Abstract

This study is a mathematical model to obtain the characteristics performance of magnesium metal (powder) and carbon on potassium nitrate-sucrose (KNSU) solid propellant formulation. Characterization is, as general rule, important determine its before it can be suitable for use rocket flight or any mission. Method ballistic load cell evaluation was used validate results using combustion exhaust ...

This paper presents an approach to constructive modelling of FRep solids defined by real-valued functions using Bspline volumes as primitives. A 4D uniform rational cubic Bspline volume is employed to define a 3D solid. While the first three coordinates are used to represent the spatial component of the volume to be sculpted, the fourth coordinate is used as a scalar, which corresponds to a fun...

The existence of common factors in international bond markets is an important cause for modelling different term structures of interest rates jointly. This paper investigates the common factors of US and UK treasury yields in the period of 1983 to 2012. A principal component analysis motivates the type of joint ATSM for modelling the yield curves of two distinct economies. In sum, two common fa...

This article discusses the mathematical concepts of multivariate parametric solids and their description by B-spline basis functions. Parametric solids can model both the shape and unisotropic interior. Three types of parametric solids, Coons body of types 0, 1, and 2, are used to demonstrate the interior modelling often used as initial or boundary conditions in numerical simulation. Multiple p...