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International Journal of Aerospace Engineering
Volume 2015, Article ID 618458, 14 pages
http://dx.doi.org/10.1155/2015/618458
Research Article

Optimization of Trajectory Correction Scheme for Guided Mortar Projectiles

Electronic Engineering Department, Shijiazhuang Mechanical Engineering College, No. 97 Heping West Road, Shijiazhuang, Hebei 050003, China

Received 16 September 2015; Revised 29 October 2015; Accepted 1 November 2015

Academic Editor: Mahmut Reyhanoglu

Copyright © 2015 Yongwei Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Guidance with traditional trajectory correction scheme usually starts from the trajectory apex time to reduce drag penalties early in flight; however, this method cannot get the max trajectory correction capability of canards according to our analysis. This paper presents an optimized trajectory correction scheme by taking different control phases of canards in ballistic ascending segment and ballistic descending segment. Simulation indicates that the optimized trajectory correction can improve the trajectory correction capability greatly. The result of an example trajectory and Monte Carlo simulations with the predictive guidance law and the trajectory tracking guidance law testifies the effectiveness of the optimized trajectory correction scheme.