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Vreeburg, J.P.B. (author)
A short description of experiment lES 330 and its supporting computer program is given. Difficulties with the execution of the experiment, and the most important results are indicated. The use of preliminary results for further validation of the computer program is illustrated. The main effort is presently directed towards the development of a...
report 1984
document
Vreeburg, J.P.B. (author)
Experimental methods for the determination of field distributions in opaque liquids are explained under the headings: Acoustics, Electromagnetics and Radiographic Methods. The status of promising techniques for velocity measurements is reported. The localisation of tracer particles is a basic strategy for most implementations. Instruments for...
report 1989
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van den Dam, R.F. (author), Vreeburg, J.P.B. (author)
The Introduction gives a short review of the effects that onboard liquid may have on the dynamics of the spacecraft. A distinction Is made between arbitrarily moving craft and spin-stabilized vehicles. The modelling of rotating liquid behaviour is very complicated and generally allows only to make predictions on the stability behaviour of a...
report 1989
document
van den Assem, D. (author), Spaan, F. (author), Vreeburg, J. (author), Falk, F. (author), Heide, W. (author), Langbein, D. (author)
This executive summary reports the results of the conceptual study of a mini fluid science laboratory (MFSL). The MFSL is designed to provide effective microgravity on earth and so allows substantiation of the viability of fluid physics experiments in space-based laboratories. Detailed results have been reported in parts I through III of NLR CR...
report 1990
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Vreeburg, J.P.B. (author), Huijser, R.H. (author), Delil, A.A.M. (author)
A somewhat abstract discussion of measurement processes is used to construct a table wherein various techniques for fluid physics diagnosis are collected. The usefulness of each technique for certain types of measurement problems in microgravity fluid physics is assessed. Detailed discussions of applicable techniques are collected in Appendices....
report 1985
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Vreeburg, J.P.B. (author)
Experiments with liquid in microgravity started with tests to solve engineering problems. After the phenomenological experiments in Skylab and other vehicles, Spacelab provided dedicated multi-user facilities for fluid science research. In the space station era much more advanced equipment and operations are expected. This requires novel...
report 1986
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Vreeburg, J.P.B. (author)
De NLR-activiteiten betreffende micro-g vloeistoffysica worden gestructureerd en besproken. De ontwikkeling van dit type werk wordt met een schets van de chronologie geïllustreerd.
report 1982
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Vreeburg, J.P.B. (author)
report 1986
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Vreeburg, J.P.B. (author), Vogels, M.E.S. (author)
Experiment WL-FPM-08, or also: FLIM, has been executed in the FPM on the D-1 mission. The experiment is a continuation of an earlier one on Spacelab-1, and seeks to study capillary liquid flow in transparent models of spacecraft tanks. A typical dimension in a container is five centimeters. Six experiment runs have been conducted with liquid in...
report 1986
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Vreeburg, J.P.B. (author)
report 1991
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Vreeburg, J.P.B. (author)
In this Experiment Definition Document (EDD), the experiment runs have been defined for the Sloshsat FLEVO spacecraft. Except for experiments while Sloshsat FLEVO is still attached to the Shuttle, each experiment requires Sloshsat FLEVO to be controlled for the realization of a particular motion that is expected to result in a desired behaviour...
report 1996
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Vreeburg, J.P.B. (author)
The Slosh Test Orbital Facility (STOF) is a project administered under ESA's TDP programme. Its main hardware article is a small spacecraft, Sloshsat, with an empty weight of 70 kg. An onboard tank with volume of 80 dm³ is about half-filled with water. The spacecraft is designed for the performance of experiments on the dynamics of the compound...
report 1994
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Vreeburg, J.P.B. (author)
The representation of the acceleration field on a rigid body contains as parameters its angular rate and acceleration vectors plus the acceleration vector at a single point of the body. A linear accelerometer measures a local component of the field. From the response of different accelerometers, three quadratic forms in the angular rate of the...
report 1995
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Vreeburg, J.P.B. (author)
report 1984
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Vreeburg, J.P.B. (author)
An overview is given of fluid science investigations in microgee. Emphasis is placed on results obtained by European scientists. In order to assess the merits of experiments, particular aspects of the microgee environment will be discussed. The discipline is still very young, thence many qualitative investigations are necessary to identify...
report 1987
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Vreeburg, J.P.B. (author)
The present plans for space stations are evolutionary developments from Skylab, ASTP, Spacelab, and recently, MIR. Other forbears can be identified as well, and it is instructive to compare current designs with the drawings that appeared in magazines around 1950, when spaceflight first appeared feasible. The space station that is taken as the...
report 1988
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Vreeburg, J.P.B. (author)
The investigation reports in this MP constitute the NLR contribution to the KC-135 campaign report that is compiled by ESA from the contributions of all participants.
report 1988
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Vreeburg, J.P.B. (author)
The proposed experiments are intended to provide basic and engineering information about liquid-solid body interaction, forced liquid motion and free surface behaviour, all in a 0-g environment. Three series of complementary experiments are defined which should yield qualitative information about liquid—solid dynamics phenomena. The first series...
report 1976
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da Riva, I. (author), Martinez, I. (author), Martinez-Val, R. (author), Sanz, A. (author), Huijser, R.H. (author), Visser, F.B. (author), Vreeburg, J.P.B. (author)
The report presents a design study, within a specified envelope of resources, of laboratory for scientific research on fluid material in a space station, A survey of the scientific background of mlcrogravity experiments identifies candidate investigations. A structured description of available facilities, or earlier design studies, provides a...
report 1987
document
Vreeburg, J.P.B. (author)
The major attractiveness of space processing of materials derives from the option to establish transport phenomena in a large quantity of liquid that IS either weightless or acted on solely by a (non-potential) rotational acceleration field. Thus it becomes possible to exploit various material currents that on earth are disrupted completely by...
report 1977
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