Trajectory predictions of new lift separation sabots

• 作者: Sreelal Mohanan Rajesh G
• 来源期刊: 防务技术
• 年，卷（期）: 2021,（4）
• 页码范围: 1361-1373
• 页数: 13页
• 语种: 英文
• DOI: 10.3969/j.issn.2214-9147.2021.04.023

摘要

This paper presents a modified analytical model to evaluate the trajectories of various lift separation sabot configurations. The aerodynamic forces acting on the sabot surfaces during a supersonic flight are modeled in the present analytical model by incorporating the pressures on the windward side of the sabot due to the detached/attached shock and its reflections and then integrated using the 3-DoF dynamical equations. The trajectory and the aerodynamic coefficients were obtained for these config-urations at a projectile Mach number of 3. The sabot configurations, which include two new designs, are compared with each other and with the conventional free flight trajectory data of the conventional sabots. The mechanical interaction between the sabot and projectile is also addressed in the present work. The comparison shows that the new designs with the aerodynamic surfaces close to the center of gravity, lift-off from the projectile with minimal mechanical interaction compared to a conventional sabot.