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An Effective Pivot Trace Algorithm for Movable Nozzle using Neural Network  

Kim Joung-Keun (국방과학연구소 기-4-1)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.9, no.4, 2005 , pp. 73-80 More about this Journal
Abstract
In general, the performance of movable nozzle used for thrust vector control in solid rocket motor is estimated on the basis of the effective pivot of nozzle. However, it is nearly impossible to define the exact effective pivot by the mathematical model or experimental technique owing to pivot dynamics. In this paper, pivot dynamic properties were investigated by ADAMS simulation technique and trajectory of the exact effective pivot was modelled by the artificial neural network. Comparison of the proposed method was made with the virtual movable nozzle (computer simulation) to verify the method, and showed good agreement. Therefore, the proposed method will be applicable to predict the effective pivot of movable nozzle during bench or ground test.
Keywords
Artificial neural network; Thrust vector control; ADAMS; Movable nozzle; Effective pivot;
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