Aerodynamic Characteristics and Control Mechanisms of Spoilers for Multi-body Tail-controlled Projectile
In modern warfare,the demand for long-range precision strikes has increased,and the traditional unguided weapons are no longer sufficient to meet these needs.Guided weapons are receiving increasing attention.The aerodynamic characteristics of spoilers,as control actuators,under different conditions have been insufficiently understood,and their control mechanisms are not yet well-defined.The aerodynamic performance variations of spoilers at different heights,spans and axial positions,as well as their principles are investigated through numerical simulation and trajectory analysis.The causes of variations in additional forces and moments at different Mach numbers are analyzed through the use of shadowgraphs,streamlines,and other diagnostic methods.The study results indicate that the different parameters of spoiler have significant impacts on the additional forces,moments and control drag ratio.Specifically,the additional axial force directly affects the range of projectile,while the additional normal forces and moments have influences on the correction capability of projectile.This research provides important reference for the future design and optimization of spoiler and control system.
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