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Delil, A.A.M. (author)The work described was done during a five months stay as visiting professor at the Institute of Space and Astronautical Science, in Sagamihara, Japan. The research concentrates on pulsating and oscillating heat transfer devices, being of interest for applications in spacecraft thermal control in microgravity, in planetary partial gravity and...report 2001
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Delil, A.A.M. (author), Heemskerk, J.F. (author)Heat balance research with a thin-balled cube was initiated to verify heat balance computer programmes of the nodal network type. The heat balance experiments were carried out in a simulated space environment (inside the NLR thermal—vacuum chamber with liquid nitrogen cooled shroud, using a carbon arc solar simulator). The experimentally...report 1978
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Delil, A.A.M. (author)Beschreven wordt de wijze van aanpak om de samenstelling van een MHD rookgas als functie van temperatuur en druk te bepalen. Kennis van deze samenstelling is onder meer noodzakelijk om de plaatsafhankelijke thermo-optische eigenschappen van het rookgas en de stralingsoverdracht in het generatorkanaal te kunnen berekenen. Tevens worden de...report 1983
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Heemskerk, J.F. (author), Delil, A.A.M. (author), Daniels, D.H.W. (author)The thermal conductivity of a honeycomb sandwich panel was mesisured in the three characteristic directions. The measurements were carried out in the NLR space simulation chamber. The results are in good agreement with values calculated for a simplified model.report 1971
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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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Delil, A.A.M. (author)Future (commercial) satellites will require accurate propellant gauging systems, in order to meet the end-of-life reorbiting requirement and the need for replacement planning. A capacitivc Gauging Sensor Unit is currently being developed for the Meteosat Second Generation spacecraft. Its measurement principle is based on the difference of the...report 1997
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Delil, A.A.M. (author)Two-phase flow heat transport systems (thermal busses) for the Columbus Space Platform and the Space Station are expected to incorporate systems to control the liquid flow rates into the evaporative cold plates. Such a control system consists of a sensor that monitors the cold plate (performance), a control algorithm and an actuator i.e. a valve...report 1986
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Delil, A.A.M. (author)A uniaxial model for the transient performance of gas-loaded variable conductance heat pipes is being developed, partly under contract with the Netherlands Agency for Aerospace Programs NIVR. The model has to be easily implementable in existing spacecraft thermal analyzer computer programs. So far, a steady-state version of the model is...report 1984
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Delil, A.A.M. (author)The rationale behind the CIMEX-3 experiment is explained. It is justified (supported by many references) why such an experiment shall be carried out, by discussing its historical background, its objectives and its preliminary configuration. It is shown that CIMEX-3 is not intended only as an experiment to get a better knowledge of the physics of...report 2000
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Delil, A.A.M. (author), Heemskerk, J.F. (author)The monitoring of the quality of the two-phase mixture at various locations in the system is a valuable, possibly indispensable, part of the control system needed to properly operate a two-phase heat transport system for large spacecraft. Based on a trade-off of various quality monitoring concepts, NLR started to develop a dedicated quality...report 1988
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van der Vooren, J. (author), Delil, A.A.M. (author), Sanderse, A. (author)A new uniaxial model for a gas loaded variable conductance heat pipe (VCHP) is developed. This model takes into account the diffusion at the vapour-gas interface as well as the inertial effects of the moving vapour. Only steady-state conditions are considered. The generally accepted Edwards /Marcus model will be shown to be a first order...report 1980
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Delil, A.A.M. (author), Heemskerk, J.F. (author), Mastenbroek, O. (author), Pauw, A. (author), van Put, P.A.G. (author), Voeten, R.G.H.M. (author), Jacobs, R.H.M. (author), Muller, R. (author), Ebeling, W.D. (author), Beckmann, M.M. (author)Capillary pumped two-phase systems are considered to be: -Prime candidates to provide efficient thermal management systems for future advanced spacecraft. -Promising candidates for the thermal control of advanced larger instruments (e.g. laser-based earth observation instruments) or microgravity experiments. In such capillary pumped two-phase...report 1996
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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
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Delil, A.A.M. (author), Heemskerk, J.F. (author), Mastenbroek, O. (author), Supper, W. (author)This paper describes all analytical and experimental activities (of NLR, prime contractor, and the subcontractors Bradford Engineering and Daimler Benz Aerospace-Space Infrastructure) to develop a high efficiency low pressure drop condenser and to bring it up to pre-qualifïcation level: - The inventory, dedicated to a literature review of...report 1996
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Delil, A.A.M. (author)Two-phase heat transport systems are currently considered for the thermal management of future large power spacecraft. The monitoring of the quality, being the relative vapour mass content, of the two-phase mixture at various locations in the system, is valuable - possibly indispensable - for the proper operation of such a system. This paper...report 1986
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Uniaxial model for gas-loaded variable conductance heat pipe performance in the inertial flow regimevan der Vooren, J. (author), Delil, A.A.M. (author)A uniaxial model for the thermal performance of a variable conductance heat pipe (VCHP) has been developed at NLR. The model, so far, accounts for diffusion at the vapour/gas interface as well as for inertia! effects of the moving vapour, Calculations performed have shown that the diffusion effects are of minor importance in comparison with the...report 1981
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Delil, A.A.M. (author)Electro-osmosis has been stoggested in literature as an additional pumping mechanism in heat pipes. The performance of a feedback controllable electroosmotic heat pipe (PCHP), analyzed in an earlier phase of this study, was reported, including corollary application areas (NLR TR 78I42 L), Unfortunately the heat transport capability of such an...report 1979
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Delil, A.A.M. (author)The scope of this report is: - to give a short description of the possible operation principles and applications of heat pipes - to derive the governing equations for a model of a conventional heat pipe (including the limits to the heat transfer capability) - to describe the theoretical derivation of the formulae for the various thermal...report 1976
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Delil, A.A.M. (author)Different concepts for a moveable thermal joint are described and discussed with respect to the applicability in a dedicated deployable or steerable heat pipe radiator system to handle the waste heat of the NiH batteries of the Polar Platform. Concepts which are identified as possible candidates for near-term deployable radiator development are:...report 1986
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Delil, A.A.M. (author)Multiphase flow, the simultaneous flow of the different phases (states of matter) gas, liquid and solid, strongly depends on the level and direction of gravitation, since these influence the spatial distribution of the phases, having different densities. Many investigations concern behaviour of liquid-solid flows (e.g. in mixing, crystal growing...report 2000