References of "Ngendakumana, Philippe"
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See detailSecond breadboard design
Dardenne, Laurent; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 23 (0 ULg)
See detailFeasibility study of the diluted combustion in a semi-industrial boiler at low temperatures
Seggio, Giovanni; Ngendakumana, Philippe ULg; Pesenti, Barbara et al

Conference (2007, September)

The aim of this work is to assess the technical feasibility and highlight the specific problem of application of diluted (or mild) combustion in a medium scale boiler by direct gas injection. The main ... [more ▼]

The aim of this work is to assess the technical feasibility and highlight the specific problem of application of diluted (or mild) combustion in a medium scale boiler by direct gas injection. The main difficulty is due to the high geometrical confinement and heat losses of a typical boiler combustion chamber, which prevents from getting the minimum level of reactants dilution and temperature needed to reach mild combustion regime. Last year, a preliminary CFD study was performed to select a jet burner and secondary gas injector able to generate sufficient dilution and temperature of the air and gas jets before they meet in the combustion chamber of the boiler. In this work, the optimization of the position and the diameter of the gas injector has been performed. Finally, the boundary conditions and the parameters of the combustion model have been investigated. [less ▲]

Detailed reference viewed: 26 (6 ULg)
See detailPreliminary second breadboard manufacturing files
Dardenne, Laurent; Hendrick, Patrick; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 7 (0 ULg)
See detailBreadboard leakage test bench design and construction
Dardenne, Laurent; Hendrick, Patrick; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 26 (0 ULg)
See detailsecond breadboard design summary, preparation and manufacturing
Dardenne, Laurent; Hendrick, Patrick; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 3 (0 ULg)
See detailMagnetic Fuel Savers
Makaire, Danielle ULg; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 31 (8 ULg)
See detailLeakage tests applied to the breadboards
Dardenne, Laurent; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 13 (2 ULg)
See detailSecond breadboard manufacturing process
Dardenne, Laurent; Ngendakumana, Philippe ULg

Report (2007)

Detailed reference viewed: 170 (0 ULg)
Peer Reviewed
See detailAnalysis of Minimal In-Flight Oxygen Collection Cycle for Two Stage Launchers
Bizzarri, Didier; Heyen, Georges ULg; Hendrick, Patrick et al

in 14th AIAA/AHI International Space Planes and Hypersonic Systems and Technologies Conference (2006, November)

Detailed reference viewed: 28 (2 ULg)
Peer Reviewed
See detailExperimental study of a heat exchanger for an in-flight oxygen collection launcher
Hendrick, Patrick; Bizzarri, Didier; Dardenne, Laurent et al

in 14th AIAA/AHI International Space Planes and Hypersonic Systems and Technologies Conference (2006, November)

In the scope of an ESA-funded theoretical and experimental study (in the GSTP3 program) on heat exchangers intended to provide in-flight oxygen collection capability to a reusable or a semi-reusable TSTO ... [more ▼]

In the scope of an ESA-funded theoretical and experimental study (in the GSTP3 program) on heat exchangers intended to provide in-flight oxygen collection capability to a reusable or a semi-reusable TSTO launcher with an oxygen collection phase in supersonic cruise, two subscale models of an air-hydrogen precooler and a test set-up are currently being developed in Belgium and in Spain. The vehicle we foresee for this application is described in previous conference papers as well as the work on our ESA-funded airborne air separator, which is the other critical element of the oxygen collection plant. This current paper is concentrating only on the theoretical but mainly the technological and experimental aspects of such an air precooler. The experimental and technical aspects include choices and main trade-offs that have had to be made during the design process by the different partners (Techspace Aero, von Karman Institute, Iberespacio, University of Liège, Royal Military Academy of Belgium and University of Brussels). After we fixed the requirements at system level and at the precooler level, a simulation work of generic heat exchangers is presented including the problem of frost formation and its influence on the heat exchanger performance. A few advanced heat exchanger designs are analysed resulting in a more detailed parametric and performance analysis of two advanced configurations. A detailed study of the most advantageous heat exchangers materials is shown resulting in the selection of the alloys for the two breadboards. The manufacturing processes for these two breadboards are defined, based on trials on small scale models inspired from the two technology candidates. Perspectives are also given for the mechanical and thermodynamic testing of the two breadboards. [less ▲]

Detailed reference viewed: 63 (1 ULg)