Characteristics Of Steady-state Scan. Sensitive Bomb Without An Umbrella At The End

The terminal-sensitive ammunition without parachute is a kind of new concept terminal-sensitive ammunition that is to reduce the retention time in the air and the impact of wind, and enhance its overall combat effectiveness by the terminal-sensitive ammunition with parachute. This terminal-sensitive ammunition adopt wing panel instead of parachute, and use of the asymmetrical quality of itself and aerodynamic force to achieve the stable scanning.The main task is to build a math model of the terminal-sensitive ammunition with two wing panels, theoretically precise describe and account the formation mechanism of the stable scanning motion of the terminal-sensitive ammunition with two wing panels. The math models of the freely flying stage and the deceleration-rotation-stable scanning stage of the terminal-sensitive ammunition are established after study, and analyses the external force and force moment of the system of the terminal-sensitive ammunition, namely the establishment of two stages 6 degrees freedom movement differential equations of the single rigid body. Subsequently, a computer program is produced, and giving a brief account and analysis. The calculating result shows that the falling speed and the rotation speed of the terminal-sensitive ammunition system designed in this paper have increased than the terminal-sensitive ammunition with parachute, and shows that it can realize stable scanning motion well too. The laws of the vertical wind and vertical wind influencing the scanning characteristics are discussed in the article, which provides the theoretical foundation for the wind's correction when firing. Furthermore, this paper also discusses the laws of the wing panel's installation structural, installation angle and the aerodynamic coefficient etc influencing the scanning angle, scanning frequency, falling speed and scanning interval etc.