Experimental Study on Spray Characteristics of Liquid Propellant

摘要

The Spray characteristic of liquid propellant is one of the important parameters to determine the engine performance.HAN-Based liquid propellant atomization experiment is conducted by use of particle dynamic analyzer systems (PDA) .The spray characteristics of the cylindrical jet and impinging jet in the atmosphere were observed separately.In the experiment,influence of spray pressure,nozzle diameter and spray model over atomization is systematically analyzed,and the axial and radial distributions of droplets regarding Sauter mean diameter (D32) and droplets' velocity (V) are accurately measured.The results show that:compared with the cylindrical jet,at the middle and lower spray filed,the atomized droplets of the impinging jet have higher uniformity,D32 and the velocity of the droplets are easy to achieve stability.