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Study of Two-dimension Trajectory Correction Projectile Aerodynamic Characteristic

Author: XuAnYong
Tutor: ChenShaoSong
School: Nanjing University of Technology and Engineering
Course: Armament Launch Theory and Technology
Keywords: Two - dimensional trajectory correction projectiles Resistance ring Canard Numerical Simulation Flight stability
CLC: TJ760
Type: Master's thesis
Year: 2010
Downloads: 239
Quote: 2
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Abstract


Modern warfare is increasingly high accuracy and cost requirements of the weapon system , the trajectory correction projectiles is the product of this background , it is a trajectory correction module through the installation of the original ammunition , the projectile in the air can be controlled to improve projectile hit rate of new ammunition . At present , China 's one-dimensional Trajectory Correction technology has matured , the current mainstream Trajectory Correction ; dimensional trajectory correction projectiles have been put on the agenda , and its application prospects , future development trends . In this paper, two-dimensional trajectory correction resistance ring and Canard bomb as the research object , correction status from the projectile to start , through numerical simulation , a detailed analysis of the additional resistance ring and Canard projectile drag coefficient , lift coefficient , pitching moment the coefficient coefficient and pressure heart . The analysis results show that the effect of increasing resistance ring resistance , and less impact projectiles lift , the projectile pressure heart after shift to some extent favor projectile stable flight ; the Canard additional resistance on the projectile impact , so that the projectile the lift significantly increased presser heart forward, is not conducive to the stability of the flight of the projectile . Each Mach number projectile gyroscopic stability factor correction state and dynamic stability factor is calculated based on the above , draw projectile revision status have a good flight stability . These are two-dimensional Trajectory Correction aerodynamic layout is designed to provide a reference .

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