Assessing the feasibility of combustion in miniaturised combustors (volume less than 1 cm 3 ) is a key point for the development of micro gas turbines. This paper presents the results obtained in a combustion chamber operating with a hydrogen air mixture. A stable combustion was obtained with an output power between 100 and 1200 W, for air mass §ow rate from 0.1 to 0.5 g/s, and equivalence ratio between 0.3 and 0.7. Experimental results were obtained using thermocouples to measure temperature of the burnt gases at the outlet of the combustor, and information on combustion e©ciency and output power was derived. In addition, laser-based measurements were performed using spontaneous Raman spectroscopy and Rayleigh scattering to determine radial pro¦les of temperature and main species concentrations at the outlet of the combustor.Subsripts a ambient c thermocouple (exhaust gas temperature) ch
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