Gyroscopic Stability and Drag Characteristics Study of Canard-Installed Course Correction Munition

Bae, Ju Hyun

doi:2017.20.3.376

J. KIMS Technol > Volume 20(3); 2017 > Article

Journal of the Korea Institute of Military Science and Technology 2017;20(3):376-383.
DOI: https://doi.org/10.9766/KIMST.2017.20.3.376

Gyroscopic Stability and Drag Characteristics Study of Canard-Installed Course Correction Munition

Ju Hyun Bae

The 4th Research and Development Institute, Agency for Defense Development

조종날개가 장착된 탄도수정탄의 자이로안정성 및 항력 특성 연구

배주현

국방과학연구소 제4기술연구본부

Abstract

This paper describes the gyroscopic stability and the drag characteristics of the smart munition with a course correction fuze(CCF). A ballistic analysis was conducted to figure out the effect of the canards on the gyroscopic stability of the projectile. The analysis used the commercial ammunition performance evaluation software: Projectile Design and Analysis System(PRODAS). In particular, we compared the PRODAS analysis results to real field test results to investigate the influence of the CCF mounted projectile. In addition, some ballistic simulations were carried out to provide the conditions suitable for wind tunnel tests. Experimental results show that the added drag force by the canards is almost uniform regardless of the Mach number when the projectile is at the normal position where the angle of rotation and the angle of attack are both 0 degrees. However, as the angle of attack of the projectile increases, the additional drag force depends on the deflection of the canards.

Key Words: Course Correction Fuze, Canard, Spin-Stabilized Projectiles