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Declerck, Laurent (author)The compound helicopter gains interest as operational needs push future rotorcraft capabilities beyond current standards. The compound helicopter is investigated as part of the Future Vertical Lift Program to replace the entire U.S. Army helicopter fleet. The compound helicopter resembles a mix between a fixed-wing aircraft...master thesis 2019
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König, Simon (author)Water accumulating in the fuel tanks of any aircraft presents an unacceptable safety hazard. This accumulation, which is due to a combination of physical phenomena, is difficult to assess and therefore not well known. The purpose of this project is the development of a lightweight computational prediction method for water accumulation in...master thesis 2019
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Romani, G. (author), Casalino, D. (author)The aim of this paper is to assess the accuracy, capabilities and computational performances of the Lattice-Boltzmann/Very Large Eddy Simulation Method to predict the unsteady aerodynamic loads, the rotor wake development and the noise radiation of helicopter rotors in strong Blade-Vortex Interaction conditions. The numerical flow solution is...journal article 2019
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Meulenbeld, Joost (author)Previous years have seen a rise in the use of Unmanned Aerial Vehicles (UAVs). Reaching a large endurance and range while being able to perform Vertical Take-Off and Landing (VTOL) landings allows a broad range of applications. For this purpose the DelftaCopter (DC) was developed, a tilt-body tailsitter UAV. It hovers using a single helicopter...master thesis 2018
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Blokland, Auke (author)The current procedure of the 11 Air Manoeuvre Brigade (11 AMB) is based on a manual non integrated and slow method that uses only outdated and only topographical data. In the procedure are all 5 aspects of a potential landing zone taken into account, the so called 5S: Slope, Shoots, Surface, Size and Security.<br/>This research led to an...master thesis 2018
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A. Petrovsky, A. (author), Doole, M.M. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tomasello, F. (author)The objective of this paper is to raise awareness about the significance of collecting and ensuring the quality of the obstacle data required for the safety of air navigation for both manned and unmanned aviation. This information could be of importance to geodetic, CityGML, 3D model and Building Information Management (BIM) community. With the...conference paper 2018
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Hoogendoorn, Joey (author)Aircraft manufacturers are increasingly exploring emission-free flight or emission reduction for larger passenger aircraft. The low energy density of state-of-the-art battery technology limits the application to small, electric, fixed wing aircraft up to a flight time of approximately one hour. To overcome these limits, a combination of fuel...master thesis 2018
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Viguera Leza, Daniel (author)The flow field subjected to the influence of the helicopter rotor is characterized by its three-dimensional pattern and unsteadiness. The accurate modeling of the flow around the rotor blades addressed by Computational Fluid Dynamics (CFD) simulations is associated with high computational costs. The complexity of the analysis can be reduced by...master thesis 2018
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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
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Vicente Melo E Carvalho Marques, Mariana (author)L1 adaptive control is a relatively new technique that attempts to tackle the robustness shortcoming of the MRAC controller by applying a low pass filter to the control input. It can be used as an augmentation loop using baseline controllers such as backstepping or PID. This controller has been implemented as an augmentation loop with both these...master thesis 2017
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Gennaretti, Massimo (author), Bernardini, Giovanni (author), Serafini, Jacopo (author), Anobile, A. (author), Hartjes, S. (author)This paper investigates different methodologies for the evaluation of the acoustic disturbance emitted by helicopter’s main rotors during unsteady maneuvers. Nowadays, the simulation of noise emitted by helicopters is of great interest to designers, both for the assessment of the acoustic impact of helicopter flight on communities and for the...journal article 2017
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Arush, Ilan (author), Pavel, M.D. (author)Helicopter performance relies heavily on the available output power of the engine(s) installed. A simplistic single-variable analysis approach is often used within the flight-testing community to reduce raw flight-test data in order to predict the available output power under different atmospheric conditions. This simplistic analysis approach...journal article 2017
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Drop, F.M. (author)Understanding how humans control a vehicle (cars, aircraft, bicycles, etc.) enables engineers to design faster, safer, more comfortable, more energy efficient, more versatile, and thus better vehicles. In a typical control task, the Human Controller (HC) gives control inputs to a vehicle such that it follows a particular reference path (e.g.,...doctoral thesis 2016
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Kerkkamp, J.S.F. (author)With the increased use of small unmanned systems, and even automated flight, safety is becoming an issue. For helicopters specifically, engine failure typically results in a crash. For manned helicopters, autorotation is a manoeuvre used to reduce the downward speed and land at safe velocities. In this thesis, we examine a technique of modelling...master thesis 2016
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Noordam, N.M. (author)Force feedback in helicopters can improve the performance of the pilot, decrease direct maintenance costs and increase the safety of every flight. Traditional force feedback is done with the use of a force sensor. In this thesis the use of a position based, feedforward control loop to achieve the same purpose is investigated. The limits of...master thesis 2016
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Slinger, B.J.M.M. (author)This paper presents an attitude controller for a small helicopter Unmanned Aerial Vehicle (UAV) based on Incremental Nonlinear Dynamic Inversion (INDI). INDI is a sensor-based control method which responds quickly to the commanded input, but also to disturbances. While previous implementations of INDI used a control effectiveness matrix...master thesis 2016
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Dekker, S.H. (author), Wurzel, G. (author), Alderliesten, R.C. (author)Fatigue life is a random variable. The reliability of a conservative fatigue life prediction for a component in the helicopter dynamic system thus needs to be substantiated. A standard analytical substantiation method uses averaged manoeuvre loads instead of seeing manoeuvre loads as a random variable whose distribution is estimated with limited...journal article 2016
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Tod, G. (author), Pavel, M.D. (author), Malburet, F (author), Gomand, J (author), Barre, PJ (author)The paper reassesses the mechanism of biodynamical feedthrough coupling to helicopter body motion in lateral-roll helicopter tasks. An analytical bio-aeroelastic pilot–vehicle model is first developed and tested for various pilot’s neuromuscular adaptions in the lateral/roll axis helicopter tasks. The results demonstrate that pilot can...journal article 2016
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Taamallah, S. (author)Our research objective consists in developing a, model-based, automatic safety recovery system, for a small-scale helicopter Unmanned Aerial Vehicle (UAV) in autorotation, i.e. an engine OFF flight condition, that safely flies and lands the helicopter to a pre-specified ground location. In pursuit of this objective, the contributions of this...doctoral thesis 2015
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- Verhagen, M.R. (author) master thesis 2015