2. Ignition Performances of Alternative Fuels Under Altitude Conditions According to Their Aromatic Content

The alternative fuels developed recently for environmental or future economical reasons must comply with international specifications designed historically for kerosene blends. Although some of those specifications are not technically proven, they must be respected by the new fuel. This means that presently they must be mixed with Jet A-1 to be used. ONERA has started an in-house program to understand the influence of the fuel composition on the fuel behaviour and thus to widen the possible spectrum of alternative fuels. The present work describes experimental results describing ignition performances of six compositions of fuels, according to aromatics concentration, under altitude conditions, i.e. low air pressure and temperature.