Searched for: subject%3A%22Helicopter%22
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Pruijsers, Tom (author)
This work is a part of the Automated Rotor Blade Inspection (ARBI) project. ARBI aims to improve the rotorcraft RTB process with novel rotor blade measurement equipment such as 3D scanning, thermography and shearography. The research aims to quantify the effects of changes in blade properties on rotor vibration levels for CH-47 Chinook. This is...
master thesis 2021
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Wellens, Lotte (author)
Model predictive control is an optimal, model-based control method that has the powerful capability of directly including input and output constraints. Next to this, it is known that helicopters are hard to fly with its complex, unstable and highly coupled dynamics. With the introduction of the concept of handling qualities, guidelines for...
master thesis 2021
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Eijkman, M. (author)
By 2030, a new amphibious transport ship is to be available for the Dutch Royal Navy. In light of the foreseen rise in airborne operations from the ship, more insight is desired into the impact of ship design choices on helicopter operational availability. There is need for a predictive tool, which can be used in the early design phase of the...
master thesis 2021
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Stokkermans, T.C.A. (author)
This research is on the aerodynamics of propellers in interaction. As a propeller is dependent on the flowfield it encounters, any disturbance in that inflow results in changes in loading on the propeller. This can result in propulsive efficiency changes and affect stability through generation of in-plane forces and out-of-plane moments. The...
doctoral thesis 2020
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Pardi, Alessandro (author)
This project investigates the use of Augmented Reality (AR) in the context of research flight simulators to increase their visual fidelity in rotary-wing applications. The field of view of existing research simulators is often designed after fixed-wing aircraft and can be largely inferior to what is required to simulate helicopters. In...
master thesis 2020
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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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Jonkheijm, Laurens (author)
Due to an exponential growth in the number of shipments of Unmanned Aerial Systems (UAS), the amount of these devices operating in the sky has increased remarkably over the last few years. This led to an increasing number of proximity incidents with manned aircraft. Since these devices share certain airspace with rotorcraft, the question arises...
master thesis 2020
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Arons, Mitchell (author)
The main objective was to analyse the effects of rotor dynamics, and in particular lead-lag and flapping dynamics, on incremental backstepping (IBS). The main focus in this research was on the angular rate controller of a rotorcraft, since it required an idealised rotorcraft model to establish the IBS controller. The idealised rotorcraft model...
master thesis 2020
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Mavrocordatos, Nicolas (author)
Automation is playing an increasingly important role in today’s society and is revolutionising nearly all industries. In this thesis, the helicopter industry is considered. Helicopters are complex systems capable of Vertical Take-Off and Landing (VTOL). Many companies and organisations are now looking to automate VTOL vehicles in order to break...
master thesis 2020
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Miletović, I. (author)
Flight simulators, or Flight Simulation Training Devices (FSTDs), offer great benefits in terms of safety and cost associated with pilot training and certification. To warrant uniform certification standards and to prevent adverse pilot training, (sub)system fidelity requirements are imposed by the Federal Aviation Authority (FAA) and European...
doctoral thesis 2020
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Ahmad, Kamran (author), Baig, Yasir (author), Rahman, H. (author), Hasham, Hassan Junaid (author)
Unlike metal structure, composite structures don’t give any clue till the fatal final collapse. The problem is more complicated when applied load on the structure is aeroelastic in nature. Under such loading, composite laminate experiences stresses. The first layer failure happens when stresses in the weakest ply exceed the allowable strength...
journal article 2020
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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, J. (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
Searched for: subject%3A%22Helicopter%22
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