Searched for: subject%3A%22Aviation%22
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Simons, M. (author), Wilschut, E.S. (author), Valk, P.J.L. (author)
Introduction : Dutch North Sea helicopter operations are characterized by multiple sector flights to offshore platforms under difficult environmental conditions. In the context of a Ministry of Transport program to improve safety levels of helicopter operations, we assessed effects of pre-duty sleep, pre-duty travel time, and workload factors on...
article 2011
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Groen, E. (author), Bos, J.E. (author), Nooij, S.A.E. (author)
article 2011
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Weiss, M. (author), Bucco, D. (author)
Since saturation often plays an important role in limiting the performance of guidance loops, performance analysis of guidance loops with saturation has been a popular subject of investigation. Most work so far has concentrated on the effect of saturation on stochastic performance of guidance loops, using as an essential tool stochastic...
conference paper 2011
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Mert, A. (author), Bles, W. (author)
Introduction: In tilting trains partial alignment to the gravito-inertial force (GIF) in the curves seems to be the best tilt compensation to reduce the incidence of motion sickness. We investigated the effect of alignment to the GIF on the development of motion sickness during low-frequency horizontal motion. Methods: There were 12 healthy...
article 2011
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Köppen, M. (author), Hirsch, M. (author), Ernst, J. (author), Vliegenthart, W.A. (author), Ye, M.Y. (author), Bykov, V. (author), Schauer, F. (author)
The stellarator Wendelstein 7-X (W7-X) is presently under construction at the Max-Planck-Institut für Plasmaphysik in Greifswald, Germany. The plasma density profile will be measured by two-colour interferometry where for each line of sight through the plasma the phase shifts of two far-infrared laser beams are compared. Due to the 3D shape of...
article 2011
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Doornink, J. (author), Coesel, M. (author), Lemmen, M.H.J. (author), van 't Hof, A. (author)
The EarthCARE satellite mission objective is the observation of clouds and aerosols from low Earth orbit. The payload will include active remote sensing instruments being the W- band Cloud Profiling Radar (CPR) and the ATLID LIDAR. These are supported by the passive instruments BroadBand Radiometer (BBR) and the Multispectral Imager (MSI)...
conference paper 2011
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van Rossum, W.L. (author), de Wit, J.J.M. (author), Otten, M.P.G. (author), Huizing, A.G. (author)
This presents three valuable applications of scalable multifunction RF (SMRF) systems. These systems allow radar, ESM, and communication functionality using a single front-end architecture. With the use of a novel system design tool, concepts for SMRF architectures for airborne, ground-based and naval applications have been obtained based on a C...
article 2011
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van Diggelen, J. (author), Janssen, J. (author), Mioch, T. (author)
Modeling and Simulation (M&S) is the use of (computer-) simulated models to develop data as a basis for making managerial or technical decisions. Applications of M&S are wide spread, ranging from system simulation in early design stages, atmosphere modeling for weather forecasting, graphical environment modeling for serious gaming, physical...
conference paper 2011
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Looije, R. (author), Mioch, T. (author), Osterloh, J.P. (author), Frische, F. (author)
HUMAN Model-based Analysis of Human Errors during Aircraft Cockpit System Design. Technical Report HUMAN Project, proj. number 211988, HUMAN/WP4/TNO/D4.8
report 2011
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Kamphues, F.G. (author), Henselmans, R. (author), Rijnveld, N. (author), Lemmen, M.H.J. (author), Doelman, N.J. (author), Nijkerk, M.D. (author)
ESO has developed a concept for a compact laser guide star unit for use in future Adaptive Optics (AO) systems. A small powerful laser is combined with a telescope that launches the beam, creating a single modular unit that can be mounted directly on a large telescope. This approach solves several of the stability problems experienced with a...
conference paper 2011
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Valente Pais, A.R. (author), van Paassen, M.M. (author), Mulder, M. (author), Wentink, M. (author), TNO Defensie en Veiligheid (author)
The development and tuning of flight simulator motion filters relies on understanding human motion perception and its limitations. Of particular interest to flight simulation is the study of visual-inertial coherence zones. Coherence zones refer to combinations of visual and inertial cues that, although not being physically coherent, still...
article 2010
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de Winkel, K.N. (author), Correia Grácio, B.J. (author), Groen, E.L. (author), Werkhoven, P.J. (author), TNO Defensie en Veiligheid (author)
Knowledge of human motion perception can be applied in the optimization of motion cueing algorithms. In the past it has been shown that some discrepancies between the amplitude or phase of a visual and inertial cue go unnoticed. These acceptable discrepancies are referred to as coherence zones. In the present experiment we investigate whether a...
conference paper 2010
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Valente Pais, A.R. (author), van Paassen, M.M. (author), Mulder, M. (author), Wentink, M. (author), TNO Defensie en Veiligheid (author)
Following a previous study in the Simona simulator on perception of coherent visual and inertial cues in a flight simulator, an experiment is performed in the Desdemona simulator to investigate the influence of the frequency of visual and inertial stimuli on the limits of the perceived coherence zone. The coherence zone is defined as the range...
conference paper 2010
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Gill, E. (author), Maessen, D. (author), Laan, E.C. (author), Kraft, S. (author), Zheng, G. (author), TNO Industrie en Techniek (author)
Large current uncertainties in the characteristics of aerosols in the Earth's atmosphere preclude meaningful climate model evaluation. The FAST mission will contribute to the characterization of aerosols and their relation to climate change through a synoptic evaluation of local, regional and global aerosol data and altitude profiles of the...
article 2010
document
Laan, E. (author), TNO Industrie en Techniek (author)
Integrated applications based on Earth-observation, telecommunication and navigation capabilities, both from Space and from terrestrial and in-door assets, will call for smaller satellite systems providing higher revisit times. This trend will only materialize in case instrument and satellite platform technology can keep up. Amongst others,...
conference paper 2010
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Smets, N.J.J.M. (author), Abbing, M.S. (author), Neerincx, M.A. (author), Lindenberg, J. (author), van Oostendorp, H. (author), TNO Defensie en Veiligheid (author)
The Mission Execution Crew Assistant (MECA) is developing a distributed system of electronic partners (ePartners) to support astronauts performing nominal and off- nominal actions in long duration missions. The ePartners' support should adequately deal with the dynamics of the context, operations, team and personal conditions, which will change...
article 2010
document
Valente Pais, A.R. (author), van Paassen, M.M. (author), Mulder, M. (author), Wentink, M. (author), TNO Defensie en Veiligheid (author)
The development and tuning of flight simulator motion filters relies on understanding human motion perception and its limitations. Of particular interest to flight simulation is the study of visual-inertial coherence zones. Coherence zones refer to combinations of visual and inertial cues that, although not being physically coherent, still...
conference paper 2010
document
TNO Industrie en Techniek (author), van der Wal, L.F. (author), Eldering, C.J.J. (author), van Putten, N.J. (author)
In 2001 the European Space Agency (ESA), the Dutch Ministry of Economic Affairs and the Netherlands Organisation of applied scientific research TNO initiated the Dutch Technology Transfer Programme (DTTP). Since then, 'technology transfer' has been a relevant part of Dutch space policy. The DTTP aimed to promote the transfer of knowledge and...
conference paper 2010
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Veraar, R.G. (author), TNO Defensie en Veiligheid (author)
To enable direct experimental duplication of the inflight heat flux distribution on supersonic and hypersonic vehicles, an aerodynamic heating scaling technique has been developed. The scaling technique is based on the analytical equations for convective heat transfer for laminar and turbulent boundary layers that follow from applying the...
conference paper 2009
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van Breukelen, E. (author), Sanders, B.H. (author), Schuurbiers, C.A.H. (author), TNO Defensie en Veiligheid (author)
CubeSats are becoming more mature and many capabilities previously associated with microsatellites and bigger platforms are coming to the CubeSat. Moreover, they are becoming available as commercial off the shelf systems with standardized interfaces. TNO Defence and Security of the Netherlands is in the final stage of development of a Cool Gas...
conference paper 2009
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