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The transition trajectory guidance technology for a conceptual space-based missile is studied in this paper. Firstly the conception of using a missile striking from space is described. For the extraatmospheric flight phase, the time-fixed orbital transfer theory is utilized to determine braking position and braking velocity. And then a finite thrust guidance approach with gravity anomaly compensation...
With the development of society, the structural steelwork tends to be larger in scale and more complicated in system. The increasing difficulties in construction ask for higher efficiency and security. Traditional 2D drawings can hardly satisfy the requirement of structural instructions, for example, the construction of boiler steel frame. This article focuses on the imperfections of 2D drawings in...
In some mechanical transmission structures, the conjugate cam mechanism is used widely. The previous design method is not only tedious, but the substantial design is not strong, difficult to form a simulation animation, and inconvenient for subsequent analysis. The equations of conjugate cams curves are derived by the analytical method. Taking the conjugate cam in beating-up mechanism as an example,...
A 3-dimensional robust guidance law is developed for impact angle control in this paper, using the linear quadratic optimal theory and the variable structure control methodology. In order to study the problem of the precision guidance, the motion of missile is decomposed in the diving plane and the turning plane. After the optimal guidance law is designed with terminal multi-constraint conditions...
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