Abstract
An experimental investigation was performed to study combustion characteristics of ADN based liquid propellant droplet with resistive ignition method. The experiment was conducted in Ar atmosphere and different oxidizing gas atmospheres under an on-load voltage range of 190–230 V; the oxidizing gases included N2O, NO and O2. The influence of the atmosphere, on-load voltage, droplet volume on the ignition energy, ignition delay time, burning duration, and droplet equivalent diameter development during ignition and combustion was studied. ADN based liquid propellant showed feasibility to combustion by the resistive ignition method in the inert gas atmosphere. The ignition energy accounted for more than 80 % of the total energy during the ignition and combustion process. With the increase of the droplet volume, the value of the ignition delay time and burning duration increased. The atmosphere had a significant influence on the burning duration and droplet diameter, but had little influence on the ignition delay time. Under our experiment conditions, the N2O and O2 atmospheres improved the combustion process, while, the NO atmosphere inhibited the oxidation of methanol.
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