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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SOLUTIONS FOR A BALLISTIC TRAJECTORY WITH DRAG REDUCTION PROVIDED BY A BASE BLEED UNIT
Submission Author:
Wallace Ramos Rosendo da Silva , RJ
Co-Authors:
Wallace Ramos Rosendo da Silva, Norberto Mangiavacchi, José da Rocha Miranda Pontes, Daniel Chalhub, GIL ROBERTO VIEIRA. PINHEIRO, Rachel Manhães de Lucena, Leib Neubarth, Maurício Ferrapontoff Lemos, LAURILIO SILVA JUNIOR
Presenter: Wallace Ramos Rosendo da Silva
doi://10.26678/ABCM.ENCIT2020.CIT20-0600
Abstract
The purpose of this study is to propose a simplified method of modified-point mass trajectory for base burn projectiles due to reduction of computational time. The research has showed that some forces can be neglected, which demands less inputs and it optimizes comparisons with projectiles firing tables. A Base Bleed unit reduces base drag, hence the ballistic trajectory is better when is compared to an inert projectile, even though it does not have any propulsion system. Therefore, this project offers two-fitted curves for drag and establishes connection with internal ballistics to understand how mass flow rate of burnt gases could influence in this project.
Keywords
external ballistics, base bleed, extended range, drag reduction, firing tables
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