Karim Abu Salem; Marco Picchi Scardaoni; Vincenzo Binante. 2019. "The Project “Parsifal”: Prandtlplane Architecture For The Sustainable Improvement Of Future Airplanes." MATEC Web of Conferences 304, no. : 01024.
Purpose This paper aims to present a preliminary study on a disruptive vertical take-off and landing (VTOL) configuration based on the best wing system concept by L. Prandtl. Design/methodology/approach A preliminary design has been addressed from several points of views: a conceptual design has been carried out thanks to in-house optimization tool; aerodynamic performances, propulsion design and mechanical design have been addressed to make the first prototype for preliminary vertical flight tests. Findings The study shows the feasibility of box-wing configuration for VTOL aircraft. Practical implications The work shows a general design procedure for box-wing unmanned air vehicle (UAV) configuration. The study of this configuration can be easily adopted in wider range, from UAV to general aviation. In the last category, it can be a promising configuration for the future of urban air mobility. Originality/value This work lays the foundation for studying and testing box-wing configuration for unmanned VTOL aircraft. The design procedure can be scaled to manned aircraft belonging to general aviation aircraft.
Giuseppe Palaia; Vittorio Cipolla; Vincenzo Binante; Emanuele Rizzo. Preliminary design of a box-wing VTOL UAV. Aircraft Engineering and Aerospace Technology 2019, 92, 737 -743.
AMA StyleGiuseppe Palaia, Vittorio Cipolla, Vincenzo Binante, Emanuele Rizzo. Preliminary design of a box-wing VTOL UAV. Aircraft Engineering and Aerospace Technology. 2019; 92 (5):737-743.
Chicago/Turabian StyleGiuseppe Palaia; Vittorio Cipolla; Vincenzo Binante; Emanuele Rizzo. 2019. "Preliminary design of a box-wing VTOL UAV." Aircraft Engineering and Aerospace Technology 92, no. 5: 737-743.
Purpose The present paper aims to assess the reliability and the limitations of analysing flight stability of a box-wing aircraft configuration known as PrandtlPlane by means of methods conceived for conventional aircraft and well known in the literature. Design/methodology/approach Results obtained by applying vortex lattice methods to PrandtlPlane configuration, validated previously with wind tunnel tests, are compared to the output of a “Roskam-like” method, here defined to model the PrandtlPlane features. Findings The comparisons have shown that the “Roskam-like” model gives accurate predictions for both the longitudinal stability margin and dihedral effect, whereas the directional stability is always overestimated. Research limitations/implications The method here proposed and related achievements are valid only for subsonic conditions. The poor reliability related to lateral-directional derivatives estimations may be improved implementing different models known from the literature. Practical implications The possibility of applying a faster method as the “Roskam-like” one here presented has two main implications: it allows to implement faster analyses in the conceptual and preliminary design of PrandtlPlane, providing also a tool for the definition of the design space in case of optimization approaches and it allows to implement a scaling procedure, to study families of PrandtlPlanes or different aircraft categories. Social implications This paper is part of the activities carried out during the PARSIFAL project, which aims to demonstrate that the introduction of PrandtlPlane as air transport mean can fuel consumption and noise impact, providing a sustainable answer to the growing air passenger demand envisaged for the next decades. Originality/value The originality of this paper lies in the attempt of adopting analysis method conceived for conventional airplanes for the analysis of a novel configuration. The value of the work is represented by the knowledge concerning experimental results and design methods on the PrandtlPlane configuration, here made available to define a new analysis tool.
Vittorio Cipolla; Karim Abu Salem; Filippo Bachi. Preliminary stability analysis methods for PrandtlPlane aircraft in subsonic conditions. Aircraft Engineering and Aerospace Technology 2019, 91, 525 -537.
AMA StyleVittorio Cipolla, Karim Abu Salem, Filippo Bachi. Preliminary stability analysis methods for PrandtlPlane aircraft in subsonic conditions. Aircraft Engineering and Aerospace Technology. 2019; 91 (3):525-537.
Chicago/Turabian StyleVittorio Cipolla; Karim Abu Salem; Filippo Bachi. 2019. "Preliminary stability analysis methods for PrandtlPlane aircraft in subsonic conditions." Aircraft Engineering and Aerospace Technology 91, no. 3: 525-537.
According to aircraft manufacturers and several air transportation players, the main challenge the civil aviation will have to deal with in the future is to provide a sustainable growth strategy, in order to face the growing demand of air traffic all over the world. The sustainability requirements are related to air pollution, noise impact, airport congestion, competitiveness of the air transportation systems in terms of travel time and passengers' comfort. Among the possible ways to allow a sustainable growth of the air transportation systems, disruptive aircraft configurations have been object of study for several years, in order to demonstrate that the improvement of aircraft performance can enable the envisaged growth. This paper presents the study of a possible novel configuration called “PrandtlPlane,” having a box-wing layout derived from Prandtl's “Best Wing System” concept. The paper deals with the definition of top level requirements and faces the conceptual study of the overall configuration, focusing on fuselage sizing as well as on the aerodynamic design of the box-wing system. This latter is designed through an optimization-driven strategy, carried out by means of a low-fidelity aerodynamic tool, which simulates the flow condition in the subsonic range and introduces corrections to take the transonic effects into account. Design procedures and tools are presented, showing preliminary results related to a PrandtlPlane compliant with ICAO Aerodrome Reference Code “C” standard, such as Airbus A320 and Boeing 737, whose wingspan is limited to 36 m. Activities and results here shown are part of the first phase of the research project “PARSIFAL” (Prandtlplane ARchitecture for the Sustainable Improvement of Future AirpLanes), funded by the European Commission under the Horizon 2020 Program, which aims to demonstrate that the PrandtlPlane configuration can improve aircraft payload capability, keeping their dimensions compatible with present airport infrastructures.
A Frediani; Vittorio Cipolla; K Abu Salem; V Binante; Marco Picchi Scardaoni. Conceptual design of PrandtlPlane civil transport aircraft. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 2019, 234, 1675 -1687.
AMA StyleA Frediani, Vittorio Cipolla, K Abu Salem, V Binante, Marco Picchi Scardaoni. Conceptual design of PrandtlPlane civil transport aircraft. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 2019; 234 (10):1675-1687.
Chicago/Turabian StyleA Frediani; Vittorio Cipolla; K Abu Salem; V Binante; Marco Picchi Scardaoni. 2019. "Conceptual design of PrandtlPlane civil transport aircraft." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 234, no. 10: 1675-1687.
Most of the wing structures of modern leisure and sport aircraft, such as LSA, VLA, ultralights, etc., are made of composite materials. These latter allow for high surface quality and lower costs, if compared to metallic solutions with conventional riveted technology, which would be adopted as production volumes are small. Assuming a greater production volume, proper of an industrial production, the metallic solution can become a viable alternative considering an automatic welding technology, instead of riveted junctions. Although welded solutions bring with them issues in terms of fatigue resistance, the low wing loading typical of LSA/VLA allows to mitigate the mass increase and to obtain a proper design. This paper shows how wing structures made of light metallic alloys with welded junctions could be a feasible solution, presenting some results related to the design of an innovative light amphibian object of study within the research project “IDINTOS”. The activities here presented concern the optimization methodology for the design of metallic wing structures, the detail design through Finite Element Methods and the set-up of a technology demonstrator of the manufacturing process.
V. Cipolla; V. Binante; A. Nardone. Design, Optimization and Manufacturing of Metallic Wings of Light Aircraft. Aerotecnica Missili & Spazio 2018, 97, 219 -227.
AMA StyleV. Cipolla, V. Binante, A. Nardone. Design, Optimization and Manufacturing of Metallic Wings of Light Aircraft. Aerotecnica Missili & Spazio. 2018; 97 (4):219-227.
Chicago/Turabian StyleV. Cipolla; V. Binante; A. Nardone. 2018. "Design, Optimization and Manufacturing of Metallic Wings of Light Aircraft." Aerotecnica Missili & Spazio 97, no. 4: 219-227.
In the last years, aircraft disruptive configurations have been studied on view to increase civil air transport and safety of flight and, also, to reduce air pollution and noise. One of the promising configurations is the so called box wing, based on the Best Wing System concept by L. Prandtl. This paper presents an application of the box wing to the case of an unconventional Unmanned Air Vehicle (UAV), called “TiltOne”, because the two horizontal wings tilt together with the engine-propeller groups, so allowing us to take off and landing vertically and to fly as a fixed wing airplane during cruise. TiltOne is full electric, with distributed propulsion; the preliminary design has been carried out by using a homemade optimization code, where aerodynamics, controls and electric propulsion are taken into account. After defining the airframe configuration, aerodynamic analyses have been performed, electric motors and propellers and batteries are defined; finally, a detailed analysis of the mechanical components is presented and a prototype has been manufactured. Preliminary vertical test flight has been carried out successfully.
G. Palaia; K. Abu Salem; V. Cipolla; E. Di Vitantonio; E. Rizzo; V. Binante. Preliminary design of a Tiltwing UAV with a box wing configuration. Aerotecnica Missili & Spazio 2018, 97, 198 -207.
AMA StyleG. Palaia, K. Abu Salem, V. Cipolla, E. Di Vitantonio, E. Rizzo, V. Binante. Preliminary design of a Tiltwing UAV with a box wing configuration. Aerotecnica Missili & Spazio. 2018; 97 (4):198-207.
Chicago/Turabian StyleG. Palaia; K. Abu Salem; V. Cipolla; E. Di Vitantonio; E. Rizzo; V. Binante. 2018. "Preliminary design of a Tiltwing UAV with a box wing configuration." Aerotecnica Missili & Spazio 97, no. 4: 198-207.
Vittorio Cipolla; Aldo Frediani; Karim Abu Salem; Marco Picchi Scardaoni; Alessio Nuti; Vincenzo Binante. Conceptual design of a box-wing aircraft for the air transport of the future. 2018 Aviation Technology, Integration, and Operations Conference 2018, 1 .
AMA StyleVittorio Cipolla, Aldo Frediani, Karim Abu Salem, Marco Picchi Scardaoni, Alessio Nuti, Vincenzo Binante. Conceptual design of a box-wing aircraft for the air transport of the future. 2018 Aviation Technology, Integration, and Operations Conference. 2018; ():1.
Chicago/Turabian StyleVittorio Cipolla; Aldo Frediani; Karim Abu Salem; Marco Picchi Scardaoni; Alessio Nuti; Vincenzo Binante. 2018. "Conceptual design of a box-wing aircraft for the air transport of the future." 2018 Aviation Technology, Integration, and Operations Conference , no. : 1.
The subject of the present paper is the design of an innovative fuselage mounted main landing gear, developed for a PrandtlPlane architecture civil transport aircraft with a capacity of about 300 passengers. The paper presents the conceptual design and a preliminary sizing of landing gear structural components and actuation systems, in order to get an estimation of weight and of the required stowage. The adopted design methodology makes use of dynamic modelling and multibody simulation from the very first design stages, with the aim of providing efficient and flexible tools for a preliminary evaluation of performances, as well as enabling to easily update and adapt the design to further modifications. To develop the activity, the multibody dynamics of the landing gear (modelled using Simpack software) has been integrated via co-simulation with dynamic models developed in the Matlab/Simulink environment.
A. Nuti; F. Bertini; V. Cipolla; G. Di Rito. Design of a Fuselage-Mounted Main Landing Gear of a Medium-Size Civil Transport Aircraft. Aerotecnica Missili & Spazio 2018, 97, 85 -95.
AMA StyleA. Nuti, F. Bertini, V. Cipolla, G. Di Rito. Design of a Fuselage-Mounted Main Landing Gear of a Medium-Size Civil Transport Aircraft. Aerotecnica Missili & Spazio. 2018; 97 (2):85-95.
Chicago/Turabian StyleA. Nuti; F. Bertini; V. Cipolla; G. Di Rito. 2018. "Design of a Fuselage-Mounted Main Landing Gear of a Medium-Size Civil Transport Aircraft." Aerotecnica Missili & Spazio 97, no. 2: 85-95.