Backward Laser Radar Scattering Characteristic of Solid Rocket Plume

The flow and laser scattering Characteristic of Al
₂
O
₃
particles in solid rocket plume are studied. The chemical reaction process is simulated by finite rate model, the two-phase flow process is simulated by stochastic orbital model, and the scattering characteristic parameters of solid particles are obtained by MIE scattering theory and solved by finite volume method. The number density of Al
₂
O
₃
particles and the cross-section area of the lidar scattering of the plume at three different flight velocities are calculated. The results show that the plume of solid particles has strong echo to the 1.06 μm laser, which increases first and then decreases with the increase of incident angle, and the cross-section area of the laser radar gradually decreases with the increase of flight speed.