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Van Baelen, D. (author), Ellerbroek, J. (author), van Paassen, M.M. (author), Abbink, D.A. (author), Mulder, M. (author)
Modern aircraft use a variety of fly-by-wire control devices and combine these with a flight envelope protection system to limit pilot control inputs when approaching the aircraft limits. The current research project aims to increase pilot awareness of such a protection system through the use of force feedback on the control device, i.e.,...
conference paper 2020
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de Rooij, G. (author), Van Baelen, D. (author), Borst, C. (author), van Paassen, M.M. (author), Mulder, M. (author)
This paper describes the design and evaluation of a visual display in supplementing haptic feedback on the side stick as a way to communicate flight envelope boundaries to pilots. The design adds indications for the limits in airspeed, load factor, angle of attack and angle of bank to a standard Airbus primary flight display (PFD). The...
conference paper 2020
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Hoogreef, M.F.M. (author), de Vries, R. (author), Sinnige, T. (author), Vos, R. (author)
This paper presents a synthesis of aero-propulsive interaction studies performed at Delft University of Technology, applied to conceptual aircraft designs with distributed hybrid-electric propulsion. The studied aero-propulsive interactions include tip-mounted propulsion, wing leading edge distributed propulsion and boundary-layer-ingestion...
conference paper 2020
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Saunders, G.N. (author), Rans, C.D. (author), Teuwen, J.J.E. (author), Sinke, J. (author), Alderliesten, R.C. (author), van Valkenburg, W.F. (author)
Although aerospace traditionally has always had a multidisciplinary approach to engineering and design, the increasing complexity of aircraft and spacecraft and the rapid digitization within the aerospace industry has led to a large number of related engineering and scientific disciplines such as electrical engineers, computer scientist to work...
conference paper 2020
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Saunders, G.N. (author), Melkert, J.A. (author), Schuurman, M.J. (author)
This year, 2020, the Faculty of Aerospace Engineering at Delft University of Technology in the Netherlands celebrates its 80th birthday. This paper describes the history of the department since its founding in early 1940, just before the start of World War II in the Netherlands, until present day. The paper will highlight how its research and...
conference paper 2020
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Scholten, Pepijn (author), van Paassen, M.M. (author), Mulder, M. (author)
A variable stability in-flight simulator has the capabilities to change the response of an aircraft in-flight, often without changing the physical properties of the aircraft. The ability to adjust the aircraft response characteristics and handling qualities has various purposes, such as pilot training, control logic development and handling...
conference paper 2020
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de Vries, R. (author), Hoogreef, M.F.M. (author), Vos, R. (author)
In this paper a design-of-experiments is performed with the objective of determining the improvements in aeropropulsive efficiency required for a reduction in the energy consumption of turboelectric transport aircraft, when compared to conventional, gas-turbine based alternatives. Simplified representations of the powertrain and the...
conference paper 2020
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Mitrotta, Francesco (author), Rajpal, D. (author), Sodja, J. (author), De Breuker, R. (author)
Aeroelastic tailoring offers an effective way to exploit the anisotropic properties of the composite materials used in lightweight aerospace structures. This paper presents a design methodology for experimental wings that employ a typical wingbox structure. The proposed methodology combines three different analysis tools: Proteus, a low-fidelity...
conference paper 2020
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Borst, C. (author), van Paassen, M.M. (author), Mulder, M. (author), van Geel, Alexander (author)
Loss of control is the largest contributor to the yearly aviation death toll, with energy mismanagement in low-energy conditions as one of its main causal factors. This has led to a large emphasis from both scientific and aviation safety communities on the prevention of aircraft upset conditions. Changes in aircraft configuration largely impact...
conference paper 2020
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Zhang, Y. (author), Huang, Y. (author), Chu, Q. (author), de Visser, C.C. (author)
In this paper, an online flight envelope protection system is developed and implemented on impaired aircraft with structural damage. The whole protection system is designed to be a closed-loop of several sub-systems, including system identification, damage classification, flight-envelope prediction and fault-tolerant control. Based on the...
conference paper 2020
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Mourão Bento, H.F. (author), de Vries, R. (author), Veldhuis, L.L.M. (author)
Ducted propellers constitute an efficient propulsion-system alternative to reduce the environmental impact of aircraft. These systems are able to increase the thrust-to-power ratio of a propeller system by both producing thrust and by lowering tip losses of propellers. In this research, steady and unsteady RANS CFD simulations were used to...
conference paper 2020
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Pasqualetto Cassinis, L. (author), Fónod, R. (author), Gill, E.K.A. (author), Ahrns, Ingo (author), Gil Fernandez, Jesus (author)
This paper introduces a novel framework which combines a Convolutional Neural Network (CNN) for feature detection with a Covariant Efficient Procrustes Perspective-n-Points (CEPPnP) solver and an Extended Kalman Filter (EKF) to enable robust monocular pose estimation for close-proximity operations around an uncooperative spacecraft. The relative...
conference paper 2020
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Kemna, M.H.H. (author), Pool, D.M. (author), Wentink, Mark (author), Mulder, Max (author)
Numerous critical manual teleoperation tasks, such the control of the refueling boom during aerial refueling, require human controllers to accurately manipulate objects in the depth dimension, i.e., aligned with the viewing direction. To better understand the intricacies of depth control tasks and to be able to better support human controllers...
conference paper 2020
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Kootte, L.J. (author), Bisagni, C. (author)
A methodology is presented to investigate and improve the strength and damage tolerance of stiffened composite panels used in aerospace structures subjected to postbuckling deformation. These structural panels have the capability to operate in the postbuckling field, but the possible interaction between the postbuckling deformation and the...
conference paper 2020
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Pollack, T.S.C. (author), van Kampen, E. (author)
Reinforcement learning (RL) enables the autonomous formation of optimal, adaptive control laws for systems with complex, uncertain dynamics. This process generally requires a learning agent to directly interact with the system in an online fashion. However, if the system is safety-critical, such as an Unmanned Aerial Vehicle (UAV), learning may...
conference paper 2020
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Rubio Pascual, Berta (author), Vos, R. (author)
The Flying-V is a novel flying wing concept where the main lifting surface has been fully integrated with the passenger cabin. This study focuses on the effect of engine positioning on aerodynamic interference under regulatory and structural constraints. An initial benchmark for the lift-to-drag ratio is obtained from a baseline Flying-V...
conference paper 2020
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Palermo, M. (author), Vos, R. (author)
The experimental investigation into the aerodynamic characteristics of a 4.6%-scale half-model of a flying-wing transport aircraft is detailed. The study is performed in an open-jet wind tunnel where forces and moments are recorded using a 6-axis balance. Two control surfaces in the outboard wing are deflected to measure their effect in terms of...
conference paper 2020
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Labans, E. (author), Bisagni, C. (author)
3D-printing technology opens broad possibilities to manufacture structural shapes which could not be always possible by other methods. In the field of lightweight shells it allows to investigate structures with higher buckling loads than conventional shells. The buckling behavior of 3D-printed shells is studied in this paper where the shape of...
conference paper 2020
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Piessens, Tom (author), van Paassen, M.M. (author), Mulder, M. (author)
Teleoperation by definition means a deprivation of the teleoperator's senses, which can pose a handicap when operating, e.g., an UAV, in an unknown, perhaps even dynamic environment. Noticing moving obstacles in such a situation can prove to be quite difficult and the UAV runs the risk of colliding with them. Previous work designed a shared...
conference paper 2020
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Mkhoyan, T. (author), de Visser, C.C. (author), De Breuker, R. (author)
Advancements in intelligent aircraft controller design, paired with increasingly flexible and efficient aircraft concepts, create the need for the development of novel (smart) adaptive sensing suitable for aeroelastic state estimation. In contrast to rigid states, aeroelastic state estimation requires more measurement points (displacements and...
conference paper 2020
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