Design & development of a simulation system for ballistic missile
The computation of the positioning and launching parameters wrt time, for missile system is done by the interface unit called Intercept missile unit (IMU) controlled by computer. When the trajectory is simulated using six degree of freedom to estimate the velocity and location at any instant, this simulation helps in estimation of position coordinates (x, y, z) & angular rotations φ, θ, ø w.r.t time. Aim of this paper is to calculate accurate parameters in computation of trajectory estimation. This proposed algorithm is applicable for Pre-selected range technique. The computed parameters help in deciding kinetic energy to missile for correct hit to target. The proposed simulation were implemented with the experimented data generated for missile having approximate 5 ft diameter with initial power 900ft/s. Apart of this a comparative analysis of proposed simulation with already existing simulations is shown in Table I. Actual developed GUI is shown Fig. 3, which give a clear idea about the merit of this approach. So, this investigation helps to determine the trajectory arcs for missile to hit target accurately.
Approximate Closed-Form Solution for projectile Trajectory and its Applications to lead Angle Computations
In this paper, an approximate closed-form solution for trajectories of ballistic projectiles is derived. The assumption made in this derivation is to neglect the variation of the elevation angle along the trajectory in a small interval of time. The closed-form solution has been used to develop the 3-logarithm for a lead angle computation as well as faster computation of trajectories. The fact that one of the analytical expressions although complex, is invertible and is made use of in the algorithm.
A LITERATURE REIEW OF TARGET COSTING IN SSCI AND SCI&SCI-EXPANDED INDEXES
Target costing as a cost management and profit planning system is used by many competitive firms since 1970s. Although the concept is simple, the implementation needs an extensive collaboration inside and outside of the organization. In contrast, many organization managers think that target costing is just related with accounting and finance staff. Our study aims to review the literature of this important concept; target costing by examining 41 English articles published in SSCI and SCI&SCI-Expanded between 1985-2008. The study aims to briefly explain the content of each article to show the reader what has accomplished so far.