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.
Analysis of Different Approaches for Gun Ammunition to Hit Aerial Target
The role of fire control system is to orient the gun at proper position to hit the moving target accurately. Aim of this paper is to study the different approaches and to analyze the gun ammunition characteristics to hit the aerial target. The described approaches would help in the selection of killing range. These approaches have been implemented with the experimental data generated for guns. The experimental data has been analyzed for suitability of particular technique under different circumstances. This work contributes in prediction of firing angle that includes ballistic offset and lead angle above the angle of sight to engage a moving target from static tank.
Design of reinforced concrete lining in pressure tunnels, considering thermal effects and jointed rockmass
Abstract Jaeger's theory (Jaeger, Rock Mechanics and Rock Engineering , Cambridge University Press, 1972) of the design of the lining for a pressure tunnel applies to a tunnel located in an isotropic, homogeneous and elastic medium. The theory is derived from the elasticity equations for the plane stress condition. In this paper, Jaeger's theory is extended to a plane strain situation. Also included is a discussion of the effects of a uniform increase (or decrease) in the lining temperature, jointed rockmass, cracking of the tunnel lining, and cracking of the rockmass around the opening. Tables are presented for the modulus of subgrade reaction for various rockmass conditions and for rock sharing pressures for various lining conditions. The reduction factor to include the effect of joints in rockmass is derived by the analysis of a numerical model of the lined tunnel by the finite-infinite-interface element method.