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Brouwer, M.P.A.M. (author), Pronk, Z. (author), Visser, F.B. (author), de Haas, J. (author)At the early beginning (1989) of implementation of the European User Support Organisation (USO) concept, development and implementation of a Dutch Utilisation Centre (DUC) started at NLR premises. After development of several pilot DUC facilities, DUC participated in a Columbus simulation mission and in the 2nd International Micro-gravity...report 1996
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Chu, Q.P. (author), Zwartbol, T. (author), van Woerkom, P.T.L.M. (author)The objective of the present paper is to give an overview of spacecraft attitude determination with GPS. GPS receivers with single or multiple antennas nowadays are low-cost sensors that constitute a valuable complement to existing sensor suites. GPS has been widely used for positioning and vehicle navigation. However, using GPS as an attitude...report 1995
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Zuidgeest, R.G. (author)This report provides an overview of the emerging technology Distributed Artificial Intelligence, in particular in the area of Distributed Problem Solving (DPS). DPS refers to coarse-grained (task-level) problem decomposition resulting in a number of expert or knowledge-based systems, generally called agents of which each exhibits some...report 1995
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Sonnenschein, F.J. (author), Nicolai, R.J. (author), Versteeg, M.H.J.B. (author), Beerthuizen, P.G. (author), Kollen, J.H. (author), van Rossem, P.H. (author), Storni, B. (author)Currently a new generation Test and Verification Equipment (TVE) is being developed under ESA contract as successor "to the Test and Simulation Assembly (TSA) for a Modular Attitude Control System (MACS). It will be a modular system that can be tailored for any Attitude and Orbit Control Subsystems (AOCS). The gained experience with complex AOCS...report 1994
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Pronk, Z. (author)Within the studies on Advanced Man-Machine Interfaces and Crew Support (AMMI & CS), being part of the Crew Workstation Testbed activities at ESTEC, a Dutch consortium is preparing the implementation of the User Support Organisation (USO) concept in a ground-based mission simulation, planned for May 1994. The objective of the implementation study...report 1994
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Pronk, C.N.A. (author), Visser, F.B. (author), Sijmonsma, R.M.M. (author)Within the studies on Advanced Man-Machine Interfaces and Crew Support (AMMI&CS), being part of the Crew Workstation Testbed activities at ESTEC, a Dutch consortium is preparing the implementation of the User Support Organisation (USO) concept in a ground-based mission simulation. The objective of the Implementation study is to demonstrate and...report 1993
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Donker, J.C. (author), Piers, M.A. (author)Under contract with the Netherlands Agency for Aerospace Programs (NIVR), the National Aerospace Laboratory NLR has investigated the feasibility of knowledge-based systems to assists ground crews in corrective maintenance of complex aircraft systems. For this feasibility study, the Fokker airconditioning system was chosen as a representative...report 1992
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Riks, E. (author), Merazzi, S. (author), de Boer, A. (author)In many practical problems of plate and shell buckling, the pre-buckling state is linear and can be obtained from the linearized equations of elasticity. The computation of the buckling load and mode in such cases correponds to a linear eigenvalue problem that can easily be formulated and implemented in a finite element code. This report...report 1988
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van Woerkom, P.T.L.M. (author)If one wishes to simulate the djmamics of a structurally flexible, mechanical system with the aid of rigid body software, one may be tempted to use the "fictitious joints" modelling technique recently advocated In literature. The technique is believed to be promising in the case of flexible, slender beams, such as some of the links of a space...report 1987
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- Boersen, S.J. (author) report 1982