Online Trajectory Reshaping for a Launch Vehicle to Minimize the Final Error Caused by Navigation and Guidance

Defence Science Journal

Tessy Thomas¹  L. Varaprasad¹  Iyyanki V. Murali Krishna²  D. R. Jahagirdar³ 

[1] Advanced Systems Laboratory, Hyderabad;Jawaharlal Nehru Technological University, Hyderabad;Research Center Imarat, Hyderabad

关键词: Trajectory reshaping;    launch vehicle;    navigation;    guidance errors;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

Autonomous launch vehicles, once lifted off from the launch pad, equipped with an onboard intelligence which aids in achieving the mission objectives with high accuracy. The accuracy of the mission depends basically on navigation and guidance errors caused at burnout condition, after which the vehicle follows an elliptical path upto impact. The paper describes how to handle the final impact and injection error caused by these navigation and guidance errors. In the current work the initial burnout conditions are tuned and corrected such that the terminal impact point is achieved within the desired tolerance bounds. A two point boundary value problem is solved using the gradient method, for determining the impact errors. The algorithm is validated by simulation studies for various burnout conditions. Defence Science Journal, 2013, 63(3), pp.254-261 ,  DOI:http://dx.doi.org/10.14429/dsj. 63.2414

【 授权许可】

Unknown