|Table of Contents|

Computation of Optimal Angle of Fire,Direction Angle and Distribution Moment of Antimissile Shrapnel

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年04期
Page:
475-478
Research Field:
Publishing date:

Info

Title:
Computation of Optimal Angle of Fire,Direction Angle and Distribution Moment of Antimissile Shrapnel
Author(s):
LIANG YiCHEN He-juanLI Yong-xin
School of Mechanical Engineering,NUST,Nanjing 210094,China
Keywords:
shrapnels optimal fire angles optimal direction angles unconstrained optimization
PACS:
TJ413. 3
DOI:
-
Abstract:
The antimissile shrapnel is mainly used in the close-in missile defense system. For the purpose of enveloping the incoming missile by the bullets dispersed by the shrapnel, the ballistic trajectories of the incoming missile and shrapnel are analyzed. After opening the shrapnel’s cabin, the miss distance error of the bullet group’s center is defined as the objective function. The angle of fire and direction angle of the shrapnel are chosen as the design variables. An unconstrained optimization model is built and solved in MATLAB by using the function‘fminsearch’. The moment of opening the shrapnel’s cabin is calculated when the missile-shrapnel distance reaches a certain value. The optimal problem with varied launching time is solved. The result shows that the optimal angle of fire and direction angle can be obtained by an optimization method on the condition that the parameters of shrapnel and the trajectory of the missile are known. When the launching time gets later, the optimal angle of fire and direction angle becomes bigger and smaller respectively.

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Memo

Memo:
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Last Update: 2012-10-23