Next generation aircraft & spacecraft by fracture mechanics analysis & relativistic elasticity
Keywords:
Relativistic Elasticity, Universal Equation of Elasticity, Fracture Mechanics Analysis, Relative Stress Tensor, Absolute Stress Tensor, Universal Stress Intensity Factors.Abstract
The innovative and groundbreaking theory of "Relativistic Elasticity" is proposed for the design of the new generation large aircraft with turbojet engines and speeds in the range of 50,000 km/h and for the new generation spacecraft of any speed. Such a new theory shows that there is a considerable difference between the absolute stress tensor and the stress tensor of the airframe even in the range of speeds of 50,000 km/h. For much bigger speeds of the next generation spacecraft, like c/3, c/2, 3c/4, or 0.80c (c=speed of light), the difference between the two stress tensors is very much increased The new theory of "Relativistic Elasticity" is a combination of the theories of "Classical Elasticity" and "Special Relativity" and results in the "Universal Equation of Elasticity" and in the "Universal Stress Intensity Factors". The "structural design" of super speed vehicles requires the consideration of mass pulsation and energy-mass interaction at high velocity space-time scale, as the relative stress intensity factors are different than the corresponding absolute stress intensity factors.
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