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Prins, G. (author)
report 1982
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Prins, G. (author)
report 1964
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Prins, G. (author)
report 1966
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Prins, G.T. (author)
report 1999
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Prins, J.J.M. (author), Pronk, C.N.A. (author)
In the framework of ESA's Columbus programme, Europe has to master new space operations such as remotely and/or automatically controlled rendezvous and docking (RVD) and manipulation. The need for a test bed for development and verifcation of the critical proximity operations involved was identified. This report presents the results of a study...
report 1985
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Burgert, R. (author), Kuiler, H.C. (author), Lange, G.C. (author), Prins, G. (author), Krietemeyer, J.H. (author), Hagenaar, J.M.C. (author), Keijzer, M.J. (author)
Verslag met een welkomstwoord van D.J. Wansink en R. Burgert, een inleiding door prof. Kuiler, en presentaties over de samenwerking tussen havens en de scheepsbouw, de sleutels van het deltagebied, de problematiek van de mechanisatie van de overslag van goederen, de ontwikkelingen in de scheepsbouw en de economische consequenties van de...
report 1966
document
Prins, A. (author), de Vries, M. (author)
Often the need is felt to schematize a river regime by one single discharge, the Dominant Discharge, and to use this discharge for prediction of changes in a riverstretch as a consequence of riverworks. This article discusses some methods, as given in literature, to determine the Dominant Discharge and gives a way to compute this discharge by...
report 1971
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Prins, J.J.M. (author)
The testing of Spacecraft Attitude and Orbit Control Subsystems is described from the early design up to in-flight, inclusive. Main topics dealt with are: description of three generic AOCS test classes, model philosophy, standardization, subsystem static test methods, subsystem dynamic test methods, generic test equipment and test facilities....
report 1984
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Prins, J.J.M. (author)
Torque and force irregularities of running reaction wheels were studied. In this first part of the study report results from noise measurements at constant wheel speeds on various types of current technology European reaction wheels, both with ball- and magnet bearings and with DC or AC drive motor, are presented. The measured noise in radial...
report 1982
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Prins, J.J.M. (author)
The existing fine attitude system of the Astronomical Netherlands Satellite was designed on the basis of conventional digital control techniques. The possibility of a more advanced approach is presented in this report. As an example, an alternative control algorithm for the scan mode has been developed with the use of state estimation and state...
report 1976
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Prins, J.J.M. (author), Dieleman, P. (author), Hoogstraten, J.A. (author)
The Hermes Manipulation System (HERA) will be an important part of the Hermes space plane system. The HERA is a sophisticated space manipulator system, which has to perform tasks ranging from capture and berthing to tool operation in various operational modes from fully automatic to purely manual. The HERA system main contractor is Fokker Space ...
report 1987
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Prins, G.T. (author), van den Bos, W. (author)
report 2000
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Guelman, M. (author), Roefs, H.F.A. (author), Prins, J.J.M. (author), Philippe, C. (author)
Currently planned and future space missions impose increasingly demanding stability and pointing requirements on spacecraft systems. Perturbations due to large amounts of liquids on board cannot be ignored. The ability to understand, predict and control the dynamics of the moving liquid is essential. At NLR, both numerical and experimental...
report 1994
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Prins, J.J.M. (author)
The increasing power of on-board processors allows more freedom in the design and operation of reaction wheel control systems. This report discusses several performance and implementation aspects of the operation of wheel systems which have their own internal feedback control system. A model following control concept is found to be superior. The...
report 1982
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Wetsteyn, L.P.M.J. (author), Duin, R.N.M. (author), Kromkamp, J.C. (author), Lathuhihin, M.J. (author), Peene, J. (author), Pouwer, A. (author), Prins, T.C. (author)
Na de voltooiing van de Oosterscheldewerken in 1987 werd de toevoer van zoetwater, en daarmee van de voor de groei van het fytoplankton benodigde nutriënten stikstof, fosfaat en silicaat, naar de Oosterschelde sterk verminderd. Vanaf dat moment zijn de concentraties stikstof en silicaat gaan afnemen; de afname van de fosfaat-concentraties zette...
report 2003
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Prins, J.J.M. (author)
With a set of linear accelerometers in a particular configuration, it is possible to measure angular velocity and linear and angular acceleration of the body the sensors are attached to. In this report the performance of a sensor system of this type, the so-called ballistometer, is studied in some detail. In particular, the sensitivity to sensor...
report 1993
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Prins, G. (author), Aberkrom, P. (author)
report 1966
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Okkes, A.G. (author), Prins, W.G. (author)
Document(en) uit de collectie Chemische Procestechnologie
report 1972
document
Prins, J.J.M. (author), Pronk, C.N.A. (author)
In the framework of ESA's Columbus programme, Europe has to master new space operations such as remotely and/or automatically controlled rendezvous and docking (RVD) and manipulation. The need for a testbed for development and verification of the critical proximity operations involved was identified. This report presents the results of a study...
report 1985
document
Prins, A. (author)
Detailed investigation of the hydraulics and morphology of the lower part of the Rio Magdalena and the canal del Dique in Colombia. Detailed description of the used methodology of hydrographic and morphological survey techniques. Background of the river morphology of the region. The investigation has the aim to act as a basis for river training...
report 1973
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