  Basing on a new approach to the fundamental conception of the momentum of a
variable-mass point, the paper deals with the hyperreactive model of motion.
The equations of motion are different in this model from the known
Meshchersky-Tsiolkovsky equations, which cannot be taken as a principle in the
final analysis by reason of their conflicting behaviour. The suggested
conception of hyperreactive motion allows to determine in what way the
parameters of motion are dependent on the type of mass change, and thus to
solve a basic problem how high absolute velocities may be reached in space.
