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Arush, I. (author), Pavel, M.D. (author), Mulder, Max (author)Evaluation of the power required in level flight is essential to any new or modified helicopter performance flight-testing effort. The conventional flight-test method is based on an overly simplification of the induced and profile power components required for a helicopter in level flight. This simplistic approach incorporates several...journal article 2023
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Mitici, M.A. (author), Hennink, Birgitte (author), Pavel, M.D. (author), Dong, J. (author)The health management of batteries is a key enabler for the adoption of Electric Vertical Take-off and Landing vehicles (eVTOLs). Currently, few studies consider the health management of eVTOL batteries. One distinct characteristic of batteries for eVTOLs is that the discharge rates are significantly larger during take-off and landing, compared...journal article 2023
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Scaramuzzino, P.F. (author), Pool, D.M. (author), Pavel, M.D. (author), Stroosma, O. (author), Quaranta, Giuseppe (author), Mulder, Max (author)This paper analyzes the effects of the helicopter dynamics on pilots' learning process and transfer of learned skills during autorotation training. A quasi-transfer-of-training experiment was performed with 10 experienced helicopter pilots in the SIMONA moving-base flight simulator at Delft University of Technology. Pilots had to control an...journal article 2023
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Friesen, D. (author), Borst, C. (author), Pavel, M.D. (author), Masarati, Pierangelo (author), Mulder, Max (author)This paper investigates the effects of different automation design philosophies for a helicopter navigation task. A baseline navigation display is compared with two more advanced systems: an advisory display, which provides a discrete trajectory suggestion; and a constraint-based display, which provides information about the set of possible...journal article 2022
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- Quaranta, Giuseppe (author), Ekaterinaris, John (author), Barakos, George (author), Filippone, Antonio (author), White, Mark (author), Anderson, David (author), Pavel, M.D. (author) contribution to periodical 2022
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Pavel, M.D. (author)The aim of the present paper is to present an understanding of the control characteristics for representative eVTOL (Electric Vertical Takeoff and Landing) quadcopters having the same properties of interest as the eVTOL configurations developed presently in Urban Air Mobility. In this context, the paper concentrates on eVTOL quadcopters with...journal article 2021
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Scaramuzzino, Paolo Francesco (author), Pavel, M.D. (author), Pool, D.M. (author), Stroosma, O. (author), Quaranta, Giuseppe (author), Mulder, Max (author)Training has the potential to inject a “safety vaccination” into the rotorcraft community by reducing the number of accidents. The term training should not be intended only in a strict sense, i.e., as pilot technical skills training, but more broadly as risk avoidance and safety culture training. As in the case of vaccination, where immunity is...conference paper 2021
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Helder, B. (author), van Kampen, E. (author), Pavel, M.D. (author)Reinforcement learning is an appealing approach for adaptive, fault-tolerant flight control, but is generally plagued by its need for accurate system models and lengthy offline training phases. The novel Incremental Dual Heuristic Programming (IDHP) method removes these dependencies by using an online-identified local system model. A recent...conference paper 2021
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Nabi, H.N. (author), de Visser, C.C. (author), Pavel, M.D. (author), Quaranta, Giuseppe (author)The research presented in this paper focuses on the development of a quasi-Linear Parameter Varying (qLPV) model for the XV-15 tiltrotor aircraft. The specific category of qLPV modeling technique, known as the model stitching technique, is employed to model the time-varying dynamics of XV-15 tiltrotor aircraft over the entire flight envelope....journal article 2021
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Scaramuzzino, Paolo Francesco (author), Pavel, M.D. (author), Pool, D.M. (author), Stroosma, O. (author), Mulder, Max (author), Quaranta, Giuseppe (author)This paper analyzes the effects of the helicopter dynamics on pilots’ learning process and transfer of learned skills during autorotation training. A quasi-transfer-of-training experiment was performed with 14 experienced helicopter pilots in a moving-base flight simulator. Two types of helicopter dynamics, characterized by a different...journal article 2021
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Miletović, I. (author), Pavel, M.D. (author), Pool, D.M. (author), Stroosma, O. (author), van Paassen, M.M. (author), Mulder, Max (author), Wentink, Mark (author)Eigenmode distortion is a novel quantitative methodology developed to objectively evaluate motion cueing fidelity in flight simulation. It relies on an explicit coupling of linearized vehicle and Motion Cueing Algorithm dynamics. Modal analysis subsequently performed on this coupled system reveals the degree of distortion imposed by the Motion...journal article 2021
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Greiser, Steffen (author), Pavel, M.D. (author), Stroosma, O. (author), Yavrucuk, Ilkay (author), White, Mark D. (author), Padfield, Gareth D (author), Cameron, Neil (author), Prasad, J.V.R. (author), Guner, Feyyaz (author)Rotorcraft flight dynamics simulation models require high levels of fidelity to be suitable as prime items in support of life cycle practices, particularly vehicle and control design and development, and system and trainer certification. On the civil side, both the FAA (US) and EASA (Europe) have documented criteria (metrics and practices) for...report 2021
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Arush, I. (author), Pavel, M.D. (author), Mulder, Max (author)The process of empirical models evaluation is at the core business of experimental flight-testing data analysis. Accurate and convenient flight-testing of helicopter engine(s) available power is crucial for predicting the total helicopter performance. Common practice in estimation of in-flight helicopter gas turbine engine power consists of a...journal article 2020
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Friesen, D. (author), Pavel, M.D. (author), Borst, C. (author), Stroosma, O. (author), Masarati, Pierangelo (author), Mulder, Max (author)This paper aims to reveal the effect of different display design principles in the helicopter domain. Two different obstacle avoidance support displays are evaluated during low-altitude, forward helicopter flight: a baseline Head-Up Display (HUD) is complemented either by a conventional advisory display, or a constraint-based display inspired by...conference paper 2020
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Armanini, S.F. (author), Caetano, J. V. (author), de Visser, C.C. (author), Pavel, M.D. (author), de Croon, G.C.H.E. (author), Mulder, Max (author)Despite significant interest in tailless flapping-wing micro aerial vehicle designs, tailed configurations are often favoured, as they offer many benefits, such as static stability and a simpler control strategy, separating wing and tail control. However, the tail aerodynamics are highly complex due to the interaction between the unsteady...journal article 2019
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Friesen, D. (author), Pavel, M.D. (author), Borst, C. (author), Masarati, Pierangelo (author), Mulder, Max (author)Head-down hover displays and instrument panels theoretically provide all necessary 2ight data information to control low-speed helicopter manoeuvring. However, past experiments have shown that head-down displays can incur high workload, control instability, and even loss of control when used as the sole 2ight data source. This paper...conference paper 2019
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Scaramuzzino, Paolo Francesco (author), Pavel, M.D. (author), Pool, D.M. (author), Stroosma, O. (author), Quaranta, Giuseppe (author), Mulder, Max (author)Autorotation is a flight condition whereby the engine of a helicopter is no longer supplying power to the main rotor system, which is driven solely by the upward flow of the air moving through the rotor. For helicopters, autorotation is a common emergency procedure performed by pilots to safely land the vehicle in the event of a power failure...conference paper 2019
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Van De Velde, Sabrina (author), Jorissen, Elisabeth L. (author), Neubauer, Thomas A. (author), Radan, Silviu (author), Pavel, Ana Bianca (author), Stoica, Marius (author), Van Baak, Christiaan G.C. (author), Gándara, Alberto Martínez (author), Abels, H.A. (author)Palaeoecological records are required to test ecological hypotheses necessary for conservation strategies as short-term observations can insufficiently capture natural variability and identify drivers of biotic change. Here, we demonstrate the importance of an integrated conservation palaeobiology approach when making validated decisions for...journal article 2019
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Nabi, H.N. (author), de Visser, C.C. (author), Pavel, M.D. (author), Quaranta, Giuseppe (author)A safe conversion of tiltrotor from helicopter mode to airplane mode is ensured through maneuvering within the conversion corridor, a constrained region in the airspeed versus nacelle angle graph. This paper presents preliminary work in the development of an automatic conversion maneuver. A high order quasi-Linear Parameter Varying model is...conference paper 2019
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Fasiello, Simone (author), Jump, Michael (author), Pavel, M.D. (author), van Kampen, E. (author), Masarati, Pierangelo (author)Nowadays, the complexity of high speed civil transport and highly-augmented rotorcraft, has led to an increase in the chances of encountering unwanted unstable phenomena, such as the so called Aircraft/Rotorcraft-Pilot Couplings (A/RPCs) or Pilot-Induced Oscillations (PIOs), whose unpredictability has given rise to a serious problem concerning...conference paper 2018