English

RELATIVISTIC ROCKET MECHANICS

IN THIS WORK THE MECHANICS OF THE SPECIAL THEORY OF RELATIVITY ARE EXTENDED TO SYSTEMS HAVING A REST MASS CHANGING IN TIME (ROCKETS). THE PRINCIPLES OF MOMENTUM AND ENERGY ARE INVESTIGATED AS WELL AS THE LAW OF THE DECREASE OF MASS OF AN ARBITRARILY ACCELERATED ROCKET IN FREE SPACE WITHOUT EXTERNAL FORCES, AND IN FACT IN THE SYSTEM OF THE STATIONARY OBSERVER ON EARTH AND IN THE SYSTEM OF THE ASTRONAUT MOVING WITH THE ROCKET. THEN TWO SPECIAL CASES ARE TREATED: NAMELY, THE MOTION OF A ROCKET WITH CONSTANT SELF-ACCELERATION AND THE MOTION OF A ROCKET WITH CONSTANT THRUST.

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