The Analysis of Compound Control in the Pre-launch Attitude of Internally Carried Air-launched Rocket Based on Simulink

[摘要] With the development of modern war and the aggravation of space confrontation, modern battlefield has put forward a strong demand for the hidden, fast and flexible ability to enter space. All countries attach great importance to improving their space emergency launch capability in wartime. Air-launch rocket is based on aircraft, which can be rapidly deployed to any location in the world to achieve full launch. It is very suitable for rapid response to launch performance requirements. Internally Carried air-launched rocket is in the powerless flight state during the period when the main engine is ignited from the carrier, the position, motion and attitude of the carrier rocket are difficult to predict, and the initial position is located. The error of initial condition caused by orientation has a great influence on the precise guidance and navigation of rocket flight process. Prelaunch attitude control not only plays a significant role in the launching process of internally carried air-launched rocket, but also has an important influence on engine ignition and orbit injection accuracy. On the basis of full understanding of the attitude control methods of air launched rockets at home and abroad, also combined with the specific control requirements of pre-launch attitude control, a new control method using grid rudder and RCS and combined of aerodynamic force and direct force is proposed. The simulation of the compound control scheme is carried out by using Simulink. The control characteristics of the scheme are analyzed, and the feasibility of the scheme is verified.

[发布机构] Space Engineering University, Beijing; 101416, China^1

[效力级别] 无线电电子学 [学科分类] 航空航天科学

[关键词] Aerodynamic forces;Air launch rockets;Compound control;Control characteristics;Control requirements;Guidance and navigation;Initial conditions;Performance requirements