Searched for: %2520
(21 - 40 of 4,387)

Pages

List view
Grid view
document
Lemmers, A.J.J. (author), Kuiper, P.J. (author)
Traditionally the Flight Simulation Department of the National Aerospace Laboratory NLR is strong in high fidelity human-in-the-loop flight simulation. In order to open up more possibilities for NLR flight simulators as participants in networked simulation exercises, NLR started the project MAPLESIM. During the first part of this project a high...
report 2001
document
Busink, J.J. (author)
In order to limit the effects caused by air traffic in terms of community noise the European Union and governments are currently studying possible increased noise stringencies that could be introduced by the International Civil Aviation Organisation (ICAO). Recent studies focus on stringency measures that propose an 8 dB, 11 dB and 14 dB...
report 2001
document
Zwemmer, R. (author), Quartel, A. (author), Veltman, D.L. (author)
This paper describes a Signal Transfer System (STS) for use in a Wind Tunnel model propeller. In order to extend the capacity of a conventional mechanical slip ring assembly an electronic Multiplexer has been developed, which is located in the rotating part of a propeller-hub. The amplified transducer signals are multiplexed, digitised and...
report 2001
document
van Benthem, R.C. (author), van den Assem, D. (author), Krooneman, J. (author)
During long-duration manned space-missions complex chemical and biological processes need to be managed accurately for the recycling of human wastes and to produce human consumables. As a result, there is an increasing interest in how the characteristics of microbes are influenced by micro-gravity. Compact optical instrumentation allows for real...
report 2001
document
Delil, A.A.M. (author), Woering, A.A. (author), Pohl, M. (author), Verlaat, B. (author), Boer Rookhuizen, H. (author), Perrin, E. (author), Battiston, R. (author)
The Alpha Magnetic Spectrometer AMS-2, planned for a five years mission as attached payload on the International Space Station ISS, is an international experiment searching for anti-matter, dark matter, and missing matter. AMS-2, an improved version of AMS-1 flown on STS 91, consists of various particle detector systems, one of these being the ...
report 2001
document
Tinga, T. (author), de Wolf, W.B. (author), Visser, W.P.J. (author), Woldendorp, S. (author)
A method to predict gas turbine component life based on engine performance analysis is demonstrated on a hot section gas turbine component. The mechanical and thermal loading of the first stage high pressure turbine rotor blade of the FlOO-PW-220 engine, one of the most severely loaded components in the engine, is analyzed and a life assessment...
report 2001
document
Wubben, F.J.M. (author), Galis, S.P. (author)
In order to minimise the differences in noise exposure between forecast and control in specific control points, a new forecast model is described, based on historical noise data at the control points. By clustering the noise data of individual flights as function of aircraft type (or category), runway, route and flight procedure, energetically...
report 2001
document
Rouwhorst, W.F.J.A. (author), Selier, M. (author)
This document contains a description of the REAL project (Robust and Efficient Autopilot Control Laws design). The project was carried out in the fourth Framework Program of the Commission of the European Communities (CEC). A detailed description of the technical achievements is given in the Final Technical Report [FTROl]. Exploitation and...
report 2001
document
Delil, A.A.M. (author)
Paper presented at the 1st International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics, Kruger Park, South Africa, 8-10 April 2002.
report 2001
document
Wanhill, R.J.H. (author)
Archaeological silver may be embrittled by long-term corrosion and microstructural changes. The embrittlement increases with increasing grain size, and the combination of a large grain size with synergistic embrittlement (conjoint action of corrosion-induced and microstructurally-induced embrittlement) is particularly detrimental....
report 2001
document
Haringa, M.J. (author), Meijer, J.J. (author), Rijzebol, K.R. (author)
The Royal Netherlands Air Force has carried out an analysis and test program with the F-16A/B (Mid Life Update version) aircraft for the airworthiness certification of the Lockheed Martin Overseas Corporation "Enhanced Targeting Pod" and the British Aerospace Systems "Falcon Owl" navigation pod (earlier known as "Atlantic" Navigation pod)....
report 2001
document
Koolloos, M.F.J. (author), ten Hoeve, H.J. (author), Grooteman, F.P. (author), de Koning, A.U. (author)
Multiple Site Damage (MSD) is a typical problem for ageing civil and transport aircraft, where the large number of fuselage pressure cycles may cause fatigue cracking at multiple rivet locations. The residual strength of a panel with a leading crack and MSD cracks is lower than that of a panel with the same leading crack but without MSD. This...
report 2001
document
van de Vijver, Y.A.J.R. (author), Stil, J.G. (author)
In this paper information management challenges are described, and ways to achieve coalition interoperability, by defining a road map towards a NATO virtual enterprise. Such an enterprise strongly supports the "interoperable communications"-target of the Defence Capabilities Initiative (DCI), launched at the NATO summit in Washington, April 1999...
report 2001
document
Boelens, O.J. (author), Laban, M. (author), van Beek, C.M. (author), van der Leeden, R. (author)
In this report the contribution of the National Aerospace Laboratory NLR to the 'CFD Drag Prediction Workshop' organized by the AIAA in Anaheim, CA, on June 9-10, 2001, is presented. This contribution consists of both the results of all test cases and a discussion on the accurate computations of drag coefficients. Two approaches are presented...
report 2001
document
Berglind, T. (author), van der Burg, J.W. (author)
A joint European initiative to develop hybrid grid based CFD-technology with a short problem-turnaround time applicable to complex aircraft configurations has been undertaken. In the context of the Brite-Euram fourth framework programme two projects have been executed, namely FASTFLO I (1996-1998) and FASTFLO II (1998-2000). The objective of...
report 2001
document
Timmermans, L.J. (author), Zwartbol, T. (author), Oving, B.A. (author), Casteleijn, A.A. (author), Brouwer, M.P.A.M. (author)
Supported by Research and Development programs of the European Space Agency (ESA), simulation and test tools are being developed to improve the life cycle cost efficiency of spacecraft development. Standardisation and rationalisation, use of (C)OTS products, reuse of both software and hardware are some of the lines along which schedule...
report 2001
document
Schepers, J.G. (author), Oerlemans, S. (author), Guidati, G. (author), Wagner, S. (author)
The objective of the European project DATA (Design and Testing of Acoustically Optimized Airfoils for Wind Turbines) is a reduction of trailing-edge (TE) noise by modifying the airfoil shape and/or the application of trailing-edge serrations. This paper describes validation measurements that were performed in the DNW-LLF wind tunnel, on a model...
report 2001
document
Vankan, W.J. (author), Schultheiss, B.C. (author), Baalbergen, E.H. (author)
The large variety of software tools that is used in multidisciplinary aircraft design processes, and the associated data formats and heterogeneous computer infrastructure, impose undesirable ICT complications to end users. Efficient usage of present technologies such as CURB A, Java and HTTP, shields end users from these complications and...
report 2001
document
Brandsma, F.J. (author), Kok, J.C. (author), Dol, H.S. (author), Elsenaar, A. (author)
Computations are presented for the vortical flow around a sharp-edged cropped delta wing with 65° leading edge sweep using a computational method based on the Reynolds-averaged Navier-Stokes equations. It is demonstrated that turbulence modelling plays a crucial role in the ability to capture the vortical structures. Standard one- and two...
report 2001
document
van den Berg, A.N. (author), Veerman, H.P.J. (author), Breeuwer, E. (author), Farnworth, R. (author)
Prior to the operational implementation of EGNOS, the civil aviation community requires assurance with respect to the performance and safety of EGNOS-based operations. In the frame of the GNSS-1 Operational Validation (GOV) project, EUROCONTROL requested the development of a platform to be used for flight trials. In this context the Netherlands...
report 2001
Searched for: %2520
(21 - 40 of 4,387)

Pages

List view
Grid view