Searched for: %28harbor+OR+port%29
(1 - 20 of 893)

Pages

document
Lovato, S. (author)
The increasing size of today's ships is a major concern for navigation in confined waters. In order to ensure safe manoeuvres, port authorities prescribe, among others, a minimum under-keel clearance that must be maintained by the ships during navigation.<br/>However, the seabed of ports situated at the estuaries or along rivers is often covered...
doctoral thesis 2023
document
Kementzetzidis, E. (author)
At the end of 2019, the European Union (EU) put forward the European Green Deal to facilitate the technological progress necessary to achieve CO2-neutrality by 2050. Such a monumental achievement would require massive investments in infrastructure for the harvesting, storage and the transnational transportation of green energy. To date, the more...
doctoral thesis 2023
document
van Maren, D.S. (author), Beemster, J. G.W. (author), Wang, Zhengbing (author), Khan, Z. H. (author), Schrijvershof, R. A. (author), Hoitink, A. J.F. (author)
At a global scale, intertidal areas are being reclaimed for agriculture as well as urban expansion, imposing high human pressure on the coastal zone. The Ganges-Brahmaputra Delta (GBD) is an exponent of this development. In this delta, land reclamation accelerated in the 1960's to 1980's, when polders were constructed in areas subject to...
journal article 2023
document
Saez Ortuño, M.A. (author), Yin, F. (author), Gangoli Rao, A. (author), Vos, Roelof (author), Proesmans, P. (author)
As climate change aggravates, the aviation sector strives to minimize its climate footprint. To this end, international organizations, such as ICAO and ACARE, are promoting mitigation measures including novel technologies, operations, and energy carriers to reduce aircraft emissions significantly. Hydrogen (H2) as an alternative fuel has the...
conference paper 2023
document
Zoppini, G. (author), Sequeira, A.D. (author), Michelis, Theodorus (author), Ragni, D. (author), Kotsonis, M. (author)
The present work details the steady and unsteady flow topology in the vicinity of an array of periodically spaced super-critical (i.e. causing flow tripping) discrete roughness elements (DRE) applied in a swept wing boundary layer. The stationary flow field is acquired by means of high-magnification dual-pulse tomographic particle tracking...
conference paper 2023
document
Bouwman, F. (author), Stroosma, O. (author), in 't Veld, A.C. (author), Mulder, Max (author)
Preventing Loss of Control In-flight (LOC-I) in commercial and general aviation is an active research area with numerous proposed solutions. One of these solutions aims to prevent lateral LOC-I, a special type of LOC-I, by presenting a roll-performance based minimum lateral control speed to the pilot in roll-limited situations, such as single...
conference paper 2023
document
Joosten, S.K.B. (author), Stroosma, O. (author), Vos, Roelof (author), Mulder, Max (author)
Flying wings are known for their limited lateral-directional stability and handling qualities. This study aims at assessing the lateral-directional handling qualities of a conceptual flying wing aircraft currently in development at TU Delft, the Flying-V, in a moving-base flight simulator. It focuses on two aspects: First assess the lateral...
conference paper 2023
document
van Beers, J.J. (author), de Visser, C.C. (author)
Ensuring the reliability and validity of data-driven quadrotor model predictions is essential for their accepted and practical use. This is especially true for grey- and black-box models wherein the mapping of inputs to predictions is not transparent and subsequent reliability notoriously difficult to ascertain. Nonetheless, such techniques are...
conference paper 2023
document
Carrillo Córcoles, X. (author), De Breuker, R. (author), Sodja, J. (author)
Previous numerical and experimental studies have shown the load alleviation capabilities of the flared folding wingtip. However, they have also shown the complex dynamics of the system and the limitations in the results obtained by modeling such an aeroelastic system using linear models, which cannot capture the effects of the large wingtip...
conference paper 2023
document
Bonnin, V.O. (author), Hoogreef, M.F.M. (author), de Vries, R. (author)
The impact of the ICAO code C gate span limit is assessed on the sizing of a serial Hybrid Electric Aircraft (HEA) of increasing Degree of Hybridization (DoH). For a set of Top Level Aircraft Requirements (TLARs) similar to the ATR-42, it is shown that the increase in MTOM due to the presence of the battery is such that only a maximum DoH under...
conference paper 2023
document
Rahman, H. (author), De Breuker, R. (author), Castro, Saullo G.P. (author)
In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...
conference paper 2023
document
Georgopoulos, Panagiotis (author), Sodja, J. (author), De Breuker, R. (author)
In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...
conference paper 2023
document
Torelli, R. (author), Stroosma, O. (author), Vos, Roelof (author), Mulder, Max (author)
An improved understanding of pilot’s control behavior adaptations in response to sudden changes in the vehicle dynamics is essential for realizing adaptive support systems that remain effective when task characteristics suddenly change. In this paper, we replicate, extend, and validate the ‘adaptive pilot model’ proposed by Hess to verify its...
conference paper 2023
document
Jakimovska, N. (author), Pool, D.M. (author), van Paassen, M.M. (author), Mulder, Max (author)
An improved understanding of pilot’s control behavior adaptations in response to sudden changes in the vehicle dynamics is essential for realizing adaptive support systems that remain effective when task characteristics suddenly change. In this paper, we replicate, extend, and validate the ‘adaptive pilot model’ proposed by Hess to verify its...
conference paper 2023
document
van Overeem, S. (author), Wang, Xuerui (author), van Kampen, E. (author)
Considerable growth in the number of passengers and cargo transported by air is predicted. Moreover, aircraft noise and climate impact become increasingly important factors in aircraft design. These existing challenges in aviation boost interest in the design of innovative aircraft configurations. One of these configurations is a V-shaped flying...
conference paper 2023
document
Vasilopoulos, V.G. (author), Borst, C. (author), van Paassen, M.M. (author), in 't Veld, A.C. (author), Mulder, Max (author)
The Continuous Descent Approach (CDA) offers reduced aircraft noise emissions and fuel consumption, but the obstacle limiting it to reduced traffic density conditions, is the low predictability of the trajectory and Estimated Time of Arrival (ETA). The solution proposed by this research is to develop a pilot support interface to facilitate the...
conference paper 2023
document
Vugts, G. (author), Stroosma, O. (author), Vos, Roelof (author), Mulder, Max (author)
A novel aircraft configuration, the tailless Flying-V, is examined for its longitudinal handling qualities in cruise by means of piloted simulations. The Flying-V is controlled by two aileron/elevator (elevon) surfaces on each side, and rudders on each wingtip. Two control allocation schemes were created: a conventional one where both inboard...
conference paper 2023
document
Mooij, E. (author), Wang, Xuerui (author)
This paper focuses on the attitude control and propellant slosh suppression of aeroelastic launch vehicles in a turbulent atmosphere. For a five-degree pitch-angle block command, the tracking performance of the selected Incremental Non-Linear Dynamic Inversion Sliding Mode Controller (INDI-SMC) shows excellent tracking performance. However,...
conference paper 2023
document
Völker, W.J.E. (author), Li, Y. (author), van Kampen, E. (author)
Recent research on the Flying V - a flying-wing long-range passenger aircraft - shows that its airframe design is 25% more aerodynamically efficient than a conventional tube-and-wing airframe. The Flying V is therefore a promising contribution towards reduction in climate impact of long-haul flights. However, some design aspects of the Flying V...
conference paper 2023
document
Vasudevan, S. (author), De Breuker, R. (author), Wang, Xuerui (author)
This paper aims to explore the advantages offered by machine learning (ML) for dimensionality reduction of nonlinear transonic aerodynamics. Three ML techniques are evaluated in terms of their ability to generate interpretable low-dimensional manifolds of the transient pressure distributions over a NACA4412 airfoil equipped with a flap. These ML...
conference paper 2023
Searched for: %28harbor+OR+port%29
(1 - 20 of 893)

Pages