Searched for: author%3A%22Pavel%2C+M.D.%22
(1 - 20 of 41)

Pages

document
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
document
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
document
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
document
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
document
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
document
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
document
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
document
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
document
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
document
Scaramuzzino, P.F. (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
document
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
document
Visingardi, Antonio (author), Pavel, M.D. (author)
The present paper illustrates the outcomes of a research activity carried out by CIRA and the Delft University of Technology in the framework of the GARTEUR HC/AG-23 action group. This activity has been aimed at investigating,<br/>from the aerodynamic and handling qualities point of view, the problem of a Bo105 helicopter rotor crossing, in low...
conference paper 2018
document
Arush, Ilan (author), Pavel, M.D. (author)
Helicopter performance flight-testing is an expensive activity that requires efficient testing techniques and appropriate data analysis for good performance prediction. Regarding the flight testing techniques used to evaluate the available power of a Turboshaft engine, current methodologies involve a simplistic singlevariable polynomials...
conference paper 2018
document
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
document
Miletović, I. (author), Pavel, M.D. (author), Stroosma, O. (author), Pool, D.M. (author), van Paassen, M.M. (author), Wentink, Mark (author), Mulder, Max (author)
Eigenmode distortion (EMD) is a novel methodology developed to study the degradation of perceived vehicle dynamics as a result of motion cueing algorithms (MCA’s) applied in rotorcraft 2ight simulators. This paper brie2y introduces EMD and subsequently describes its application in a pilot-in-the-loop experiment conducted on the SIMONA Research...
conference paper 2018
document
Pavel, M.D. (author), Ionita, A (author)
The main objective of this paper is to give a basic understanding of the mechanisms through which pilot cyclic inputs in lateral cyclic interacts with high-order rotor dynamics destabilizing the helicopter roll motion. The paper will use a “Newtonian formulation” representing the main forces acting on the airframe body-rotor system as the pilot...
journal article 2018
document
Vidyarthi, K. (author), Beuker, Mathijs (author), Yin, F. (author), Voskuijl, M. (author), Pavel, M.D. (author)
The SABRE project has been initiated under the EU’s Horizon 2020 programme for development of blade morphing technologies for helicopter rotors. The project targets reductions in fuel burn and NOx emissions of upto 5-10% through the use of morphing rotor blades. A new design tool for rotorcraft, HOPLITE, is being developed to investigate the...
conference paper 2018
document
Bakker, Richard (author), Visingardi, Antonio (author), van der Wall, Berend G. (author), Voutsinas, Spyros (author), Basset, Pierre-Marie (author), Campagnolo, Filippo (author), Pavel, M.D. (author), Barakos, George (author), White, Mark (author)
The effects of a wind turbine wake on General Aviation and the behaviour of helicopters in the tip vortex of large fixed-wing aircraft has been topic of research in the past years, but less is known about the interactions of helicopters operating in a wind turbine wake. A dedicated GARTEUR Action Group, HC-AG23, consisting of European...
conference paper 2018
document
Quaranta, Giuseppe (author), Pavel, M.D. (author), Barakos, George (author), White, Mark (author), Mulder, Max (author)
Helicopters are currently used in important applications providing a valuable contribution to society and economic growth. Thanks to their operational flexibility it is possible to accomplish increasingly complex missions. If the expansion of the usage of rotorcraft is to follow the pace of growth achieved by the fixed-wing public transport...
journal article 2018
document
Scaramuzzino, Paolo Francesco (author), D’Intino, Giulia (author), Geluardi, Stefano (author), Pavel, M.D. (author), Pool, D.M. (author), Stroosma, O. (author), Mulder, Max (author), Bülthoff, Heinrich H. (author)
Today, simulators are achieving levels of complexity and cost that are comparable to those of the aircraft they should replace. For this reason, questions have been raised, in both the technical and training communities, on the required level of simulation 1delity for effective pilot training. Computer Based Trainers (CBTs) are not currently...
conference paper 2018
Searched for: author%3A%22Pavel%2C+M.D.%22
(1 - 20 of 41)

Pages