| Range extend is an important developing aspects in ammunition technologies. At present, gliding flight is an effective means in all range extended technologies. Researches about aerodynamic characteristics on gliding flight projectile are done in this dissertation.According to the theory of gliding flight extend range and system composing, the design method of aerodynamic configuration and engineering calculation of aerodynamic characteristics are studied. The aerodynamic characteristic model of gliding flight range extend projectile is built by parts combination. The aerodynamic parameters of projectile, empennage and rudder are got by compiled program, basically meet the design requirements, The stability of the whole elastic reserve is greater than 10%, which meets the requirement of stability.Design of projectile diameter 155mm, The 3D model of projectile was established by UG, Gambit software was used to establish the calculation flow field and the grid division and boundary conditions were set up, Using the grid optimization tools in Fluent to optimize the computational grid, In the calculation of the Maher number 0.8～3.0, the angle of attack is 0 degrees and 5 degrees under the calculation condition,The aerodynamic parameters of empennage, projectile body and rudder face, as well as the distribution of ambient pressure, densities and Mach numbers are got by aerodynamic simulation through Ansys-Fluent, which provide messages for optimization of aerodynamic configuration.Based on the results of engineering calculation and aerodynamic simulation, the aerodynamic parameters are analyzed. The optimization of aerodynamic configuration is also done. The control requirements are presented.
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