A Study on the Design of Rifling Angle by Setting up an Idealized Rifling Force Curve

Cha, Kiup; Ahn, Sangtae; Cho, Changki; Choi, Euijung

doi:2015.18.1.15

J. KIMS Technol > Volume 18(1); 2015 > Article

Journal of the Korea Institute of Military Science and Technology 2015;18(1):15-21.
DOI: https://doi.org/10.9766/KIMST.2015.18.1.015

A Study on the Design of Rifling Angle by Setting up an Idealized Rifling Force Curve

Kiup Cha, Sangtae Ahn, Changki Cho, Euijung Choi

The 5th Research and Development Institute, Agency for Defense Development

이상적인 강선력 곡선에 의한 강선각 설계기법

차기업, 안상태, 조창기, 최의중

국방과학연구소 제5기술연구본부

Abstract

Rifling Force can be described with projectile velocity, gas pressure and rifling angle, etc. Under the same conditions, the character of the rifling angle decisively influences the rifling force. To reduce the harmful effect, locally distinct maximum of rifling force has to be avoided. The optimal design methodology of rifling angle curve had been developed by combined Fourier series and polynomial function. When it was tried newly to design the rifling angle curve, this design trial caused not to produce the lower rifling force than the existing design. Normally, the curve of the rifling angle is designed first, then the rifling force is set according to the rifling angle curve. However during the cause analysis, new design methodology was established to design the ideal rifling force curve before the rifling angle design. With this new methodology, the above optimal design method was analyzed and its limitation was confirmed.

Key Words: Optimal Design, Rifling, Rifling Force, Rifling Rate, Rifling Angle